CN104614835B - A kind of adjustable rectangular aperture - Google Patents
A kind of adjustable rectangular aperture Download PDFInfo
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- CN104614835B CN104614835B CN201510081932.8A CN201510081932A CN104614835B CN 104614835 B CN104614835 B CN 104614835B CN 201510081932 A CN201510081932 A CN 201510081932A CN 104614835 B CN104614835 B CN 104614835B
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- slide block
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- frame
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diaphragms For Cameras (AREA)
Abstract
The present invention is that a kind of adjustable rectangular aperture includes: frame, screw mechanism, the first spring, the second spring, the first slide block, the second slide block, lever, two blades；The position corresponding with U-shaped elongated slot with the holding part of fixing spring at the installing hole of a side setting of frame communicates；The U-shaped elongated slot with three grooves is positioned at the position of frame edge；The first spring and the first slide block is placed in the bottom of the first groove；The second spring and the second slide block is placed in the bottom of the second groove；The lever of protruding shaft is embedded in the 3rd groove；The top of screw mechanism and the plane contact of the first slide block；One end of 3rd spring is placed in holding part, the other end of the 3rd spring and the second slide block end thereof contacts；Two blades are symmetrically disposed at the upper surface of frame；Each blade is fixing with first, second corresponding slide block to be connected, and the square blade face of each blade is positioned on the position that frame upper surface is corresponding, and the square blade involutory rectangular opening of formation staggered relatively that two blades are corresponding, constitutes adjustable rectangular aperture.
Description
Technical field
The invention belongs to optical texture technical field, be specifically related to a kind of adjustable rectangular aperture.
Background technology
Diaphragm is used to be constrained to as the edge of optical element, frame in the optical system part of beam size or imaging space scope
Frame or the barrier with holes arranged especially, conventional circular or rectangle, Experiments of Optics it is frequently necessary to the diaphragm of adjustable size.
Generally adjustable diaphragm is made up of multi-disc, approximately forms a circle.Even if making 4, when changing diaphragm size,
Four limits rotate, it is impossible to use as field stop.Further, since the thickness of blade, mutual separate strength, diaphragm cannot close very
Little.
Common slit, can close the least, but can only limit a direction, if additionally direction is come with other slit
Limit, then due to four limits the most in one plane, therefore diaphragm cannot be placed on required face, particularly when put less than
On the face of imaging, edge is by unintelligible.
Common rectangular aperture, such as the diaphragm of fixed size, can not be sized continuously, when needing to adjust, it has to do
Many, it is replaced with entirety.The most such as using wire cutting technology, the linearity at edge is bad, and corner root is not easy to do whole
Together.
Size, at submillimeter diaphragm, even circular, is processed the most relatively difficult, square the most difficult.
Summary of the invention
(1) to solve the technical problem that
It is difficult to asking of the non-rotary continuously adjustabe rectangular aperture of rectangle in adjustment to solve tradition diaphragm technology
Topic, solves small size diaphragm difficulty processing problems simultaneously, it is an object of the invention to make that diaphragm shape is regular, edge is coplanar, each limit folder
The adjustable rectangular aperture that angle root is the sharpest keen.
(2) technical scheme
The adjustable rectangular aperture of one of the present invention includes: frame, screw mechanism, the first spring, the second spring, the first cunning
Block, lever, the second slide block, two blades and the 3rd spring；Wherein:
Containing installing hole, U-shaped elongated slot, guide pass, axis hole, light hole, holding part in frame；Frame is cuboid structure,
Frame central is provided with light hole, and light hole is used for printing opacity；U-shaped elongated slot is set in frame；A side in frame arranges installation
Hole and the holding part of fixing spring, installing hole and the holding part position corresponding with U-shaped elongated slot communicate；U-shaped elongated slot is positioned at frame limit
Inside edge；Described U-shaped elongated slot structure is made up of the first groove, the second groove and the 3rd groove；First groove and the second groove all have guide pass；
First groove and second groove of correspondence are set inside frame opposite sides edge, and the first groove and the second groove are parallel to each other；At machine
It is provided with the 3rd groove inside the edge of frame opposite side, and the 3rd groove and the first groove, the second groove are mutually perpendicular to；Bottom at the first groove
Placing the first spring and the first slide block, a fulcrum of the first spring and the sidewall contact of the first groove, two contacts of the first spring are divided
Not contacting with the one side of the first slide block, the another side of the first slide block contacts with the guide pass of the first groove, and the first spring is used for
First slide block is clamped on the guide pass in the first groove；
Place the second spring and the second slide block in the bottom of the second groove, a fulcrum of the second spring and the sidewall of the second groove connect
Touching, the position corresponding with the one side of the second slide block, two contacts of the second spring contacts, the another side of the second slide block and second
The guide pass contact of groove, the second spring is for being clamped on the guide pass in the second groove by the second slide block；3rd groove is placed
Lever, the medium position at lever arranges a protruding shaft, and protruding shaft pin enters in the axis hole of the 3rd trench bottom and forms the fulcrum of lever；Spiral shell
Rotation mechanism is placed in installing hole, and the top of screw mechanism is in close contact with the plane of the first slide block；One end of 3rd spring is placed in
In holding part, the other end of the 3rd spring and one end of the second slide block are in close contact；Two blades are symmetrically disposed at the upper of frame
On surface；Each blade has dihedral blade always, each blade and the first corresponding slide block, the fixing connection of the second slide block, often
The square blade face of individual blade is positioned on the position that frame upper surface is corresponding, and the square blade phase that two blades are corresponding
Involutory rectangular opening is formed, by the first slide block, movement between the second slide block and the guide pass of frame, for adjustment two to placing
The size of the involutory rectangular opening size of individual blade, makes two bucket cover on light hole, constitutes adjustable rectangular aperture.
(3) beneficial effect
The present invention by the blade that connects two-by-two, the blade of formation, the most staggered relatively, it is achieved that rectangular aperture, have
Well processing characteristics, by ensureing the flatness of blade, the edge linear degree of blade is fine, the mode of two panels blade unit,
Ensure that angle root is the sharpest keen, the compound mode of two panels blade, it is ensured that rectangular aperture can realize closing the least, evades
The technical barrier of little hole machined.
Use the hole of the institutional adjustment rectangular aperture of lever slide block, diaphragm size continuously adjustabe, particularly can make
For field stop, in the research and development of ADAPTIVE OPTICS SYSTEMS, the scope between each picture after adjusting array lens, pass through
Adjust, utilize visual field to greatest extent and make not disturb between them.Use spring to eliminate the structure in gap in inside so that
Diaphragm adjusts steadily, uses the screw mechanism with latching characteristics to carry out diaphragm adjustment so that the stability of diaphragm is fine.
In the present invention, between the blade of combination, when adjusting, resistance is the least, and the flatness of blade is good, and the blade part of processing is straight
Dimension is good, and namely the seamed edge of diaphragm is regular；The flatness of blade is good simultaneously, not only contributes to four limits in approximately the same plane
On, diaphragm the most more can be made to close the least, level off to and can completely close, thus realize submillimeter, even decimillimeter, micron-sized light
Door screen.
The diaphragm continuously adjustabe of the present invention, changes fixed aperture relatively, can bring the simplicity in use to experimental implementation.
