CN207636831U - A kind of lens barrel - Google Patents
A kind of lens barrel Download PDFInfo
- Publication number
- CN207636831U CN207636831U CN201721746919.0U CN201721746919U CN207636831U CN 207636831 U CN207636831 U CN 207636831U CN 201721746919 U CN201721746919 U CN 201721746919U CN 207636831 U CN207636831 U CN 207636831U
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- China
- Prior art keywords
- arc surface
- lens barrel
- surface tooling
- tooling
- jackscrew
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Abstract
The utility model belongs to precision optics machinery field more particularly to a kind of lens barrel, including lens barrel ontology and at least four arc surface toolings；Lens barrel inner body wall is offered is distributed on lens barrel inner body wall with the matched arc surface tooling slot of arc surface tooling, four arc surface tooling slots, and arc surface tooling is located in arc surface tooling slot；The depth of arc surface tooling slot is more than the thickness of arc surface tooling, and the arc length of arc surface tooling slot is slightly larger than the arc length of arc surface tooling, it is ensured that arc surface tooling does not occur circumferentially displaced in arc surface tooling slot, can only move linearly in the radial direction of lens barrel；There is top wire hole, jackscrew to pass through top wire hole, hold out against arc surface tooling on lens barrel ontology；Arc surface tooling is fitted closely with time frame.Solves the method using jackscrew adjustment primary and secondary mirror light shaft coaxle, the problem that adjustment efficiency is low and the stiffness of system adjusted is not high.
Description
Technical field
The utility model belongs to precision optics machinery field more particularly to a kind of lens barrel, for main secondary mirror concentricity adjustment and
It is fixed that a kind of prioritization scheme is provided.
Background technology
It is main after optical manufacturing since reflective optical system precision is more than the precision of smooth turning lathe centering processing
Secondary mirror optical axis can't often reach the required precision of optical design, so needing to carry out further dress school to primary and secondary mirror.
In practical dress school, need to carry out micro adjustment to principal reflection mirror or secondary mirror, to achieve the purpose that primary and secondary mirror light shaft coaxle.By
It is less than primary mirror in secondary mirror weight, it is easier to be adjusted and fix, it will usually be adjusted to secondary mirror to reach primary and secondary mirror optical axis
Coaxially.
The prior art is to carry out micro adjustment using four jackscrews left and right directly low to secondary mirror frame height, ensure itself and primary mirror it
Between concentricity, use interferometer to carry out primary and secondary mirror system wave aberration during the adjustment and measure, until coma value reaches minimum.
But the method has the disadvantage that：1, since jackscrew and secondary mirror frame contact area are small, the optical system adjusted is often not steady enough
Fixed, after long-time service, micro loosening will cause wave aberration largely to deteriorate.2, due to the contact area of jackscrew and time frame
Small, secondary mirror tends not to move linearly along X or Y-direction in the sagittal plane of lens barrel when adjustment, is easy to happen random rotation,
Influence adjustment efficiency.
Utility model content
In order to solve the method for adjusting primary and secondary mirror light shaft coaxle using jackscrew, adjustment efficiency is low and the system adjusted is stablized
The not high problem of degree, the utility model provide a kind of lens barrel, to meet high efficiency adjustment primary and secondary mirror concentricity and reinforce secondary mirror knot
The needs of structure stability.
Identical with the secondary mirror frame radius of curvature arc surface tooling of design greatly increases and secondary mirror the micro adjustment of secondary mirror progress
Frame contact area can greatly improve the stability of secondary mirror structure；Design arc surface tooling slot and jackscrew auxiliary blind hole to adjust
When whole secondary mirror, the radial direction of secondary mirror towards lens barrel moves linearly, and reduces the blindness of secondary mirror moving direction, improves work effect
Rate.
The technical solution of the utility model is to provide a kind of lens barrel, including lens barrel ontology, is characterized in that：Also
Including at least four arc surface toolings, the radius of curvature of arc surface tooling is identical as time radius of curvature of frame；
Above-mentioned lens barrel inner body wall offer with the matched at least four arc surface toolings slot of at least four arc surface toolings, at least
Four arc surface tooling slots are distributed on lens barrel inner body wall, and above-mentioned arc surface tooling is located in arc surface tooling slot；
The radial direction for defining lens barrel is the depth direction of arc surface tooling slot, and the radial direction of arc surface tooling is arc surface tooling
Thickness direction；
The depth of above-mentioned arc surface tooling slot is more than the thickness of arc surface tooling, and the arc length of above-mentioned arc surface tooling slot is more than cambered surface work
The arc length of dress, it is ensured that arc surface tooling does not occur circumferentially displaced in arc surface tooling slot, can only make straight line in the radial direction of lens barrel
It is mobile；Ensure arc surface tooling in arc surface tooling slot can only in the sagittal plane of lens barrel along XY to moving.
