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DLP470TP: Illumination Optics Design for DMD Etendue

CherngWoei Heng
Prodigy 90 points
Part Number: DLP470TP


Hi, I'm an Optical Engineer working on the Illumination optics design for a client. I received a document about DMD Etendue for DLP470TP. (DMDEtendue) from my client. 

I need to get some confirmation base on the information provided from the Document (refer to attachment)

Q1. The illumination rays after passing through illumination optics. The rays should be in collimated (parallel) or converging with 17degree light cone) when hitting DMD surface? 

Q2. Understand that Illumination ray need to enter with 34degree of Flat state DMD. If 17 degree light cone required, the light enter direction still need to be 34degree, is that correct?

2313.DMDEtendue.pdf

  • 0
    TI__Expert 5485 points
    Hi

    Welcome to E2E and thank you for your interest in DLP technology.

    Our team will get back to you soon regarding your query.

    Regards
    Azad
  • 0 in reply to Azad
    TI__Mastermind 23090 points
    Hi Heng,
    Please find response to your questions:

    Q1. The illumination rays after passing through illumination optics. The rays should be in collimated (parallel) or converging with 17degree light cone) when hitting DMD surface?

    Ans: Converging with 17 degree or lower when hitting DMD surface.

    Q2. Understand that Illumination ray need to enter with 34 degree of Flat state DMD. If 17 degree light cone required, the light enter direction still need to be 34degree, is that correct?

    Ans: DLP470TP is bottom illuminated TRP DMD i.e incident ray from long side of DMD. The 34 degree illumination is recommend irrespective of light cone for proper separation of ON state, off state and flat state light cone .

    Please let us know if you any additional question.
    regards,
    Vivek