CN107526148B - Lens group device - Google Patents
Lens group device Download PDFInfo
- Publication number
- CN107526148B CN107526148B CN201710905526.8A CN201710905526A CN107526148B CN 107526148 B CN107526148 B CN 107526148B CN 201710905526 A CN201710905526 A CN 201710905526A CN 107526148 B CN107526148 B CN 107526148B
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- Prior art keywords
- lens
- flexible
- base
- concave
- assembly
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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
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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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
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
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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
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Abstract
The invention discloses a lens assembly device which comprises a front lens assembly, a concave lens assembly and a rear lens assembly which are sequentially connected, wherein the front lens assembly comprises a front lens, a front lens retaining ring, a first pre-tightening jackscrew and a front lens flexible lens base; the concave lens component comprises a concave lens, a second pre-tightening jackscrew and a concave lens flexible lens base; the rear lens assembly comprises a rear lens, a rear lens baffle ring, a third pre-tightening jackscrew and a rear lens flexible lens seat, the front lens flexible lens seat is connected with the concave lens flexible lens seat through a first fastening screw, and the rear lens flexible lens seat is connected with the concave lens flexible lens seat through a second fastening screw. The lens group device provided by the invention can solve the technical problems of flexible support of the large-aperture lens and assembly and adjustment of the large-aperture lens, the flexible ring and the lens base are designed for each lens, the radial temperature change influence is adapted through the flexible sheet and glue injection, the interval and eccentricity among the lenses are adjusted through adjusting the relation among the lens bases, and the lenses are reduced to be directly assembled and disassembled.
Description
Technical Field
The invention relates to the technical field of telescopes, in particular to a lens group device.
Background
With the increase of the aperture of the telescope and the development of the large-aperture and large-field-of-view optical system, the sizes of the reflectors and the lenses in the terminal equipment are increased, and the supporting and mounting modes of the reflectors and the lenses directly influence the imaging quality of the optical system. The support of the medium-large lens (the caliber is over 300mm) as a key part is always a difficult point, which is mainly reflected in that: the support of the first large lens can only utilize the peripheral edge of the first large lens, and the limited space brings great difficulty to the structural design; secondly, as the aperture of the lens increases, the surface shape precision becomes more and more sensitive to temperature; the mounting of the third large lens group becomes more and more difficult with increasing aperture and weight. Therefore, a reasonable supporting structure and a reasonable mounting technology are particularly important for large lens sets.
For small lenses, the influence of temperature change and gravity on the surface shape precision of the lenses is small, so the use requirements can be met mainly through lens cone guiding and traditional edge pressing, and the mounting mode of the lens is mainly embodied as 'lens cone-lens-spacer ring-lens-pressing ring', the mode has no temperature change adaptability to the radial direction, and the large-caliber lenses are easy to cause stress concentration when the environmental temperature changes to influence the surface shape precision; simultaneously in order to guarantee the interval and the off-centre of lens group, can constantly coping spacer ring thickness, until it meets the demands, but this kind of mode need constantly dismouting lens, not only inefficiency, and the dismouting process causes the cracked of lens easily.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a lens assembly apparatus to achieve the objective of adapting to radial temperature variation and reducing direct lens assembly and disassembly.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a lens assembly apparatus, which is suitable for a large-sized lens assembly and can not only adapt to radial temperature variation effect, but also reduce direct lens assembly and disassembly.
In order to achieve the purpose, the invention provides the following technical scheme:
a lens group device comprises a front lens assembly, a concave lens assembly and a rear lens assembly which are sequentially connected, wherein the front lens assembly comprises a front lens, a front lens retaining ring, a first pre-tightening jackscrew and a front lens flexible lens base, the first pre-tightening jackscrew is arranged on the front lens flexible lens base, the front lens is arranged on the front lens flexible lens base in a built-in mode, glue is injected between the front lens and a flexible sheet on the front lens flexible lens base through a glue injection hole in the front lens flexible lens base, the first pre-tightening jackscrew is adjusted to apply pre-tightening force after glue overflows from the edge of the flexible sheet, and the front lens retaining ring is connected with the front lens flexible lens base and clamps and fixes the front lens; the concave lens component comprises a concave lens, a second pre-tightening jackscrew and a concave lens flexible lens base, the second pre-tightening jackscrew is arranged on the concave lens flexible lens base, the concave lens is arranged on the concave lens flexible lens base, glue is injected between the concave lens and a flexible sheet on the concave lens flexible lens base through a glue injection hole on the concave lens flexible lens base, and the second pre-tightening jackscrew is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet; the rear lens component comprises a rear lens, a rear lens baffle ring, a third pre-tightening jackscrew and a rear lens flexible lens base, the third pre-tightening jackscrew is arranged on the rear lens flexible lens base, the rear lens is arranged on the rear lens flexible lens base in a built-in mode, injecting glue between the rear lens and the flexible sheet on the rear lens flexible lens base through a glue injection hole on the rear lens flexible lens base, adjusting the third pre-tightening jackscrew to apply pre-tightening force after the glue overflows from the edge of the flexible sheet, the rear lens baffle ring is connected with the rear lens flexible lens base and clamps and fixes the rear lens, the front lens flexible lens base is connected with the concave lens flexible lens base through a first fastening screw, the rear lens flexible lens seat is connected with the concave lens flexible lens seat through a second fastening screw, and the rear lens flexible lens seat further comprises a push-pull screw for changing the interval and the eccentricity of the front lens and the concave lens and the interval and the eccentricity of the rear lens and the concave lens.
