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Light sensor and terminal equipment

A light sensor and terminal equipment technology, applied in the field of light sensors, can solve the problem that ambient light cannot be accurately detected

Inactive Publication Date: 2019-03-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a light sensor, which is used to solve the problem in the prior art that ambient light cannot be accurately detected due to light detection interference

Method used

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  • Light sensor and terminal equipment
  • Light sensor and terminal equipment

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Embodiment Construction

[0065] Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

[0066] In order to better describe the present application, some terms involved in the present application are firstly explained below.

[0067] Unpolarized light: The light wave is a transverse wave, that is, the vibration direction of the light wave vector is perpendicular to the direction of light propagation. Usually, the vibration of the light wave vector emitted by the light source is randomly oriented in the direction perpendicular to the propagation direction of the light, but statistically speaking, the distribution of the light wave vector can be regarded as having equal opportunities in all possible directions in space , their sum is symmetrical to the direction of light propagation, that is, the light vector has axisymmetric, uniform distribution, and the amplitude of vibration in each direction is the same, this is natur...

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Abstract

The invention provides a light sensor. The light sensor comprises at least one light sensor sub module, each light sensor sub module comprises first and second light detectors, first and second linearpolaroids and first and second phase delay diaphragms, the first light detector is used to obtain the light intensity of first mixed light which is formed by mixed light passing the first phase delaydiaphragm and first linear polaroid, the second light detector is used to obtain the light intensity of second mixed light which is formed by mixed light passing the second phase delay diaphragm andsecond linear polaroid, the mixed light includes first and second light, and after that the mixed light passes the second linear polaroid, the first light is filtered, so that a difference between thelight intensity of the first mixed light and the light intensity of the second mixed light equals the intensity of first light passing the first delay diaphragm and first linear polaroid. The invention also provides terminal equipment.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201710732235.3 and the title of the invention "optical sensor and terminal equipment" submitted to the China Patent Office on August 22, 2017, the entire contents of which are incorporated by reference in this application document. It is only for the sake of concise expression, and its entire content will not be repeated in the original text in this application document. technical field [0002] The present application relates to the field of optical sensors, in particular to an optical sensor and a terminal device. Background technique [0003] In order to realize the adaptive brightness adjustment of the screen according to the ambient light intensity, the current mobile phone or wearable device needs to be equipped with an ambient light sensor to realize light detection. With the demand for simplified structure and beautiful appearance, it is necessary to place the li...

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Application Information

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IPC IPC(8): G01J1/42G01J1/04H04M1/725
CPCG01J1/0429G01J1/00G01J1/0295H04M1/725G01J1/4204G01J1/4228G02B5/3083G09G3/3208G09G2300/02G09G2360/144G09G2320/0626G09G5/10G02B5/3033G02B27/28G01J1/10G01J2009/0265G01J1/0488
Inventor 王辉魏文雄瞿高鹏郭伟
Owner HUAWEI TECH CO LTD