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DLP4710: Regarding requirements or suggestions for housings for DMDs

Part Number: DLP4710

Since we need to design custom optical engine for the DLP device we are working on we need a custom housing for the illumination engine, DMD and projection lens.

By disassembling and inspecting several DLP pcio projector engines they seem to have few things in common: 1) the housing is made of ABS plastic, 2) lenses and optics are a mix of acrylic and glass, attached to the housing with epoxy, 3) DMD is held in place with a metal back plate, a , what appears to be, electric insulator film between the DMD and the back plate, and an aluminum heatsink after the plate, all bolted to create a sandwich.

My question is related to 3.

Why is there a heatsink for the DMD? Through several hour long tests I couldn't measure a heat dissipation. Is the heatsink for cooling the DMD which heats by its own operation or is it too cool the DMD which may have heat leaked to it from other components of the projection engine such as LEDs?

What material is the electrical insulator between the back of the DMD and the metal plate? Are there any requirements for it?

Finally, kind of related, are the ribbon cables of the DMD (DLP4710 in this instance) manufactured by Texas instruments? Is it included with the DMD when purchased from TI or suppliers? Is one type of ribbon cable included and available? What else is included, if anything?

Thank you.