How can I decide the gap distance between LCD and Fresnel lens ? - diyAudio
Go Back   Home > Forums > General Interest > Everything Else > The Moving Image > DIY Projectors

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 27th February 2014, 12:56 AM   #1
diyAudio Member
Join Date: Feb 2014
Unhappy How can I decide the gap distance between LCD and Fresnel lens ?

As I attach that diagram,

that gap distance, how can I calculate this distance?

any reference?
Attached Images
File Type: png ???? 2014-02-24 19.33.18.png (309.1 KB, 33 views)
  Reply With Quote
Old 22nd March 2014, 08:16 PM   #2
diyAudio Member
Join Date: Mar 2012
Ideally you'd want this to be between 20mm and 30mm but you can have a much larger gap if your fresnels are considerably bigger than your LCD.

If you have it closer than 20mm you might see rings in the projected image from the fresnel lens.

In the end it's up to you to experiment with this as it does not make much of a difference in terms of projected image size
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

New To Site? Need Help?

All times are GMT. The time now is 03:11 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2