Accompanying drawing explanation
Fig. 1 illustrates the population structure schematic diagram of the adjustable rectangular aperture of the present invention；
Fig. 2 illustrates the structure chart of frame；
Fig. 3 a illustrates the structure chart of the first slide block；
Fig. 3 b illustrates the structure chart of the second slide block；
Fig. 4 a illustrates the structure left view of a blade in the present invention；
Fig. 4 b is the front view of Fig. 4 a；
Fig. 5 a illustrates the left view of one blade construction of the present invention；
Fig. 5 b is that the front view of Fig. 5 a illustrates that in blade, the first blade and the second blade are identical constructive embodiment；
Fig. 5 c and Fig. 5 d illustrates the first blade in blade and two kinds of embodiments that the second blade is different structure；
Fig. 6 a illustrates that two blade combinations of the present invention form the structural front view of rectangular aperture；
Fig. 6 b is the shaft side figure of Fig. 6 a；
Fig. 7 illustrates the processing tool figure of blade of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
Referring to Fig. 1 and illustrate the population structure of the adjustable rectangular aperture of the present invention, this is adjustable, and rectangular aperture includes frame 1, spiral shell
Rotation mechanism the 2, first spring 3a, the second spring 3b, the first slide block 4,6, two blades 7 of lever the 5, second slide block and the 3rd spring 8；
Refer to frame 1 shown in Fig. 2 include: installing hole 11, U-shaped elongated slot 12, guide pass 13, axis hole 14, light hole 15, holding part 16,
Wherein:
Frame 1 is cuboid structure, and frame 1 center is provided with light hole 15, and light hole 15 is for printing opacity；Frame 1 sets
Put U-shaped elongated slot 12；
The holding part 16 of installing hole 11 and fixing spring, installing hole 11 and holding part 16 are set at frame 1 one side respectively
The position corresponding with U-shaped elongated slot 12 communicates；U-shaped elongated slot 12 is positioned at the edge with frame 1 and has the position of certain distance；
Described U-shaped elongated slot 12 structure is made up of first groove the 121, second groove 122 and the 3rd groove 123；First groove 121 and second
Groove 122 all has guide pass 13；First groove 121 and the second groove 122 of correspondence is set inside frame 1 opposite sides edge, and
First groove 121 is parallel to each other with the second groove 122；It is provided with the 3rd groove 123, and the 3rd groove inside the edge of frame 1 opposite side
123 are mutually perpendicular to first groove the 121, second groove 122；
The first spring 3a and the first slide block 4, a fulcrum of the first spring 3a and the first groove is placed in the bottom of the first groove 121
The sidewall contact of 121, two contacts of the first spring 3a one side with the first slide block 4 respectively contacts, the opposite side of the first slide block 4
Face contacts with the guide pass 13 of the first groove 121, and the first spring 3a is for being clamped on the guide rail in the first groove 121 by the first slide block 4
On face 13；
The second spring 3b and the second slide block 6, a fulcrum of the second spring 3b and the second groove is placed in the bottom of the second groove 122
The sidewall contact of 122, the position corresponding with the one side of the second slide block 6, two contacts of the second spring 3b contacts, the second slide block 6
Another side contacts with the guide pass 13 of the second groove 122, and the second spring 3b is for being clamped on the second slide block 6 in the second groove 122
Guide pass 13 on.
Placing lever 5 in the 3rd groove 123, the medium position at lever 5 arranges a protruding shaft 51, and protruding shaft 51 is sold into the 3rd groove
In axis hole 14 bottom 123 and form the fulcrum of lever 5；
Screw mechanism 2 is placed in installing hole 11, and the top of screw mechanism 2 is in close contact with the plane 41 of the first slide block 4；
One end of 3rd spring 8 is placed in holding part 16, and the other end of the 3rd spring 8 and one end of the second slide block 6 are tight
Contact；
Two blades 7 are symmetrically disposed on the upper surface of frame 1；Each blade 7 has dihedral blade always, each blade
7 fix connection with first corresponding slide block the 4, second slide block 6, and the square blade face of each blade 7 is positioned at frame 1 upper surface pair
On the position answered, and the square blade involutory rectangular opening of formation staggered relatively of two blade 7 correspondences, by the first slide block 4,
Movement between second slide block 6 and the guide pass 13 of frame 1, for adjusting the size of the involutory rectangular opening size of two blades 7,
Make two blades 7 cover on light hole 15, constitute adjustable rectangular aperture.
