HD144 lens on any machine that uses HD8's..... - Page 4 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #91 of 203 Old 02-25-2005, 05:22 AM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Walter,
If you go do a search for the adapters that Bjorn did for adapting the HD144's to the Barco, you will find the distance he gives which are exactly correct on where the HD144 lens needs to be.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
Sponsored Links
Advertisement
 
post #92 of 203 Old 02-25-2005, 06:50 AM
WTS
AVS Special Member
 
WTS's Avatar
 
Join Date: Nov 2002
Location: Calgary
Posts: 1,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Mark,

Well I know for sure that the first piece of glass(closet to the tube) does not move in either the hd8 or hd144. They are fastened in place, the hd8 has screws around the perimeter and the hd144 has the lens barrel threaded and a threaded ring to hold it in place. The inside pieces move though(obviously I guess).
Thanks for your info and help, next time you pull your lens off have a look at the first piece of glass.

Walter
WTS is offline  
post #93 of 203 Old 02-25-2005, 01:38 PM
AVS Special Member
 
Mark_A_W's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 8,110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I must admit I don't quite understand what you are seeing.

While I haven't pulled a 144N off my pj - and I'm not going to ruin my flapping just to look - I do have a 145N sitting right in front of me.

But the 144 looks to work exactly the same way as the 145 - without removing it of course.

And the first adjustment (centre) moves the body of the lense- including the C element (the first curved one)- as a single item, toward and away from the lens mount/tube face.

Like this: Adjustment away from tube
LL

Loving my Electric Bike!!
Mark_A_W is offline  
post #94 of 203 Old 02-25-2005, 01:40 PM
AVS Special Member
 
Mark_A_W's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 8,110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
And this: Adjustment towards tube face.

If this is different in the 144, then I most humbly apologise for leading you up the garden path.

Mark
LL

Loving my Electric Bike!!
Mark_A_W is offline  
post #95 of 203 Old 02-25-2005, 01:41 PM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Walter,

I'm not sure I follow you here. When you adjust the rear optical focus adjustment, you are moving the entire lens body (which includes the rear lens) back and forth making it closer and further from the CRT glass.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #96 of 203 Old 02-25-2005, 02:12 PM
WTS
AVS Special Member
 
WTS's Avatar
 
Join Date: Nov 2002
Location: Calgary
Posts: 1,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi , Yea I'm probably the one who is confused here. I never tried moving the rear adjustment to see if the lense actually moved, it just looked like it was fixed in place. This is the first time I've seen lens this big. I'll have to play alittle with them. I'm sure you guys are correct and I'm out in left field on this. If that lense moves closer and farther from the tube like you say then I don't see why there would be a problem mounting the lens body alittle farther from the tube face. Hopefully there will be enough adjustment to compensate for the extra distance.
I'll have a look when I get home tonight and then I'll probably be the one apologizing to you guys for my confusion. Thats why its nice to have guys like you around who can set a guy on the right track.

Thanks

Walter
WTS is offline  
post #97 of 203 Old 02-25-2005, 03:31 PM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Walter,
You have it and have answered your own question.
It is the relationship of the rear of the lens body (in fact the rear most lens) to the face of the CRT glass that determines the focal point for the lens for a given throw distance. In other words for a given throw distance, there is only one very exact distance from the CRT glass that makes the lens focus. You cannot change that.
Look at the slot that the rear oprtical focus adjustment follows and you will understand what I mean.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #98 of 203 Old 02-25-2005, 04:24 PM
WTS
AVS Special Member
 
WTS's Avatar
 
Join Date: Nov 2002
Location: Calgary
Posts: 1,769
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Mark and Terry, You guys were right, the first lense does move in and out with the rear adjustment. It doesn't move very much past the end of the housing, I just hope it moves enough in the direction towards the tube face to focus.

Thanks for your help and info on this.

