Infrared transmitting film and infrared-sensor cover using same
First Claim
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1. A film for transmitting infrared ray, comprising:
- a mirror-coat layer comprising a lamination of a first layer and a second layer, the first layer having a refractive index greater than that of the second layer; and
a color-material layer placed;
on the mirror-coat layer, the color-material layer comprising at least one color material and a binder, wherein the color-material layer absorbs visible light in a given wavelength range and transmits infrared ray, wherein the film has 80% or more transmission factor for infrared ray.
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Abstract
An infrared transmitting film includes a mirror-coat layer having a lamination of high-refractive-index material layers and low-refractive-index material layers, and a color-material layer placed on the mirror-coat layer and for absorbing visible light in a given wavelength range and transmitting infrared ray. The film has 80% or more transmission factor for infrared ray.
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Citations
19 Claims
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1. A film for transmitting infrared ray, comprising:
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a mirror-coat layer comprising a lamination of a first layer and a second layer, the first layer having a refractive index greater than that of the second layer; and
a color-material layer placed;
on the mirror-coat layer, the color-material layer comprising at least one color material and a binder, wherein the color-material layer absorbs visible light in a given wavelength range and transmits infrared ray,wherein the film has 80% or more transmission factor for infrared ray. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cover for an infrared sensor, comprising:
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a base material with transmission-ability for infrared ray; and
a film that transmits infrared ray, the film being disposed adjacent to the base material, the film comprising;
a mirror-coat layer comprising a lamination of a first layer and a second layer, the first layer having a refractive index greater than that of the second layer; and
a color-material layer placed on the mirror-coat layer, the color-material layer comprising at least one color material and a binder, wherein the color-material layer absorbs visible light in a given wavelength range and transmits infrared ray, wherein the film has 80% or more transmission factor for infrared ray, wherein the cover has 70% or more transmission factor for infrared ray. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. In an infrared-sensor unit:
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a cover, comprising;
a base material with transmission-ability for infrared ray; and
a film that transmits infrared ray, the film being disposed adjacent to the base material, the film comprising;
a mirror-coat layer comprising a lamination of a first layer and a second layer, the first layer having a refractive index greater than that of the second layer; and
a color-material layer placed on the mirror-coat layer, the color-material layer comprising at least one color material and a binder, wherein the color-material layer absorbs visible light in a given wavelength range and transmits infrared ray, wherein the film has 80% or more transmission factor for infrared ray, wherein the cover has 70% or more transmission factor for infrared ray.
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Specification