There is top wire hole, jackscrew to pass through top wire hole, hold out against arc surface tooling on lens barrel ontology；
Arc surface tooling is fitted closely with time frame, makees straight line along the radial direction of lens barrel when adjusting arc surface tooling by jackscrew
When mobile, arc surface tooling pushes time frame to move linearly along the radial direction of lens barrel, does not shift.
In order to ensure secondary mirror in lens barrel sagittal plane, realize that the linear movement of X or Y-direction, four arc surface tooling slots are equal
For cloth in lens barrel inner body wall, four tooling groove center lines are orthogonal.X or Y-direction are to hang down mutually in lens barrel sagittal plane
The coma of straight both direction, any direction can be broken into two, the arbitrary directions XY component.
Preferably, in order to ensure jackscrew and arc surface tooling are steadily contacted, arc surface tooling is equipped with jackscrew and assists blind hole, jackscrew
It is inserted into jackscrew across top wire hole and assists blind hole, holds out against arc surface tooling.
Preferably, above-mentioned jackscrew auxiliary blind hole is taper jackscrew auxiliary blind hole, and tapering bottom surface is to be matched with jackscrew end
Plane ensures jackscrew and arc surface tooling is more stable contacts, being capable of the more preferable more stable jackscrew promotion arc surface tooling that allows
Micro movement.
Preferably, in order to further reinforce the stability of secondary mirror, be equipped on above-mentioned lens barrel ontology and arc surface tooling to
Lack a hole for injecting glue, the hole for injecting glue in hole for injecting glue and arc surface tooling on lens barrel ontology interconnects, after the completion of filling school, in injecting glue
Special glue is injected in hole, and secondary frame is fixed in lens barrel.
Preferably, there are four hole for injecting glue for tool on above-mentioned lens barrel ontology, are located at top wire hole surrounding；On arc surface tooling there are four tools
Hole for injecting glue is located at jackscrew and assists blind hole surrounding.
Preferably, the utility model lens barrel further includes the auxiliary hole for injecting glue being arranged on lens barrel ontology.
The utility model also provides a kind of method of adjustment primary and secondary mirror concentricity, includes the following steps：
Step 1：Primary mirror is packed into above-mentioned lens barrel, then arc surface tooling is packed into arc surface tooling slot, then will be secondary equipped with secondary mirror
Frame is packed into lens barrel so that arc surface tooling is bonded with time frame；Jackscrew is finally held out against into arc surface tooling across top wire hole；
Step 2：Primary and secondary mirror light path is built according to optical system parameter, then utilizes interferometer measurement primary and secondary mirror
Wave aberration；
Step 3：The coma size and Orientation provided according to interferometer, turning jackscrew makes arc surface tooling in arc surface tooling slot
Interior promotion carries out the micro linear movement along lens barrel radial direction with its secondary frame fitted closely；
Step 4：According to interferometer to the measured value of optical system coma, jackscrew moving direction and stroke size are judged, when
When the coma value of interferometer measurement optical system reaches the primary and secondary mirror Systems Theory analogue value, it was demonstrated that secondary mirror optical axis and primary mirror optical axis are same
Axis stops adjustment.
Preferably, when arc surface tooling, which is equipped with jackscrew, assists blind hole, in step 1, top wire hole is passed through to be inserted into top jackscrew
Silk auxiliary blind hole, holds out against arc surface tooling.
Preferably, further include step 5 after step 4：Dedicated silicon rubber is injected from hole for injecting glue and auxiliary hole for injecting glue.
The utility model has the beneficial effects that：
1, the utility model optimizes traditional lens barrel structure, increases arc surface tooling, and jackscrew acts on arc surface tooling
Jackscrew auxiliary blind hole on, arc surface tooling moves in arc surface tooling slot, while pushing the secondary frame progress fitted closely with it
It moves and (is not subjected to displacement in the circumferential direction of frame along XY to moving i.e. in lens barrel sagittal plane) along lens barrel radial direction is micro,
So that ensureing that secondary mirror moves linearly along lens barrel radial direction, reduces the blindness of secondary mirror moving direction, carries when adjusting secondary mirror
High working efficiency；
2, jackscrew does not act directly on time frame, but the arc surface tooling by being fitted closely with secondary mirror frame is to secondary mirror
Carry out micro adjustment, can greatly increase with secondary mirror frame contact area, greatly improve the stability of secondary mirror structure；
3, in addition, each arc surface tooling surrounding makes a call to four holes, lens barrel surrounding also makes a call to four holes, after the completion of filling school, in hole
Special glue is injected, secondary frame is Nian Jie with lens barrel, further increase the stability of secondary mirror structure.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is embodiment adjustment process schematic.
