What is a Anamorphic Video Projector lens and what does it do??
When a 4/3 native DLP video
projector with a 1024 x 768 xga chip displays a 16.9 image the video
projector only utilizes 80% of the chip and displays a 1024 by 576 image
resulting in loss of light output.
Without a Anamorphic lens |
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4/3 DLP Panel 1024/768 native displaying 16/9 image |
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Projection screen image displayed on 16/9 screen.
Normally only 1024 x 576 is utilized |
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Anamorphic Lens |
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The
anamorphic lens compresses the video projector image vertically to fit the screen
appropriately
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Set Aspect Ratio to V Zoom to stretch the image vertically
to fill the entire 4:3 panel This utilizes full DLP chip brightness and
resolution.
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T he end result at the
16:9 screen is that the pixels and spaces between the pixels have been
reduced in size vertically by 25%. The full XGA DLP panel is being used
inside the projector utilizing the full 1024x768 pixels and full panel
brightness. The pixel structure at the screen is now smaller by 25%
vertically and rectangular. This is achieved optically by the anamorphic
lens and gives the overall image at the screen higher resolution and
brightness without sacrificing anything in the original wide source aspect
ratio.
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| Copyright Plasma.com ,
Information and original images provided by NEC America |
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