Wide Angle Led where can i find a photodiode like this?
I need a photodiode that filters out visible light (but passes IR), I need it to be one that has the shape of an LED and have a wide angle of at least 90 degrees. There are a ton and I just dont know where to look. As far as size goes it should be about the size and shape of a 5mm LED.
Thanks
If DigiKey doesn't have it, it probably does not exist. They have an extensive search form that will allow you to specify most any parameter.
70 Green lights leds 1/4 inch round 5mm concave lens. Led wire color: green. 3 Year warranty. Connect 44 led christmas lights end to end. Indoor/outdoor led christmas lights. Energy saving energy star full wave led. Wide angle green led christmas lights are injected molded sealed units. Male female connection. Virtually unbreakable green lights uv protected. Ul listed 4.8 watts per set. Directional lens green lights concave nonfaceted adds depth to led christmas lights projects wide angle led green lights. Forever led christmas lights mini lights wide angle c7 c6 c9 icicle net lights and tree trunk wraps. Use for christmas tree lights roof lines outdoor christmas lights windows fences christmas wreaths and garland led christmas lights displays branch wrapping tree trunks and much more. Color: Green. Wide angle length: 23.8 .
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70 Soft white leds 1/4 inch round 5mm concave lens. Led wire color: green. 3 Year warranty. Connect 44 concave soft white sets end to end. Indoor/outdoor christmas tree lights. Energy saving energy star full wave led. Male/female endtoend. Wide angle soft white led christmas lights are injected molded sealed units. Virtually unbreakable uv protected. Ul listed 4.8 watts per set. Soft white directional concave lens adds depth to led projects wide angle soft white led. Forever led christmas lights mini lights wide angle c7 c6 c9 icicle net lights and tree trunk wraps. Use for christmas tree lights roof lines outdoor christmas lights windows fences christmas wreaths and garland led christmas lights displays branch wrapping tree trunks and much more. Color: Soft White. Wide angle length: 23.8 .
25ct Warm White Twinkling LED Wide Angle Christmas Light Set 4 Light CurtainSet of 25 Commercial Grade LED Wide Angle Christmas Lights Item #25LTLC35-WW/W Product applications:This string of lights is perfect for light bars, it mak
70 White leds 1/4 inch round 5mm concave lens. Led wire color: green. 3 Year warranty. Connect 44 white christmas lights sets end to end. Indoor/outdoor christmas tree lights. Energy saving energy star full wave led. Male/female endtoend. Wide angle white led christmas lights are injected molded sealed units. Virtually unbreakable uv protected. Ul listed 4.8 watts per set. Directional lensuse for white christmas tree lights white wreath lights wide angle white christmas lights. Forever led christmas lights mini lights wide angle c7 c6 c9 icicle net lights and tree trunk wraps. Use for christmas tree lights roof lines outdoor christmas lights windows fences christmas wreaths and garland led christmas lights displays branch wrapping tree trunks and much more. Color: White. Christmas tree lights length: 23.8 .
