Stripe-color filter

Details Stripe-color filter Stripe-color filter

1980-08-20

1982-10-26

Henry, Jon W.

350316, G02B 522, G02B 528

Patent

active

043558666

ABSTRACT:
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 provided 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: n.sub.F >n.sub.T1 >n.sub.S and n.sub.F >n.sub.T2 >n.sub.D, wherein n.sub.S represents the refractive index of the substrate layer, n.sub.T1 the first coating layer, n.sub.F the semiconductor filter-element-layer, n.sub.D the covering layer, and n.sub.T2 the second coating layer. Thus, the first and second coating layers act as anti-reflection layers, so that the spectral transmissivity at the semiconductor layer region of the stripe-color filter is improved.

REFERENCES:
patent: 3356522 (1967-12-01), Libbert
patent: 4029394 (1977-06-01), Araki

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