Optical apparatus
AssigneeOlympus Corporation
InventorsNaoki Matsumura, Yukari Takahashi, Kei Matsuoka
Life of this patent
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Abstract
An optical apparatus includes a housing including an opening for letting a light flux pass through a first window member configured to let the light flux pass through, and to cover the opening, a second window member, overlapped with and fixed to the first window member, configured to let the light flux pass through, and a sealing member that is made of a stretchable material, and that is provided along an outer edge of the first window member or the second window member so as to form a sealed space portion between the first window member and the second window member.
Claims9
An optical apparatus comprising:
- a first optical member that allows a light flux to pass through;
- a transparent second optical member that allows the light flux, which has passed through the first optical member, to pass through;
- a sealing member that is configured by including a stretchable elastic member, the sealing member forming a sealed space portion between the first optical member and the second optical member;
- and
- a main body that houses the first optical member, the second optical member, and the sealing member,
- wherein,
- at least one of the first optical member and the second optical member is fixed to the main body, and
- the sealing member absorbs a volume change of the space portion by expansion or contraction of the sealing member, when a temperature change or a pressure change occurs.
Dependencies are inferred from the claim text.