100ct Warm White LED Wide Angle Christmas Light Set For Light Curtain White WireSet of 100 Commercial Grade LED Wide Angle Christmas Lights Item #100LLC6-WW/W Product applications:This string of lights is perfect for light bars, it
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35ct Warm White LED Wide Angle Christmas Light Set 4 Light Curtain - White WireSet of 35 Commercial Grade LED Wide Angle Christmas Lights Item #35LLC6-WW/WProduct applications:This string of lights is perfect for light bars, it make
35ct Warm White LED Wide Angle Christmas Light Set 4 Light Curtain - White WireSet of 35 Commercial Grade LED Wide Angle Christmas Lights Item #35LLC4-WW/WProduct applications:This string of lights is perfect for light bars, it make
Set of 100 LED Wide Angle Christmas LightsItem #X4W0017 Features: Color: amber bulbs / white wireNumber of bulbs on string: 100Bulb size: concave wide angleSpacing between each bulb: 4 inches Lighted length: 33.3 feet Total length: 34 feetAdditional Product Features: LED lights use 90% less energy Lights are equipped with Lamp Lock feature, which makes them replaceable, interchangeable and keeps them from falling out Super bright bulbsBulbs last up to 100,000 hoursIf one bulb burns out, the rest will stay lit Durable non-glass replaceable bulbsCool to the touchEnd-to-end connectors allow you to connect multiple sets together (not to exceed 210 watts)Commercial grade lightsWire gauge: 22Comes with replacement bulbs and fuseUL listed for indoor/outdoor use 120 volts, 60Hz, 0.08 amps, 9.6 watts Type: Lights Color: Yellow
Set of 50 LED Wide Angle Christmas LightsItem #X6W0510Features: Color: pink bulbs / white wireNumber of bulbs on string: 50Bulb size: concave wide angleSpacing between each bulb: 6 inches Lighted length: 25 feet Additional Product Features: Commercial grade lightsLED lights use 90% less energy Lights are equipped with Lamp Lock feature, which makes them replaceable, interchangeable and keeps them from falling out Super bright bulbs guaranteed to lightBulbs last up to 100,000 hoursIf one bulb burns out, the rest will stay lit Durable non-glass replaceable bulbsCool to the touchEnd-to-end connectors allow you to connect multiple sets together (not to exceed 210 watts)Wire gauge: 22Comes with replacement bulbs and fuseUL listed for indoor/outdoor use 120 volts, 60 hertz, 0.04 amps, 4.8 watts Type: Lights Color: Pink
Set of 50 LED Wide Angle Christmas LightsItem #X6G0504Features: Color: green bulbs / green wireNumber of bulbs on string: 50Bulb size: concave wide angleSpacing between each bulb: 6 inches Lighted length: 25 feet Additional Product Features: LED lights use 90% less energy Lights are equipped with Lamp Lock feature, which makes them replaceable, interchangeable and keeps them from falling out Super bright bulbsBulbs last up to 100,000 hoursIf one bulb burns out, the rest will stay lit Durable non-glass replaceable bulbsCool to the touchEnd-to-end connectors allow you to connect multiple sets together (not to exceed 210 watts)Commercial grade lightsWire gauge: 22Comes with replacement bulbs and fuseUL listed for indoor/outdoor use 120 volts, 60Hz, 0.4 amps, 5 watts Type: Lights Color: Green
Set of 100 LED Wide Angle Christmas LightsItem #X4W0018Features: Color: orange bulbs / white wireNumber of bulbs on string: 100Bulb size: concave wide angleSpacing between each bulb: 4 inches Lighted length: 33.3 feet Total length: 34 feetAdditional Product Features: LED lights use 90% less energy Lights are equipped with Lamp Lock feature, which makes them replaceable, interchangeable and keeps them from falling out Super bright bulbsBulbs last up to 100,000 hoursIf one bulb burns out, the rest will stay lit Durable non-glass replaceable bulbsCool to the touchEnd-to-end connectors allow you to connect multiple sets together (not to exceed 210 watts)Commercial grade lightsWire gauge: 22Comes with replacement bulbs and fuseUL listed for indoor/outdoor use 120 volts, 60Hz, 0.08 amps, 9.6 watts Type: Lights Color: Orange
LEDs have been widely used to mark particular areas
The present invention relates generally to lighting assemblies that employ light emitting diodes (LEDs), and more particularly to LED tube light housings.
LEDs have been widely used to mark particular areas, illuminate dark areas, illuminate equipment, enhance the appearances of vehicles, etc. An LED is a semiconductor diode made of gallium arsenide, gallium phosphide, gallium nitride, silicon carbide, or the like, according to the color, the luminance and the intensity. LEDs convert electric energy efficiently into spontaneous and non-coherent electromagnetic radiation at visible and near-infrared wavelengths by electro-luminescence at a forward-biased pn junction. Upon being biased at the avalanche breakdown region, the pn junction forces an LED to emit visible light rays.
LEDs are very rugged and durable, exhibiting extremely long life because they emit light without heat, with no consumable filaments or gasses, having no voids, and perform with little regard for environmental conditions. In addition, LEDs are physically small, do not require high voltages to operate and consume minimal power compared with other active light sources. However, LEDs have several drawback characteristics that must be considered in their use. LED light output is highly directional, e.g., their viewing angle is narrow. Typical viewing angles are on the order of an included angle of only 20 degrees up to rare angles of 45 degrees. Viewed `head-on`, within their viewing angle, LEDs can appear very bright. But viewed outside of their viewing angle, LEDs quickly dim and disappear. Although not a problem with cosmetic or indicator applications, this characteristic severely limits LED use in practical or functional lighting. Until recently, LEDs were not a bright light source. This has changed, bringing LEDs into the arena of functional lighting applications, but the viewing angle restrictions of LEDs have remained.
