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US 11,693,222 B2Granted
Reflective optical element and stereo camera device
AssigneeCanon Kabushiki Kaisha
InventorsYoshinori Sugiura, Katsumoto Hosokawa, Hiroyuki Kubo
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Abstract
Provided is a reflective optical element that is lightweight and excellent in damping capacity. In the reflective optical element, a resin layer having an optical surface is formed on a metal substrate, and a reflective film is formed on the optical surface, and also, the metal substrate includes an alloy containing Mg as a main component.
Claims30
A reflective optical element comprising:
- a metal substrate;
- a resin layer on the metal substrate, the resin layer having an optical surface;
- and
- a reflective film forming a mirror on the optical surface,
- wherein the metal substrate comprises an alloy containing Mg as a main component,
- wherein the resin layer comprises an olefin-based resin, and
- wherein the resin layer is arranged between the metal substrate and the reflective film so as to be in contact with the metal substrate and the reflective film.
4 more elements
A stereo camera device comprising:
- a base portion including a metal portion and a resin portion;
- a first imaging optical system;
- a second imaging optical system;
- and
- an image sensor,
- wherein the base portion is provided with a first opening for taking in light to the first imaging optical system, with the first imaging optical system comprising a first plurality of mirrors that are configured to reflect the light taken in from the first opening,
- wherein the base portion is provided with a second opening for taking in light to the second imaging optical system, with the second imaging optical system comprising a second plurality of mirrors that are configured to reflect the light taken in from the second opening,
- wherein the first plurality of mirrors and the second plurality of mirrors are formed by a reflective optical element, wherein the reflective optical element comprises (a) a metal substrate, (b) a resin layer on the metal substrate, the resin layer having an optical surface, and (c) a reflective film forming a mirror on the optical surface,
- wherein the metal substrate comprises an alloy containing Mg as a main component,
- wherein the resin layer comprises an olefin-based resin,
- wherein the metal portion includes the metal substrate, and
- wherein the resin portion includes the resin layer.
9 more elements
A reflective optical element comprising:
- a metal substrate;
- a resin layer on the metal portion, the resin layer having an optical surface;
- and
- a reflective film forming a mirror on the optical surface,
- wherein the metal substrate includes a Mg—Li alloy,
- wherein the resin layer comprises a thermoplastic resin, and
- wherein the resin layer is arranged between the metal substrate and the reflective film so as to be in contact with the metal substrate and the reflective film.
4 more elements
A stereo camera device comprising:
- a base portion including a metal portion and a resin portion;
- a first imaging optical system;
- a second imaging optical system;
- and
- an image sensor,
- wherein the base portion is provided with a first opening for taking in light to the first imaging optical system, with the first imaging optical system comprising a first plurality of mirrors that are configured to reflect the light taken in from the first opening,
- wherein the base portion is provided with a second opening for taking in light to the second imaging optical system, with the second imaging optical system comprising a second plurality of mirrors that are configured to reflect the light taken in from the second opening,
- wherein the first plurality of mirrors and the second plurality of mirrors are formed by a reflective optical element,
- wherein the reflective optical element comprises (a) a metal substrate, (b) a resin layer on the metal portion, the resin layer having an optical surface, and (c) a reflective film forming a mirror on the optical surface,
- wherein the metal substrate includes a Mg—Li alloy,
- wherein the metal portion includes the metal substrate, and
- wherein the resin portion includes the resin layer.
9 more elements
Dependencies are inferred from the claim text.