CN104749767A - High-precision electric control diaphragm device - Google Patents
High-precision electric control diaphragm device Download PDFInfo
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- CN104749767A CN104749767A CN201510112105.0A CN201510112105A CN104749767A CN 104749767 A CN104749767 A CN 104749767A CN 201510112105 A CN201510112105 A CN 201510112105A CN 104749767 A CN104749767 A CN 104749767A
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- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 230000005693 optoelectronics Effects 0.000 claims description 27
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- 230000033001 locomotion Effects 0.000 claims description 12
- 238000013178 mathematical model Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 19
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000019892 Stellar Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- Diaphragms For Cameras (AREA)
- Microscoopes, Condenser (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The high-precision electric control diaphragm device comprises a double-arc diaphragm, a driving mechanism, a transmission mechanism, a limit switch, a controller and a base with a circular light through opening at the bottom; the driving mechanism is arranged on the base and connected with the controller; the transmission mechanism comprises a guide rail sliding block pair arranged on the base and lead screws which are arranged on two sides of the circular light through opening in parallel with the guide rail sliding block pair; the screw rod is arranged along the power output direction of the driving mechanism, one end of the screw rod is connected with the driving mechanism, and the other end of the screw rod is fixed on the side part of the base; the double-arc diaphragm is arranged on the guide rail sliding block pair and the lead screw; the double-arc diaphragm is sheet-shaped, the contour line of the double-arc diaphragm comprises a first arc edge and a second arc edge, and the first arc edge and the second arc edge surround a horn-shaped opening and have a common endpoint; the arc radiuses of the first arc edge and the second arc edge are matched with the light transmission caliber of the circular light transmission port; the limit switches are fixed at two ends of the guide rail sliding block pair and connected with the controller, and the height of the limit switches is higher than that of the guide rail sliding block pair. The invention has no problem of minimum diaphragm aperture and can realize linear adjustment of light intensity.
Description
Technical field
The invention belongs to optics regulation technology field, relate to a kind of adjustable diaphragm device, particularly relate to a kind of without minimum diaphragm aperture problem and the high precision electric control aperture device that can realize light intensity Serial regulation.
Background technology
Star sensor is a kind of attitude sensor with degree of precision, with the fixed star of diverse location on celestial sphere for the detection of a target is to determine the operation attitude of aerospacecraft.Star simulator is the analog machine of the index such as magnitude, spectrum, angular separation to fixed star starlight, and complete the Performance Detection to star sensor and demarcation, it forms primarily of parallel light tube, star tester, bandpass filter and light source.In actual test process, bandpass filter and star tester are positioned over the focal plane of parallel light tube, after light source irradiation, simulate infinite distance star chart.
Current domestic employing adjusts the colour temperature of simulation star chart by the quantity increasing bandpass filter and light source, by the brightness (i.e. magnitude) regulating the power of light source to adjust simulation star chart.In actual test process, the power of adjustment light source can change the spectrum of light source, and then causes the colour temperature simulating star chart to change, inconsistent with celestial body stellar spectrum, thus introduces test error.Present stage, studies in China personnel place adjustable diaphragm before bandpass filter, replace adjustment light source power to change the brightness of simulation star chart by adjustment diaphragm bore, and then the error that the change of elimination light source light spectrum is introduced.
Existing iris mechanism is divided into hand and electric-controlled type.The precision of hand iris is low, poor repeatability, can not control the speed of adjustable diaphragm.Driving mechanism many employings drive motor of electric-controlled type iris, turbine and worm structure, exist that transmission accuracy is low, friction force is large and the problem such as serviceable life is short.
And, existing iris mechanism all adopts rounded constrictions diaphragm to adjust the clear field of optical system, thus inevitably there is the problem that cannot close completely, and diaphragm sheet number is more, the minimum aperture of the diaphragm is larger, and the current minimum aperture of the diaphragm can only accomplish Φ 1mm.In addition, existing light source commercially, generally adopt bowl lamp socket, its light distribution is similar to Gaussian distribution, and existing iris mechanism cannot meet the requirement of intensity of light source linear change.
Summary of the invention
In order to solve exist in background technology cannot carry out the Serial regulation of light intensity to Gaussian beam, rounded constrictions diaphragm cannot close the technical matters that thus there is the minimum aperture of the diaphragm completely, the invention provides a kind of without minimum diaphragm aperture problem and the high precision electric control aperture device that can realize light intensity Serial regulation.
