Stripe-color filter

Details Stripe-color filter Stripe-color filter

G - Physics

02

B

88/121

G02B 5/20 (2006.01) H01J 29/89 (2006.01)

Patent

CA 1131956

TITLE OF THE INVENTION STRIPE-COLOR FILTER ABSTRACT OF THE DISCLOSURE A stripe-color filter for spatial color encoding in a color TV camera, having a striped semiconductor filter-element- layer supported between a transparent substrate layer and a transparent dielectric covering layer. There are further pro- vided a first coating layer of a transparent thin film between the substrate layer and the semiconductor filter-element-layer and a second coating layer of a transparent thin film between the semiconductor filter-element-layer and the covering layer. The refractive indexes of those layers are in the relationship: nF>nT1>nS and nF>nT2>nD, wherein nS represents the refractive index of the substrate layer, nT1 the first coating layer, nF the semiconductor filter-element-layer, nD the covering layer, and nT2 the second coating layer. Thus, the first and second coating layers act as anti-reflection layers, so that the spec- tral transmissivity at the semiconductor layer region of the stripe-color filter is improved.

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