Controlled laser reflection

  • #1
Does someone know a device that can reflect a laser beam in order to project an image? I remember years ago I saw a microchip that had an array of small mirrors, and was able to modify the angle of those mirrors... I think it was from Texas Instruments.
 

Answers and Replies

  • #2
dlgoff
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An acoustic optical deflector device or rotating mirrors.
 
  • #3
Thanks! Could you give me a link?
 
  • #4
berkeman
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cronodragon said:
Thanks! Could you give me a link?
Here's a link to lots of resources on laser beam deflection.

http://www.optics.net/directory/search.php?q=beam+deflection

For generating a simple vector image, you can use two solenoid driven mirrors. For generating more complex raster images, you'll use one solenoid driven mirror for the y deflection, and a rotating multifacet mirror for the x deflection. In both cases, you need to be able to modulate the intensity of the beam at whatever your target video bandwidth is.
 
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  • #5
GENIERE
cronodragon said:
...I think it was from Texas Instruments.
The device is alive and well and is used in projection TV's. The technology compares well to plasma and LCD displays.

http://www.dlp.com/dlp_technology/dlp_technology_overview.asp

"DLP™ technology is a revolutionary display solution that uses an optical semiconductor to manipulate light digitally. It is a highly reliable, all-digital display chip that delivers the best picture across a broad range of products, including large screen digital TVs, and projectors for business, home, professional venue and digital cinema (DLP Cinema™). It's also a dependable technology used by leading display electronics companies worldwide, with more than 5 million systems shipped to more than 75 manufacturers since 1996.

DLP™ technology is in use wherever visual excellence is in demand. It is also a highly versatile display technology. It is the only display technology on the market that can enable the world's smallest projectors under 2-lbs., and light up the largest movie screens up to 75 feet.

The result is maximum fidelity: a picture whose clarity, brilliance and color must be seen to be believed. "
 

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