Patent ID: 11921407
Assignee: SEIKO EPSON CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fixing device that fixes, to a light emitting device that emits light, a lens barrel included in a projection optical device and holding a plurality of lenses, the fixing device comprising:
a first tube member;
a contact section provided on an outer side of the first tube member and in contact with a holding section included in the light emitting device;
a pressing mechanism provided to be opposed to the contact section and configured to press the holding section toward the contact section when the fixing device is attached to the light emitting device; wherein the pressing mechanism includes:
a pressing section configured to come into contact with the holding section, the pressing section includes:
a pressing surface provided in a position opposed to the contact section and configured to press the holding section;
a guide surface adjacent to the pressing surface in a circumferential direction centering on a center axis of the first tube member and provided continuously to the pressing surface and configured to guide the holding section to the pressing surface; and
the guide surface is inclined with respect to the circumferential direction to further separate from the contact section as being further apart from the pressing surface; and

an urging section configured to urge the pressing section to a contact section side.