Technical solution of the present invention is:
The invention provides a kind of high precision electric control aperture device, its special character is: comprise the pedestal that two arc diaphragm, driving mechanism, gear train, limit switch, controller and bottom offer circular logical light mouth; Described driving mechanism to be arranged on pedestal and to be connected with controller; Described gear train comprises secondary and secondary with the guide rail slide block leading screw being set in parallel in circular logical Guang Kou both sides of the guide rail slide block be arranged on pedestal; Leading screw is arranged along the Power output direction of driving mechanism, and leading screw one end is connected with driving mechanism, and the other end is fixed on the sidepiece of pedestal; Described pair of arc diaphragm is arranged on guide rail slide block pair and leading screw; Two arc diaphragm is schistose texture, and its outline line comprises the first arc limit and the second arc limit, and the first arc limit and the second arc limit surround flare openings and have a common end; The clear aperture that the arc radius on described first arc limit and the second arc limit and circle lead to light mouth matches; Described driving mechanism drives two arc diaphragm to make flare openings lead to light mouth relative to circle by guide rail slide block pair and leading screw and does parallel tangential motion; Described limit switch is fixed on the two ends of guide rail slide block pair and is connected with controller, and the height of limit switch is higher than the height of guide rail slide block pair.
The outline line of above-mentioned pair of arc diaphragm also comprises the first straight flange, the second straight flange and the 3rd straight flange; The common end on described first arc limit and the second arc limit is positioned on the perpendicular bisector of the 3rd straight flange; Described flare openings is the 3rd straight flange dorsad; The other end on described first arc limit is connected by the first straight flange with the 3rd straight flange; The other end on described second arc limit is connected by the second straight flange with the 3rd straight flange.
Above-mentioned first straight flange is parallel with the second straight flange; With the common end on the first arc limit and the second arc limit for initial point, to cross initial point and perpendicular to the straight line of the 3rd straight flange for X-axis, to cross initial point and perpendicular to the straight line of X-axis for Y-axis, set up rectangular coordinate system, the direction of close flare openings is X-axis positive dirction, the direction of close first straight flange is Y-axis positive dirction, then the mathematical model of described pair of arc diaphragm is:
Wherein, R is the arc radius on the first arc limit and the second arc limit,
for any point on arc and the line of initial point and the angle of X-axis positive dirction, x, y are respectively the coordinate of any point on the first arc limit or the second arc limit.
Above-mentioned driving mechanism is stepper motor; Described limit switch comprises the first optoelectronic switch and the second optoelectronic switch that are individually fixed in the secondary two ends of guide rail slide block; Described first optoelectronic switch and the second optoelectronic switch are connected with controller respectively.
Above-mentioned guide rail slide block pair is comprised guide rail and is arranged at the slide block that pedestal also freely can slide on guide rail by guide rail; Described guide rail and leading screw are set in parallel in the both sides of circular logical light mouth; Described pair of arc diaphragm is arranged on slide block and leading screw; Described stepper motor drives two arc diaphragm to make flare openings lead to light mouth relative to circle by leading screw and slide block and does parallel tangential motion; Described first optoelectronic switch and the second optoelectronic switch are individually fixed in the two ends of guide rail, and the height of the first optoelectronic switch and the second optoelectronic switch is all higher than the height of slide block.
Above-mentioned guide rail is the walking depth of parallelism is the support type precision linear bearing guide of 3.5 μm.
Above-mentioned leading screw comprises screw rod and is set in also can along the reciprocating feed screw nut of screw rod on screw rod; Described screw rod is arranged along the Power output direction of stepper motor, and screw rod one end is connected with stepper motor, and the other end is fixed on the sidepiece of pedestal by support member; Described pair of arc diaphragm is fixed on feed screw nut and slide block.
Above-mentioned leading screw and stepper motor are integral structures.
Above-mentioned support member comprises bearing seat and bearing; Described screw rod is fixed on the sidepiece of pedestal successively by bearing and bearing seat.
