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DLP3010EVM-LC: Optical Path , Offset , brightness

LP Kim
Intellectual 360 points
Part Number: DLP3010EVM-LC
Other Parts Discussed in Thread: DLPC-API

Dear Members 

I am checking the SW/HW/Optic fuction using DLP3010EVM-LC and DLPC-API  for machine vision 3d scanner. 

I need to simulate beam projection optical path to check interference between optical path and components such as housing. 

1) How to get the optical path information? .or information website link ? 

2) Share Vertical/Horizontal/Diagonal angle and additional information to draw 3D Optical path

3) What is ANSI Lumen or Lumen that was mentioned 125 Lum?

    It isn't same ANSI Lumen and Lumen. 

Thanks 

Best & Regards 

LP Kim

240307_Beam Optical Path.pptx

  • +1
    TI__Mastermind 23040 points

    Hello LP Kim,

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

    LP Kim said:
    1) How to get the optical path information? .or information website link ? 

    The DLP3010EVM-LC user guide has the optical engine specification on page 5 (table 1).

    DLP3010 Light Control EVM User’s Guide (Rev. B) (ti.com)

    The specification of the engine is

      Throw ratio - 1.2 

    Offset - 100%

    DMD mirror aspect ratio - 16:9  (Part of DMD specification)

    This three information are sufficient to calculate optical path information.

     The throw ratio 1.2 implies that from a distance of 1.2 meter, it creates 1-meter-wide image. This gives the horizontal angle. 

    The horizontal angle will be 2 * inverse of Tan (0.5 /1.2)

    Similarly, height of the image is 0.56 meter (16:9 aspect ratio).  The vertical angle will be:

    2 * inverse of Tan (0.28/1.2).

    100% offset implies that complete image is above optical axis of the lens.

    LP Kim said:
    Share Vertical/Horizontal/Diagonal angle and additional information to draw 3D Optical path

    Please refer to above.

    LP Kim said:

    What is ANSI Lumen or Lumen that was mentioned 125 Lum?

        It isn't same ANSI Lumen and Lumen. 

    ANSI refers to how lumens are measured. It is an average of nine points on the screen.

    regards,

    Vivek