Light waveguide and fluorescent sensor using the light waveguide
First Claim
1. A light waveguide comprised of a light transmitting material, said light waveguide comprising:
- a light introducing portion for introducing light coming from a light source;
a light radiating surface for radiating the light introduced through said light introducing portion;
a light transmitting surface which is opposed to said light radiating surface and through which at least a portion of external light incident from said light radiating surface is transmitted to the exterior;
an irregular reflection portion provided on said light transmitting surface to change the reflection angle of light on said light transmitting surface; and
a light separation portion provided on a surface in a region ranging from said light introducing portion to said light radiating surface and said light transmitting surface, said light separation portion having an absorption layer formed of a material having a refractive index lower than the refractive index of said light transmitting material and higher than the refractive index of a material in contact with said light transmitting surface.
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Accused Products
Abstract
A light waveguide includes: a light introducing portion for introducing light coming from a light source into a waveguide main body; a light radiating surface for radiating the light introduced through the light introducing portion to the hydrogel side; a light transmitting surface which is disposed opposite to and in parallel to the light radiating surface and through which external light incident from the light radiating surface is transmitted to the exterior; a light separation portion, which provided on a surface in a region ranging from the light introducing portion to the light radiating surface and the light transmitting surface, reflecting only totally reflected components of the light introduced through the light introducing portion; an irregular reflection portion provided on the light transmitting surface to change the reflection angle on the light transmitting surface of the light reflected by the light separation portion; and a mirror portion provided at a position opposite to the light introducing portion.
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Citations
16 Claims
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1. A light waveguide comprised of a light transmitting material, said light waveguide comprising:
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a light introducing portion for introducing light coming from a light source; a light radiating surface for radiating the light introduced through said light introducing portion; a light transmitting surface which is opposed to said light radiating surface and through which at least a portion of external light incident from said light radiating surface is transmitted to the exterior; an irregular reflection portion provided on said light transmitting surface to change the reflection angle of light on said light transmitting surface; and a light separation portion provided on a surface in a region ranging from said light introducing portion to said light radiating surface and said light transmitting surface, said light separation portion having an absorption layer formed of a material having a refractive index lower than the refractive index of said light transmitting material and higher than the refractive index of a material in contact with said light transmitting surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification