Automatic focusing mechanism and macro focusing device

An automatic focusing and driving mechanism technology, which is applied in the field of focusing testing, can solve the problems of unable to achieve focusing, low efficiency, and manual adjustment can not meet the requirements, and achieve the effect of high production efficiency and convenient use

Active Publication Date: 2020-05-15
昆山丘钛生物识别科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But the whole adjustment is a purely manual process, the efficiency is low, and when the object distance is too small, the manual adjustment cannot meet the requirements, and the focus cannot be achieved

Method used

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  • Automatic focusing mechanism and macro focusing device
  • Automatic focusing mechanism and macro focusing device
  • Automatic focusing mechanism and macro focusing device

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] figure 1 It is a schematic structural diagram of an automatic focusing mechanism according to an embodiment of the present invention. figure 2 for figure 1 Schematic diagram of the front view structure. Such as figure 1 and figure 2 As shown, the automatic focus mechanism 10 includes a focus assembly 12 , a first slide 13 , a second mounting plate 14 , a second driving mechanism 15 , a second slide 16 , a third mounting plate 17 and a third driving mechanism 18 . The focusing assembly 12 is arranged on the first sliding table 13, the first sliding table 13 is movably connected with the second mounting plate 14, and the second driving mechanism 15 is arranged ...

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Abstract

An automatic focusing mechanism comprises focusing assembly, and is characterized in that the focusing assembly comprises a first mounting plate, a first driving mechanism, a rotary table, a focusingring and focusing glass; the first driving mechanism is arranged on the first mounting plate and located at one side of the rotary table, one part of the rotary table is rotatably arranged in the first mounting plate, the first driving mechanism is connected with the other part of the rotary table so as to drive the rotary table to rotate, the focusing ring is fixed in the rotary table, and the focusing glass is arranged in the focusing ring. According to the automatic focusing mechanism, automatic macro focusing can be achieved, and the production efficiency is high. The invention also relates to a macro focusing device.

Description

technical field [0001] The invention relates to the technical field of focusing testing, in particular to an automatic focusing mechanism and a macro focusing device. Background technique [0002] With consumers' demand for large screens, under-screen fingerprints emerged as the times require. At present, fingerprint products under the optical screen belong to macro focus. After the fingerprint module is assembled, a focusing process is required. The existing method for macro focusing is to manually adjust a value of the focusing lens (lens), obtain the chart image, and obtain the corresponding MTF value, and then Then manually adjust the focusing lens, and then obtain the chart image to obtain an MTF value, and so on until the best MTF value is found. But the whole adjustment is a purely manual process, and the efficiency is low, and when the object distance is too small, the manual adjustment cannot meet the requirements, and the focus cannot be realized. Contents of t...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 应允峰王建田家俊张军
Owner 昆山丘钛生物识别科技有限公司
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