Optical device
AssigneeDaishinku Corporation
InventorsHideshi Saitoh, Eiichi Kameda
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Abstract
An optical device of the present invention comprises an image sensing device, a package for accommodating the image sensing device, the package including an opening of a square configuration as viewed in plan, and an optical low-pass filter having square-shaped major surfaces and fixed in the opening by means of a UV-curable adhesive. The optical low-pass filter comprises a 45-degree splitting birefringent plate which is machine-cut in such a manner as to split an incident beam in a direction of 45 degrees and to form a two-point split pattern. The optical low-pass filter is formed with a color compensation filter and/or an anti-reflection filter, and further provided with a UV transmission area (e.g. notches, angular grooves) for curing the UV-curable adhesive.
Claims22
An optical device which is characterized in comprising:
- an image sensing device;
- a package for accommodating the image sensing device, the package including an opening of a square configuration as viewed in plan;
- and an optical low-pass filter having square-shaped major surfaces and provided in the opening.
An optical device which is characterized in comprising:
- an image sensing device;
- a package for accommodating the image sensing device, the package including an opening of a square configuration as viewed in plan;
- a step formed along a periphery of the opening;
- and a light-transmissive cover which is fixed on the step by means of a UV-curable adhesive, and
- also characterized in that:
- a color compensation filter and/or an antireflection filter is formed on a top surface of the cover;
- and
- a UV transmission area is formed above the UV-curable adhesive by removing a part of the color compensation filter and/or the anti-reflection filter and a corresponding part of the cover adjacent to the color compensation filter and/or the anti-reflection filter.
Dependencies are inferred from the claim text.