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Blade opening and closing device

A technology of opening and closing devices and blades, applied in the field of optics, can solve the problems of complex structure, high cost, unfavorable market competition, etc., and achieve the effect of low cost, simple and practical structure, and favorable market competition

Inactive Publication Date: 2013-03-13
UNION OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the existing blade opening and closing device of the optical lens, the structure is generally complicated and the cost is high, which is not conducive to market competition

Method used

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  • Blade opening and closing device
  • Blade opening and closing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0019] As shown in the figure, a blade opening and closing device includes a lens group frame 1, and a CAM barrel 2 is arranged inside the lens group frame 1, and the CAM barrel 2 is a cam barrel. The inner surface of the lens group frame 1 is provided with a guide post 11, and the outer surface of the CAM cylinder 2 is provided with a CAM groove 21. The guide post 11 is placed in the CAM groove 21 and drives the CAM cylinder 2 to rotate, so that the lens group frame 1 also drives the CAM when rotating. The drum 2 rotates and moves forward and backward.

[0020] A driving ring 3 is arranged in the lens group frame 1, a driving pin 31 is arranged on the driving ring 3, a gap 22 is arranged on the CAM tube 2, and the driving pin 31 is placed in the gap 22, so that the CAM tube 2 rotates simultaneously It drives the drive ring 3 to rotate. Two vane columns 12 are...

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Abstract

The invention relates to a blade opening and closing device which comprises a lens group frame. A CAM barrel is arranged in the lens group frame, the inner surface of the lens group frame is provided with a guide pillar, the outer surface of the CAM barrel is provided with a CAM groove, the guide pillar is arranged in the CAM groove and drives the CAM barrel to rotate, a driving ring is arranged in the lens group frame, a driving foot is arranged on the driving ring, the CAM barrel is provided with a notch, and the driving foot is arranged in the notch. Two blade columns are arranged on the lens group frame, blades are sleeved on the two blade columns correspondingly and provided with hooks, two blade hooks and one returning hook are arranged on the driving ring, the two blade hooks are correspondingly connected with the hooks of the two blades through two blade tension springs and drive the blades to rotate, and the returning hook is connected with the lens group frame through a returning tension spring. The blade opening and closing device aims at overcoming the shortcomings in the prior art, is simple in structure, durable and low in cost, and enables the blades to be stably opened and closed.

Description

【Technical field】 [0001] The invention relates to the optical industry, in particular to a digital camera, the application of a camera lens system, and in particular to a device for realizing the smooth opening and closing of blades. 【Background technique】 [0002] Because the blade opening and closing device of the existing optical lens generally has a complex structure and high cost, it is not conducive to market competition. 【Content of invention】 [0003] The object of the present invention is to provide a device for realizing the stable opening and closing of blades with simple structure, durability and low cost. [0004] For above-mentioned purpose, the present invention adopts following technical scheme: [0005] A blade opening and closing device is characterized in that it includes a lens group frame 1, a CAM cylinder 2 is arranged inside the lens group frame 1, a guide post 11 is provided on the inner surface of the lens group frame 1, and a CAM groove is provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B9/10G02B7/02
Inventor 李炯妃宋运林李中杰邱盛平
Owner UNION OPTECH
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