Optical filter and imaging apparatus
AssigneeHoya Corporation
InventorsHaruna IMAI, Shinichi OGAWA, Takeshi YAMAZAKI
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Abstract
An optical filter including a light absorbing glass substrate that absorbs light and that is composed of a phosphate-based glass or a fluorophosphate-based glass; a bonding layer that is provided on the absorbing glass substrate, that has a single layer structure, and that comprises a coupling agent composition including at least one dehydrated condensate of a silicon compound containing a Si atom; and a metal alkoxide containing a Ti atom, a Zr atom, an Al atom, or a combination thereof; and a resin layer disposed on the bonding layer.
Claims19
An optical filter, comprising an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass;
- a bonding layer with a single layer structure;
- and a resin layer,
- wherein the resin layer is provided on the absorbing glass substrate through the bonding layer,
- wherein the bonding layer comprises a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom.
An optical filter, comprising an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass;
- and a resin layer,
- wherein the resin layer comprises a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom, and is provided on the absorbing glass substrate.
Dependencies are inferred from the claim text.