Refer to the first slide block 4 shown in Fig. 3 a and there is a plane 41, seal face 42, termination 43, contact surface 44 and installation
Screw 45, is placed in screw in the installation screw 45 that the installing hole of blade 7 is corresponding with each slide block and fixing connects.Work as screw machine
When structure 2 withstands plane 41, the guide pass 13 of in the first groove 121 is carried out translation by the first slide block 4, and termination 43 heads on lever 5
Rotate.First slide block 4 is because of the first spring 3a pressure to seal face 42, and contact surface 44 is contacted with guide pass 13 closely,
Thus the first slide block 4 stable movement.Equally, refering to the second slide block 6 shown in Fig. 3 b, there is plane 41', seal face 42', end
Head 43', contact surface 44' and installation screw 45', is placed in the installation screw that the installing hole of blade 7 is corresponding with each slide block by screw
In 45' and fixing connect.Effect due to lever 5 two ends so that the first slide block 4 is contrary with second slide block 6 direction of motion.Lever
The 5 termination 43' promoting the second slide block 6, plane 41' withstands the 3rd spring 8 for the gap that disappears.Second slide block 6 is because of the second spring
The 3b pressure to seal face 42', and make contact surface 44' and guide pass 13' contact closely, thus the second slide block 6 stable movement.
Continuous refer to Fig. 1 and illustrate, the work process of the present invention: during the knob 21 of turn screw mechanism 2, screw mechanism 2 revolves
Turn, make the screw mandrel in screw mechanism 2 move to left down (in Fig. 1 shown in the arrow of upper left), by promote the plane 41 of the first slide block 4 to
Move in lower left.First slide block 4 is pressed on the guide pass 13 that frame 1 is formed by the first spring 3a, and the first slide block 4 keeps flat
Steady motion.First slide block 4 heads on one end of lever 5 after protruding shaft 51 rotates counterclockwise, and the other end of lever 5 promotes the second slide block
The plane 41 of 6 heads on the 3rd bullet in holding part 16 to upper right side translation (in Fig. 1 shown in upper right arrow), the second slide block 6 upper end
Spring 8.Such first slide block 4 and second slide block 6 direction of motion conversely, because with lever 5 contact point distance lever 5 center of rotation
Apart from identical, become bascule 5, so the first slide block 4 is identical with the move distance of the second relative frame 1 of slide block 6.Work as spiral
Mechanism 2 is when other direction rotates, and the 3rd spring 8 promotes the second slide block 6 to move downward (in Fig. 1 shown in lower right arrow), and the
Two slide blocks 6 push the other end of lever 5 so that one end of lever 5 heads on the first slide block 4 and moves upward (lower left arrow institute in Fig. 1
Show), now eliminate the screw mandrel in screw mechanism 2 and the gap between the first slide block 4.So, first slide block the 4, second slide block 6
Can the contrary and equidistant translation at the stable the most seamlessly travel directions of screw mechanism 2 times.
Continuous refer to shown in Fig. 1 a blade 7 there is one first blade and one second blade；Refer to Fig. 4 a and Fig. 4 b
The structure chart of each described blade is shown；One side P of each blade is the face, place of blade R, and the another side of blade is installed surface Q
Face, place, the intersecting lens of blade R and installed surface Q is blade 73.Also have on blade two connecting holes 71, storage tank 72,
One end the 74, second end the 75, the 3rd end the 76, the 4th end 77.
