Year ago I impulsively bought a SHARP XR-10X-L projector after watching a post on Hackaday: http://hackaday.com/2013/03/28/epson-projector-led-mod/#more-96946 . I started to look into it a week ago. It has no lamp, so I will consider buying a replacement or making a LED conversion. I collected a lot of links, datasheets, video…
This will be 1st of 2 posts about projector conversion. I this I will write about what I need to buy and to make it. 2nd post will be assembly. Most important is to pick the right projector. I may have failed a it. Mine is a DLP projector. (3LCD vs. DLP). But I will still have a go with it.
Main inspiration for conversion are two videos from electrodacus: (comments of videos are very informative)
LIGHT SOURCE (lamp)
Original lamp is a High Intensity Discarge Bulb (Metal halide (high pressure mercury)) rated at 220W DC. Whole projector is rated at 298W. Model of lamp: AN-XR10L2. Replacements on eBay start at 120€ (160$). I decided to look into LED conversion, make a list of needed parts and if it comes in the range of 30-40$, will try it. Probably will buy lamp also. Operating cost for projector with lamp are about 120€/2000 h = 6 cent/h (lamp) and for 300W electricity 0.3 kW * 8 cent / kWh = 3 cent/h . Which means operating a projector is not that expensive with a standard lamp.
The expected amount of light to hit the screen is nowhere near the stocks 2000ANSI lumens. After LED conversion I expect it to be between 25 – 100 lumens as electrodacus states.
SERVICE MANUAL (Download)
I found a service manual that contains all the information you would want:
- operation manual
- removing of major parts
- the optical unit outline
- electrical adjustment
- troubleshooting table
- block diagram / overall wiring diagram
- printed wiring board (wiring = circuit)
- schematic diagram
and also parts guide.
CONCERNS (fans, reversible conversion)
Projector has 3 exhaust fans, that cool lamp and ballast power unit. They run at high RPM and make some noise. I will want to somehow lower the speed. Conversion should be reversible, if I decide to use a replacement metal halide lamp (I probably will).
OPTICAL UNIT OUTLINE
When replacing original lamp, my main goal will be to focus the captured LED light on a Color wheel. I say captured light, because LED is not very directional like we would want. It shines in a 130° angle. More in a datasheet (page 8 – typical spatial distribution ). Will try to collect it back as much as possible. Don’t yet know how. Did read a lot of pages about the topic. I found quite a lot of software that helps designing an optical system. Don’t really want to go in too much detail. Best Java applet http://webphysics.davidson.edu/applets/optics4/default.html .
PARTS for CONVERSION:
To meet my budget of 40$(30€) I minimized number of lenses I would buy. First I thought it would be good to buy more and experiment. Almost everything is redundant as I don’t know if I will fry something in the process of trial and error.
Parts will hopefully arrive at the end of February 2k14.
See 2nd post for progress: http://blog.luftek.si/2014/03/projector-sharp-led-lamp-part-2.html