CN102662203B - Diaphragm - Google Patents

Diaphragm Download PDF

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Publication number
CN102662203B
CN102662203B CN201210148356.0A CN201210148356A CN102662203B CN 102662203 B CN102662203 B CN 102662203B CN 201210148356 A CN201210148356 A CN 201210148356A CN 102662203 B CN102662203 B CN 102662203B
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CN
China
Prior art keywords
aperture
groove
base portion
diaphragm
forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201210148356.0A
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Chinese (zh)
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CN102662203A (en
Inventor
邱基斯
樊仲维
唐熊忻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing GK Laser Technology Co Ltd
Original Assignee
Beijing GK Laser Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing GK Laser Technology Co Ltd filed Critical Beijing GK Laser Technology Co Ltd
Priority to CN201210148356.0A priority Critical patent/CN102662203B/en
Publication of CN102662203A publication Critical patent/CN102662203A/en
Application granted granted Critical
Publication of CN102662203B publication Critical patent/CN102662203B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention provides a diaphragm comprising a base part, a diaphragm hole part and a fixing mechanism, wherein the base part is provided with a guiding device and a light transmitting part; the diaphragm hole part is provided with at least one diaphragm hole; the diaphragm hole part can move on the guide device back and forth in a certain direction, so that the diaphragm hole can move back and forth in the direction; and the shape and the position of the light transmitting part are arranged to meet the conditions that the diaphragm hole can be randomly moved to the position and the diaphragm hole is not shielded; and the fixing mechanism is used for fixing the diaphragm hole part on the base part when the diaphragm hole part is moved to the needed position relative to the base part.