The present invention are LED tube light housings configured to control and orient the lateral position of inserted LEDs on a wiring harness. An LED tube light housing according to the invention includes a first end, a second end, an inner surface, and an outer surface. The housing may be manufactured from rigid or flexible material. First and second sections are generally formed inside the housing.
The first section is configured in the form of a cavity for providing a vertical orientation of one or more LEDs. At least the top of the first section, e.g., the cavity, is transparent, translucent, or the like, to permit light emitted from LEDs contained therein to pass therethrough. The remaining portion of the housing may be transparent, translucent, opaque, or a combination thereof. The second section is configured to contain therein electrical components of the wiring harness. The wiring harness may include LEDs, fuses, resistors, wiring, and wiring splices. No printed circuit board portions are included in the wiring harness. The housing may also include a socket covering for one end, and may include a plug covering for the other end to enable multiple housings to be interconnected. The housing may also include a molded end cap.
One example of an LED tube housing is generally configured so a cross-section of the first section is generally U-shaped and is inverted, and cooperates with the second section that has a cross-section that is generally rectangularly shaped. The first section is configured to slidingly receive one or more LEDs.
Another example of an LED tube housing is generally rectangularly shaped. This housing is configured so a cross-section of the first section is generally rectangularly shaped, and cooperates with the second section that has a cross-section that is generally rectangularly shaped. The first section is configured in the form of two vertical walls that are spaced from each other by a distance that permits slidingly receiving one or more LEDs.
Another example of an LED tube housing is generally rectangularly shaped. This housing is configured so a cross-section of the first section is generally rectangularly shaped, and cooperates with the second section that has a cross-section that is generally rectangularly shaped. The first section is configured in the form of two vertical walls that are spaced from each other by a distance that permits slidingly receiving one or more LEDs. This housing also includes laterally extending portions from the top of the first section. These laterally extending portions may be configured in the form of hooks to permit the housing to be snapped onto a supporting member.
About the Author
Sunye company, as a famous and professional lamp producer and exporter, we have many catergories Energy saving led downlight,led flexible strip,led bulbs,led tube and other components.
Led Strip Controller how to fix the two led controller?
I have 2 LED strips, controllers and remote control on the same house. The problem : all the command send by the remotes are received by both LED strip controller and therefore, I can't control LED strip controller separately. If I change color, speed, turno off,... it's reflected on both LED strip...which is what I don't want. Any way to fix this, such as selecting channels (on the remote and controller) ? Thanks
You need to change one of the remotes.Judge from your status, you need 1 remote to 1 controller.
Generally when the controller and remotes come out of factory, the factory make them as one remote to all controllers. Say, all the remotes have the same code, can remote all controllers.
If one is going to use two or more sets of strips, and controllers&remote in a small space, which requires 1 remote to 1 controller format, it's better to tell the factory in advance. They can make it.
So if guys buy strips from www.ledlightsworld.com fall into this condition, just tell us that you need 1 remote to 1 controller format, we can make it for you.
