I bought two Ultraoptix magnifier sheets.
I was wondering if they were any good in making a projection tv.
I am also using a 13" CRT tv. I really don't want to play around with
the yoke. How can I do this with the things that I have.

--- In DIYProjectionTV@yahoogroups.com, dhp met <dhpmet@...> wrote:
>
> Hi how are you ?
>
>   Please let me know what are the lenses you need?
>
>   I have
>
>   triplet projection lens
>   Single(miniscus) projection lens
>   Plano convex light condenser
>   Light reflector
>   Two element fresnel 11"x11" square
>
>   etc.
>
>   Please rply or call 09994288723
>
>   regards,
>   dhpmet
>
>
> greenymeany1234 <no_reply@yahoogroups.com> wrote:
>           Hi I am doing this project for a science class in school
and I need a
> lense to make one of thease and Can't get one and could really use
one
> please any help would be great
> thankyou
>
>
>
>
>
>
> ---------------------------------
>  Meet people who discuss and share your passions.  Join them now.
>
I really need any lense that would work good anyone that works good
would really be apreceiated thankyou email is alex-
patterson@...

i have not played with these diy tv projectors in some time now, but if your just getting started with them, then just pickup a cheap fresnel lens from office depot or what have you and build a cardboard box to hold the lens in front of your crt tv.   as for the backwards picture. only safe way is to flip the tv. if you really want to you could open the back of the tv and switch the 2 wires... i did this once on my small 14" tv when i first started in this hobby and it worked well. it also corrected the mirror image so you can read text properly ..   --- On Tue, 4/22/08, greenymeany1234 <no_reply@yahoogroups.com> wrote: From: greenymeany1234 <no_reply@yahoogroups.com> Subject: [DIYProjectionTV] Need help please read To: DIYProjectionTV@yahoogroups.com Date: Tuesday, April 22, 2008, 4:45 PM Hi I have been researching thease projectors for about 1year (roughly) now and am trying to build one but the problem I am haveing is getting the lense (which I can't order online) and also figuring out how to make it so i don't have to turn the tv upside down (its ok if i have to) But I am Trying to get the best quality of projector of this type CRT TV (not lcd) for the absoulute lowest price and would love it if someone had a lense I could have for free or for cheap (I would have to send cash tho)I am doing this for use in my bedroom which is in the basement and only has one window which I think I will cover up with Black out cloth And the reason I can't order online and have to send cash is I am 14 years old yes It's true but am really smart I program computers for fun and would like to give this a try. Thankyou please reply soon!

---

Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.

i have not played with these diy tv projectors in some time now, but if your just getting started with them, then just pickup a cheap fresnel lens from office depot or what have you and build a cardboard box to hold the lens in front of your crt tv.   as for the backwards picture. only safe way is to flip the tv. if you really want to you could open the back of the tv and switch the 2 wires... i did this once on my small 14" tv when i first started in this hobby and it worked well. it also corrected the mirror image so you can read text properly ..   --- On Tue, 4/22/08, greenymeany1234 <no_reply@yahoogroups.com> wrote: From: greenymeany1234 <no_reply@yahoogroups.com> Subject: [DIYProjectionTV] Need help please read To: DIYProjectionTV@yahoogroups.com Date: Tuesday, April 22, 2008, 4:45 PM Hi I have been researching thease projectors for about 1year (roughly) now and am trying to build one but the problem I am haveing is getting the lense (which I can't order online) and also figuring out how to make it so i don't have to turn the tv upside down (its ok if i have to) But I am Trying to get the best quality of projector of this type CRT TV (not lcd) for the absoulute lowest price and would love it if someone had a lense I could have for free or for cheap (I would have to send cash tho)I am doing this for use in my bedroom which is in the basement and only has one window which I think I will cover up with Black out cloth And the reason I can't order online and have to send cash is I am 14 years old yes It's true but am really smart I program computers for fun and would like to give this a try. Thankyou please reply soon!

---

Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.

Hi I am doing this project for a science class in school and I need a
lense to make one of thease and Can't get one and could really use one
please any help would be great
thankyou

Hi I am doing this project for a science class in school and I need a
lense to make one of thease and Can't get one and could really use one
please any help would be great
thankyou

I was wondering if anyone had any lense i could have

Hi I have been researching thease projectors for about 1year (roughly)
now and am trying to build one but the problem I am haveing is getting
the lense (which I can't order online) and also figuring out how to
make it so i don't have to turn the tv upside down (its ok if i have
to) But I am Trying to get the best quality of projector of this type
CRT TV (not lcd) for the absoulute lowest price and would love it if
someone had a lense I could have for free or for cheap (I would have to
send cash tho)I am doing this for use in my bedroom which is in the
basement and only has one window which I think I will cover up with
Black out cloth And the reason I can't order online and have to send
cash is I am 14 years old yes It's true but am really smart I program
computers for fun and would like to give this a try. Thankyou please
reply soon!

---

To: DIYProjectionTV@yahoogroups.com
From: grynmoors@...
Date: Sun, 20 Jan 2008 19:20:09 +0000
Subject: [DIYProjectionTV] New Member Here...Greetings!

Hi

New member here just wanting to pop on and say HI and TY for this
wealth of information!!!

I've been playing around with the fresnel tv projector thing recently
experimenting with all kinds of stuff on my own but nothing is working
to my satisfaction. I figured there's probably a way to get this to
focus better so did a bit of Googling and found this egroup. TY for
being here.

Some of the designs and ideas are just wonderful! Can't wait to try
them out.

I don't have MS Word on my computer so I'm not able to read some of
the ".doc" files in the files sections. If someone can make those to
.pdf, that would be freaking awesome.

My main problem is focus and "glare". The light is like spilling over,
washing everything out, making it all fuzzy. I tried different things
to correct this. One of them being making a panel and putting it in
front of the lens with a smaller hole. This helped by giving me a much
more focused image, but the image was too dark to make it fun to watch.

I was contemplating getting a polarizing filter to see if that would help.

Part of my problem is using a cheap 330mm lens. I know I have to get
a better one.

I didn't know about the baffle, I'll give that a try.

Question 1) My research tells me that "the shorter the focal length,
the stronger the lens" is. Would a 200mm lens not be better than the
300-500mm lens that's been talked about here?

Question 2) Flipping the vertical/horizontal connections on the TV:
Will I be able to read words displayed on the screen after projection
(do words appear correctly on the screen)?

Thank you so much. I hope I have not asked questions that have already
been asked...I tried searching, but nothing came up.

Joyce

Welcome to the group!

I don't have your answers, however I do have a solution to your
problem with not being able to read DOC files. You should try
OpenOffice, it is "open source" software and its free!
http://www.openoffice.org/

it will open most MS Office files...

Good luck and have fun!

--- In DIYProjectionTV@yahoogroups.com, "Joyce" <grynmoors@...> wrote:
>
> Hi
>
> New member here just wanting to pop on and say HI and TY for this
> wealth of information!!!
>
> I've been playing around with the fresnel tv projector thing recently
> experimenting with all kinds of stuff on my own but nothing is working
> to my satisfaction. I figured there's probably a way to get this to
> focus better so did a bit of Googling and found this egroup. TY for
> being here.
>
> Some of the designs and ideas are just wonderful! Can't wait to try
> them out.
>
> I don't have MS Word on my computer so I'm not able to read some of
> the ".doc" files in the files sections.  If someone can make those to
> .pdf, that would be freaking awesome.
>
> My main problem is focus and "glare". The light is like spilling over,
> washing everything out, making it all fuzzy.  I tried different things
> to correct this. One of them being making a panel and putting it in
> front of the lens with a smaller hole. This helped by giving me a much
> more focused image, but the image was too dark to make it fun to watch.
>
> I was contemplating getting a polarizing filter to see if that would
help.
>
> Part of my problem is using a cheap 330mm lens.  I know I have to get
> a better one.
>
> I didn't know about the baffle, I'll give that a try.
>
> Question 1) My research tells me that "the shorter the focal length,
> the stronger the lens" is.  Would a 200mm lens not be better than the
> 300-500mm lens that's been talked about here?
>
> Question 2) Flipping the vertical/horizontal connections on the TV:
> Will I be able to read words displayed on the screen after projection
> (do words appear correctly on the screen)?
>
> Thank you so much. I hope I have not asked questions that have already
> been asked...I tried searching, but nothing came up.
>
> Joyce
>

Hi

New member here just wanting to pop on and say HI and TY for this
wealth of information!!!

I've been playing around with the fresnel tv projector thing recently
experimenting with all kinds of stuff on my own but nothing is working
to my satisfaction. I figured there's probably a way to get this to
focus better so did a bit of Googling and found this egroup. TY for
being here.

Some of the designs and ideas are just wonderful! Can't wait to try
them out.