Description

A kind of diaphragm
Technical field
The present invention relates to a kind of for the diaphragm in optical field, be specifically related to a kind of height and the variable diaphragm of clear aperture.
Background technology
Diaphragm is optical element conventional in a kind of optical field.Traditional diaphragm is generally disc, and as shown in Figure 1, disc diaphragm can rotate around center of circle O its structure, the hollow out circular hole that its circumference has a circle not of uniform size, i.e. aperture.The center height of this aperture relies on and rotates adjustment around center of circle O.For aperture A, as shown in Figure 2, when aperture A turns to right figure from left figure, the center height of aperture has become h, and horizontal range is relative to center of circle O simultaneously, also becomes L ' by L.Thus find out, the shortcoming of this diaphragm have following some:
1) vertical direction change (i.e. the dimension at center height place) has influence on the change of horizontal direction.Such as when regulating center height, coarse adjustment meets, and is fixed by diaphragm base, then fine tuning center is high, and center high becomes, and aperture position in the horizontal direction also changes simultaneously, again loose diaphragm base, regulates aperture position in the horizontal direction.This process wastes time and energy.
2) when changing the aperture of the diaphragm, center is high cannot reorientate accurately.Such as find that the aperture of 1mm is improper, need the hole changing another bore, because this diaphragm is not with a scale, need to remeasure.Like this, both inconvenient and benchmark may have change.
Summary of the invention
Therefore, the object of the invention is to the shortcoming overcoming above-mentioned existing diaphragm, a kind of diaphragm is provided, be convenient to fine adjustment center high, and clear aperture is variable.
The invention provides a kind of diaphragm, comprising:
Base portion, it has guide piece and transmittance section;
Aperture portion, it has at least one aperture, aperture portion can move back and forth in one direction along described guide piece, thus described aperture can be moved back and forth in said direction, the shape of described transmittance section and position are set to all can not block aperture when aperture moves in optional position;
Fixed mechanism, for when aperture portion moves to desired location relative to base portion, is fixed to aperture portion on base portion.
According to diaphragm provided by the invention, wherein said guide piece is groove or guide rail, wherein said groove has two relative sidewalls, the direction moved back and forth described in described sidewall edge extends, these two sidewalls contact with the both sides in aperture portion respectively, with the moving direction in snoot hole portion in the motion in aperture portion.
According to diaphragm provided by the invention, wherein when aperture portion comprises multiple aperture, multiple aperture arranges along the direction moved back and forth in described aperture portion.
According to diaphragm provided by the invention, wherein said transmittance section is the groove penetrating base portion.
According to diaphragm provided by the invention, wherein base portion also has the scale that the direction moved back and forth along described aperture portion is arranged.
According to diaphragm provided by the invention, wherein aperture portion also has the index line corresponding with each aperture, be used to indicate the position of aperture relative to base portion.
According to diaphragm provided by the invention, wherein said fixed mechanism comprises fixed block and screw, described aperture portion is sandwiched between described fixed block and described base portion, described aperture portion has the mounting groove moving back and forth direction extension described in edge, screw passes fixed block, described mounting groove and base portion, to be fixed on base portion in aperture portion.
According to diaphragm provided by the invention, wherein said fixed mechanism is the groove on base portion, and this groove is used as guide piece simultaneously, and the width of this groove is identical with the width in described aperture portion, and described aperture portion coordinates with the sidewall friction of described groove.
According to diaphragm provided by the invention, the sidewall of wherein said groove has flexible material.
Diaphragm provided by the invention can regulate the center of aperture high fast and accurately, the change of position in aperture horizontal direction can not be caused simultaneously, the aperture of different bore can be selected as required, and after reselecting aperture can the center of quick position aperture high.
Accompanying drawing explanation
Referring to accompanying drawing, embodiments of the present invention is further illustrated, wherein:
Fig. 1 is the structural representation of circular iris of the prior art;
Fig. 2 is the structural representation in use of the diaphragm shown in Fig. 1;
Fig. 3 is the structural representation of the diaphragm according to the embodiment of the present invention 1;
Fig. 4 a and 4b is respectively front elevation and the schematic cross-section of the base portion of the diaphragm in Fig. 3;
Fig. 5 is the structural representation in the aperture portion of diaphragm in Fig. 3;
Fig. 6 is the exploded isometric structural drawing of the diaphragm according to the embodiment of the present invention 2;
Fig. 7 is the schematic perspective view after the diaphragm in Fig. 6 is fixed.
Embodiment
Embodiment 1
The present embodiment provides a kind of diaphragm, and its structure as shown in Figure 3, comprising:
Base portion 01, its front elevation as shown in fig. 4 a, Fig. 4 b is the sectional view along A-A line in Fig. 4 a, it has groove 03, groove 03 vertically extends, and the boundary of groove 03 has scale 06(illustrates with heavy line in Fig. 3 and Fig. 4 a), the section bottom of groove 03, by hollow out, forms bar shaped transmittance section 07;
Aperture portion 02, its structure as shown in Figure 5, it has the aperture 04 of the different vertical arrangement being aligned in multiple aperture, aperture portion 02 is arranged in groove 03, can move up and down along groove 03, thus aperture 04 is moved up and down along transmittance section 07, therefore can not be blocked, the width in aperture portion 02 is roughly the same with the width of groove 03, aperture portion 02 coordinates with the sidewall friction of groove 03, be fixed on by friction force on base portion 01 when aperture portion moves to suitable position, aperture portion 02 has the index line 05 of horizontal direction in the side of each aperture 04, the extended line of this index line crosses the center of aperture 04, for identifying the height of aperture 04.
In use, can relative to base portion 01 aperture portion 02 of sliding, by the scale needed for index line is aimed at, thus make the aperture corresponding to this index line be positioned at required height, with this, aperture in required aperture adjusted to required height.
The diaphragm that the present embodiment provides is convenient to regulate the center of aperture high, and can not move the position on occurred level direction in adjustment process, time saving and energy saving, due on base portion with scale, therefore, it is possible to the center accurately adjusting aperture is high, therefore, when the aperture of aperture is improper, can facilitate, accurately change the suitable aperture in aperture.
Embodiment 2
The present embodiment provides a kind of diaphragm, and its detonation configuration as shown in Figure 6, comprising:
Base portion 11, it has groove 13, and groove 13 vertically extends, and the boundary of groove 13 has scale, and the section bottom of groove 13, by hollow out, forms bar shaped transmittance section 17, has threaded hole b in the non-openwork part of groove;
Aperture portion 12, it has aperture 14 and the bar shaped mounting groove 121 of the different vertical arrangement being aligned in multiple aperture, aperture portion 12 is arranged in groove 13, can move up and down along groove 13, thus aperture 14 is moved up and down along transmittance section 17;
Fixed block 18, it has threaded hole a, and screw 19 successively through threaded hole a, mounting groove 121 and threaded hole b, thus makes aperture portion be fixed on base portion by fixed block.
Diaphragm in the present embodiment also has index line similar to Example 1 and scale, not shown in figure 6 for clarity.
In use, unclamp screw 19, the aperture portion 12 of sliding relative to base portion 11, by by index line aim at needed for scale, thus make the aperture corresponding to this index line be positioned at required height, with this, aperture in required aperture is adjusted to required height, height control well after, tighten screw 19, aperture portion is fixed on base portion.The structure of the diaphragm after fixing as shown in Figure 7.
The diaphragm that the present embodiment provides is convenient to regulate the center of aperture high, and can not move the position on occurred level direction in adjustment process, time saving and energy saving, therefore when the aperture of aperture is improper, can facilitate, aperture that accurately replacing aperture is suitable.
According to other embodiments of the invention, wherein except above-mentioned friction force is fixing and screw is fixing, other fixed form fixed aperture hole portion and base portion also can be adopted.
According to other embodiments of the invention, wherein some guide piece also can serve as stationary installation, and such as, the groove as guide piece in embodiment 1 serves the effect of stationary installation simultaneously.
According to other embodiments of the invention, groove wherein in base portion can play the effect of guiding, but the groove in base portion is not necessary, other guide piece also can be adopted to carry out leading and aperture portion in the vertical direction being moved back and forth, such as guide rail etc.
According to other embodiments of the invention, the shape of the transmittance section wherein in base portion is not limited to bar shaped, blocks as long as base portion all can be made can not to cause aperture when aperture portion moves to optional position.
According to other embodiments of the invention, when frictional fit wherein in such as embodiment 1, can arrange on the sidewall of the groove of base portion can the material of increasing friction force, as the flexible material such as rubber, plastics.
In the above-described embodiments, the relative position conveniently between all parts and the description of relative movement, all suppose that aperture in the vertical direction moves back and forth.But in actual applications, aperture can be made to move back and forth in any direction, the relative position between wherein each parts remains unchanged, such as, can as required, aperture portion be moved back and forth in the horizontal direction, thus regulate aperture position in the horizontal direction.
In the present invention, by adopt base portion and and base portion between the structure in aperture portion that can move back and forth along a direction, overcome aperture change in location in one direction in existing circular iris and can cause the shortcoming of aperture change in location in the other directions.In addition, in the pinpoint application of needs, scale can be set on base portion, thus aperture is located accurately.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.