Walter
WTS is offline  
post #99 of 203 Old 03-10-2005, 12:09 PM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Just thought I would post what one of Galens first set of adapter looked like on someone BG808S. Here are his comments:

">Hey Galen,

I didn't turn on the pj on Tues day and did get some time last night to watch a movie. The good news is that I think the HTPC was causing the problems I was describing. This time it must have synced correctly with the pj and the image looks far sharper. I still haven't moved it closer as I'm trying to figure out how I can arrange the furniture so that the Barco is not sitting in the middle of the room. It's just acceptable now but if I have to move it another 10 or so inches.... My idea is to take the pj off its stand, put it on the floor then have the couch straddle the pj. Not great for the WAF, but that's OK as I don't have one.

Anyway the best way I can describe the image is that a veil was taken away. I guess that's partly due to the plastic gel filters being removed from the light path and the better all-glass optics of the HD144's. I can now see what everyone has been raving about. The colors are to die for, highly saturated and accurate, even on the 125" image I'm getting at the moment. Interestingly enough the blacks are better too and there is probably a good optical explanation for that too.

If you need any references for your work, look no further. This has been a very elegant answer to our prayers. My hat is off to you. Please relay this to Terry. "

Love when a plan comes together.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #100 of 203 Old 04-01-2005, 01:31 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Terry, all,

All in all a cool idea. I really like the idea. I just can't get warm with
the idea of using a heat press-fit to keep the lenses on (I know they'll
hold, but..... )

I'm thinking of machining some new mounts for my Marquee. All that needs
to be "adjusted" are the four lens mounting holes and the main hole in
the center. Other than that I can just copy the original E-home design.

Could some kind soul please tell me the exact size of the lens barrel
diameter below the mounting flange and the distance between the 4
mounting holes, since I don't have a set of HD-144 or HD-145s. Which
brings me to my next question:

Does anyone out there have a good (no scratches or dings please) set of
color corrected and color filtered HD-144 or HD-145 lenses for me? If so,
please take into consideration ($$ wise please include s&h ) that I live
in Europe.

Thanks !

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #101 of 203 Old 04-02-2005, 04:35 AM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Check w/ Matt PSI I think he has some HD144's or 145's.
I'm on the road so someone else will have to help you with dimensions.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #102 of 203 Old 04-02-2005, 12:11 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi guys,

@Terry: Thanks for the info. Will shoot Matt a PM.

@all
C'mon, some has to have the dimensions I'm looking for

BTW, when I wrote no dings or scratches, I meant the lenses of course.
I mean some has got to have a set of lenses they what to sell

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #103 of 203 Old 04-02-2005, 02:06 PM
gn2
AVS Special Member
 
gn2's Avatar
 
Join Date: Oct 2000
Location:
Posts: 4,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have the lens to measure, but no method that I can think of that is reliable enough for you to machine aluminum plates from. Maybe I could trace it on a piece of paper and fax it to you ??
Sorry I only have the set attached to my XG1350, can't sell them unless you want the whole machine, cheap.
gn2 is offline  
post #104 of 203 Old 04-02-2005, 02:21 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Paul,

Quote:


Originally posted by gn2
I have the lens to measure, but no method that I can think of that is reliable enough for you to machine aluminum plates from. Maybe I could trace it on a piece of paper and fax it to you ??

It doesn't have to be down to the last tenth of a mm Do you have a
caliper? What I need is the maximum size the lenses have (at the barrel
below the flange). That way I can make the hole 2-3mm smaller. When
I have a set of lenses, I would just need to turn out the hole a tiny bit,
making for a perfect individual fit. Of course, I >could< wait until I have
a set of lenses here, but I have some spare time now

Measuring the mounting hole to hole distance should be possible with
a caliper. Just measure from end of hole to end of hole and subtract 1
times the hole diameter.

I'm afraid if you trace it out and fax it, the fax might distort the picture.

Quote:


Originally posted by gn2
Sorry I only have the set attached to my XG1350, can't sell them unless you want the whole machine, cheap.

