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Additional lens

A technology of additional lens and lens barrel, which is applied in the field of optical imaging, and can solve problems such as occasions where the additional lens cannot meet the temperature requirements

Active Publication Date: 2021-04-20
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the purpose of the present invention is to provide an additional lens to solve the technical problem that the additional lens in the prior art cannot be applied to occasions with temperature requirements

Method used

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Embodiment Construction

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0028] It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0029] Unless otherwise def...

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PUM

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Abstract

The invention provides an additional lens. The additional lens comprises a lens barrel and a lens assembly arranged in the lens barrel, a breathable layer is arranged on the inner wall of the lens barrel, a plurality of breathable holes are formed in the breathable layer, and the areas where all lenses in the lens assembly are located are communicated through the breathable holes. According to the invention, the breathable layer is arranged on the inner wall of the lens barrel, and the plurality of breathable holes are formed in the breathable layer, so that the areas where the lenses in the lens are located are communicated with each other through the breathable holes, and the phenomenon of local gas expansion in the lens barrel is avoided, so the lens is prevented from deviating from the original position due to the compression of the local expansion gas, and the additional lens can be suitable for occasions with temperature requirements.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an additional lens. Background technique [0002] With the popularity of lenses in all walks of life, the application scenarios are becoming more and more extensive, and the shooting needs are becoming more and more diverse. In order to meet the needs of performance and achieve a better shooting experience, an additional lens is added to the original shooting system to achieve better imaging effects and meet the needs of users. For example, a single-lens reflex camera is generally equipped with one or more add-on lenses to connect the add-on lens to the main lens of the single-lens reflex camera when needed. [0003] In the prior art, when the currently used add-on lens works under high temperature conditions, the gas inside the lens will expand, causing the lens inside the lens to be compressed and deviate from its original position. Therefore, the currently used add-on...

Claims

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Application Information

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IPC IPC(8): G03B17/02G03B17/12G02B7/02
Inventor 洪小白朱海海
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD