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-   -   mini35's prism (https://www.dvinfo.net/forum/alternative-imaging-methods/46989-mini35s-prism.html)

Quyen Le June 29th, 2005 08:19 PM

mini35's prism
 
Anybody try to look inside of the mini35 to see if what prism they use? It looks to me from the picture (I never seen the real one) they use 1 roof prism and 1 penta prism to correct the image, this is just my opinion. Any idea?

Quyen

Dietmar Zonewicz June 30th, 2005 02:59 PM

inside there are only some roof prisms and one mirror as far as I remember.

dietmar

Quyen Le June 30th, 2005 03:35 PM

I think there should be 2 mirrors, 1 you cannot see facing backward. This 2 mirror do the job of penta prism. If only 1 mirror, the picture will be upside down.

Anders Floe July 1st, 2005 02:06 AM

There has already been a lot of prism discussion... look here:

http://www.dvinfo.net/conf/showthread.php?t=33498

Hope it helps

Quyen Le July 1st, 2005 03:50 AM

Thank you for your link. I still think 1 roof prism and 2 mirrors or 1 roof prism and 1 penta prism will give the shortest path of light. They are more expensive than the 2 right angle prisms but will give a more compact design. Thank you.

Cody Dulock July 1st, 2005 09:14 AM

did you ever get a prism design to work anders?

Quyen Le July 1st, 2005 09:27 AM

I tested with mirror and it works OK. I am ordering the prisms right now.

Cody Dulock July 1st, 2005 09:37 AM

are you getting your prisms from surplusshed.com ???

Quyen Le July 1st, 2005 09:48 AM

No. To my calculation, using 2 right angle prisms to get 24mmx18mm, 1 should be at least 24mm thick x 26mmx37mm and 1 should be at least 18mm thick x 35mmx50mm. So to make the unit compact, I ordered the size close to those. Surplusshed doesn't have those size.

Courtney Lana July 1st, 2005 04:30 PM

So where did you order from??

Court

Quyen Le July 1st, 2005 06:07 PM

AnchorOptics.com


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