Well I REALLY would consider it, but s&h (and import duty fees) would
probably kill me. AND you don't really want to sell that PJ

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #105 of 203 Old 04-02-2005, 03:36 PM
gn2
AVS Special Member
 
gn2's Avatar
 
Join Date: Oct 2000
Location:
Posts: 4,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Well, I REALLY want a set of tubes for it, but after my friends disaster with VDC, I'll NEVER EVER buy tubes from them, so finding reasonable used ones is my only hope.
Shipping to you would not be all that much if you could take it by sea, I'd bet...
PS: I do have a caliper, I'll have to dig it out(if I can find it) and make those measurements for you.
gn2 is offline  
post #106 of 203 Old 04-02-2005, 03:53 PM
AVS Special Member
 
Mark_A_W's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 8,110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:


Originally posted by Lightningman
Hi Paul,



It doesn't have to be down to the last tenth of a mm Do you have a
caliper? What I need is the maximum size the lenses have (at the barrel
below the flange). That way I can make the hole 2-3mm smaller. When
I have a set of lenses, I would just need to turn out the hole a tiny bit,
making for a perfect individual fit. Of course, I >could< wait until I have
a set of lenses here, but I have some spare time now

Measuring the mounting hole to hole distance should be possible with
a caliper. Just measure from end of hole to end of hole and subtract 1
times the hole diameter.

I'm afraid if you trace it out and fax it, the fax might distort the picture.



Well I REALLY would consider it, but s&h (and import duty fees) would
probably kill me. AND you don't really want to sell that PJ

Regards,
Reinhard

A HD145 is 132.2 to 133mm in diameter at the bottom. The 144's are on the ceiling, and I aren't pulling them down

Loving my Electric Bike!!
Mark_A_W is offline  
post #107 of 203 Old 04-02-2005, 03:59 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Paul,

Quote:


Originally posted by gn2
Well, I REALLY want a set of tubes for it, but after my friends disaster with VDC, I'll NEVER EVER buy tubes from them, so finding reasonable used ones is my only hope.
Shipping to you would not be all that much if you could take it by sea, I'd bet...
PS: I do have a caliper, I'll have to dig it out(if I can find it) and make those measurements for you.

That would be cool. Thanks a bunch.

I haven't had any contact with VDC and Bill Blue did tell me some of his
problems with VDC. It took Bill a while to convince them

Just for the fun of it, the next time you have to find out s&h charges,
ask what it would cost to send a PJ overseas.

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #108 of 203 Old 04-02-2005, 04:02 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Mark,

Quote:


Originally posted by Mark_A_W
A HD145 is 132.2 to 133mm in diameter at the bottom. The 144's are on the ceiling, and I aren't pulling them down

Thanks for the info. Is this measured or taken from memory (or datasheet).
Of course, I understand that you don't want to pull the HDs just because
some fricken foreigner is asking for some silly numbers

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #109 of 203 Old 04-02-2005, 04:10 PM
AVS Special Member
 
Mark_A_W's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 8,110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have a HD145 sitting right next to me.
I used a steel rule, but if you want REALLY accurate measurements I can take it to work and use calipers (or even the CMM - a new toy).

Loving my Electric Bike!!
Mark_A_W is offline  
post #110 of 203 Old 04-02-2005, 04:24 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Mark,
Quote:


Originally posted by Mark_A_W
I have a HD145 sitting right next to me.
I used a steel rule, but if you want REALLY accurate measurements I can take it to work and use calipers (or even the CMM - a new toy).

That would be cool if could spare the time. The 145 have the same
barrel diameter as 144 AFAIK (true / not true?).

Enlighten me please what is a CMM? The only CMM I know is the
Center for Molecular Modeling

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #111 of 203 Old 04-02-2005, 04:31 PM
AVS Special Member
 
Mark_A_W's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 8,110
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Coordinate Measurement Machine.

I don't know if 144's and 145's are the same, and I'm not ruining my Flapping to find out, I'm sorry.

