diy cylindrical anamorphic lens - AVS Forum
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post #1 of 23 Old 05-02-2010, 06:33 AM - Thread Starter
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after long time finally my cylindrical anamorphic lens just finished
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post #2 of 23 Old 05-02-2010, 10:50 AM
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Looks promising, any pics of it in action. Is it something that fellow DIY'ers can look into or are you looking to distribute the product. Details please
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post #3 of 23 Old 05-02-2010, 05:18 PM
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This looks awesome. How does the astigmatism adjustment work?

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post #4 of 23 Old 05-02-2010, 05:59 PM - Thread Starter
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adiust astigmatism by move posterior element it not easy like focus ring of shneider
but I think that adjust astigmatism is doing only at the first time we instal the lens .
Range of motion is about 1.4 cm is enough.
thank cavx
and screen shot will be here soon
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post #5 of 23 Old 05-02-2010, 06:08 PM - Thread Starter
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Quote:
Originally Posted by oman321 View Post

Looks promising, any pics of it in action. Is it something that fellow DIY'ers can look into or are you looking to distribute the product. Details please

I 'm interesting in cih and diy the anamorphic lens for 2 years ago
start with 2 prism, and finally 4 element cylindrical lens
in this thread i only show about anamorphic lens design. and technical discussion.please do not ask about selling or price of the lens otherwise this thread will be lock
thank you for your comment
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post #6 of 23 Old 05-03-2010, 04:05 AM
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How deep is this lens?

What throw distances can this lens operate?

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post #7 of 23 Old 05-03-2010, 04:20 AM - Thread Starter
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Quote:
Originally Posted by CAVX View Post

How deep is this lens?

What throw distances can this lens operate?

12 cm deep
anterior diameter16 cm
work at throw ratio at least 1.5
but for my hometheater is TR2.0 will be exellent
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post #8 of 23 Old 05-03-2010, 05:53 AM
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Quote:
Originally Posted by dr.nop View Post

12 cm deep
anterior diameter16 cm
work at throw ratio at least 1.5
but for my hometheater is TR2.0 will be exellent

Interesting. Mine is 131mm deep (so 11mm deeper) and it works in perfect focus out to 6m. It works with TRs down to 1.4:1 (tested) and I believe 1.3:1, however after 6m I need a spacer plate to allow an increase to the spacing between the glass.

How wide is your screen?

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post #9 of 23 Old 05-03-2010, 06:21 AM
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Looking foward to the pics dr.nop, no price talk I promise As a fellow DIY lens maker (although not even remotely close as sophisticated as you) I was hoping it would be something achievable by us daring DIY'ers.

Can't wait to see all you have to show us.
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post #10 of 23 Old 05-03-2010, 07:40 AM - Thread Starter
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some screen shot take by hand no tripod. i'm not good in taking photograph just looking for fun
focus is edge to edge
no CA was seen.
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post #11 of 23 Old 05-03-2010, 07:55 AM
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Cool lens! It looks like the front elements are squared off rather than round like your rear element, I'm guessing to save money on extra glass that would go unused anyways. If this is the case, have you thought about squaring off the front portion of the case, so that the rear portion is circular and the front is rectangular? I'm primarily asking because that could again eliminate extra material that's not needed on the front, and give the front piece a slightly sleeker look (IMO, anyways). Great job though, that lens looks very professional and polished.

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post #12 of 23 Old 05-03-2010, 08:05 AM - Thread Starter
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this may not be the last version ,I may develop focusring for adjusting astigmatism in future and this design is so luxurious than square , I think
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post #13 of 23 Old 05-03-2010, 03:49 PM
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So how large is this screen?

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post #14 of 23 Old 05-04-2010, 05:31 AM - Thread Starter
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Quote:
Originally Posted by CAVX View Post

So how large is this screen?

my screen is stewart cine w 115" throw ratio 2.0 pj jvc rs 15
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post #15 of 23 Old 05-04-2010, 05:41 AM
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Quote:
Originally Posted by dr.nop View Post

my screen is stewart cine w 115" throw ratio 2.0 pj jvc rs 15

Is the 115" a diagonal or with?

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post #16 of 23 Old 05-04-2010, 05:57 PM - Thread Starter
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Quote:
Originally Posted by CAVX View Post

Is the 115" a diagonal or with?

diagonal
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post #17 of 23 Old 05-05-2010, 03:55 AM
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Quote:
Originally Posted by dr.nop View Post

diagonal

So about 105" wide and why the depth works. I'd be interested in feedback for longer throws (same TR).

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post #18 of 23 Old 05-11-2010, 08:56 PM - Thread Starter
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screen shot from avata
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post #19 of 23 Old 05-11-2010, 10:51 PM
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Quote:
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screen shot from avata

Where

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post #20 of 23 Old 07-13-2010, 08:42 PM
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Where

Here it is...
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post #21 of 23 Old 07-14-2010, 06:24 AM - Thread Starter
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thank you very much
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post #22 of 23 Old 07-14-2010, 06:19 PM
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Quote:
Originally Posted by dr.nop View Post

thank you very much

dr.nop, how did you go at longer throws?

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post #23 of 23 Old 07-15-2010, 05:31 AM - Thread Starter
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Quote:
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dr.nop, how did you go at longer throws?

right now ,i use 2.0 TR if longer TR spacer for posterior element may need like yours
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