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A focusing device and a focusing method

A focus adjustment and axis adjuster technology, which is applied in the optical field, can solve the problems such as the inability to adjust the focus of the fingerprint module, achieve good imaging effects, improve imaging effects, and increase the fingerprint recognition rate.

Active Publication Date: 2019-03-29
SHENZHEN ORBBEC CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to provide a focusing device to solve the technical problem that the existing optical under-screen fingerprint module cannot be focused during the manufacturing process

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  • A focusing device and a focusing method
  • A focusing device and a focusing method

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Embodiment Construction

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, and is only for conv...

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Abstract

The invention relates to the field of optical technology, and provides a focusing device and a focusing method. The focusing device comprises a calibration component, a relay lens component, a focusing component and an image processing component. A calibration assembly for generating light having a calibration pattern; The relay lens assembly is arranged between the calibration assembly and the optical fingerprint module, and the calibration assembly is arranged on the object plane of the relay lens assembly, and the image plane of the relay lens assembly coincides with the object plane of theoptical lens in the optical fingerprint module. The focusing assembly is connected with the optical lens for focusing the optical lens; The image processing module is connected with the optical fingerprint module for analyzing the image of the optical fingerprint module. With the addition of relay lens assembly, the distance between the calibration assembly and the optical lens is greatly increased, and the focusing assembly can precisely focus the position of the optical lens, so that the image can be clearly imaged on the image sensor, and the imaging effect of the optical fingerprint module is effectively improved.

Description

technical field [0001] The present invention relates to the field of optical technology, more specifically, to a focusing device and a focusing method. Background technique [0002] With the development of science and technology, full screen has become the development trend of mobile terminal display. The front of the mobile terminal is usually equipped with a fingerprint module. The existence of the fingerprint module greatly affects the screen ratio of the display screen, which is not conducive to the realization of a full screen. Therefore, the invisible fingerprint module has gradually occupied the market trend. At present, the fingerprint modules that can be installed under the display screen mainly include optical fingerprint modules and ultrasonic fingerprint modules, among which optical fingerprint modules are widely used because of their strong penetrating power. [0003] The fingerprint module under the optical screen uses the light emitted by the OLED (Organic Li...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G02B7/10
CPCG02B7/10G06V40/1324
Inventor 黄杰凡
Owner SHENZHEN ORBBEC CO LTD
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