Title:
LIGHT RECEIVER AND PORTABLE ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/143178
Kind Code:
A1
Abstract:
Provided is a light receiver that corrects ultraviolet measurement on the basis of visible light measurement and infrared measurement. A light receiver (1) is provided with a first light receiving element (PD1) and a second light receiving element (PD2), and a UV cut filter (11) having a low transmittance of light in the ultraviolet region. Light that passed through the UV cut filter (11) is inputted to the first light receiving element (PD1), and each of the first light receiving element (PD1) and the second light receiving element (PD2) can be switched to a photodiode (PD_uv) having sensitivity in the ultraviolet region, and a photodiode (PD_clear) having sensitivity in the visible light region and infrared region. On the basis of photo currents of the photodiodes (PD_ir+PD_vis) of the first light receiving element (PD1) and the second light receiving element (PD2), bias of the inputted light is calculated.
Inventors:
SATO HIDEKI
SHIMIZU TAKAYUKI
SHIMIZU TAKAYUKI
Application Number:
PCT/JP2015/077659
Publication Date:
September 15, 2016
Filing Date:
September 30, 2015
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
G01J1/02; G01J1/04; G01J1/42; G01J1/44; H01L31/10
Foreign References:
| JP2013140098A | 2013-07-18 | |||
| JP2013050422A | 2013-03-14 | |||
| JP2013197243A | 2013-09-30 | |||
| JP2012104656A | 2012-05-31 | |||
| US20120312990A1 | 2012-12-13 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation HARAKENZO WORLD PATENT & TRADEMARK (JP)
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