Refer to Fig. 5 a and Fig. 5 b and illustrate that in embodiment 1, a blade 7 is by identical structure the first blade and one second blade
Composition, wherein one side Pa of the first blade is the face, place of the first blade Ra, and the another side of the first blade is the first installed surface Qa
Face, place, the intersecting lens of the first blade Ra and the first installed surface Qa is the first blade 73a；Also there are on first blade two companies
Connect hole the 71, first end the 74, second end the 75, the 3rd end the 76, the 4th end 77；One side Pb of the second blade is the place of the second blade Rb
Face, the another side of the second blade is the second installed surface Qb, and the intersecting lens of the second blade Rb and the second installed surface Qb is the second blade
73b；The first end 74 in the first blade is provided with two connecting holes 71, and the first end 74 is the most flat with the second end 75 being oppositely arranged
OK, the first end 74 is mutually perpendicular to the 3rd end 76, is tiltedly provided with between the end point and the end point of the 3rd end 76 of the second end 75
First blade Ra, the angle between the first end 74 and the first blade Ra is 45 °；First blade 73a and the second blade 73b is the most vertical
Straight placement, the 4th end 77 overlaps, and the second installed surface Qb and the first installed surface Qa fits tightly and is fixedly connected, from
And make the first blade 73a and two straight line compact siro spinning technology of the second blade 73b, form square breach 70.The one side of the second blade
Pb is fitted on above first slide block the 4, second slide block 6 slide block of correspondence, and the connecting hole 71 of the second blade is sliding with corresponding first
Block the 4, second slide block 6 connects.Described connecting hole 71 is installing technological hole, and storage tank 72 is bonding process groove.
Refer to the blade 7 shown in Fig. 5 c, Fig. 5 d and be the first blade and the second blade is the embodiment of different structure, each
The structure of the second blade in blade 7 is same as in Example 1, and the first blade contains only the first blade Ra and the first blade 73a, and
First blade 73a and the second blade 73b is mutually perpendicular to place, and remaining technical characteristic is identical, repeats no more.At the first blade
With second after the orthogonal position relationship of blade 73 between blade adjusts, storage tank 72 is utilized to make the first blade and one second cutter
Sheet combines, and forms square breach 70.
Refer to Fig. 6 a and Fig. 6 b illustrate by lobus sinister sheet 7, the combination schematic diagram of lobus dexter sheet 7, there is shown: lobus dexter sheet 7 with
Lobus sinister sheet 7 structure is identical, and placement direction is contrary, and lobus sinister sheet 7 above is one side Pa of the first blade, lobus sinister sheet 7 times
Face is the second installed surface Qb, then lobus dexter sheet 7 above is the second installed surface Qb of the second blade, lobus dexter sheet 7 be presented herein below first
One side Pa of blade, to the right, and breach 70 direction of lobus dexter sheet is to the left for breach 70 direction in lobus sinister sheet 7；So lobus sinister sheet 7
First blade press against the second blade of lobus dexter sheet 7, and the first blade of lobus dexter sheet 7 press against the second blade of lobus sinister sheet 7, lobus sinister sheet 7,
3rd end 76 of lobus dexter sheet 7 crosses one another overlap, the first installed surface Qa of the first blade of lobus sinister sheet 7, the second of the second blade
Installed surface Qb is coplanar with the second installed surface Qa of the first installed surface Qb of the first blade of lobus dexter sheet 7, the second blade, lobus sinister sheet 7
On breach 70 relative and coplanar with the breach 70 on lobus dexter sheet 7, form involutory rectangular aperture 0, and four of this rectangular aperture 0
Limit, namely the blade 73a of lobus sinister sheet, 73b, lobus dexter sheet 73a, 73b coplanar.
