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Stepping diaphragm structure provided with dimmer conversion device

A technology of conversion device and light reduction film, which is applied in the direction of aperture, optics, camera, etc., can solve the problems of not being able to obtain a long enough shutter time, and cannot achieve shooting effects, etc., and achieve the effect of simple structure, convenient operation, and improved degree of precise control

Pending Publication Date: 2018-10-09
UNION OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, due to the intensity of external light, we cannot get a long enough shutter time to achieve the desired shooting effect

Method used

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  • Stepping diaphragm structure provided with dimmer conversion device
  • Stepping diaphragm structure provided with dimmer conversion device
  • Stepping diaphragm structure provided with dimmer conversion device

Examples

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0028] like Figure 1 to Figure 4 As shown, a step aperture structure with a light reduction film conversion device includes a base 1 and a cover plate 6 arranged on the base 1, the base 1 is provided with a base through hole 11, and the cover plate 6 is provided with There is a cover plate through hole 61 communicating with the base through hole 11, an aperture assembly 4 is provided between the base 1 and the cover plate 6, and a diaphragm assembly 4 is provided between the base 1 and the cover plate 6 to drive the operation of the aperture assembly 4. Then adjust the first drive assembly of the size of the aperture 5; the cover plate 6 is provided with a fixed seat 7, and the fixed seat 7 is provided with a fixed seat through hole 71 communicating with the cover plate throu...

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Abstract

The invention discloses a stepping diaphragm structure provided with a dimmer conversion device. The device includes a pedestal and a cover plate arranged on the pedestal. The pedestal is provided with a pedestal through hole. The cover plate is provided with a cover plate through hole. A diaphragm assembly is arranged between the pedestal and the cover plate. A first drive assembly is arranged between the pedestal and the cover plate. The cover plate is provided with a fixed base. The fixed base is provided with a fixed base through hole. A cavity is formed through connection of the fixed base and the cover plate. A second rotary plate is arranged in the cavity. The second rotary plate is provided with at least three windows. The windows are provided with dimmers. When the second rotary plate rotates, one of the dimmers aligns with the fixed base through hole and the pedestal through hole so as to allow light to pass. The fixed base is also provided with a second drive assembly. Whenthe first rotary plate rotates, blades are driven to act, so that the size of the diaphragm is controlled and product quality is improved. The second rotary plate is provided with at least three dimmers having different light transmission performance, the switching of the dimmers can be realized through driving the second rotary plate to rotate by the second drive device, so that operation convenience is achieved.

Description

【Technical field】 [0001] The invention relates to a lens device, in particular to a step aperture structure with a light reduction film conversion device. 【Background technique】 [0002] In the field of the aperture system of the surveillance lens, the step aperture has gradually replaced the electromagnetic aperture. The traditional solenoid valve-type aperture is composed of a driving coil and a damping coil, and the opening and closing degree of the aperture is controlled by a hall element. In the power-off state, the aperture is fully closed, and it needs to be powered on to maintain the aperture at a certain size. However, the stepping aperture is controlled by a stepping motor, and the size of the aperture is always maintained at the moment of power failure. The area of ​​the aperture can be controlled by the number of steps of the stepping motor, and its function is better than the aperture of the traditional structure. However, in all the current aperture systems,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B9/06
CPCG03B9/06
Inventor 周江威邱盛平刘辉吕祖文黄振锋梁海清欧阳诗婉陈学连
Owner UNION OPTECH
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