Invention Grant
- Patent Title: Wavelength estimation device, light-source device, image display apparatus, object apparatus, wavelength estimation method, and light-source control method
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Application No.: US15454223Application Date: 2017-03-09
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Publication No.: US10209133B2Publication Date: 2019-02-19
- Inventor: Kohji Sakai , Kazuhiro Akatsu
- Applicant: Kohji Sakai , Kazuhiro Akatsu
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2016-064030 20160328; JP2016-174349 20160907
- Main IPC: G01N21/00
- IPC: G01N21/00 ; G01J3/50 ; G01J3/02 ; G01J3/10 ; H01S5/068 ; H04N9/31 ; G01J3/46 ; H01S5/00 ; H01S5/06 ; H01S5/0683 ; H01S5/40 ; H05B33/08
Abstract:
A wavelength estimation device including a light detector to receive light emitted from a light source and an estimation unit. The estimation unit estimates a wavelength of the light based on an amount of light received by the light detector.
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