Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
A light converging type filter comprising color filter or monochromatic filter bonded to imaging sensor, characterized in that at least two resin layers adjacent to each other on transparent substrate and having different refractive indices are furnished, and that the boundary surface of the resin layers is formed in such curved surface that incident light is converged to each of the light receiving units of imaging sensor.
Claim 2
Dependent Claim
65 words
A light converging type filter according to Claim 1, wherein a resin layer in convex form with relatively low refractive index is furnished on upper or lower portion of light shielding layer of color filter or monochromatic filter, and another resin layer having relatively high refractive index is furnished on the surface of the above resin layer formed in uneveness, and the surface is flattened.
Claim 3
Dependent Claim
80 words
A method for manufacturing the light converging filter according to Claim 1 or 2, wherein photosetting resin is coated on a transparent substrate before or after the formation of filter layer, only the resin at boundary of color element or at upper or lower portion of the light shielding layer is hardened by exposure and formed in convex form, the resin having higher refractive index than that of the photosetting resin is coated on it, and the surface is flattened.
Claim 4
Dependent Claim
41 words
A method for manufacturing the light converging filter according to Claim 3, wherein the inclination of the edge of convex portion formed by selective exposure and curing of photosetting resin is adjusted by heating to its softening point after light curing.
Claim 5
Dependent Claim
117 words
A method for manufacturing light converging filter according to Claim 1 or 2, wherein photosetting resin is coated on a transparent substrate before or after the formation of filter layer, only the resin on the boundary of color filter element or at upper or lower portion of light shielding layer is hardened by exposure and convex graded element is formed, the surface thereof is formed in convex form on the above convex graded element by selecting the coating condition in coating a resin having relatively low refractive index on it, and a resin having higher refractive index than that of the resin having relatively low refractive index is coated on it, and the surface thereof is flattened.
Claim 6
Dependent Claim
108 words
A method for manufacturing light converging filter according to Claim 1 or 2, wherein a light shielding layer is provided on transparent substrate, photosensitive resin is coated on it, convex graded element is formed by leaving only the resin on upper portion of light shielding layer through uniform irradiation of light from the direction of transparent substrate, the surface thereof is prepared in convex form on the above convex graded element by selecting the coating condition in coating the resin having relatively low refractive index on it, and the resin having higher refractive index than the above resin is coated on it, and the surface thereof is flattened.