Variable image distance lens mechanism and irradiation-resistant camera

By adjusting the distance between the lens and the image sensor through a variable-distance lens mechanism, the problem of insufficient radiation resistance and vibration resistance of existing cameras in the nuclear industry is solved, achieving a balance between a large observation range and vibration resistance, making it suitable for video surveillance in the nuclear industry.

CN223967915UActive Publication Date: 2026-03-03ZHONGKE NUCLEAR TECHNOLOGY (HANGZHOU) CO LTD
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Patent Information

Application Number
CN202520335252.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2026-03-03
Estimated Expiration
2035-02-28

AI Technical Summary

Technical Problem

Existing cameras in the nuclear industry cannot simultaneously possess the characteristics of good radiation resistance, excellent vibration resistance, and a large observation range, which leads to the need to deploy radiation-resistant zoom cameras and radiation-resistant fixed-focus cameras separately in different monitoring areas.

Method used

By employing a variable image distance lens mechanism, the distance between the lens and the image sensor is changed. Combined with electrically controlled structures such as hydraulic cylinders and electric cylinders, linear movement of the lens assembly is achieved, adjusting the distance between the lens assembly and the image sensor, increasing the observation range, and improving vibration resistance.

Benefits of technology

This technology enables cameras to maintain their vibration resistance while increasing their observation range, thus meeting the monitoring needs of diverse working conditions in the nuclear industry.

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Abstract

The utility model relates to the technical field of camera shooting, in particular to a variable image distance lens and an irradiation-resistant camera, and the variable image distance lens mechanism comprises an outer ring; the lens group is movably arranged in the outer ring; and the adjusting assembly is used for driving the lens group to do linear motion so as to adjust the distance between the lens group and the image sensor. According to the camera, an existing prime lens is improved and can move, the distance between the lens piece and the light receiving COMS sensor is changed, namely, the image distance of the lens is changed, so that clear observation of objects at different distance levels is achieved, and then the camera can have the advantages of being resistant to vibration, large in observation range and the like at the same time.
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