The invention provides a kind of high precision electric control aperture device, it has following several respects advantage:
1, be parallel to by the flare openings of two arc diaphragm circular logical light mouth to realize clear field change do tangential motion, thus two arc diaphragm can be closed completely, efficiently solves the minimum diaphragm aperture problem that rounded constrictions diaphragm exists; Adopt two arc diaphragm can realize carrying out Serial regulation to the light intensity in Gaussian distribution, the tripping problems of the luminous energy rate of change existed when solving the adjustment of rounded constrictions diaphragm.
2, by the cooperation of stepper motor, leading screw, guide rail and optoelectronic switch, effectively can ensure the linear movement of two arc diaphragm, positioning precision and stationarity, thus ensure that whole automatically controlled aperture device adjusts the high precision of clear field.
3, guide rail adopts support type precision linear bearing guide, and be applicable to single axial movement, the linearity is good.
4, leading screw and stepper motor adopt integral structure, effectively reduce the size of whole automatically controlled aperture device, compact conformation.
Accompanying drawing explanation
Fig. 1 is the structural representation of high precision electric control aperture device provided by the invention;
Fig. 2 is the shape figure of provided by the invention pair of arc diaphragm one preferred embodiment;
Fig. 3 is the simulation drawing utilizing provided by the invention pair of arc diaphragm cutting Gaussian beam;
Fig. 4 is that when utilizing MATLAB difference simulated dual arc diaphragm and rounded constrictions diaphragm cutting Gaussian beam, the luminous energy obtained is with the change curve comparison diagram of diaphragm displacement;
Fig. 5 is that when utilizing MATLAB difference simulated dual arc diaphragm and rounded constrictions diaphragm cutting Gaussian beam, the luminous energy rate of change obtained is with the change curve comparison diagram of diaphragm displacement;
Wherein:
The two arc diaphragm of 1-; 101-first arc limit; 102-second arc limit; 103-first straight flange; 104-second straight flange; 105-the 3rd straight flange; 2-driving mechanism; The logical light mouth of 3-circle; 4-pedestal; 5-first optoelectronic switch; 6-second optoelectronic switch; 7-guide rail; 8-slide block; 9-screw rod; 10-feed screw nut; 11-bearing seat; 12-bearing; 13-cover plate; 14-Gaussian beam.
Embodiment
See Fig. 1, the invention provides a kind of high precision electric control aperture device, it comprises the pedestal 4 that two arc diaphragm 1, driving mechanism 2, gear train, limit switch, controller and bottom offer circular logical light mouth 3; Driving mechanism 2 to be arranged on pedestal 4 and to be connected with controller; Gear train comprises secondary and secondary with the guide rail slide block leading screw being set in parallel in circular logical light mouth 3 both sides of the guide rail slide block be arranged on pedestal 4; Leading screw is arranged along the Power output direction of driving mechanism 2, and leading screw one end is connected with driving mechanism 2, and the other end is fixed on the sidepiece of pedestal 4; Two arc diaphragm 1 is arranged on guide rail slide block pair and leading screw; Two arc diaphragm 1 is schistose texture, and its outline line comprises the first arc limit 101 and the second arc limit, arc limit 102, first 101 and the second arc limit 102 and surrounds flare openings and have a common end; The clear aperture that the arc radius on the first arc limit 101 and the second arc limit 102 and circle lead to light mouth 3 matches; Driving mechanism 2 drives two arc diaphragm 1 to make flare openings lead to light mouth 3 relative to circle by guide rail slide block pair and leading screw and does parallel tangential motion; Limit switch is fixed on the two ends of guide rail slide block pair and is connected with controller, and the height of limit switch is higher than the height of guide rail slide block pair.
Preferably, the outline line of the two arc diaphragms in the present invention also comprises the first straight flange 103, second straight flange 104 and the 3rd straight flange 105; The common end on the first arc limit 101 and the second arc limit 102 is positioned on the perpendicular bisector of the 3rd straight flange 105; Flare openings is the 3rd straight flange 105 dorsad; The other end on the first arc limit 101 is connected by the first straight flange 103 with the 3rd straight flange 105; The other end on the second arc limit 104 is connected by the second straight flange 104 with the 3rd straight flange 105.