The LED Light Strip Dimmer Controller makes your LED lighting strips that much more convenient. Easy to install, this dimmer switch allows you to adjust your LED lighting strips to just the right brightness. Designed to be mounted, this makes your LED lights easy to use. This item ships directly from the manufacturer. Product usually arrives in 4-10 business days, depending on destination, including order processing and shipping. APO/FPO shipping unavailable
The LED Light Strip Pulse Controller adds a fun pulsing touch to your LED lighting strips. This light controller allows you to choose how quickly the lights pulse, as well as turn them on and off. Use this LED light controller under railings or under stairs these LED tubes help light the way at night. This item ships directly from the manufacturer. Product usually arrives in 4-10 business days, depending on destination, including order processing and shipping. APO/FPO shipping unavailable
It’s a 4-channel dimmer/relay pack providing DMX control for on/off or dimming to units not equipped with DMX on their own. The fixture is optimized for use with small LED fixtures to prevent ghosting and flickering. Each of the 4 sets of outlets (duplex) can be set to any DMX address and independently set as a dimmer or relay. Sixteen user-selectable chase patterns make programming a breeze. 4-channel dimmer/switch pack optimized for use with small LED fixtures Each channel can be set to any DMX address which makes it extremely easy to program Each channel can be individually set as a dimmer or a switch which offers great flexibility 4 duplex outlets allow up to 8 devices to be controlled simultaneously Separate LED indicators clearly show the status of each channel Easy-access to built-in automated programs generate a synchronized show Automated programs have adjustable speeds and dimmer levels which offer great control without DMX DMX channels: 1, 2 or 4 Power output: 5A per channel, 15A max Input volta Type: DJ and Lighting Parts: 2 Year Labor: 2 Year
Tigress Multicolor Led 20" Light Strip Kit, Complete With Controller . Modular 20" LED light strips can be controlled for color, brightness, even the speed of the chase pattern through the lights from up to 120 feet away. Remote gives you full control of selection of white, red, blue, green, yellow, light blue, orange and varying shades of each color. Up to ten strips can be wired in series and controlled using a single controller. Operate on 12 or 24V systems.
Tigress Multicolor Led 20" Light Strip Kit, Without Controller . Modular 20" LED light strips can be controlled for color, brightness, even the speed of the chase pattern through the lights from up to 120 feet away. Remote gives you full control of selection of white, red, blue, green, yellow, light blue, orange and varying shades of each color. Up to ten strips can be wired in series and controlled using a single controller. Operate on 12 or 24V systems.
in need of a controller for in car lights (streetglow inside)?
i need a controller for the lights in my jeep grand cherokee i got some streetglow led strip lights for under the the driver and passanger side. but they only hook up with 2 wires + to the battery and - to the ground but then the lights stay on even when the cars off wasting battery life.
like i said i have a jeep grand cherokee 1994 this would b ideal http://www.crutchfield.com/p_546SGSW5/StreetGlow-Switch-Panel.html?search=car+lighting
but i dont have a spot in the dash to put it unless i decided i didnt want a radio lol
im in need of any kind of switch that would work in my jeep as long as it dosent look to dumb i have tryed looking for a a lighter adapter of some sort i could plug the cords into because when i wanted them off i would just have to unplug the lighter adapter i owuld much rather have it go directaly to the battery with a switch but the lighter setup would work i guess
thanks for the help
if ur not using a stereo take the red wire from the stereo harness and use it as a power supply this will only keep them on when the ignition switch is open and will shut of when the car gets turned off unless u realy need to have a switch then just uses a toggel switch but u will need to nake a hole if u dont want it to show place it under the dash near the kick panel
- RGB colors and styles of light up flying discs for day or night-time use- Recreational light-up flying disc catching fun- Retire the glow-in-the-dark disc and opt for this LED light up flying disc- Comes with the engine gun can whirl up to 20 meter height- LED powered by 3*LR1130 batteriesSpecificationsDimensions: 5.51 in x 9.45 in x 0.31 inWeight: 2.36 oz
List Price:$24.20 Sale Price: $12.74 You save: $11.46 (47%)
5 Meter RGB LED Strip Bathroom Application 2
High dynamic range imaging
Example
Photographs
4 stops
2 stops
+2 stops
+4 stops
Merged to HDR then reduced to LDR
Simple contrast reduction
Local tone mapping
Photography
Main article: Dynamic range#Photography
In photography, dynamic range is measured in EV differences (known as stops) between the brightest and darkest parts of the image that show detail. An increase of one EV or one stop is a doubling of the amount of light.
Dynamic Ranges of Common Devices
Dynamic Ranges of Common Devices
Device
Stops
Contrast
Computer LCD Display
9.5
700:1
DSLR camera (1Dmk2)
11
2048:1
Print film
7
128:1
High-dynamic-range photographs are generally achieved by capturing multiple standard photographs, often using exposure bracketing, and then merging them into an HDR image. Digital photographs are often encoded in a camera's raw image format, because 8 bit JPEG encoding clips the camera's possible dynamic range (and also introduces undesirable effects due to the lossy compression).
Any camera that allows manual over- or under-exposure of a photo can be used to create HDR images.
