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	Foveon's revolutionary X3 sensor: Digital Photography Review
		Foveon X3 pixels maximize the use of light since all three colors are collected at each pixel.
		Foveon X3 image sensors are the world’s only image sensors that capture color images by taking advantage of the natural color-separating properties of silicon.
		Foveon is the first and only company to use silicon color separation as a foundation for the design of color image sensors for digital cameras.
	www.dpreview.com /news/0202/02021101foveonx3.asp (1720 words)

	Foveon - Direct Image Sensors
		A direct image sensor is an image sensor that directly captures red, green, and blue light at each point in an image during a single exposure.
		Foveon pioneered the development of the direct image sensor using the most advanced developments in semiconductor design, image processing, and signal processing.
		This was due to the fact that CCD digital image sensors were only capable of recording just one color at each point in the captured image instead of the full range of colors at each location.
	www.foveon.com /article.php?a=67 (473 words)

	Foveon X3 sensor - Wikipedia, the free encyclopedia
		As of 2005, the Foveon X3 sensor is only used in the Sigma SD9 and SD10 digital SLR cameras and the Polaroid x530 compact digital camera.
		Each pixel of a mosaic sensor is covered by a light filter that passes only one of the primary colors, absorbing the other two.
		Since the depth of all three color sensing layers in the silicon crystal of the Foveon X3 sensor is only about three micrometres, the depth dimension has negligible effect on focusing or chromatic aberration.
	en.wikipedia.org /wiki/Foveon_X3_sensor (675 words)

	Foveon X3 Pixel Page (Site not responding. Last check: 2007-10-17)
		Since the number of pixel sensors in such cameras is equal to the number of pixels in the output files that they produce, it was natural to use that number as a description of the camera.
		Foveon's X3 sensor technology further stretched the relationship between pixel sensors and pixels in the output image file.
		This rule for three-chip cameras suggests that only pixel sensors on a single chip should be counted, so the "total number of spatially sampled pixels," or total number of photodetectors on an X3 sensor, could be used as the number of effective pixels.
	www.x3f.info /technotes/x3pixel/pixelpage.html (1565 words)

	Digital Sensor Is Said to Match Quality of Film
		Foveon's sensor significantly simplifies the process of capturing a digital image and avoids most of the color aberrations that have plagued digital photography.
		Foveon's sensor, rather than break images into separate colors and distribute them among separate pixels, captures color by measuring how deeply photons of light penetrate the surface of the imaging material.
		Foveon's new sensor technology, which the company calls X3, is a departure from the two types of image sensors that have proliferated in a wide range of consumer products: CMOS, which is pronounced SEE- moss and stands for complementary metal-oxide semiconductor, and a more complex variety called C.C.D., for charged coupled device.
	www.zonezero.com /magazine/news/sensor.html (1288 words)

	Photo News Today » Foveon Releases Highest Resolution Professional X3 Sensor
		Foveon’s proprietary X3 technology is the only image sensor technology that stacks red, green and blue pixels vertically, increasing the information density of the recorded image while simultaneously eliminating the color sampling artifacts found with other image sensors.
		Foveon Inc. was founded in 1997 by Dr. Carver Mead, a pioneer in solid-state electronics and VLSI design, and professor emeritus at the California Institute of Technology.
		Foveon X3 sensors are built using a pixel layering concept in which red, green, and blue pixels are stacked on top of each other.
	www.photonewstoday.com /?p=2369 (715 words)

	Storia della macchina fotografica - Comunicato stampa Foveon X3
		Foveon Inc., a technology leader in high quality digital photography, created the new Foveon X3 image sensor, the world's first color image sensor that captures red, green and blue light at each and every pixel.
		Foveon partnered with National Semiconductor, one of the company's initial investors, to develop the fabrication process for the Foveon X3 technology.
		Foveon is the first and only company to use silicon color separation for designing color image sensors for digital cameras.
	www.photogallery.it /storia/ifoveon.html (495 words)

	Steve's Digicams - Breaking News - Foveon 02/11/02 Press Release
		The image sensors utilize the company's new Foveon X3 technology and are the world's first full-color image sensors that capture red, green and blue light at each and every pixel.
		Foveon's first customer for the Foveon X3 technology is Sigma Corporation, which is using the F7-35X3-A25B image sensor in the Sigma SD9 SLR digital camera.
		Foveon, Inc. was founded in 1997 by Dr. Carver Mead, a pioneer in solid-state electronics and VLSI design.
	www.steves-digicams.com /foveon_02112002_pr.html (1651 words)

	Laputan Logic - Digital photography that's better than film
		X3 does far better than this approach, capturing all three colours per pixel by layering the three colour detectors on top of each other in a manner similar to conventional 35mm colour film.
		In this case, a 2-megapixel file taken with a mosaic sensor is compared to a 2-megapixel file taken with Foveon X3 technology (more fully described as "2 MP x 3 layers" to reflect that each pixel measures three colors instead of one).
		The difference is that Foveon X3 image sensors measure full color at each and every pixel location, while mosaic sensors capture 50% of the green and just 25% of the red and blue.
	www.laputanlogic.com /articles/2003/01/19-87897713.html (1010 words)