Lobus sinister sheet 7 is connected on the second slide block 6, lobus dexter sheet 7 is connected on the first slide block 4, when turn screw mechanism 2
Time, the first slide block 4 is to right translation, under the effect of lever 5, and the second slide block 6 equivalent the most to the left translation so that two
The spacing of individual blade 7 becomes big, and two breach 70 spacings become big, and involutory rectangular aperture 0 amplifies；When reverse turn screw mechanism 2
Time, the first slide block 4 is to left, and the second slide block 6 equivalent the most to the right translates so that the spacing of two blades 7
Diminishing, two breach 70 spacings diminish, and involutory rectangular aperture 0 reduces.When setting is reduced to minimum: the diagonal angle of involutory rectangular aperture 0,
Namely two summits of two breach 70 overlap, then the involutory rectangular aperture of rectangular aperture is square；If involutory rectangle
2, the diagonal angle of opening 0 is misaligned, but the blade 73a of lobus sinister sheet overlaps with the blade 73a of lobus dexter sheet, or the blade of lobus sinister sheet
73b overlaps with the blade 73b of lobus dexter sheet, then the involutory rectangular aperture of rectangular aperture is rectangle.
To square rectangular aperture, when fixed frame 1, when to make guide pass 13 and ground be 45 degree, involutory rectangular aperture 0
Being square, its four limit is vertical with ground level.To oblong rectangular diaphragm, it is also possible to when fixed frame 1 by guide pass 13
Keeping suitable angle with ground, rectangle four limit making involutory rectangular aperture 0 be formed is vertical with ground level.
Owing to the first slide block 4 and the second slide block 6 are acted on relative motion by lever 5 mechanism, fix the first slide block 4, second sliding
The inevitable relative motion the most together of block 6 lobus sinister thereon sheet 7, lobus dexter sheet 7, it is achieved closer or far from and produce the change of rectangular aperture size
Change, such relative motion, cause the center of involutory rectangular aperture 0 not change.
The blade 73 of the first blade and one second blade ground directly, can adopt with the following method:
Using harder steel, carry out Quenching Treatment, so, blade 73 can be sharper；
First blade and one second blade use Sheet Metal Processing, plate two sides is polished row, can use thick plate, this
Sample is easier to ensure that plate has higher flatness, if diaphragm that will be the least, it is also possible to would be improved flat by hand lapping
Face degree；
By stacked for multiple plates, by special tooling, illustrate as shown in Figure 7 the base 91 of fixture, pinching screw 92,
Multi-disc the first blade and the second blade 93, can carry out plain grinding grinding to the first blade 73a and the second blade 73b.The end of fixture
Seat 91 uses steel, selects magnetic material, in order to be placed on plain grinding lathe use, it is possible to use wire cutting technology makes,
The screw head bulb of pinching screw 92 is easier to clamping multi-disc the first blade and one second blade 93.
Angle between blade cutting edge R and installed surface Q can optimize；Angle is excessively sharp, then plate easily dissipates, Ke Yifu
Help adhesion process, again glue is removed after plain grinding completes；After plain grinding is complete, if carrying out hand lapping again, repair owing to plain grinding grinds
The slight sword that power of cutting is brought more greatly, can improve the sharpness of blade again；
The plate of mid portion, the linearity of its blade is more preferable with the flatness of plate, is stacked on one after being alignd by blade 73
Rise, with wire cutting machine tool, the installing hole 71 of consistent size, storage tank 72 and the exterior contour of blade can be processed, i.e. described
The exterior contour of blade includes blade the 73, first end the 74, second end the 75, the 3rd end 76 and the 4th end 77.
The above, the only detailed description of the invention in the present invention, but protection scope of the present invention is not limited thereto, and appoints
What is familiar with the people of this technology in the technical scope that disclosed herein, it will be appreciated that the conversion expected or replacement, all should contain
Within the scope of the comprising of the present invention.
