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DLP660TE: Distribution of 'on'/'off' angles within a particular DMD part

Part Number: DLP660TE

I am considering a non-conventional (non-projector) use of a TI DMD part. Application would use a DLP660 (or other DMD part) in the focus plane of an imaging system. In one mode, all micro-mirrors will be in 'on' state and I'd like to re-image the reflected image off the DMD part onto a 2D image sensor. Essentially forming a typical image system for a short period of time.  To assess image quality in this application I need to know what the typical distribution of 'on'/'off' angles one can expect from a given DLP660 part. Part-to-part mean mirror 'on'/'off' angles are given in the DLP660 specification, but I need to get some metric on what the variability (e.g. angle distribution) of micro-mirror 'on'/'off' angles are within a particular DMD part. For example, 95% (2 x sigma) of all mirrors will be +/- 0.1 degrees around the mean mirror angle.

Any help would be greatly appreciated. 

  • Hello Robert,

    First, welcome to the DLP section of the TI-E2E forums.

    We do not provide any other specification than the one in the datasheet.  We have found that it causes to much confusion and tends to get used as de facto specification.  

    Regardless, I would recommend re-imaging the reflected beam on to your 2D image sensor.  Depending on your image # your re-image f # can encompass the variations that you are concerned about.

    Fizix