Imaging lens for typoscope

An imaging lens and vision aid technology, applied in the field of auxiliary reading, can solve the problems of complex assembly process and high processing cost, and achieve the effects of simple assembly process, low processing difficulty and simple adjustment method.

Active Publication Date: 2016-06-22
THE EYE HOSPITAL OF WENZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the imaging lens of the vision aid is used as the input module of the optical signal, which has a great impact on the final imaging quality. If only the traditional camera lens is used instead, not only the processing cost is high, but also the assembly process is complicated

Method used

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  • Imaging lens for typoscope
  • Imaging lens for typoscope
  • Imaging lens for typoscope

Examples

Experimental program
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Embodiment Construction

[0027] In the vision aid imaging lens in the present invention, wherein the zoom lens barrel and the upper part of the lens barrel refer to the side facing the subject, and the zoom lens barrel and the upper opening of the lens barrel refer to the opening facing the subject; the zoom lens barrel and the lens barrel The bottom refers to the side away from the subject, and the bottom opening of the zoom lens barrel and lens barrel refers to the opening on the side away from the subject.

[0028] Zoom principle: it is realized by adjusting the relative positions of the first zoom lens group and the second zoom lens group.

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 and 2 As shown, the vision aid imaging lens of the present invention comprises a zoom lens barrel 1, a lens barrel 2, a zoom ring 3, a compression ring 4, a first zoom lens group 5, a second zoom lens group 6, an annular mount...

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Abstract

Disclosed in the invention is an imaging lens for a typoscope. The imaging lens is composed of a zoom lens cone, a lens cone, a zoom ring, a hold-down ring, a first zoom lens group and a second zoom lens group. The lens cone sleeves the outside of the zoom lens cone; the zoom ring sleeves the outside of the lens cone; the first zoom lens group is arranged inside the zoom lens cone; and the second zoom lens group is arranged at the bottom opening of the lens cone. A pin rod is arranged on the zoom lens cone; a guide slot is formed in the lens cone wall at the axial direction; a trapezoid thread is arranged at the inner wall of the zoom ring; and one end of the pin rod passes through the guide slot and extends into a threaded tooth groove of the trapezoid thread. The provided imaging lens has advantages of simple adjusting way, stable movement, low processing difficulty, simple assembly process, and high precision.

Description

technical field [0001] The invention relates to the field of reading aids, in particular to an imaging lens for a vision aid. Background technique [0002] Vision aids are auxiliary tools that help visually impaired people (including visually impaired people and the elderly) to read. At present, the technology adopted by the vision aid is based on a special image processor, which collects the image data captured by the digital lens module, applies digital image processing technology to process the image data, and then displays the processed image on the LCD screen in real time for users to read . [0003] Among them, the imaging lens of the vision aid is used as the input module of the optical signal, which has a great impact on the final imaging quality. If only the traditional camera lens is used instead, not only the processing cost is high, but also the assembly process is complicated. Contents of the invention [0004] The technical problem to be solved by the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/02G02B7/04
CPCG02B7/04G02B27/021
Inventor 苏增识
Owner THE EYE HOSPITAL OF WENZHOU MEDICAL UNIV
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