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US 2014/0233103 A1Published application
Optical module and electronic apparatus
AssigneeSeiko Epson Corporation
InventorKazunori SAKURAI
Life of this patent
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Abstract
An optical module (colorimetry sensor) includes an interference filter, and a transparent substrate to which a first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from a first thermal expansion coefficient. The interference filter is fixed to the transparent substrate through an adhesive layer made of gel-like resin, and the adhesive layer alleviates stress generated due to a difference in the thermal expansion coefficients between the interference filter and the transparent substrate.
Claims12
An optical module comprising:
- an interference filter including a first substrate having a first thermal expansion coefficient, a second substrate which faces the first substrate, a first reflection film which is formed on the first substrate, and a second reflection film which is formed on the second substrate and faces the first reflection film through a gap;
- and
- a fixing portion to which the first substrate of the interference filter is fixed, having a second thermal expansion coefficient which has a value different from the first thermal expansion coefficient,
- wherein the interference filter is fixed to the fixing portion by way of an adhesive layer that is located outside of a transmission region of the interference filter.
1 more element
Dependencies are inferred from the claim text.