Some cameras have an auto exposure bracketing (AEB) feature with a far greater dynamic range than others, from the 3 EV of the Canon EOS 40D, to the 18 EV of the Canon EOS-1D Mark II.
The Pentax K-7 DSLR has an HDR mode which captures an HDR image and then outputs (only) a tone-mapped JPEG file.
Dynamic range for each ISO setting of the 1Dmk2
ISO
Dynamic Range (Stops)
50
11.3
100
11.6
200
11.5
400
11.2
800
10.7
1600
9.7
3200
8.7
Mathematics
Contrast ratio = 2(EV difference)
EV difference = log2(Contrast ratio)
The fact that an increase of 1 EV indicates a doubling of light means that EV is often represented on a base-2 logarithmic scale.
The human perception of brightness is well approximated by a Steven's power law, which over a reasonable range is close to logarithmic, as described by the Weberechner law, which is one reason that logarithmic measures of light intensity are often used.
Representing HDR images on LDR displays
Contrast reduction
HDR images can easily be represented on common LDR devices, such as computer monitors and photographic prints, by simply reducing the contrast, just as all image editing software is capable of doing.
Clipping and compressing dynamic range
Scenes with high dynamic ranges are often represented on LDR devices by cropping the dynamic range, cutting off the darkest and brightest details, or alternatively with an S conversion curve that compresses contrast progressively and more aggressively in the highlights and shadows while leaving the middle portions of the contrast range relatively unaffected.
An example of a rendering of an HDRI tone-mapped image in a New York City nighttime cityscape.
Tone mapping
Main article: Tone mapping
Tone mapping reduces the dynamic range, or contrast ratio, of the entire image, while retaining localized contrast (between neighboring pixels), tapping into research on how the human eye and visual cortex perceive a scene, trying to represent the whole dynamic range while retaining realistic color and contrast.
Images with too much tone mapping processing have their range over-compressed, creating a surreal low-dynamic-range rendering of a high-dynamic-range scene.
Comparison with traditional digital images
Information stored in high dynamic range images typically corresponds to the physical values of luminance or radiance that can be observed in the real world. This is different from traditional digital images, which represent colors that should appear on a monitor or a paper print. Therefore, HDR image formats are often called "scene-referred", in contrast to traditional digital images, which are "device-referred" or "output-referred". Furthermore, traditional images are usually encoded for the human visual system (maximizing the visual information stored in the fixed number of bits), which is usually called "gamma encoding" or "gamma correction". The values stored for HDR images are often gamma compressed (power law) or logarithmically encoded, or floating-point linear values, since fixed-point linear encodings are increasingly inefficient over higher dynamic ranges.
HDR images often use a higher number of bits per color channel than traditional images to represent many more colors over a much wider dynamic range. 16-bit ("half precision") or 32-bit floating point numbers are often used to represent HDR pixels. However, when the appropriate transfer function is used, HDR pixels for some applications can be represented with as few as 1012 bits for luminance and 8 bits for chrominance without introducing any visible quantization artifacts.
History of HDR photography
1850
The idea of using several exposures to fix a too-extreme range of luminance was pioneered as early as the 1850s by Gustave Le Gray to render seascapes showing both the sky and the sea. Such rendering was impossible at the time using standard techniques, the luminosity range being too extreme. Le Gray used one negative for the sky, and another one with a longer exposure for the sea, and combined the two in a single picture in positive.
1930
High dynamic range imaging was originally developed in the 1930s and 1940s by Charles Wyckoff. Wyckoff's detailed pictures of nuclear explosions appeared on the cover of Life magazine in the mid 1940s. Wyckoff implemented local neighborhood tone remapping to combine differently exposed film layers into one single image of greater dynamic range.
1980
The desirability of HDR has been recognized for decades, but its wider usage was, until quite recently, precluded by the limitations imposed by the available computer processing power. Probably the first practical application of HDRI was by the movie industry in late 1980s and, in 1985, Gregory Ward created the Radiance RGBE image file format which was the first (and still the most commonly used) HDR imaging file format.
Wyckoff's concept of neighborhood tone mapping was applied to video cameras by a group from the Technion in Israel led by Prof. Y.Y.Zeevi who filed for a patent on this concept in 1988. In 1993 the first commercial medical camera was introduced that performed real time capturing of multiple images with different exposures, and producing an HDR video image.
