Casing of optical scanning apparatus and optical scanning apparatus
US10473922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2018 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Feb 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/1821
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A casing of an optical scanning apparatus housing a rotary polygon mirror and an optical member: a mounting portion on which a sound insulation member separating the optical member from the rotary polygon mirror is mountable; a first support portion supporting a transparent member which covers an opening of the casing on which the sound insulation member is mounted; a second support portion supporting a transparent member which covers the opening of the casing on which the sound insulation member is not mounted and is thicker than the transparent member to be supported by the first support portion; and a bearing surface of the second support portion located on an inner side of the casing than a bearing surface of the first support portion so that light beam emission surfaces of the transparent members to be supported by the first and second support portions are on a substantially same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.