DIY Multimedia LED Projector (video manual)

Step 12 The Projector Lens

 
I was really lucky, because the projector lens I'm using has some sort of metal support, and the height was almost exactly with the centre of the LCD. All I had to do was drill a couple of holes to fit it to the wood.

Comments

[torress1990]

hello, how i could calculate what lens do i need ? and maybe do you know from where i should get cheapy lens for trying projectro ? thanks

[An_War]

how large is your projected image?

and how to add s-video to car monitor?

please add your s-video soldering points.

[aekara]

composite to s-video instructable


http://www.instructables.com/id/S-Video-to-RCA-Connecter/

[aekara]

i don't have a projector lens so i tried to make one

here are some photos



will it work?

thanks

[newtonn2]

Hi there

I guess the only way to know that is giving it a try.

If you only have one magnifying glass inside, it may work but it will not focus evenly the projected screen.

[aekara]

I tried with a 3.5" lcd and it worked but the picture is realy small .Do you think that if I put and an other one magnifying glass will make the screen bigger?

[newtonn2]

I don't know. I never try with something like that.

[aekara]

OK Thank you. About the fan. Can i just connect the fan to the 12v regulator becouse my heatsink is small or i need to get one other 12 voltage regulator only for the fan Thank you Sorry for my bad english I am from Greece

[KcPower]

Where can I find a projector lens?

[newtonn2]

 That really depend on where you are.

[KcPower]

i live in Cyprus!

[newtonn2]

 Did you try ebay? The good supplier I know are based on USA. The postage for a good lens is worth more than the actual lens.

[KcPower]

Yes I've tried ebay the new ones are very expensive and the used ones are in a very bad condition!

[kimosabesun]

For those who speek Greek :)
File mou, vrika ayto to Gremaniko site, des sta DIY parts an exei kati pou se volevei (exei kai kit 7" me ta aparaitita optika)

For those who speak English :)
My friend, i found this German site, check the DIY parts for something that could fit your needs (it also has a 7" necessary optics kit)

http://www.exclusiv-online.com/shop/index.php?main=products&cat=HW

[aekara]

efxaristo

[philskii]

hey newton, im trying to follow this instructable but i have a few questions.. firstly. i need some help with getting the lens, Ive currently got a alpex telephoto, but im not 100% sure that will work as it gives me tiny images, secondly, how far does the image have to travel to be the right size for the lens. ( mine is 3.5" LCD)

[Ngdbud]

Two questions. Does it have to be a triplet lens or could a single lens work instead? And, Do you know how many X's magnification your lens is?

[eviltoaster]

Can you please help me find a cheap way to fix a projector lens. i bouth a 3.5" lcd from ebay today. and a few other stuff so i only have the light and projector lens left. Thanks for an awesome tutorial.

[jonathansinkimee]

hi newtonn2 ... can i use the side projector lens to put on this one..? my lcd is 3.5inch..

[newtonn2]

 
Hi there!
If by "side" projector lens you mean "slide" projector lens, the answer will be no. Sorry I tried b4 with a slide projector lens for this screen size and it didn't work.

[jonathansinkimee]

hi newtonn2.. sorry for my "side" projector lens lolz... so what kind of lens u are using and where can i find it.. can u help me out..  i`m living in singapore.. really thankz alots..