	Foveon and Sigma reveal SD-9 pricing: Digital Photography Review
		The Foveon X3 image sensor is the world's first full-color image sensor that captures red, green and blue light at every pixel in a single exposure.
		The Foveon X3 technology breakthrough is accomplished by embedding three photodetectors in silicon at each pixel.
		Unlike image sensors used in current digital cameras that use a single layer of photodetectors and only capture one color per pixel, Foveon X3 image sensors use three layers of photodetectors and capture all three primary colors (red, green and blue) at every pixel.
	www.dpreview.com /news/0209/02092001sigmasd9price.asp (718 words)

	creativepro.com - Foveon X3 Image Sensor Receives 2002 'Best of What's New Award' from Popular Science Magazine
		Foveon, Inc., a technology leader in high quality digital photography, announces that the new Foveon® X3™ image sensor has been chosen by Popular Science magazine to receive the "Best of What's New" Grand Award in the Photo Category.
		The Foveon X3 sensor was chosen by CHIP magazine because of its revolutionary technology that will have far reaching impact on the digital camera and video markets.
		The new line of Foveon image sensors utilize the company's new Foveon X3 technology and are the world's first full-color image sensors that capture red, green and blue light at each and every pixel.
	www.creativepro.com /story/news/18184.html (621 words)

	Geek.com Geek News - Foveon X3 image sensor: color on 1 chip (Site not responding. Last check: 2007-10-17)
		The Foveon X3 CMOS-based chips are a breakthrough in digital image capturing, as there is only a single chip needed to capture full color images, as opposed to earlier CMOS and CCD-based schemes which require three chips, each capturing only red, green, or blue data.
		Foveon uses the natural tendency of silicon to absorb different colors of light at different depths to capture three colors in a single chip.
		Foveon X3 chips are manufactured using standard.18 micron CMOS technology, meaning that Foveon can mass produce them at any.18 micron fabrication plant--just as Intel or AMD produce their chips.
	www.geek.com /news/geeknews/2002feb/chi20020212010228.htm (2834 words)

	Pros and Cons of the Sigma SD10 Digital SLR Camera
		The Canon 16.7 megapixel sensor is nearly 5x the resolution, with better color and lower noise, at higher ISOs, than the Foveon X3 Pro 10M sensor, and even the 6 and 8 megapixel Canon CMOS sensors have higher resolution and a smaller crop factor than the Foveon sensor.
		But the Foveon advantage was not supposed to be increased resolution, it was supposed to be that their sensor produced more accurate color (since each pixel had its own set of three photodetectors (RGB), rather than having to calculate the color of each pixel from adjoining pixels as is done on a Bayer sensor).
		Foveon claim to fame was supposed to be more accurate color, because the color of each spatial pixel would be calculated from the three layered photodetectors, rather than calculated from the colors of adjoining spatial pixels.
	nordicgroup.us /sigma (7470 words)

	Augusta Georgia: Technology:New sensor improves digital camera images 03/25/02
		The sensor is said to capture improved digital pictures (three times better - hence the X3 designation) at a lower cost and with less battery consumption than the sensors in today's digital cameras.
		Foveon uses a sensor (CMOS) that uses less battery power and is less expensive to produce than the sensors (CCDs) in most of today's digital cameras.
		In case you were wondering where Foveon got its name, Foveon's Eric Zarakov explains: "The fovea is the part of the human eye's retina that records the sharpest detail, and the 'eon' in the name stands for electronics.
	chronicle.augusta.com /stories/032502/tec_124-6868.shtml (615 words)

	Sigma SD10
		The newest X3 sensor doubles the sensitivity and maximum exposure times of the old design and increases the dynamic range.
		Foveon also claims "The X3 Pro 10M delivers the highest effective resolution possible without color artifacts for the 25mm optical format." This is something we'll be looking closely at during testing as color artifacts were a problem we found in the previous generation.
		Foveon claims that since the X3 is capturing full color at each pixel location, rather than the RGB value captured at each pixel by other processors, that the X3 produces the equivalent of a 10.2 megapixel image.
	www.vividlight.com /articles/3212.htm (1080 words)

	theage.com.au - The Age
		Imaging sensors are the "main chip" inside of digital cameras, the eye that records images onto digital film.
		Foveon's new X3 sensor utilises unique pixels that capture different colours at different "depths" within the silicon.
		So far, photography lens maker Sigma is the first to announce a camera based upon the Foveon X3 sensor, although the new sensor has received the backing from several manufacturers and is expected to show up in low-priced digital cameras later this year.
	www.theage.com.au /articles/2002/04/02/1017206194300.html (628 words)

	Foveon's Breakthrough X3 Sensor for Digital Photography Wins Prestigious Innovation Award from CHIP Magazine at CeBIT
		X3 sensor was chosen because of its revolutionary technology that will have far reaching impact on the digital camera and video.
		Foveon X3 image sensors dramatically improve photographs from digital cameras by capturing three times the color resolution of comparable image sensors found in today's digital cameras.
		Foveon, Inc. (www.foveon.com) was founded in 1997 by Dr. Carver Mead, a pioneer in solid-state electronics and VLSI design.
	www.national.com /news/item/0,1735,745,00.html (502 words)