Claims (8)

1. a diaphragm, comprising:
Base portion, it has guide piece and transmittance section;
Aperture portion, it has the aperture that multiple aperture is different, aperture portion can move back and forth in one direction along described guide piece, described multiple aperture arranges along the direction moved back and forth in described aperture portion, thus described aperture can be moved back and forth in said direction, the shape of described transmittance section and position are set to all can not block aperture when aperture moves in optional position;
Fixed mechanism, for when aperture portion moves to desired location relative to base portion, is fixed to aperture portion on base portion.
2. diaphragm according to claim 1, wherein said guide piece is groove or guide rail, wherein said groove has two relative sidewalls, the direction moved back and forth described in described sidewall edge extends, these two sidewalls contact with the both sides in aperture portion respectively, with the moving direction in snoot hole portion in the motion in aperture portion.
3. diaphragm according to claim 1, wherein said transmittance section is the groove penetrating base portion.
4. diaphragm according to claim 1, wherein base portion also has the scale that the direction moved back and forth along described aperture portion is arranged.
5. diaphragm according to claim 1, wherein aperture portion also has the index line corresponding with each aperture, is used to indicate the position of aperture relative to base portion.
6. diaphragm according to claim 1, wherein said fixed mechanism comprises fixed block and screw, described aperture portion is sandwiched between described fixed block and described base portion, described aperture portion has the mounting groove moving back and forth direction extension described in edge, screw passes fixed block, described mounting groove and base portion, to be fixed on base portion in aperture portion.
7. diaphragm according to claim 1, wherein said fixed mechanism is the groove on base portion, and this groove is used as guide piece simultaneously, and the width of this groove is identical with the width in described aperture portion, and described aperture portion coordinates with the sidewall friction of described groove.
8. diaphragm according to claim 7, the sidewall of wherein said groove has flexible material.
CN201210148356.0A 2012-05-14 2012-05-14 Diaphragm Expired - Fee Related CN102662203B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210148356.0A CN102662203B (en) 2012-05-14 2012-05-14 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210148356.0A CN102662203B (en) 2012-05-14 2012-05-14 Diaphragm

Publications (2)

Publication Number Publication Date
CN102662203A CN102662203A (en) 2012-09-12
CN102662203B true CN102662203B (en) 2015-05-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104502066A (en) * 2014-12-22 2015-04-08 江苏中科四象激光科技有限公司 Measuring plate for laser optical path regulating small hole
CN108777760B (en) * 2018-07-25 2024-05-10 宁波舜宇光电信息有限公司 Iris diaphragm structure, camera module and electronic equipment
CN110646936A (en) * 2019-09-17 2020-01-03 中国科学院光电研究院 Adjustable diaphragm device suitable for different light beam conditions
CN111337911A (en) * 2020-04-10 2020-06-26 广东博智林机器人有限公司 Laser radar calibration device and laser radar calibration system

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NL8700496A (en) * 1987-02-27 1988-09-16 Stichting Tech Wetenschapp CONTINUOUSLY VARIABLE MICRO Diaphragm.
FR2692067A1 (en) * 1992-06-05 1993-12-10 Laser Int Sa Prodn. of components from photo-transformable materials - having a mechanical device to vary light spot area, for rapid prototyping of industrial components
JPH06230457A (en) * 1993-02-01 1994-08-19 Konica Corp Camera
JP2000010152A (en) * 1998-06-17 2000-01-14 Olympus Optical Co Ltd Diaphragm device
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