CN109143724A - A kind of adjustable aperture device - Google Patents
A kind of adjustable aperture device Download PDFInfo
- Publication number
- CN109143724A CN109143724A CN201811322423.XA CN201811322423A CN109143724A CN 109143724 A CN109143724 A CN 109143724A CN 201811322423 A CN201811322423 A CN 201811322423A CN 109143724 A CN109143724 A CN 109143724A
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- China
- Prior art keywords
- ring
- lead
- photomask
- aperture
- light modulation
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- 238000004904 shortening Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- 241001083492 Trapa Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
Abstract
The present invention provides a kind of adjustable aperture device, including the first ring, light modulation ring, the second ring, a plurality of leads, photomask, more positioning screws and more adjusting screws.It is characterized in that photomask is cylindric, lighttight elastic film；First ring and the second ring are coaxially fixed together, and fix the both sides of the face of photomask respectively；Light modulation ring is coaxially assemblied between the first ring and the second ring, can be rotated about axis；One end of every lead is fixed on the first ring by positioning screw, and the other end bypasses the outer wall of photomask, and is fixed on light modulation ring by adjusting screw；All leads are spacedly distributed along the outer wall circumference of photomask, and the outer wall for constraining photomask constitutes approximate rounded aperture；Light modulation ring affects the outer wall of lead and photomask relative to the rotation of the first ring, and then aperture is made to amplify and reduce.The invention has the advantages that aperture is approximately round and can continuously be sized under various apertures.
Description
Technical field
The invention belongs to optical fields, more particularly to a kind of adjustable aperture device.
Background technique
It is the device that can be penetrated for controlling how many light, and then inject photosurface in adjustable aperture, is common in phase
In the optical devices such as machine, microscope, laser testing instrument.Initial adjustable aperture is a series of circular holes of different sizes, arrangement
On a disk for having central axis, different apertures is selected to achieve the effect that control aperture by rotating circular disk, it is this
Aperture is still applied in the equipment such as microscope at present.Hereafter there is cat-eye type aperture, it has ellipse or water chestnut by two panels center
The thin slice arranged opposite in shape hole forms, and is relatively moved by two thin slices and changes aperture size.
Both the above adjustable aperture all has the advantages that components are few, structure is simple, but the first adjustable aperture is only solid
Fixed several apertures are available, are unfavorable for fine adjustment light throughput；Although it is big to continuously adjust aperture second
It is small, but iris shape irregular, according to optical diffraction phenomenon, irregular iris shape will cause the imaging on photosurface
There is light and dark complicated pattern, influences that accuracy is imaged.
Aperture is closer to circle, then image quality is higher.Occurs iris-type diaphragm as a result, it is by multiple arcs gold
Belong to the overlapped composition of blade, the clutch by controlling blade can change the size of center bore.Blade quantity is more, blade
The design of arc envelope curve it is more reasonable, then stop opening is closer to round.However, iris-type diaphragm can only be in the aperture of a certain characteristic
Under aperture, realize stop opening that blade envelope curve is constituted be approximately it is round, other when still there is apparent cusp, influence to be imaged
Accuracy；In addition, structure is complicated for iris-type diaphragm, even up to dozens of components, operation and maintenance is expensive.
For example, Chinese patent application notification number: 101907814 A of CN applies for day for announcing 2010.12.08, discloses one
Kind iris apparatus, it is made of overlapped multi-disc aperture blades, and the device is by rear class aperture blades successively to previous stage
The cam path of aperture blades carries out shading, realizes and carries out shading to the whole cam paths entered in optical path opening.However, the device
Still not being avoided that iris-type diaphragm, structure is complicated, stop opening is not circle, there are the deficiencies of cusp.
Summary of the invention
It is circle in order to overcome existing adjustable aperture or there are aperture, but aperture not continuously adjustable；Or there are apertures
There are cusp, but the deficiency of aperture continuously adjustable, the present invention provides one kind under various pore sizes, and the equal approximation of aperture is in
Circle, and the adjustable aperture device of aperture continuously adjustable.
The technical scheme adopted by the invention to solve the technical problem is that: a kind of adjustable aperture device, including the first ring, tune
The ring of light, the second ring, a plurality of leads, photomask, more positioning screws and more adjusting screws, the photomask are cylindric, no
The elastic film of light transmission, first ring and second ring are coaxial to be fixed together, and secures the above shading respectively
The both sides of the face of film, the cylindrical space determined by first ring, the second ring and photomask respective inner wall is light beam
By aperture, the light modulation ring is coaxial to be assemblied between first ring and the second ring, can be rotated about axis, described is every
One end of bar lead is fixed on first ring by the positioning screw, and the other end bypasses the outer wall of the photomask, and by
The adjusting screw is fixed on the light modulation ring, the lead have it is a plurality of, along the outer of the photomask in same section
Wall circumference is spacedly distributed, and the outer wall for constraining the photomask constitutes the effective aperture that light beam passes through, i.e. aperture, by a plurality of institute
It states lead always and constrains the outer wall of the photomask, it is described by the elasticity of the photomask and the effect of lead tensile force
Aperture will be approximate rounded, and the center of circle be on the axis of first ring, by rotating the light modulation ring, affect the lead with
The outer wall of the photomask can make the aperture amplify and reduce.
Further, be fixed on first ring it is being spacedly distributed along a circumference, with described to draw number of lines identical
More positioning screws are provided between another circumference etc. on the light modulation ring for one end of the one-to-one fixation lead
Every distribution and with the same number of adjusting screw of the positioning screw, for the other end of the one-to-one fixation lead, institute
Circumference where stating positioning screw and the adjusting screw respectively is in except the outer wall of the photomask.
Further, it is provided with adjustment hole corresponding with the position of the adjusting screw on first ring, passed through described
Adjustment hole turns the adjusting screw, and the effective length of lead described in each item can be changed, by the subtle of the adjusting screw
It turning, keeps the effective length of lead described in each item essentially equal, then the aperture will be entirely on the center with the axis of first ring,
It avoids light from penetrating and there is offset on photosurface, in addition, the extension or shortening of equivalent are each by turning to the adjusting screw
The effective length of lead described in item, the ratio of the adjustable rotation of light modulation ring and aperture scaling.
Further, when adjusting the effective length of the lead under primary condition, a lead is corresponding described fixed
Angle between position screw and the adjusting screw and the axis of first ring should be greater than 180 degree, less than 360 degree, described to draw
The effective length of line should be less than the circumference arc length where the corresponding positioning screw of above-mentioned angle and the adjusting screw, but
The sum of the radius of circumference, about big, the described lead of above-mentioned angle have where being greater than the positioning screw and the adjusting screw
It is longer to imitate length, then when the light modulation ring rotates same angle, the amount of zoom of the stop opening is smaller, the precision of aperture adjustment
It is higher.
Further, it is each provided with wave groove on the contact surface of first ring and the light modulation ring, first ring
Together with wave groove is mutually clamped with the wave groove of the light modulation ring, the non-artificial rotation of the light modulation ring, the light modulation are prevented
Ring continuously can be rotated and be positioned relative to first ring, and the aperture is made continuously to amplify and reduce.
Further, the outer wall of the photomask is smooth, the lead smooth, inductility flexible thin wire for surface,
Outer wall of the photomask other than both sides of the face is only contacted with the lead.
Due to taking above-mentioned technical proposal, the invention has the following advantages:
(1) center location of aperture can be adjusted accurately, avoid light from penetrating and there is offset on photosurface；
(2) aperture size can be continuously adjusted, while being guaranteed under various apertures, aperture is approximate rounded, guarantees that imaging is quasi-
True property；(3) device components are few, structure is simple, and installation and debugging are convenient, reduce production and application cost.
Detailed description of the invention
Fig. 1 is the schematic perspective view of an embodiment of the invention.
Fig. 2 is by the schematic diagram of the position the I local cutting amplification in Fig. 1.
Fig. 3 is the front schematic view for illustrating positioning screw, adjusting screw, lead and photomask correlation.
Fig. 4 is the side schematic view for illustrating positioning screw, adjusting screw, lead and photomask correlation.
Fig. 5 is for illustrating the schematic diagram by affecting lead to realize aperture scaling.
Specific embodiment
Hereinafter, being illustrated using attached drawing to an embodiment of the invention.
Fig. 1 is the schematic perspective view of an embodiment of the invention, and Fig. 2 is to put the position the I local cutting of Fig. 1
Big schematic diagram, light modulation ring and lead therein are not shown, and Fig. 3 is for illustrating positioning screw, adjusting screw, lead and shading
The front schematic view of film correlation, the first ring therein are partly cut away, and photomask only shows aperture, and Fig. 4 is for illustrating
Positioning screw, adjusting screw, lead and photomask correlation side schematic view, Fig. 5 be for illustrate by affecting lead
Realize the schematic diagram of aperture scaling.
A kind of adjustable aperture device as shown in Figure 1, Figure 2 and Figure 3, including it is the first ring 1, light modulation ring 2, the second ring 3, a plurality of
Lead 4, photomask 5, more positioning screws 6 and more adjusting screws 7, the photomask 5 are cylindric, lighttight Thin Elastic
Film, first ring 1 and second ring 3 are coaxial to be fixed together, and secures the above the two side ends of photomask 5 respectively
Face avoids the axial rotation of photomask 5, the cylinder determined by first ring 1, the second ring 3 and the respective inner wall of photomask 5
Shape space is the aperture that light beam passes through, and the light modulation ring 2 is coaxial to be assemblied between first ring 1 and the second ring 3, and can
It is rotated about axis for manual operation, and one end of the every lead 4 is fixed on first ring 1 by the positioning screw 6,
The other end bypasses the outer wall of the photomask 5, and is fixed on the light modulation ring 2 by the adjusting screw 7, and the lead 4 has
It is a plurality of, it is 3 in embodiment illustrated in fig. 3, the lead 4 is in same section along between outer wall circumference of the photomask 5 etc.
Every distribution, the outer wall for constraining the photomask 5 constitutes the effective aperture that light beam passes through, i.e. aperture 8, since 3 leads 4 begin
The outer wall of the photomask 5 is constrain eventually, by the elasticity of the photomask 5 and the effect of 4 tensile force of lead, the aperture 8
Approximate rounded, the center of circle is on the axis of first ring 1, by rotating the light modulation ring 2, affects the lead 4 and institute
The outer wall of photomask 5 is stated, the aperture 8 can be made to amplify and reduce.
First ring 1 and the second ring 3 as shown in Figure 2 is fixed together by locating piece 11 and screw 12, and described the
It is provided with film pressure ring 13 on one ring 1 and the second ring 3, and by fastening screw 14, the both sides of the face of the photomask 5 are distinguished
It is fixed on first ring 1 and the second ring 3.
Be spacedly distributed along a circumference and 4, the lead is fixed on first ring 1 as shown in Figure 3 and Figure 4
Number identical more positioning screws 6 are 3 in embodiment shown in Fig. 3, for one end of the one-to-one fixation lead 4,
Be provided on the light modulation ring 2 be spacedly distributed along another circumference and with the same number of adjusting screw 7 of the positioning screw 6,
It is 3, for the other end of the one-to-one fixation lead 4, the positioning screw 6 and the tune in embodiment illustrated in fig. 3
Circumference where whole screw 7 is respective is in except the outer wall of the photomask 5.
It is provided with adjustment hole 9 corresponding with the position of the adjusting screw 7 on first ring 1 as shown in Figure 3, passes through
The adjustment hole 9 turns the adjusting screw 7, the effective length of lead 4 described in each item can be changed, lead 4 has described in each item
When imitating equal length, then the axis of the aperture 8 and first ring 1 is entirely on the center, avoids light from penetrating and exists on photosurface
Offset, in addition, by turning to the adjusting screw 7, the extension of equivalent or the effective length for shortening lead 4 described in each item,
The ratio of the adjustable rotation of light modulation ring 2 and the aperture 8 scaling.
As shown in figure 3, when adjusting the effective length of the lead 4 in an initial condition, a corresponding institute of the lead 4
Stating the angle between positioning screw 6 and the adjusting screw 7 and the axis of first ring 1 should be greater than 180 degree, less than 360 degree,
The effective length of the lead 4 should be less than the circle where the corresponding positioning screw 6 of above-mentioned angle and the adjusting screw 7
All arc length, but be greater than the sum of the radius of 7 place circumference of the positioning screw 6 and the adjusting screw, above-mentioned angle is about big, institute
The effective length for stating lead 4 is longer, then when the light modulation ring 2 rotates same angle, the amount of zoom in 8 aperture of aperture is smaller,
The precision that aperture 8 adjusts is higher.
It is each provided with wave groove 10 on the contact surface of first ring 1 as shown in figures 1 and 3 and the light modulation ring 2, described the
Together with the wave groove of one ring 1 is mutually clamped with the wave groove of the light modulation ring 2, the non-artificial rotation of the light modulation ring 2 is prevented,
The light modulation ring 2 can make the aperture 8 continuously amplify and reduce relative to first ring 1 continuously rotation and positioning.
The outer wall of the photomask 5 is smooth, the lead 4 smooth, inductility flexible thin wire, shading for surface
Outer wall of the film 5 other than both sides of the face is only contacted with the lead 4.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, such as in embodiment
Lead have 3, but 3 or more leads are still able to achieve identical function, and protection scope of the present invention is not construed as being only limitted to
Concrete form described in embodiment, protection scope of the present invention is also and conceive according to the present invention in those skilled in the art can
The equivalent technologies mean expected.
Claims (6)
1. a kind of adjustable aperture device, including the first ring (1), light modulation ring (2), the second ring (3), a plurality of leads (4), photomask
(5), more positioning screws (6) and more adjusting screws (7), it is characterised in that: the photomask (5) is cylindric, opaque
Elastic film, first ring (1) and second ring (3) are coaxial to be fixed together, and secures the above screening respectively
The both sides of the face of light film (5), the cylinder determined by first ring (1), the second ring (3) and photomask (5) respective inner wall
Shape space is the aperture that light beam passes through, light modulation ring (2) it is coaxial be assemblied in first ring (1) and the second ring (3) it
Between, it can be rotated about axis, one end of the every lead (4) is fixed on first ring (1) by the positioning screw (6)
On, the other end bypasses the outer wall of the photomask (5), and is fixed on the light modulation ring (2) by the adjusting screw (7), institute
Stating lead (4) has a plurality of, is spacedly distributed in same section along the outer wall circumference of the photomask (5), constrains the screening
The outer wall of light film (5) constitutes the effective aperture that light beam passes through, i.e. aperture (8), and the aperture (8) is approximate rounded, and the center of circle is in
On the axis of first ring (1), by rotating the light modulation ring (2), the lead (4) and the photomask (5) are affected
Outer wall can make the aperture (8) to amplify and reduce.
2. a kind of adjustable aperture device as described in claim 1, it is characterised in that: be fixed on first ring (1) along one
More positioning screws (6) that circumference is spacedly distributed, identical with the lead (4) item number, for described in one-to-one fixation
One end of lead (4), be provided on the light modulation ring (2) be spacedly distributed along another circumference and with the positioning screw (6) number
The identical adjusting screw of mesh (7) is used for the other end of the one-to-one fixation lead (4), the positioning screw (6) and described
Circumference where adjusting screw (7) is respective is in except the outer wall of the photomask (5).