Claims (7)
1. an adjustable rectangular aperture, it is characterised in that including: frame, screw mechanism, the first spring, the second spring, the first cunning
Block, lever, the second slide block, two blades and the 3rd spring；Wherein:
Containing installing hole, U-shaped elongated slot, guide pass, axis hole, light hole, holding part in frame；Frame is cuboid structure, frame
Center is provided with light hole, and light hole is used for printing opacity；U-shaped elongated slot is set in frame；A side in frame arrange installing hole and
The holding part of fixing spring, the position that installing hole is corresponding with U-shaped elongated slot with holding part communicates；U-shaped elongated slot is positioned at frame edge
Side；Described U-shaped elongated slot structure is made up of the first groove, the second groove and the 3rd groove；First groove and the second groove all have guide pass；At machine
First groove and second groove of correspondence are set inside frame opposite sides edge, and the first groove and the second groove are parallel to each other；Another in frame
It is provided with the 3rd groove inside the edge of side, and the 3rd groove and the first groove, the second groove are mutually perpendicular to；Place in the bottom of the first groove
First spring and the first slide block, a fulcrum of the first spring and the sidewall contact of the first groove, two contacts of the first spring respectively with
The one side contact of the first slide block, the another side of the first slide block contacts with the guide pass of the first groove, and the first spring is used for the
One slide block is clamped on the guide pass in the first groove；
The second spring and the second slide block is placed in the bottom of the second groove, a fulcrum of the second spring and the sidewall contact of the second groove,
The position corresponding with the one side of the second slide block, two contacts of the second spring contacts, the another side of the second slide block and the second groove
Guide pass contacts, and the second spring is for being clamped on the guide pass in the second groove by the second slide block；Lever is placed in the 3rd groove,
Medium position at lever arranges a protruding shaft, and protruding shaft pin enters in the axis hole of the 3rd trench bottom and forms the fulcrum of lever；Screw machine
Setting up in installing hole, the top of screw mechanism is in close contact with the plane of the first slide block；One end of 3rd spring is placed in accommodating
In portion, the other end of the 3rd spring and one end of the second slide block are in close contact；Two blades are symmetrically disposed at the upper surface of frame
On；Each blade has dihedral blade always, each blade and the first corresponding slide block, the fixing connection of the second slide block, Mei Geye
The square blade face of sheet is positioned on the position that frame upper surface is corresponding, and square blade corresponding to two blades is put relatively
Put the involutory rectangular opening of formation, by the first slide block, movement between the second slide block and the guide pass of frame, for adjusting two leaves
The size of the involutory rectangular opening size of sheet, makes two bucket cover on light hole, constitutes adjustable rectangular aperture.
The most adjustable rectangular aperture, it is characterised in that described first slide block has plane, a compression
Face, termination, contact surface and installation screw, be placed in screw in the installing hole of blade and the installation screw that the first slide block is corresponding and solid
Fixed connection；When screw mechanism withstands the plane of the first slide block, the first slide block will carry out translation along the guide pass in the first groove,
The termination of the first slide block heads on lever rotation；First slide block is because there being first spring pressure to the seal face of the first slide block, and makes
The contact surface obtaining the first slide block contacts closely with guide pass, thus the first slide block movement is steady；Described second slide block has one
Plane, seal face, termination, contact surface and installation screw, be placed in the installing hole of blade and the installation that the second slide block is corresponding by screw
In screw and fixing connect；Effect by lever two ends so that the first slide block and the second slide block movement are in opposite direction；Lever pushing
The termination of the second slide block, the plane of the second slide block withstands the 3rd spring for the gap that disappears；Second slide block is because there being the second spring pair
The pressure of the seal face of the second slide block, and the contact surface of the second slide block is contacted with guide pass closely, thus the second slide block fortune
Dynamic steady.
The most adjustable rectangular aperture, it is characterised in that during the knob of turn screw mechanism, screw mechanism
Rotating, the screw mandrel in screw mechanism moves to left down, will promote the plane moved beneath to the left of the first slide block；First slide block is by
One spring compression is on the guide pass that frame is formed, and the first slide block held stationary moves；First slide block heads on one end of lever
After protruding shaft rotates counterclockwise, the other end of lever promotes the plane of the second slide block to upper right side translation, the second upper end of slide block top
The 3rd spring in holding part；Such first slide block and the second slide block movement are in opposite direction, the first slide block and the second slide block phase
Identical to the move distance of frame；When screw mechanism rotates to other direction, the 3rd spring promotes the second slide block to move downward,
And second slide block push the other end of lever so that one end of lever heads on the first slide block and moves upward, and is used for eliminating screw machine
The gap between screw mandrel and the first slide block in structure；First slide block, the second slide block are stable under screw mechanism seamlessly to be carried out
In opposite direction and equidistant translation.