Loving my Electric Bike!!
Mark_A_W is offline  
post #112 of 203 Old 04-02-2005, 04:52 PM
gn2
AVS Special Member
 
gn2's Avatar
 
Join Date: Oct 2000
Location:
Posts: 4,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Ok, according to my digital caliper, they are 133.4 mm across the bottom. From mount hole to mount hole across the center, its 145.26mm.
The mount holes are 6.51mm.
gn2 is offline  
post #113 of 203 Old 04-02-2005, 05:38 PM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Paul,

Quote:


Originally posted by gn2
Ok, according to my digital caliper, they are 133.4 mm across the bottom. From mount hole to mount hole across the center, its 145.26mm.
The mount holes are 6.51mm.

Thanks for the measurement. Since your values and those of Mark
coincide, I know both of you can measure .

That's interesting. So the mount holes of the HD 145 sit almost smack
in the middle of the empty space between lens and mounting plate on
a Marquee. U.S. Precision must have done that on purpose to prevent
us modders from interchanging the lenses

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #114 of 203 Old 04-02-2005, 08:27 PM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Yup.....
144's and 145's have the same mounting holes.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #115 of 203 Old 04-02-2005, 08:52 PM
AVS Special Member
 
Larry Fine's Avatar
 
Join Date: Sep 2002
Location: Richmond, VA
Posts: 3,953
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
If I may ask, what effect would these lenses have on throw distance for a given image size? Would they let me move the 8500 12 to 18 inches closer with no or little size reduction?

Larry
www.fineelectricco.com
My system (new larger pix!)
Larry Fine is offline  
post #116 of 203 Old 04-03-2005, 04:52 AM - Thread Starter
AVS Special Member
 
Chuchuf's Avatar
 
Join Date: Jun 2000
Location: Alpharetta, GA
Posts: 5,033
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Closer but not quite that much closer.

Terry

AVS Marketplace or Videogon are the places to see F/S ads
Chuchuf is offline  
post #117 of 203 Old 04-03-2005, 07:10 AM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Terry,

Quote:


Originally posted by Chuchuf
Yup.....
144's and 145's have the same mounting holes.
Terry

Thanks for the info!

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #118 of 203 Old 04-03-2005, 09:01 AM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Paul,

Quote:


Originally posted by gn2
From mount hole to mount hole across the center, its 145.26mm.
The mount holes are 6.51mm. [/b]

One last question: Is the 145.26mm from moutng hole center to
mounting hole center? Or is it from mounting hole edge to mounting
hole edge? I.e. my question is the 145.26 the center distance or do
I need to subtract 1x the hole size from this dimension?

Oh and hope you and Mark didn't take my comment:

"Since your values and those of Mark coincide, I know both of you
can measure."

seriously. It was meant as a joke. I sincerly thank you for doing
the measurements for me!

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
post #119 of 203 Old 04-03-2005, 11:07 AM
gn2
AVS Special Member
 
gn2's Avatar
 
Join Date: Oct 2000
Location:
Posts: 4,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Inner edge of the mounting hole to inner edge of the mounting hole, that is why I gave you the size of the mounting hole too...
I take no offense at anything said on this forum by anyone, why would I ??
gn2 is offline  
post #120 of 203 Old 04-03-2005, 11:42 AM
Advanced Member
 
Lightningman's Avatar
 
Join Date: Jul 2003
Location: Germany
Posts: 761
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi Paul,

Quote:


Originally posted by gn2
Inner edge of the mounting hole to inner edge of the mounting hole, that is why I gave you the size of the mounting hole too...

Ah, okay, so center-center would be 151.7mm. Thanks for clarification!


Quote:


Originally posted by gn2
I take no offense at anything said on this forum by anyone, why would I ??

Phew. Good!

Regards,
Reinhard

Gimme a hot soldering iron. I got work to do ;o}
Lightningman is offline  
Reply CRT Projectors

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

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