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US 2019/0293897 A1Published application
Centering mechanism, lens unit, projection system, and projector
AssigneeSeiko Epson Corporation
InventorHirofumi OKUBO
Life of this patent
Estimating the term…
Abstract
A centering pin pushes an inclining surface provided as part of a side section of a lens frame that accommodates a centering target lens that is a centering target lens group to allow the centering target lens to move in a centering direction. In this process, an end surface of the lens frame is always urged against a reference surface that positions the lens frame attached to an attachment section of a lens barrel in the optical axis direction.
Claims20
A centering mechanism comprising:
- a lens frame that has a side portion having an inclining surface and accommodates a centering target lens group;
- and
- a centering pin that comes into contact with the inclining surface of the lens frame, urges the lens frame against a reference surface, and is capable of moving the lens frame in a direction that intersects an optical axis of the lens.
Dependencies are inferred from the claim text.