Reference numeral is in figure：1- arc surface toolings, 2- hole for injecting glue, 3- jackscrews assist blind hole, 4- arc surface tooling slots, 5- jackscrews
Hole, 6- jackscrews, 7- assist hole for injecting glue, 8- lens barrel ontologies, 9- frame.
Specific implementation mode
The utility model is further described below in conjunction with drawings and the specific embodiments.
In conjunction with Fig. 1 and Fig. 2, which includes 8, four arc surface toolings 1 of lens barrel ontology and is arranged in 8 inner wall of lens barrel ontology
Four arc surface tooling slots 4, the radius of curvature of arc surface tooling 1 is identical as the radius of curvature of time frame 9, and arc surface tooling 1 is located at arc
In face tooling slot 4, inner wall is fitted closely with time frame 9, and the contact surface for increasing the two connects, and improves stability.
Arc surface tooling slot 4 is matched with arc surface tooling 1, and 4 size of arc surface tooling slot is set according to arc surface tooling 1
Meter, can ensure that arc surface tooling 1 is not deviated when filling school, ensure that arc surface tooling 1 pushes secondary mirror to be carried out in the radial direction of lens barrel
Linear movement.The radial direction that lens barrel can specifically be defined is the depth direction of arc surface tooling slot 4, the radial direction of arc surface tooling 1
Direction is the thickness direction of arc surface tooling 1；The depth of arc surface tooling slot 4 is more than the thickness of arc surface tooling 1, arc surface tooling slot 4
Length (i.e. the arc length of arc surface tooling slot 4) is slightly larger than (i.e. the arc length of arc surface tooling 1) length of arc surface tooling 1, it is ensured that cambered surface work
It fills 1 and does not occur in arc surface tooling slot 4 circumferentially displaced, can only move linearly in the radial direction of lens barrel, that is, adjust cambered surface work
Time frame can only be made to be moved along X or Y-direction in the sagittal plane of lens barrel when filling 1, X or Y-direction are in lens barrel sagittal plane
Interior, the coma of two mutually perpendicular directions, any direction can be broken into two, the arbitrary directions XY component.
It is provided with jackscrew auxiliary blind hole 3 on arc surface tooling 1, on lens barrel ontology 8 there is top wire hole 5, jackscrew 6 to pass through top wire hole
5, which are inserted into jackscrew, assists blind hole 3, holds out against arc surface tooling 1, and it is taper which, which assists blind hole 3, and tapering bottom surface is plane, blind hole
Size and bed-plate dimension are designed according to the jackscrew 6 that bottom surface is plane, ensure the contact more stable with arc surface tooling 1 of jackscrew 6
Together, more preferable more stable jackscrew 6 can be allowed to push 1 micro movement of arc surface tooling.
Hole for injecting glue 2 is further opened on lens barrel ontology 8 and arc surface tooling 1, the hole for injecting glue 2 of lens barrel ontology 8 is arranged in jackscrew
The surrounding in hole 5, the surrounding that blind hole 3 is assisted in jackscrew is arranged in the hole for injecting glue 2 of arc surface tooling 1, after the completion of filling school, to hole for injecting glue 2
Interior injection special glue, secondary frame 9 is Nian Jie with lens barrel, further strengthen the stability of secondary mirror.
It is additionally provided with auxiliary hole for injecting glue 7 at the position that lens barrel ontology 8 is different from hole for injecting glue 2, further ensures secondary
The stability of mirror.
The concentricity of primary and secondary mirror can be adjusted by following steps：
1) primary mirror, is packed into lens barrel, then arc surface tooling 1 is packed into arc surface tooling slot 4, then by the secondary frame 9 equipped with secondary mirror
It is packed into lens barrel so that arc surface tooling 1 is bonded with time frame 9；It finally passes through top wire hole 5 to be inserted into jackscrew jackscrew 6 and assists blind hole 3,
Hold out against arc surface tooling 1；Primary and secondary mirror light path is built according to optical system parameter, then utilizes zygo interferometer measurement primary and secondarys
Mirror wave aberration；
2) the coma size and Orientation, provided according to zygo interferometers is adjusted secondary mirror, that is, turning jackscrew 6 makes cambered surface
Tooling 1 pushes the secondary frame 9 fitted closely with it to carry out micro linear movement in arc surface tooling slot 4；
3), four jackscrews 6 can ensure time frame 9 towards four direction (- x ,-y in lens barrel sagittal plane, x, the side y
To) micro linear movement is carried out, 6 moving direction of jackscrew and stroke are judged to the measured value of optical system coma according to interferometer
Size illustrates to be adjusted to secondary mirror optical axis and primary mirror optical axis together when the coma value of interferometer measurement optical system reaches minimum
Axis；
4) it after, completing the adjustment of secondary mirror position, is injected from 1 hole for injecting glue 2 of designed arc surface tooling and auxiliary hole for injecting glue 7 special
Silicon rubber secondary mirror structure is further fixed.
Claims (6)
1. a kind of lens barrel, including lens barrel ontology (8), it is characterised in that：Further include at least four arc surface toolings (1), arc surface tooling
(1) radius of curvature is identical as time radius of curvature of frame (9)；
Lens barrel ontology (8) inner wall offers and the matched at least four arc surface toolings slot of at least four arc surface toolings (1)
(4), at least four arc surface tooling slots (4) are distributed on lens barrel ontology (8) inner wall, and the arc surface tooling (1) is located at arc surface tooling slot
(4) in；
The radial direction for defining lens barrel is the depth direction of arc surface tooling slot (4), and the radial direction of arc surface tooling (1) is cambered surface work
Fill the thickness direction of (1)；
The depth of the arc surface tooling slot (4) is more than the thickness of arc surface tooling (1), and the arc length of the arc surface tooling slot (4) is more than
The arc length of arc surface tooling (1), it is ensured that arc surface tooling (1) do not occur in the arc surface tooling slot (4) it is circumferentially displaced, can only be in lens barrel
Radial direction moves linearly；
There is top wire hole (5), jackscrew (6) to pass through top wire hole (5), hold out against arc surface tooling (1) on lens barrel ontology (8)；
Arc surface tooling (1) is fitted closely with time frame (9), when adjusting arc surface tooling (1) along the radial direction side of lens barrel by jackscrew (6)
To when moving linearly, arc surface tooling (1) pushes time frame (9) to move linearly along the radial direction of lens barrel.
2. lens barrel according to claim 1, it is characterised in that：Arc surface tooling (1) is equipped with jackscrew auxiliary blind hole (3), top
Silk (6) passes through top wire hole (5) to be inserted into jackscrew auxiliary blind hole (3), holds out against arc surface tooling (1).
3. lens barrel according to claim 2, it is characterised in that：The jackscrew auxiliary blind hole (3) is taper, tapering bottom surface
To match plane with jackscrew (6) end.
4. lens barrel according to claim 3, it is characterised in that：It is equipped on the lens barrel ontology (8) and arc surface tooling (1)
At least one hole for injecting glue (2), the hole for injecting glue (2) on lens barrel ontology (8) are interconnected with the hole for injecting glue (2) on arc surface tooling (1).
5. lens barrel according to claim 4, it is characterised in that：Hole for injecting glue (2) there are four tools on the lens barrel ontology (8),
Positioned at top wire hole (5) surrounding；There are four hole for injecting glue (2) for tool on arc surface tooling (1), are located at jackscrew and assist blind hole (3) surrounding.
6. according to any lens barrels of claim 1-5, it is characterised in that：Further include that setting is auxiliary on lens barrel ontology (8)
Help hole for injecting glue (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746919.0U CN207636831U (en) | 2017-12-14 | 2017-12-14 | A kind of lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746919.0U CN207636831U (en) | 2017-12-14 | 2017-12-14 | A kind of lens barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207636831U true CN207636831U (en) | 2018-07-20 |
Family
ID=62862895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721746919.0U Active CN207636831U (en) | 2017-12-14 | 2017-12-14 | A kind of lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207636831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152913A (en) * | 2017-12-14 | 2018-06-12 | 中国科学院西安光学精密机械研究所 | A kind of method of lens barrel and adjustment primary and secondary mirror concentricity |
-
2017
- 2017-12-14 CN CN201721746919.0U patent/CN207636831U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152913A (en) * | 2017-12-14 | 2018-06-12 | 中国科学院西安光学精密机械研究所 | A kind of method of lens barrel and adjustment primary and secondary mirror concentricity |
| CN108152913B (en) * | 2017-12-14 | 2023-12-08 | 中国科学院西安光学精密机械研究所 | Lens cone and method for adjusting coaxiality of primary lens and secondary lens |
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