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Positive and negative helical focusing mechanism

An anti-screw, positive and negative technology, applied in the field of aerospace focusing, can solve the problems of poor structural stability and large structural voids, and achieve the effects of reducing shaking, increasing stability, and improving the uniformity of force

Inactive Publication Date: 2011-05-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above situation, in order to solve the defects of the prior art, the present invention provides a positive and negative spiral focusing mechanism, which can effectively solve the problems of large structural void and poor structural stability

Method used

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  • Positive and negative helical focusing mechanism
  • Positive and negative helical focusing mechanism
  • Positive and negative helical focusing mechanism

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Embodiment Construction

[0012] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] Depend on figure 1 , 2 As shown, the positive and negative spiral focusing mechanism is characterized in that it includes a mirror 1, a mirror back plate support structure, a bottom plate structure, a guide rod structure, a positive and negative screw screw structure, two connecting rods 8, and a stepping motor 6 and the multi-turn absolute encoder 7, the reflector 1 is installed on the support structure of the reflector back plate, the support structure of the reflector back plate is installed on the base plate structure, the positive and negative screw screw structure is installed on the lower part of the base plate structure, and one end of it is connected to the step The motor 6 is connected, the other end is connected with the multi-turn absolute encoder 7, and the middle part of the positive and negative screw scre...

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Abstract

The invention relates to the field of aerospace focusing, in particular to a positive and negative helical focusing mechanism. The positive and negative helical focusing mechanism comprises a reflective mirror, a reflective mirror rear panel supporting structure, a bottom board structure, a guide rod structure, a positive and negative helical lead screw structure, two connecting rods, a stepping motor and a multi-turn absolute encoder, wherein the reflective mirror is arranged on the reflective mirror rear panel supporting structure; the reflective mirror rear panel supporting structure is arranged on the bottom board structure; and the positive and negative helical lead screw structure is arranged below the bottom board structure, one end of the positive and negative helical lead screw structure is connected with the stepping motor and the other end of the positive and negative helical lead screw structure is connected with the multi-turn absolute encoder, and the middle part of the positive and negative helical lead screw structure is connected with the reflective mirror rear panel supporting structure through the connecting rods. The stress uniformity of the whole focusing mechanism is improved, the lost motion between lead screw nut mechanisms and the mirror surface shaking quantity of the reflective mirror are reduced, the stability of the movement of the focusing mechanism is increased, and the real-time and controllability of the focusing are improved.

Description

technical field [0001] The invention relates to the field of aerospace focusing, in particular to a positive and negative spiral focusing mechanism. Background technique [0002] At present, most of the focusing mechanisms of space optical remote sensors use a screw nut mechanism, which converts the circular motion of the screw into the linear motion of the mirror, thereby adjusting the length of the focal length and achieving the purpose of focusing. However, the structure of the screw nut mechanism has a large amount of backlash and poor stability of the mechanism. Therefore, it is imperative to study a new type of focusing mechanism for space optical remote sensors. Contents of the invention [0003] In view of the above situation, in order to solve the defects of the prior art, the present invention provides a positive and negative spiral focusing mechanism, which can effectively solve the problems of large structural void and poor structural stability. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/198
Inventor 柴方茂杨会生张学军张银鹤胡海飞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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