Filter device employing a holographic element

G - Physics – 02 – B

Patent

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88/121, 26/197

G02B 5/22 (2006.01) G02B 5/20 (2006.01) G02B 5/32 (2006.01)

Patent

CA 2002988

A filter device 10 and method of making the same is disclosed. The device comprises holographic means 12 for diffracting optical radiation of a first predetermined range of wavelengths, and optical radiation filter means 14 for filtering optical radiation of a second predetermined range of wavelengths. The optical radiation filter means is coupled with the holographic means.

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