Modern HDR imaging uses a completely different approach, based on making a high-dynamic range luminance or light map using only global image operations (across the entire image), and then tone mapping this result. Global HDR was first introduced in 1993 resulting in a mathematical theory of differently exposed pictures of the same subject matter that was published in 1995 by Steve Mann and Rosalind Picard. In 1997 this global-HDR technique of combining several differently exposed images to produce a single HDR image was presented to the computer graphics community by Paul Debevec.
This method was developed to produce a high dynamic range image from a set of photographs taken with a range of exposures. With the rising popularity of digital cameras and easy-to-use desktop software, the term HDR is now popularly used to refer to this process. This composite technique is different from (and may be of lesser or greater quality than) the production of an image from a single exposure of a sensor that has a native high dynamic range. Tone mapping is also used to display HDR images on devices with a low native dynamic range, such as a computer screen.
1996
Steve Mann developed and patented the global-HDR method for producing digital images having extended dynamic range at the MIT Media Laboratory. Mann's method involved a two-step procedure: (1) generate a single floating point image array by global-only image operations (operations that affect all pixels identically, without regard to their local neighborhoods); and then (2) convert this image array, using local neighborhood processing (tone-remapping, etc.), into an HDR image. The image array generated by the first step of Mann's process is called a "lightspace image", "lightspace picture", or "radiance map". Another benefit of global-HDR imaging is that it provides access to the intermediate light or radiance map, which has been used for computer vision, and other image processing operations.
1997
In 1997 this technique of combining several differently exposed images to produce a single HDR image was presented to the public by Paul Debevec.
2005
A tone-mapped rendering of an HDR photo taken in Ithaca, New York
Photoshop CS2 introduced the Merge to HDR function.
In many ways, Photoshop CS2's HDR function is the holy grail of dynamic range. With properly shot and processed files it allows photographers to easily create images that were previously impossible, or at least very difficult to accomplish. But, good as it is, like a gun or nuclear power, it can be a force for evil as well as good.
Not every image needs to have 10-15 stops of dynamic range. In fact, most photographs look quite nice, thank you very much, with the 5-7 stops of dynamic range that we're used to. I fully expect to see some really silly if not downright ugly images in the months ahead, as photographers get their copies of Photoshop CS2 and start discovering what the HDR function is capable of.
But, as with all such tool [sic], in the hands of sensitive artists and competent craftsmen, I'm sure that we will start to be shown the world in new and exciting ways.
Michael Reichmann , Luminous Landscape
Video
Until recently there were no "pure" examples of HDR based cinematography, since the effects were most commonly used during composited sequences in films. However with the advent of low cost consumer digital cameras, many amateurs began posting tone mapped HDR timelapse videos on the Internet. In 2008 Mobius/Quark Films released "Silicon Valley Timelapse" which is said to feature almost 1.1 million frames of tone mapped HDR, making it the largest single source of tone mapped HDR footage available to date.[citation needed]
See also
Methods
High dynamic range rendering
Wide dynamic range
File Formats
Comparison of graphics file formats
Radiance RGBE image format, .hdr
OpenEXR, .exr
Logluv TIFF, .tiff
Unified Color BEF, .bef
scRGB colorspace
Software
See HDR (Software)
Radiance - HDR rendering software (free)
Hypershot - HDR rendering software
CinePaint - open source HDR image editing software, forked from GIMP in 1998
Unified Color HDR PhotoStudio an advanced HDR imaging software
Highlight headroom
Photomatix Pro (MacOSX, Win32; USD 99; free trial with watermark)
SilverFast HDR / HDR Studio 48 bit per pixel image processing software
Hugin - open source HDR merging and panorama stitching software (Linux, MacOSX, Unix, Windows; GPL-2+ free of cost)
^ Reinhard, Erik; Ward, Greg; Pattanaik, Sumanta; Debevec, Paul (2006). High dynamic range imaging: acquisition, display, and image-based lighting. Amsterdam: Elsevier/Morgan Kaufmann. p. 7. ISBN 978-0-12-585263-0. "Images that store a depiction of the scene in a range of intensities commensurate with the scene are what we call HDR, or 'radiance maps.' On the other hand, we call images suitable for display with current display technology LDR."
