Focusing device of fixed-focus camera

A camera and fixed focus technology, which is applied in the field of camera focus adjustment, can solve the problems of high unit price of accessory products, high scrap rate of finished products, and low production efficiency, and achieve the effects of correcting assembly errors, ensuring imaging accuracy, and avoiding virtual focus

CN113655586APending Publication Date: 2021-11-16GUANGZHOU SOUTH SATELLITE NAVIGATION INSTR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-11-16

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Abstract

The invention discloses a focusing device of a fixed-focus camera. The focusing device comprises a lens bracket, a lens shield, a lens and a lens retainer, the lens support is provided with a first light-transmitting hole, the lens shield is suitable for being in threaded connection in the first light-transmitting hole, a limiting screw is arranged on the hole wall of the first light-transmitting hole, and the limiting screw is suitable for locking the lens shield; the lens shield is provided with a second light-transmitting hole, a flange is arranged on the hole wall of the second light-transmitting hole, an elastic piece is arranged on the side, away from the lens support, of the flange, and the bottom of the lens is suitable for abutting against the elastic piece; the lens retainer is provided with three adjusting pieces, and the included angle between every two adjacent adjusting pieces is larger than 60 degrees. The adjusting piece is connected with the flange along the optical axis direction of the lens so as to limit the lens between the lens retainer and the flange; the adjusting member can move along the optical axis direction of the lens. According to the focusing device of the fixed-focus camera, the perfect focusing effect can be achieved under the condition that the requirement for the machining precision of structural accessories is not high.
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Description

technical field

[0001] The invention relates to the technical field of camera focusing, in particular to a focusing device for a fixed-focus camera. Background technique

[0002] UAV aerial survey is a powerful supplement to traditional aerial photogrammetry. It has the characteristics of flexible, efficient and fast, precise and accurate, low operating cost, wide application range, short production cycle, etc.; and UAV aerial survey is difficult in small areas and difficult to fly The region has obvious advantages; with the development of UAV and digital camera technology, digital aerial photography technology based on UAV platform has shown its unique advantages. The combination of UAV and aerial photogrammetry makes UAV digital Low-altitude remote sensing has become a new development direction in the field of aerial remote sensing. UAV aerial photography can be widely used in disaster emergency and treatment of major national engineering construction, land supervision, re...

Examples

Embodiment Construction

[0033] 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. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also 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 ...