Preferably, as shown in Figure 2, the first straight flange 103 of the outline line of the two arc diaphragms 1 in the present invention is parallel with the second straight flange 104; With the common end on the first arc limit 101 and the second arc limit 102 for initial point, to cross initial point and perpendicular to the straight line of the 3rd straight flange 105 for X-axis, to cross initial point and perpendicular to the straight line of X-axis for Y-axis, set up rectangular coordinate system, the direction of close flare openings is X-axis positive dirction, the direction of close first straight flange 103 is Y-axis positive dirction, then the mathematical model of this pair of arc diaphragm is:
Wherein, R is the arc radius on the first arc limit and the second arc limit,
for any point on arc and the line of initial point and the angle of X-axis positive dirction, x, y are respectively the coordinate of any point on the first arc limit or the second arc limit.
In order to carry out accurate position and speeds control to two arc diaphragm 1, the driving mechanism 2 in the present invention selects stepper motor, and stepper motor has that positioning precision is high, reproducible, reliability is high and be convenient to the advantages such as programmed control.
In the present invention, guide rail slide block pair is comprised guide rail 7 and is arranged at the slide block 8 that pedestal 4 also freely can slide on guide rail 7 by guide rail 7; Guide rail 7 and leading screw are set in parallel in the both sides of circular logical light mouth 3; Two arc diaphragm 1 is arranged on slide block 8 and leading screw; Stepper motor drives two arc diaphragm 1 to make flare openings lead to light mouth 3 relative to circle by leading screw and slide block 8 and does parallel tangential motion.
Further, the guide rail 7 in the present invention selects the walking depth of parallelism to be the support type precision linear bearing guide of 3.5 μm, and its applicable single axial movement, the linearity is good, is fixed on pedestal 4 by screw.
In the present invention, limit switch comprises the first optoelectronic switch 5 and the second optoelectronic switch 6 being individually fixed in guide rail 7 two ends; First optoelectronic switch and the second optoelectronic switch are connected with controller respectively; In order to effectively carry out spacing to two arc diaphragm 1, the height of the first optoelectronic switch 5 and the second optoelectronic switch 6 is all higher than the height of slide block 8.Optoelectronic switch has that concord speed is fast, precision is high, volume is little, the life-span is long, lightweight and not by advantages such as magnetic field and concussion affect.
In the present invention, leading screw comprises screw rod 9 and is set in also can along the reciprocating feed screw nut 10 of screw rod on screw rod 9; Screw rod 9 is arranged along the Power output direction of stepper motor, and screw rod one end is connected with stepper motor, and the other end is fixed on the sidepiece of pedestal 4 successively by bearing 12 and bearing seat 11; Two arc diaphragm 1 is fixed on feed screw nut 10 and slide block 8.
In order to reduce the size of whole high precision electric control aperture device, make its compact conformation, by leading screw and the integral formula structure of Step Motor Design in the present invention.
High precision electric control aperture device provided by the invention also comprises and being fastened on pedestal 4 in order to protect the cover plate 13 of the inner each assembly of whole high precision electric control aperture device.
The course of work of the present invention is: the signal that leading screw stepper motor receives controller drives screw turns, two arc diaphragm 1 moves with feed screw nut 10 and slide block 8, the movable change completing clear field of two arc diaphragm 1, and then complete the control to light source radiant energy flux.
Below, provided by the invention pair of arc diaphragm and existing rounded constrictions diaphragm are contrasted:
Suppose that Gaussian beam radius is 25mm, the rate of change of two arc diaphragm and rounded constrictions diaphragm is 5mm/ step, the amplitude A=100 of Gaussian beam spatial amplitude distribution, the ω with a tight waist of Gaussian beam
0=80.Utilize MATLAB simulated dual arc diaphragm to cut Gaussian beam 14 (as shown in Figure 3) and rounded constrictions diaphragm cutting Gaussian beam 14, obtain the curved line relation (as shown in Figure 4) of luminous energy and diaphragm displacement.As shown in Figure 4, two arc diaphragm is 68.3mm by standard-sized sheet to the stroke of full cut-off, and rounded constrictions diaphragm is 49mm (its minimum aperture of the diaphragm can only accomplish Φ 1mm) by standard-sized sheet to the stroke of full cut-off.
