DLP projectors being used
HP VP6121 DLP Projector
- Brief Description: Contrast: 2000:1, Brightness: 2000 ANSI (max) lumens, Light source: 250-watt UHP projector lamp, Display resolution: 1024 x 768 True XGA, Lens: F/2.6, f=23.2 to 28.38 mm with manual zoom and manual focus
- Vendor: HP
- Vendor P/N:
- Price: +/-50GBP on ebay
- Link to website: http://h10010.www1.hp.com/wwpc/us/en/sm/WF06b/382087-236094-236093-76244-f28-299646-406197-406198.html
- Link to technical specifications: http://h10032.www1.hp.com/ctg/Manual/bpia6019.pdf
- Link to Yahoo group discussion: http://tech.groups.yahoo.com/group/diy_3d_printing_and_fabrication/message/3392
- Notes: Checked if there were servicing videos on youtube for this model and found this vid explaining how to remove the color wheel http://www.youtube.com/watch?v=b2PRSm4n_Ok
DLP projectors hard to implement
- HP xp7030
Links of interest
General info on DLPs
Find an introductory article on DLP projectors at the Wikipedia
Texas Instruments DMD chip specs and recommended operation parameters
Very nice presentation on projector lamps & optics
The proof of concept in Junior Velosos Blog
In-depth info (PDF) on DLP technology from Texas Instruments
Univ. of Illinois DLP Instruction PDF document
Projector modification links
Bulb mods
Modding instructions of many models of DLP projectors at Allinbox
Automotive DLP bulb mod at Instructables
250W Worklight DLP bulb mod at Instructables
Forum: Meant to be seen
Forum: DIYAudio DIY Projector section
LED mods
Forum: DIYAudio LED mod
3 LED prism
UV mods
As per Texas Instruments DMD specs, working belo 400nm, right where the near UV range starts is detrimental to the DMD chips. The most damaging process results through outgassing of sealants in the micromirror array. This is the reason why DLP projectors have internal UV filters, generally included in the UHP lamp rack.
Advances in DMD-based UV application reliability below 320nm
Lifetime estimates and unique failure mechanisms of DMD
DMD having a window transparent to UV light