^ Cohen, Jonathan and Tchou, Chris and Hawkins, Tim and Debevec, Paul E. (2001). Steven Jacob Gortler and Karol Myszkowski. ed. "Real-Time High Dynammic Range Texture Mapping". Proceedings of the 12th Eurographics Workshop on Rendering Techniques (Springer): 313320. ISBN 3-211-83709-4.
^ Vassilios Vonikakis and Ioannis Andreadis (2008). "Fast Automatic Compensation of Under/Over-Exposured Image Regions". in Domingo Mery and Luis Rueda. Advances in image and video technology: Second pacific rim symposium, PSIVT 2007, Santiago, Chile, December 17-19, 2007. p. 510. ISBN 9783540771289. http://books.google.com/books?id=vkNfw8SsU3oC&pg=PA510&dq=hdr+sdr+"standard+dynamic+range"&ei=gqe6Svq0IZfGM7KehMYP#v=onepage&q=hdr sdr "standard dynamic range"&f=false.
^ a b R. N. Clark. "Film versus Digital Summary". http://www.clarkvision.com/imagedetail/film.vs.digital.summary1/index.html. Retrieved 2010-02-28.
^ "Auto Exposure Bracketing by camera model". http://hdr-photography.com/aeb.html. Retrieved 18 August 2009.
^ "The Pentax K-7: The era of in-camera High Dynamic Range Imaging has arrived!". http://www.adorama.com/alc/blogarticle/11608. Retrieved 18 August 2009.
^ R. N. Clark. "Procedures for Evaluating Digital Camera Sensor Noise, Dynamic Range, and Full Well Capacities; Canon 1D Mark II Analysis". http://www.clarkvision.com/imagedetail/evaluation-1d2/index.html. Retrieved 2009-08-21.
^ Stanley Smith Stevens and Geraldine Stevens (1986). Psychophysics: Introduction to its Perceptual, Neural, and Social Prospects. Transaction Publishers. pp. 208209. ISBN 9780887386435. http://books.google.com/books?id=r5JOHlXX8bgC&pg=PA208&dq=eye+logarithmic+power-law&lr=&as_brr=3&ei=TSyOSqTWHIuWlQS2sZG5Bw#v=onepage&q=eye logarithmic power-law&f=false.
^ Vernon B. Mountcastle (2005). The Sensory Hand: Neural Mechanisms of Somatic Sensation. Harvard University Press. pp. 1617. ISBN 9780674019744. http://books.google.com/books?id=WOmqKSheygYC&pg=PA17&dq=logarithmic+weber-fechner&lr=&as_brr=3&ei=9DKOSrTaHJCqkASHxZShBw#v=onepage&q=logarithmic weber-fechner&f=false.
^ Leslie Stroebel and Richard D. Zakia (1995). The Focal Encyclopedia of Photography (3rd ed.). Focal Press. p. 465. ISBN 9780240514178. http://books.google.com/books?id=CU7-2ZLGFpYC&pg=PA465&dq=logarithmically+light+nearly&lr=&as_brr=3&ei=UjSOSouBEKWQkAT12-GmBw#v=onepage&q=logarithmically light nearly&f=false.
^ a b Greg Ward, Anyhere Software. "High Dynamic Range Image Encodings". http://www.anyhere.com/gward/hdrenc/hdr_encodings.html.
^ "The RADIANCE Picture File Format". http://radsite.lbl.gov/radiance/refer/Notes/picture_format.html. Retrieved 2009-08-21.
^ Fernando, Randima (2004). "26.5 Linear Pixel Values". Gpu Gems. Boston: Addison-Wesley. ISBN 0321228324. http://http.developer.nvidia.com/GPUGems/gpugems_ch26.html.
^ Max Planck Institute for Computer Science. "Perception-motivated High Dynamic Range Video Encoding". http://www.mpi-sb.mpg.de/resources/hdrvideo/.
^ J. Paul Getty Museum. Gustave Le Gray, Photographer. July 9 September 29, 2002. Retrieved September 14, 2008.
^ US patent application 5144442, Ginosar, R., Hilsenrath, O., Zeevi, Y., "Wide dynamic range camera", published 1992-09-01
^ Technion - Israel Institute of Technology (1993). Adaptive Sensitivity. http://visl.technion.ac.il/research/isight/AS/.
