DIY anamorphic lens - Page 113

aad1972 · 8th November 2006, 01:48 AM

Extended

roar · 8th November 2006, 02:14 AM

Great photo's, thanks for sharing... now I wonder the size of each of the wedges... could I bother you to measure thouse? Might have to order me some of the smaller ones...

Budd you still have the small ones working eh?

(Budd, we've got to get together! In-laws are gone and your intro is ready

)

Mark Techer · 8th November 2006, 02:26 AM

Yeah thanks for the pics.

It looks old based on the prisms case castings. Do you know what year it was made, or who made it?

I can see the chip you were referring to in the front prism - a real shame. Cab you still use it or does it affect the image?

Please measure and post the prisms sizes as well as the distances between them. Could you replace those prisms with the J series prisms?

Awesome device

Mark

andy238 · 8th November 2006, 05:38 PM

Dang, that is a sweet lens setup. Any mechanical engineers out there that can duplicate it? I'm handy but that may be outta my league.

aad1972 · 9th November 2006, 11:33 AM

The whole thing measure 5.5" x 8"
The Distance from the front Prisim to the Back Prisim is 2.5"
None of the J series will fit in this thing

Mark Techer · 9th November 2006, 11:47 AM

So it is a lot smaller than it looks...

So where did it come from?

Mark

Bud Bray · 9th November 2006, 12:36 PM

Totally off topic, as usual...I recently re-mounted my lenses in a straight housing and the reflections i'm getting are HORRIBLE(the credits from CARS is brutal!)! I think i'll go back to the tapered one I was using. I tried to taks pictures of the image between the lenses but it really doesn't show too well. On the straight box, the first lens near the PJ reflects (looking from front to back(PJ) on the right wall, then this image is reflected thru the front(second) prism as a ghost image. The tapered housing doesn't have the same wall angle as the straight one so the reflection isn't intense. Painted insides & trying to absorbe reflections...
Just letting you know.
Bud

Mark Techer · 9th November 2006, 12:53 PM

Quote:

Originally posted by Bud Bray
Totally off topic, as usual...

No, if we're talking about our prisms based DIY lenses, we're actually back on topic

Quote:

I recently re-mounted my lenses in a straight housing and the reflections i'm getting are HORRIBLE(the credits from CARS is brutal!)! I think i'll go back to the tapered one I was using.

Did you try the cut away side like mine?

Quote:

I tried to taks pictures of the image between the lenses but it really doesn't show too well. On the straight box, the first lens near the PJ reflects (looking from front to back(PJ) on the right wall, then this image is reflected thru the front(second) prism as a ghost image. The tapered housing doesn't have the same wall angle as the straight one so the reflection isn't intense. Painted insides & trying to absorbe reflections...
Just letting you know.
Bud

Very interesting Bud. I'm quite happy with the size and shape of the
"Aussiemorphic Lens". It seems to work with minimal reflections...

Mark

Bud Bray · 9th November 2006, 01:00 PM

Did you try the cut away side like mine?

Actually I did...causing more problems...I get MORE reflection off to the right side now from the front lens facing right. Like I said, i'll go back to the tapered one & see. I think the reflection problem is magnified because we're using such large lenses & the space between. I checked the size of the light beam from the last prism & THINK I could get away with using the small J24 prisms. Of course, I don't HAVE 4 of those but maybe i'll get a couple more & try it out some time. I went with just securing the prisms in the housing & set up a track to move it out of the way. Simpl & easy for now. I just want to start WATCHING movies.

Bud

andy238 · 9th November 2006, 01:02 PM

Hey Bud,

Just thought of this... What about lining the inside of the housing with black velvet? It's used to mask the screen edge and soak up light spill there; why not inside the housing?

One drawback I can think of though is it might act like a dust collector. But if the housing is sealed it may not be too bad.

Andy

8th November 2006, 02:26 AM	#1123
Mark Techer diyAudio Member Join Date: Aug 2005	Some more question... Yeah thanks for the pics. It looks old based on the prisms case castings. Do you know what year it was made, or who made it? I can see the chip you were referring to in the front prism - a real shame. Cab you still use it or does it affect the image? Please measure and post the prisms sizes as well as the distances between them. Could you replace those prisms with the J series prisms? Awesome device Mark __________________ CIH Explained

9th November 2006, 11:47 AM	#1126
Mark Techer diyAudio Member Join Date: Aug 2005	So it is a lot smaller than it looks... So where did it come from? Mark __________________ CIH Explained

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8th November 2006, 02:14 AM	#1122
roar diyAudio Member Join Date: Jul 2006	Great photo's, thanks for sharing... now I wonder the size of each of the wedges... could I bother you to measure thouse? Might have to order me some of the smaller ones... Budd you still have the small ones working eh? (Budd, we've got to get together! In-laws are gone and your intro is ready )

8th November 2006, 05:38 PM	#1124
andy238 diyAudio Member Join Date: Jul 2006	Dang, that is a sweet lens setup. Any mechanical engineers out there that can duplicate it? I'm handy but that may be outta my league.

9th November 2006, 11:33 AM	#1125
aad1972 diyAudio Member Join Date: May 2003 Location: San Antonio, TX	The whole thing measure 5.5" x 8" The Distance from the front Prisim to the Back Prisim is 2.5" None of the J series will fit in this thing

9th November 2006, 12:36 PM	#1127
Bud Bray diyAudio Member Join Date: Feb 2006 Location: Burlington,Ontario	Totally off topic, as usual...I recently re-mounted my lenses in a straight housing and the reflections i'm getting are HORRIBLE(the credits from CARS is brutal!)! I think i'll go back to the tapered one I was using. I tried to taks pictures of the image between the lenses but it really doesn't show too well. On the straight box, the first lens near the PJ reflects (looking from front to back(PJ) on the right wall, then this image is reflected thru the front(second) prism as a ghost image. The tapered housing doesn't have the same wall angle as the straight one so the reflection isn't intense. Painted insides & trying to absorbe reflections... Just letting you know. Bud

9th November 2006, 01:00 PM	#1129
Bud Bray diyAudio Member Join Date: Feb 2006 Location: Burlington,Ontario	Did you try the cut away side like mine? Actually I did...causing more problems...I get MORE reflection off to the right side now from the front lens facing right. Like I said, i'll go back to the tapered one & see. I think the reflection problem is magnified because we're using such large lenses & the space between. I checked the size of the light beam from the last prism & THINK I could get away with using the small J24 prisms. Of course, I don't HAVE 4 of those but maybe i'll get a couple more & try it out some time. I went with just securing the prisms in the housing & set up a track to move it out of the way. Simpl & easy for now. I just want to start WATCHING movies. Bud

9th November 2006, 01:02 PM	#1130
andy238 diyAudio Member Join Date: Jul 2006	Hey Bud, Just thought of this... What about lining the inside of the housing with black velvet? It's used to mask the screen edge and soak up light spill there; why not inside the housing? One drawback I can think of though is it might act like a dust collector. But if the housing is sealed it may not be too bad. Andy

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