From Fig. 4 and Fig. 5, owing to there is minimum-value aperture problem, rounded constrictions diaphragm can not be completely closed, finally can remain the luminous energy of 1.3%; Due to the restricted number of rounded constrictions diaphragm, rounded constrictions diaphragm cutting Gaussian beam process is approximately polygon contraction process, inevitably there is beating of luminous energy rate of change, and luminous energy rate of change maximal value is 1.9%.
For provided by the invention pair of arc diaphragm, from Fig. 4 and Fig. 5, luminous energy is along with two arc diaphragm displacement linear change, and luminous energy rate of change maximal value is 1.4%, and there is not the tripping problems of luminous energy rate of change.Therefore, provided by the invention pair of arc diaphragm effectively can solve the problem of minimum light door screen aperture and bowl lamp Intensity of Gaussian distribution, and can realize the Serial regulation of light intensity.
In the present invention, be parallel to by the flare openings of two arc diaphragm 1 circular logical light mouth 3 to realize clear field change do tangential motion, thus two arc diaphragm can be closed completely, efficiently solves the minimum diaphragm aperture problem that rounded constrictions diaphragm exists; And, adopt two arc diaphragm can realize carrying out Serial regulation to the light intensity in Gaussian distribution, the tripping problems of the luminous energy rate of change existed when solving the adjustment of rounded constrictions diaphragm.
In addition, by stepper motor, leading screw, guide rail and optoelectronic switch cooperation, effectively can ensure the linear movement of two arc diaphragm, positioning precision and stationarity, thus ensure that whole automatically controlled aperture device adjusts the high precision of clear field.
Claims (9)
1. a high precision electric control aperture device, is characterized in that: comprise the pedestal that two arc diaphragm, driving mechanism, gear train, limit switch, controller and bottom offer circular logical light mouth; Described driving mechanism to be arranged on pedestal and to be connected with controller; Described gear train comprises secondary and secondary with the guide rail slide block leading screw being set in parallel in circular logical Guang Kou both sides of the guide rail slide block be arranged on pedestal; Leading screw is arranged along the Power output direction of driving mechanism, and leading screw one end is connected with driving mechanism, and the other end is fixed on the sidepiece of pedestal; Described pair of arc diaphragm is arranged on guide rail slide block pair and leading screw; Two arc diaphragm is schistose texture, and its outline line comprises the first arc limit and the second arc limit, and the first arc limit and the second arc limit surround flare openings and have a common end; The clear aperture that the arc radius on described first arc limit and the second arc limit and circle lead to light mouth matches; Described driving mechanism drives two arc diaphragm to make flare openings lead to light mouth relative to circle by guide rail slide block pair and leading screw and does parallel tangential motion; Described limit switch is fixed on the two ends of guide rail slide block pair and is connected with controller, and the height of limit switch is higher than the height of guide rail slide block pair.
2. high precision electric control aperture device according to claim 1, is characterized in that: the outline line of described pair of arc diaphragm also comprises the first straight flange, the second straight flange and the 3rd straight flange; The common end on described first arc limit and the second arc limit is positioned on the perpendicular bisector of the 3rd straight flange; Described flare openings is the 3rd straight flange dorsad; The other end on described first arc limit is connected by the first straight flange with the 3rd straight flange; The other end on described second arc limit is connected by the second straight flange with the 3rd straight flange.
3. high precision electric control aperture device according to claim 2, is characterized in that: described first straight flange is parallel with the second straight flange; With the common end on the first arc limit and the second arc limit for initial point, to cross initial point and perpendicular to the straight line of the 3rd straight flange for X-axis, to cross initial point and perpendicular to the straight line of X-axis for Y-axis, set up rectangular coordinate system, the direction of close flare openings is X-axis positive dirction, the direction of close first straight flange is Y-axis positive dirction, then the mathematical model of described pair of arc diaphragm is:
Wherein, R is the arc radius on the first arc limit and the second arc limit,
for any point on arc and the line of initial point and the angle of X-axis positive dirction, x, y are respectively the coordinate of any point on the first arc limit or the second arc limit.
4. the high precision electric control aperture device according to claim 1 or 2 or 3, is characterized in that: described driving mechanism is stepper motor; Described limit switch comprises the first optoelectronic switch and the second optoelectronic switch that are individually fixed in the secondary two ends of guide rail slide block; Described first optoelectronic switch and the second optoelectronic switch are connected with controller respectively.
