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DLP6500FLQ: Is it possible to collect the light reflected by the mirror ('off' state) ?

user5986233
Prodigy 10 points
Part Number: DLP6500FLQ

  • I understand usually we collect the light reflected by the mirror ('on' state). Is it possible to collect the light reflected by the mirror ('off' state) using an integrating sphere? If the mirror state has been input, i.e. (1280*1024, some keeps on, some keeps off), we would like to collect the light reflected by 'off' angle. We are going to input  stable mirror state, without frequently change. I would really appreciate if you reply me.  

  • 0
    TI__Prodigy 675 points

    Hello.  Yes, both the on and off states are well-controlled as + 12 degrees and -12 degrees, respectively, with an allowable tolerance of +/- 1 degree.  Therefore, you are able to design your optical path with these guaranteed angles.

    In addition to these angles, it is important to also keep in mind other specified operating conditions such as temperature limits and illumination wavelengths to ensure longest life for your device.  If you have the opportunity during your application, it is also good to exercise the mirrors using a 50/50 duty cycle when they are not illuminated as well.  

  • 0 in reply to Raecine Meza
    TI__Intellectual 1885 points

    One item to note is the DLP6500BFLQ active array is surrounded by 14 rows of mirrors on all sides that are always in the "off" -12 deg. position. You will need to account for these mirrors in your optical design.

    See data sheet page 19

     www.ti.com/.../dlp6500flq