help...about the distance

[ywh]

Originally posted by bochinlin
(sorry my english is poor...)

Osram HQI BT 400w
15" cmv 529A
S15 Projection Lens Triplet Focal length: 320mm
220mm focal length fresnel
317 mm focal length fresnel


I don`t know what is the distance between LCD and Fresnel Lenses...and the other distance , just as the pic below



If I want to project a 100"~120" image on the screen , what is the distance with A , B, C,D ?

THANKS

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[ramkishan]

The theoritical figures for the optical circuit are A - slightly less than 220 mm, D - slightly less than 317 mm, B and C - 10 to 20 mm. In practice, one needs to adjust these distances with reference to the screen. First adjust D for a sharp image followed by A, B and C and then finally again D. Looking to these aspects, we have designed our enclosure in such a manner so that all such adjustments can be carried out easily. You may see the details by clicking http://www.drtsolutions.com/Projector.htm of our web page.