5. high precision electric control aperture device according to claim 4, is characterized in that: described guide rail slide block pair is comprised guide rail and is arranged at the slide block that pedestal also freely can slide on guide rail by guide rail; Described guide rail and leading screw are set in parallel in the both sides of circular logical light mouth; Described pair of arc diaphragm is arranged on slide block and leading screw; Described stepper motor drives two arc diaphragm to make flare openings lead to light mouth relative to circle by leading screw and slide block and does parallel tangential motion; Described first optoelectronic switch and the second optoelectronic switch are individually fixed in the two ends of guide rail, and the height of the first optoelectronic switch and the second optoelectronic switch is all higher than the height of slide block.
6. high precision electric control aperture device according to claim 5, is characterized in that: described guide rail is the walking depth of parallelism is the support type precision linear bearing guide of 3.5 μm.
7. high precision electric control aperture device according to claim 6, is characterized in that: described leading screw comprises screw rod and is set in also can along the reciprocating feed screw nut of screw rod on screw rod; Described screw rod is arranged along the Power output direction of stepper motor, and screw rod one end is connected with stepper motor, and the other end is fixed on the sidepiece of pedestal by support member; Described pair of arc diaphragm is fixed on feed screw nut and slide block.
8. high precision electric control aperture device according to claim 7, is characterized in that: described leading screw and stepper motor are integral structures.
9. high precision electric control aperture device according to claim 8, is characterized in that: described support member comprises bearing seat and bearing; Described screw rod is fixed on the sidepiece of pedestal successively by bearing and bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112105.0A CN104749767B (en) | 2015-03-13 | 2015-03-13 | High-precision electric control diaphragm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112105.0A CN104749767B (en) | 2015-03-13 | 2015-03-13 | High-precision electric control diaphragm device |
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| CN104749767A true CN104749767A (en) | 2015-07-01 |
| CN104749767B CN104749767B (en) | 2017-05-03 |
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| CN201510112105.0A Expired - Fee Related CN104749767B (en) | 2015-03-13 | 2015-03-13 | High-precision electric control diaphragm device |
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| CN105607241A (en) * | 2016-02-05 | 2016-05-25 | 中国科学院西安光学精密机械研究所 | Optical system of solar telescope |
| CN108957734A (en) * | 2018-06-04 | 2018-12-07 | 中国科学院合肥物质科学研究院 | A kind of electronic diaphragm of high temperature resistant Larger Dynamic adjustable range |
| CN109141404A (en) * | 2018-08-14 | 2019-01-04 | 哈尔滨工业大学 | Spherical veiling glare inhibits system around the adjustable star sensor of openings of sizes |
| CN113164147A (en) * | 2018-11-19 | 2021-07-23 | 锐珂医疗公司 | Collimator control |
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| CN203164511U (en) * | 2013-02-27 | 2013-08-28 | 中国工程物理研究院应用电子学研究所 | Electrically adjustable diaphragm |
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| CN204515246U (en) * | 2015-03-13 | 2015-07-29 | 中国科学院西安光学精密机械研究所 | High-precision electric control diaphragm device |
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| JP2007034121A (en) * | 2005-07-29 | 2007-02-08 | Fujifilm Holdings Corp | Optical controller, optical control element, and photographing device |
| CN101078853A (en) * | 2006-05-23 | 2007-11-28 | 佳能株式会社 | Optical apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607241A (en) * | 2016-02-05 | 2016-05-25 | 中国科学院西安光学精密机械研究所 | Optical system of solar telescope |
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| CN108957734A (en) * | 2018-06-04 | 2018-12-07 | 中国科学院合肥物质科学研究院 | A kind of electronic diaphragm of high temperature resistant Larger Dynamic adjustable range |
| CN109141404A (en) * | 2018-08-14 | 2019-01-04 | 哈尔滨工业大学 | Spherical veiling glare inhibits system around the adjustable star sensor of openings of sizes |
| CN109141404B (en) * | 2018-08-14 | 2021-09-17 | 哈尔滨工业大学 | Opening-size-adjustable star sensor surrounding spherical stray light suppression system |
| CN113164147A (en) * | 2018-11-19 | 2021-07-23 | 锐珂医疗公司 | Collimator control |
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|---|---|
| CN104749767B (en) | 2017-05-03 |
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