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Refractive index of DMD 1080p cover glass

Boris Kling
Prodigy 15 points

For proper optical design I need refractive index of DMD 1080p cover glass (Corning 7056 Kovar sealing glass) in spectral range 375-410 nm.

I will be thankfull for any advice.

  • 0
    TI__Mastermind 48350 points

    Hello Boris,

    Welcome to the DLP section of the TI E2E community.  We are glad you found your way here.

    I know from the Corning 7056 Datasheet that they list the index of refraction at 589 nm as 1.487.  At this time that is all the data that I have.  I have put in a request for any other data that may be available from Corning in the band that you are planning to work.

  • 0 in reply to Fizix
    TI__Mastermind 48350 points

    Boris,

    The followind data was provided courtesy of Corning.  These numbers are calculated.

    The following 7056 data is precise to 0.00001:

    Material

    Corning7056

     

     

     

     

    Wavelength

    Refractive Index

    Extinction Coefficient

    300

    1.52

    0

    350

    1.51

    0

    375

    1.5

    0

    404.7

    1.49974

    0

    435.8

    1.4965

    0

    467.8

    1.49382

    0

    480

    1.49299

    0

    508.6

    1.49115

    0

    546.1

    1.48917

    0

    589.3

    1.48731

    0

    633

    1.48595

    0

    643.8

    1.48552

    0

    790

    1.4819

    0

    828

    1.48125

    0

    981

    1.47889

    0

    1317

    1.4746

    0

    1549

    1.47166

    0

    1600

    1.47107

    0

    1700

    1.471

    0

    I hope this is helpful

    Fizix