^ "Compositing Multiple Pictures of the Same Scene", by Steve Mann, in IS&T's 46th Annual Conference, Cambridge, Massachusetts, May 9-14, 1993
^ S. Mann and R. W. Picard. "On Being ndigital With Digital Cameras: Extending Dynamic Range By Combining Differently Exposed Pictures". http://citeseer.ist.psu.edu/mann95being.html.
^ a b US patent application 5828793, Steve Mann, "Method and apparatus for producing digital images having extended dynamic ranges", published 1998-10-27
^ a b "Merge to HDR in Photoshop CS2". http://www.luminous-landscape.com/tutorials/hdr.shtml. Retrieved 2009-08-27.
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Comparison of display technology
Categories: HDR file formats | Computer graphics | Photographic techniques | 3D computer graphicsHidden categories: All articles with unsourced statements | Articles with unsourced statements from November 2009 About the Author
Rgb Led Strip Whats it called: when you have LED's on the back of your TV that change color to match whats on the screen?
- I recently installed RGB LED strips behind my tv to reduce eye strain.
- Last year I read about (and saw a movie about) a RGB controller that can change the color of the LED strips to match the image color on your TV in real time, furthermore reducing the strain on the viewers eyes.
Can anyone help me out with tracking down this controller, or information on this technology?
I found out what it's called...
Ambilight ! ...and apparently it's exclusive to Philips TV's at the moment... I hope someone out there can point me in the direction of an aftermarket controller?
I've heard of ambient lighting but not sure if that's quite it
Use the RGB LED Light Strip Amplifier to turn up the brightness on your LED lights. Increasing light amplification with a pulse width modulation, this light controller turns your LEDs up to twice their normal brightness. Use this LED light controller to illuminate under cabinets in your kitchen or workshop to illuminate counter tops. For railings or under stairs these LED tubes help light the way at night. This item ships directly from the manufacturer. Product usually arrives in 4-10 business days, depending on destination, including order processing and shipping. APO/FPO shipping unavailable
Elation ACCENT STRIP RGB The Accent Strip RGB is a very thin, LED-circuit-strip-tape with nine bright RGB (Red, Blue & Green) LEDs. It can be mounted to almost any surface using it''''s built-in adhesive tape. The Accent Strip RGB can be used in various indoor applications; at home, in the office, a retail environment or any various compact space. Great for nightclubs, bars and DJs too! With the use of the easy-to-use control box users can select between 7 colors and 3 operational modes. Included in each kit: 4x 9.75-inch (250mm) self-adhesive RGB LED strips 1x control box 3x 44-inch (1100mm) extension cables 1x AC Adapter (12V, 1000mA) Specifications: 3 operational modes, 7 color (red, green, blue, yellow, pink, violet and white) Very smooth field with rich color palettes created by mixing the Red, Green and Blue LEDs. LED Advantages: Long life (50,000 hrs.), low power consumption, low heat Power Consumption (4 strips): 8W max Up to 4 LED strips can be linked to one power supply Multi-voltage: 90-240V, 50/60Hz Dimensions (LxWxH - each strip): 9.75” x .4” x .07” / 250x10x2mm Weight (entire kit): .5 lbs. / .26 kg. Get Your Elation ACCENT STRIP RGB Today!
ITLED RGB AmplifierCan receive PWM (Pulse Width Modulation) which applies to the LED Light StripsAmplifier will increase the quanitiy of LED Lighting more than twiceSetting: Indoor/outdoorFixture finish: PlasticDimensions: 2 inches high x 5.5 inches wide x 3 inches deep This fixture does need to be hard wired. Professional installation is recommended.
List Price:$25.00 Sale Price: $22.50 You save: $2.50 (10%)
TheGeekRedneck Review - PopBuying RGB LED Strip Lights
Is there a way to add a second controller to my rf controller?
I have two rgb led strip controllers w/ remotes but I only want to use one remote to control both controllers, which would mean 1 remote controls both led strips
It depends whether the two controllers can be networked or to use the same RF (or IR) codes. If so, one remote can control both. You don't say what you have, but see the link for one brand that specifically mentions networking.