I don't have MS Word on my computer so I'm not able to read some of
the ".doc" files in the files sections.  If someone can make those to
.pdf, that would be freaking awesome.

My main problem is focus and "glare". The light is like spilling over,
washing everything out, making it all fuzzy.  I tried different things
to correct this. One of them being making a panel and putting it in
front of the lens with a smaller hole. This helped by giving me a much
more focused image, but the image was too dark to make it fun to watch.

I was contemplating getting a polarizing filter to see if that would help.

Part of my problem is using a cheap 330mm lens.  I know I have to get
a better one.

I didn't know about the baffle, I'll give that a try.

Question 1) My research tells me that "the shorter the focal length,
the stronger the lens" is.  Would a 200mm lens not be better than the
300-500mm lens that's been talked about here?

Question 2) Flipping the vertical/horizontal connections on the TV:
Will I be able to read words displayed on the screen after projection
(do words appear correctly on the screen)?

Thank you so much. I hope I have not asked questions that have already
been asked...I tried searching, but nothing came up.

Joyce

Hi,

 

Nice to hear from you. I would like to know if you have ceramic metal Halide lamp?

I am looking for Osram Powerball HCI- E/P,This is a proteced lamp, with an

elliptical cover around the HCI-T version of Osram. This is a safe lamp for DIY projector

as it can be used in Open luminaire. Please respond ASAP, with cost if you have this stuff.

 

Details of this bulb is as follows:

Wattage : 150 Watt

Luminus Flux : 14,000 lumens

Colour temperature : 4200K,

Colour rendering index 1A

Product No. 4008321

907974 (this one has CLEAR(not coated) elliptical bulb )

 

I am attaching the details of this lamp as a PDF file. Please see the third page, were the

specific item I am looking for is highlighetd with red box.

 

Also do you keep? UV/IR filter? I am planning to import it from Optolife.com, but buying

single piece is turned out top be so costly because of shipping charges involved. It is better

if some one buys in bulk abnd sell it.

 

Best regards,

Ratnakumar P.K.

---

Save all your chat conversations. Find them online.

For sale on EBay, Item #140186132044
Starting Bid - $9.99
Buy it Now - $34.95
This auction begins Sunday 12/2/07 @ 5:00PM PST

Charles Beseler Company, East Orange, N.J. U.S.A. 18" E.F. Series III

This lens is from a Beseler Projector.

Condition - Great
Diameter - 5 and 1/4 inches
Length - 6 and 1/8 inches

I used this lens in a DIY Projector and it worked out great. It
produced great looking 100" diagonal pictures with my setup. I find no
need to keep it now that I have bought a larger television.

No International Shipping.

Please contact me with any questions.

DIYS LCD PROJECTOR! OR TV PROJECTOR !ASSEMBLE YOUR OWN LCD PROJECTOR IN
INDIA HOME MADE LCD PROJECTOR COMPONENTS IN INDIA is made available now
in INDIA. LENSES, LCDS,TUNER CARDS, METAL HALIDE LAMPS AND KNOW-HOW !!!
CONDENSER LENSES ,MINISCUS LENSES,THREE ELEMENT TRIPLET PROJECTION
LENSES AND FRESNEL LENSES Contact dhpmet@...,   mobile:
09994288723 You can call me free at: www.jaxtr.com/dhpmet

I have an Advent 14" flat screen CRT TV modified for DIY Projection
TV.  It already has the yoke swap and adjustments made.  You can see it
shown in my pictures area along with photos of the results.  I also
have the lense used in that setup if interested.

e-mail me if interested.  No international shipping.

For sale on EBay, Item #140186132044
Starting Bid - $9.99
Buy it Now - $34.95
This auction begins Sunday 12/2/07 @ 5:00PM PST

Charles Beseler Company, East Orange, N.J. U.S.A. 18" E.F. Series III

This lens is from a Beseler Projector.

Condition - Great
Diameter - 5 and 1/4 inches
Length - 6 and 1/8 inches

I used this lens in a DIY Projector and it worked out great. It
produced great looking 100" diagonal pictures with my setup. I find no
need to keep it now that I have bought a larger television.

No International Shipping.

Please contact me with any questions.

Hi,
   To fine tune your tv for crt projection it's a must to be able to
access your tv's service settings. Do you have access to them on
your tv? If you leave the make and model of your tv I can see if I
can help find them.

