Distance from DMD to f-mount

Laura Shagman

Prodigy 50 points

Hello,

I was wondering what the distance from the DMD to the f-mount is. Has anyone made this measurement?

Thank you.

over 12 years ago

0 Pascal DLP over 12 years ago

TI__Genius 9935 points

Laura,

46.50 mm is the lens flange back distance. This is the standard for Nikon F-mount.

0 Laura Shagman over 12 years ago in reply to Pascal DLP

Prodigy 50 points

I am actually inquiring about the details related to the optics which separate the Digital Micromirror Device from the F-mount without the Nikon lens being attached. Do you know these details?

0 Pascal DLP over 12 years ago in reply to Laura Shagman

TI__Genius 9935 points

Laura,

I'm not sure that I understand your question. There are no optics between the DMD and the lens - only the DMD window, which is a flat optical plate. The optical distance from the F-mount flange (where the base of the lens seats when attached) to the DMD mirror array is the standard F-mount distance, which is 46.5 mm (Nikon spec).

Are you talking about the off-axis illumination system, which is necessary to illuminate the DMD? That is a more complex question, because there is not a specific distance value associated with that. It is not an image-forming path - but an illumination path.

Best regards,

Pascal

0 Laura Shagman over 12 years ago in reply to Pascal DLP

Prodigy 50 points

Pascal,

Do you have a transmissivity/ reflectivity plot for the optical plate for 650 - 850 nm? If you can not provide that could you provide me with material of the optical plate?

Thank you.

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Distance from DMD to f-mount