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Camera module

A technology of camera module and optical signal, which is applied in the direction of TV, TV system components, electrical components, etc. It can solve the problems such as difficult to ensure the safety of objects, and achieve the effect of increasing the measurable distance, reducing power consumption, and ensuring safety

Pending Publication Date: 2021-12-24
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when a certain amount of light is irradiated on a very close object (such as skin or eyes) for a predetermined time, there is a problem that it is difficult to ensure the safety of the object

Method used

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Embodiment Construction

[0050] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0051] However, the technical spirit of the present invention is not limited to some exemplary embodiments to be described, and can be implemented in various forms. One or more elements may be selectively combined or replaced among the embodiments without departing from the technical spirit of the present invention.

[0052] In addition, unless otherwise defined, terms (including technical terms and scientific terms) used herein can be interpreted with the meanings commonly understood by those of ordinary skill in the art. Commonly used terms such as terms defined in dictionaries can be understood in consideration of their background meanings in related arts.

[0053] Also, the terms used herein are not intended to limit the present invention, but are used to describe exemplary embodiments.

[0054] In the specification, a singular for...

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Abstract

Disclosed in the present invention is a camera module comprising: an optical output unit for outputting a first optical signal and a second optical signal to an object; a sensor for receiving a first reflected optical signal in which the first optical signal is reflected by the object; and a control unit for obtaining first distance information to the object by using the first optical signal and the first reflected optical signal, wherein an output of the first optical signal is smaller than an output of the second optical signal, and the control unit determines whether to output the second optical signal by using the first distance information.

Description

technical field [0001] The invention relates to a camera module for extracting distance information. Background technique [0002] Three-dimensional content is applied in many fields, for example, education, manufacturing, autonomous driving field, and game and cultural fields, and obtaining three-dimensional content requires distance information (depth map). The distance information is information representing a spatial distance, and refers to viewing angle information of one point relative to another point in a two-dimensional image. [0003] As a method of acquiring distance information, a method of projecting infrared (IR) structured light onto a subject, a method of using a stereo camera, a time-of-flight (TOF) method, and the like are being used. According to the TOF method, the distance to an object is calculated using information about emitted and reflected light. The biggest advantage of the ToF method is that it can quickly provide distance information about the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/254H04N13/239
CPCH04N13/239H04N13/254H04N23/60H04N23/671H04N23/66
Inventor 朴贵莲李庸仙
Owner LG INNOTEK CO LTD
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