	New Polaroid X530 uses Foveon X3 sensor \| Digital Camera Review
		Foveon Inc., a technology leader in high-quality digital image capture products, announced during PMA that a new Polaroid brand digital camera will incorporate the 4.5 megapixel Foveon X3 direct image sensor.
		Foveon X3 direct image sensors are the only image sensors that directly capture color in three layers, just like color film.
		According to a Foveon spokesman on the show floor: "This is not a sign that Sigma and Foveon are breaking up any cooperation between them" However, Olympus has also announced the addition of Sigma to the roster of companies supporting the Four Thirds System standard for digital SLR camera systems!
	www.letsgodigital.org /en/news/articles/story_924.html (318 words)

	Image Sensor employs X3 stacked pixel design., Foveon, Inc.
		The 10.2 Megapixel F7N direct image sensor is the second generation X3 image sensor, which increased the ISO range from 100 to 800, and added an extended mode option to ISO 1600.
		Foveon X3 image sensors are the world’s only direct image sensors, which capture red, green, and blue light at every pixel location, and are the first image sensors that leverage silicon’s inherent color separation property.
		Foveon X3 technology is highly scalable for a wide range of cameras including digital still/video cameras, PDAs, cell phones, security cameras, and scientific cameras.
	news.thomasnet.com /fullstory/452804/2399 (1221 words)

	Sigma SD9 Digital Camera Preview and Foveon Discussion (Site not responding. Last check: 2007-10-17)
		According to Foveon this sensor is the world's first full-color image sensor that captures red, green, and blue light at each and every pixel.
		One can address the sensor in such a way that the whole sensor may be redivided into larger pixel sizes, summing up the the data of the smaller pixels making up the larger pixel into the output data for the larger pixel.
		The sensor is capable of capturing about the same level of detail as a 7mp bayer mask sensor, this has been demonstrated mathematically by folks who can actually understand the math.
	www.photo.net /sigma/sd9 (12740 words)

	Meet the chip that will revolutionize digital photography
		He started Foveon Inc. in 1997 with the aim of improving the performance of digital cameras--first in high-end professional systems, and now, with the new sensor, in consumer models as well.
		Foveon's chip doesn't pre-assign a color to a pixel; instead, it determines color based on how deeply the photons from the focused image penetrate the X3 sensor.
		Foveon is able to combine groups of pixels in such a manner that resolution is lowered while the ability to capture images quickly is enhanced.
	www.zdnet.com /anchordesk/stories/story/0,10738,2847371,00.html (797 words)

	February 2002 News Archive: Digital Photography Review
		Foveon scored well by not only receiving an award for the innovative X3 image sensor but also in a round about way in the shape of Sigma's award for the SD9.
		This sensor is ideally sized and specified to be used in a 35 mm SLR bodied D-SLR (it would produce a 1.5x focal length multiplier).
		Foveon provided dpreview with an early prototype sensor in a standard Foveon studio body (the same used for their Foveon II Portrait Camera).
	www.dpreview.com /news/0202/archive.asp (4098 words)

	Sigma reveals Foveon X3 SD9 successor - Digital Photography Now
		A new version of the Foveon X3 sensor chip used remains the same physical size and resolution (2268x1512x3), though some developmental improvements have been made, including the addition of microlenses.
		X3 differs from conventional CCD and CMOS sensors because a bayer filter, which records the intensity of a single primary colour at each pixel site, is not used.
		However, fine-tuning the design of the X3 chip has been a challenge for Sigma and while the first-generation SD9 camera showed a lot of promise, there was some evidence that colour information that ought only apply to one photodiode, was evident in other photodiodes collecting light of the two other different primary colours.
	dpnow.com /387.html (587 words)

	A-Digital-Eye.com - All about digital photography including new digital camera reviews & breaking news!
		Foveon and Sigma are announcing today the new Sigma SD10 DSLR camera, the first to feature a newly improved and enhanced X3 Pro 10M Foveon image sensor.
		X3 Fill Light is designed for images taken under lighting conditions such as indoor-outdoor scenes, backlit portraits, or scenes with mixed lighting.
		The Foveon X3 PRO 10M direct image sensor has a total of 10.2 million red, green, and blue pixels that are organized into three layers (2268 x 1512 x 3 layers).
	www.a-digital-eye.com /SigmaFoveon.shtml (3369 words)

	National Semiconductor Licenses Foveon's X3™ Sensor Technology To Expand Portfolio of Imaging Solutions
		Foveon, Inc., a privately held company partially funded by National and founded by Dr. Carver Mead, a pioneer in solid state electronics and VLSI design, is rapidly redefining digital photography using analog chips manufactured at National's state-of-the-art fabrication plant in South Portland, Maine.
		In addition to developing the world's first 16.8-million pixel image sensor, Foveon has developed the X3 image sensor, the first and only image sensor that captures green, red and blue light at each and every pixel.
		The breakthrough Foveon X3 full-color image sensor is currently shipping in the Sigma SD9 digital SLR camera.
	www.national.com /news/item/0,1735,844,00.html (558 words)

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