Apart from contrast,I think the RED and BLUE colour drivers can
darken a picture and maybe if you try moving them down a bit it
might help.

   I think I've finally settled on what I think is the optimal
settings on my tv and all movies are looking good now with a clear
picture and good colour.I increased the gain and luminosity on the
tv and set the RGB drivers at about 65% RED,60% GREEN,63% BLUE. At
first I though it would be best to have all RGB drivers at 100% but
the colour was not natural and too cartoony. After experimenting
with a lot of different settings I found the best picture. When
watching movies now I can really appreciate the high quality images.


It took a lot of adjustments to tv and screen and experimentation to
go from having a newbie diy crt projection to having a really
quality picture. It's a fun project and the results are really worth
it.



--- In DIYProjectionTV@yahoogroups.com, mark K4EEZ <K4EEZ@...> wrote:
>
>
> hi
> still have my mag box complete
> one thing i wish i knew how to do is turn up the contrest, the
dark seens are way too dark
> but duing out door daylight seens and ad breaks, it rox well,
matrex BSG and any space movie stargate, star treak, space 1999,
matrex etc etc with dark seens the picture contrest is just too dark
to make out anything
> the brightness is fing it just the contrest that needs Adj. anyone
know what i can do?
> tnx for any help !!
> De K4eeZ Group Owner Of The        .C.A.R.G.Clearwater Amateur
Radio Group Of Florida Web Link: Http://groups.yahoo.com/group/k4eez
7 3
>
>
> To: DIYProjectionTV@...: cinemaproject2007@...: Tue, 13 Nov 2007
22:49:42 +0000Subject: [DIYProjectionTV] Image Quality of Projections
>
>
>
>
> Hi,I've been using my diy crt projector for about 6 months now.I'm
using a 42cm fresnel lens,first image mirror and have a silver pvc
screen painted white.I find that watching some movies the quality of
image is perfect and it's just as good as in the movie theatre (eg
Matrix trilogy,Underworld,Terminator 1-3)whilst other movies and tv
shows the quality is pretty good and enjoyable to watch.Music clips
also look excellent.Dark scenes in films that are lit with
artificial light show up better than daytime scenes shot in natural
sunlight.I wonder if crt tv's reduce their light emission with
daytime scenes or if it's something to do with the exposure at the
filming source.Has anyone else noticed this with their projectors?
>
>
>
>
>
>
> _________________________________________________________________
> You keep typing, we keep giving. Download Messenger and join the
i'm Initiative now.
> http://im.live.com/messenger/im/home/?source=TAGLM
>

Hello,

Just to tell that I sell my big lens (diameter more than 16cm (6,4
inchs)) with bid on a-bay (title : enorme lentille).
If someone is interested...

Best regards,
PR

---

To: DIYProjectionTV@yahoogroups.com
From: cinemaproject2007@...
Date: Tue, 13 Nov 2007 22:49:42 +0000
Subject: [DIYProjectionTV] Image Quality of Projections

Hi,
I've been using my diy crt projector for about 6 months now.

I'm using a 42cm fresnel lens,first image mirror and have a silver
pvc screen painted white.

I find that watching some movies the quality of image is perfect and
it's just as good as in the movie theatre (eg Matrix
trilogy,Underworld,Terminator 1-3)whilst other movies and tv shows
the quality is pretty good and enjoyable to watch.

Music clips also look excellent.

Dark scenes in films that are lit with artificial light show up
better than daytime scenes shot in natural sunlight.

I wonder if crt tv's reduce their light emission with daytime scenes
or if it's something to do with the exposure at the filming source.

Has anyone else noticed this with their projectors?

Hello,

Just to tell that I sell my big lens (diameter more than 16cm (6,4
inchs)) with bid on a-bay (title : enorme lentille).
If someone is interested...

Best regards,
PR

Hi,
   I've been using my diy crt projector for about 6 months now.

I'm using a 42cm fresnel lens,first image mirror and have a silver
pvc screen painted white.

I find that watching some movies the quality of image is perfect and
it's just as good as in the movie theatre (eg Matrix
trilogy,Underworld,Terminator 1-3)whilst other movies and tv shows
the quality is pretty good and enjoyable to watch.

Music clips also look excellent.

Dark scenes in films that are lit with artificial light show up
better than daytime scenes shot in natural sunlight.

I wonder if crt tv's reduce their light emission with daytime scenes
or if it's something to do with the exposure at the filming source.

Has anyone else noticed this with their projectors?