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Optical sensor and terminal device

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

Pending Publication Date: 2022-04-15
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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  • Optical sensor and terminal device
  • Optical sensor and terminal device
  • Optical sensor and terminal device

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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 an optical sensor which comprises at least one optical sensor sub-module, and each optical sensor sub-module comprises a first optical detector, a second optical detector, a first linear polarizer, a second linear polarizer, a first phase delay film and a second phase delay film. The first light detector is used for obtaining the light intensity of first mixed light after the mixed light passes through the first phase delay diaphragm and the first linear polarizer, and the second light detector is used for obtaining the light intensity of second mixed light after the mixed light passes through the second phase delay diaphragm and the second linear polarizer. The mixed light comprises first light and second light, and after the mixed light passes through the second linear polarizer, the first light is filtered, so that the difference value between the light intensity of the first mixed light and the light intensity of the second mixed light is the light intensity of the light after the first light passes through the first delay diaphragm and the first linear polarizer. The invention further 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/00G01J1/02G01J1/04H04M1/725
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