Image capturing apparatus and method for controlling temperature of a light transmitting element through controlling the optical element's exposure to and transmittance of light
US10784295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image capturing apparatus comprising: an optical element that changes a transmittance of light; an image sensor; an acquisition unit that acquires information regarding a temperature of the optical element; a first control unit that controls a transmittance of the optical element; and a second control unit that controls exposure when a subject is captured using the image sensor and an image signal is output. The first control unit performs control so as to increase a target transmittance of the optical element in a first condition under which a temperature of the optical element exceeds a predetermined temperature, based on the information regarding the temperature, and the second control unit controls exposure excluding the transmittance according to a change in the transmittance of the optical element in the first condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.