3. a kind of adjustable aperture device as described in claim 1, it is characterised in that: be provided on first ring (1) with it is described
The corresponding adjustment hole in position (9) of adjusting screw (7) passes through the adjustment hole (9) and turns the adjusting screw (7), can change
Become the effective length of lead described in each item (4), when the effective length of lead described in each item (4) is equal, then the aperture (8) and institute
The axis for stating the first ring (1) is entirely on the center, the extension of equivalent or the effective length for shortening lead (4) described in each item, adjustable
The ratio of light modulation ring (2) rotation and the aperture (8) scaling.
4. a kind of adjustable aperture device as described in claim 1, it is characterised in that: adjust the lead in an initial condition
(4) when effective length, one article of corresponding positioning screw (6) of lead (4) and the adjusting screw (7) and described the
Angle between the axis of one ring (1) should be greater than 180 degree, less than 360 degree, and the effective length of the lead (4) should be less than upper
The circumference arc length where the corresponding positioning screw (6) of angle and the adjusting screw (7) is stated, but is greater than the positioning spiral shell
The sum of the radius of circumference where following closely (6) and the adjusting screw (7).
5. a kind of adjustable aperture device as described in claim 1, it is characterised in that: first ring (1) and the light modulation ring
(2) it is each provided on contact surface wave groove (10), the wave groove of the wave groove of first ring (1) and light modulation ring (2)
It is mutually clamped the non-artificial rotation for preventing light modulation ring (2) together, while the light modulation ring (2) can be relative to described the
One ring (1) continuously rotation and positioning, makes the aperture (8) continuously amplify and reduce.
6. a kind of adjustable aperture device as described in claim 1, it is characterised in that: the outer wall of the photomask (5) is smooth, institute
Stating lead (4) is that surface is smooth, flexible thin wire of inductility, and outer wall of the photomask (5) other than both sides of the face is only
There is contact with the lead (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322423.XA CN109143724B (en) | 2018-11-08 | 2018-11-08 | Adjustable light ring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322423.XA CN109143724B (en) | 2018-11-08 | 2018-11-08 | Adjustable light ring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109143724A true CN109143724A (en) | 2019-01-04 |
| CN109143724B CN109143724B (en) | 2023-12-22 |
Family
ID=64808037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811322423.XA Active CN109143724B (en) | 2018-11-08 | 2018-11-08 | Adjustable light ring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109143724B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403758A (en) * | 2019-06-25 | 2019-11-05 | 南安市品龙新材料科技有限公司 | A kind of wearable smart machine with increasing visual function |
| CN110518452A (en) * | 2019-07-30 | 2019-11-29 | 曾涵宇 | Electric pumping deep ultraviolet AlGaN semiconductor laser |
| CN111486966A (en) * | 2020-05-07 | 2020-08-04 | 江苏日颖慧眼智能设备有限公司 | Diaphragm assembly and infrared sensor temperature measuring device |
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| US4184454A (en) * | 1977-12-02 | 1980-01-22 | La Dee Nagao | Animal fumigating unit |
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| AT288856B (en) * | 1968-02-06 | 1971-01-15 | Pentacon Dresden Veb | INTERCHANGEABLE TAKING LENS, PREFERRED FOR SINGLE-EYE REFLECTIVE CAMERAS, WITH BUILT-IN PRESELECTION APERTURE AND A SECTOR AUXILIARY SECTOR CLOSURE IS NOT OPENED FOR THE REAL EXPOSURE PROCESS |
| US4184454A (en) * | 1977-12-02 | 1980-01-22 | La Dee Nagao | Animal fumigating unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111486966B (en) * | 2020-05-07 | 2022-12-09 | 江苏日颖慧眼智能设备有限公司 | Diaphragm assembly and infrared sensor temperature measuring device |
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| Publication number | Publication date |
|---|---|
| CN109143724B (en) | 2023-12-22 |
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