The most adjustable rectangular aperture, it is characterised in that described blade has one first blade and one second
Blade；The one side of the first blade is the face, place of the first blade, and the another side of the first blade is the face, place of the first installed surface, the
The intersecting lens of one blade and the first installed surface is the first blade；Also have on first blade two connecting holes, the first end, second
End, the 3rd end and the 4th end；The one side of the second blade is the face, place of the second blade, and the another side of the second blade is the second installation
Face, the intersecting lens of the second blade and the second installed surface is the second blade；The first end in the first blade is provided with two connecting holes,
First end is parallel to each other with the second end being oppositely arranged, and the first end and the 3rd end are mutually perpendicular to, at the end point and of the second end
Tiltedly it is provided with the first blade between the end point of three ends, there are between the first end and the first blade 45 degree of angles；First blade and
Two blades are mutually perpendicular to place, and the second installed surface and the first installed surface are fixed and connected, so that the first blade and the second sword
The face-to-face compact siro spinning technology in portion forms square blade；The face of the one side of the second blade is fitted in the first slide block of correspondence, the second cunning
On above block, thus form a blade；Connecting hole on second blade connects with the first corresponding slide block, the second slide block.
The most adjustable rectangular aperture, it is characterised in that described each blade is by mutually isostructural first
Blade and one second blade composition.
The most adjustable rectangular aperture, it is characterised in that described each blade is by the first of different structure
Blade and one second blade composition.
Adjustable rectangular aperture the most according to claim 1, it is characterised in that when diaphragm is reduced to minimum, said two blade
Liang Ge summit, involutory rectangular opening diagonal angle overlap, then rectangular aperture is square, and rectangular aperture be square diaphragm；To angular vertex
Misaligned, but have one group of blade to overlap, involutory rectangular aperture is rectangle, and rectangular aperture is rectangle diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510081932.8A CN104614835B (en) | 2015-02-15 | 2015-02-15 | A kind of adjustable rectangular aperture |
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| CN201510081932.8A CN104614835B (en) | 2015-02-15 | 2015-02-15 | A kind of adjustable rectangular aperture |
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| CN104614835A CN104614835A (en) | 2015-05-13 |
| CN104614835B true CN104614835B (en) | 2017-01-04 |
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| CN106872026A (en) * | 2017-03-29 | 2017-06-20 | 中国计量科学研究院 | Adjustable faint light generating apparatus |
| 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 |
| CN114488514A (en) * | 2022-03-01 | 2022-05-13 | 中国科学院苏州生物医学工程技术研究所 | Electric continuously adjustable pinhole device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004333554A (en) * | 2003-04-30 | 2004-11-25 | Canon Inc | Light quantity adjusting device, photographing device and filter |
| DE102009020287B4 (en) * | 2009-05-07 | 2013-12-24 | Leica Camera Ag | Central locking |
| CN201477269U (en) * | 2009-08-19 | 2010-05-19 | 茂莱（南京）仪器有限公司 | Linear changeable diaphragm |
| WO2013005439A1 (en) * | 2011-07-07 | 2013-01-10 | キヤノン電子株式会社 | Light quantity adjustment device and optical apparatus |
| EP2823351A4 (en) * | 2012-03-07 | 2016-01-06 | Univ Singapore | A mems iris diaphragm for an optical system and method for adjusting a size of an aperture thereof |
| CN203490445U (en) * | 2013-10-12 | 2014-03-19 | 中山联合光电科技有限公司 | Controllable aperture switching system |
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