Preferably, a front spacer is disposed between the front lens and the front lens retainer ring.
Preferably, the front gasket is a teflon gasket.
Preferably, a rear gasket is disposed between the rear lens and the rear lens retainer ring.
Preferably, the rear gasket is a polytetrafluoroethylene gasket.
Preferably, a first gasket is disposed between the front lens flexible lens base and the concave lens flexible lens base and at the first fastening screw.
Preferably, a second gasket is arranged between the rear lens flexible lens base and the concave lens flexible lens base and at the second fastening screw.
The invention provides a lens group device which comprises a front lens assembly, a concave lens assembly and a rear lens assembly which are sequentially connected, wherein the front lens assembly comprises a front lens, a front lens retaining ring, a first pre-tightening jackscrew and a front lens flexible lens base, the first pre-tightening jackscrew is arranged on the front lens flexible lens base, the front lens is arranged on the front lens flexible lens base in a built-in mode, glue is injected between the front lens and a flexible sheet on the front lens flexible lens base through a glue injection hole in the front lens flexible lens base, the first pre-tightening jackscrew is adjusted to apply pre-tightening force after glue overflows from the edge of the flexible sheet, and the front lens retaining ring is connected with the front lens flexible lens base and clamps and fixes the front lens; the concave lens component comprises a concave lens, a second pre-tightening jackscrew and a concave lens flexible lens base, the second pre-tightening jackscrew is arranged on the concave lens flexible lens base, the concave lens is arranged on the concave lens flexible lens base, glue is injected between the concave lens and a flexible sheet on the concave lens flexible lens base through a glue injection hole on the concave lens flexible lens base, and the second pre-tightening jackscrew is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet; the rear lens component comprises a rear lens, a rear lens baffle ring, a third pre-tightening jackscrew and a rear lens flexible lens base, the third pre-tightening jackscrew is arranged on the rear lens flexible lens base, the rear lens is arranged on the rear lens flexible lens base in a built-in mode, injecting glue between the rear lens and the flexible sheet on the rear lens flexible lens base through a glue injection hole on the rear lens flexible lens base, adjusting the third pre-tightening jackscrew to apply pre-tightening force after the glue overflows from the edge of the flexible sheet, the rear lens baffle ring is connected with the rear lens flexible lens base and clamps and fixes the rear lens, the front lens flexible lens base is connected with the concave lens flexible lens base through a first fastening screw, the rear lens flexible lens seat is connected with the concave lens flexible lens seat through a second fastening screw, and the rear lens flexible lens seat further comprises a push-pull screw for changing the interval and the eccentricity of the front lens and the concave lens and the interval and the eccentricity of the rear lens and the concave lens.
The lens group device provided by the invention can solve the technical problems of flexible support of the large-aperture lens and assembly and adjustment of the large-aperture lens group, the flexible ring and the lens base are designed for each lens, radial temperature change influence is adapted through the flexible sheet and glue injection, the interval and eccentricity among the lenses are adjusted through adjusting the relation among the lens bases, the rapid assembly and adjustment of the lens group are realized, and the direct assembly and disassembly of the lenses are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a side cross-sectional view of a lens assembly apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic front view of a lens assembly apparatus according to an embodiment of the present invention;
fig. 3 is a schematic side cross-sectional structural diagram of a front lens assembly according to an embodiment of the present invention.
In the above FIGS. 1-3:
the lens comprises a front lens 1, a front gasket 2, a front lens baffle ring 3, a first pre-tightening jackscrew 4, a front lens flexible lens base 5, a first gasket 6, a concave lens flexible lens base 7, a second pre-tightening jackscrew 8, a concave lens 9, a second gasket 10, a rear lens flexible lens base 11, a third pre-tightening jackscrew 12, a rear lens baffle ring 13, a rear gasket 14, a rear lens 15, a first fastening screw 16, a second fastening screw 17 and a push-pull screw 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, fig. 1 is a schematic side sectional view illustrating a lens assembly apparatus according to an embodiment of the present invention; FIG. 2 is a schematic front view of a lens assembly apparatus according to an embodiment of the present invention; fig. 3 is a schematic side cross-sectional structural diagram of a front lens assembly according to an embodiment of the present invention.
The lens group device provided by the embodiment of the invention comprises a front lens assembly, a concave lens assembly and a rear lens assembly which are sequentially connected, wherein the front lens assembly comprises a front lens 1, a front lens baffle ring 3, a first pre-tightening jackscrew 4 and a front lens flexible lens base 5, the first pre-tightening jackscrew 4 is arranged on the front lens flexible lens base 5, the front lens 1 is arranged on the front lens flexible lens base 5 in a built-in mode, glue is injected between the front lens 1 and a flexible sheet of the front lens flexible lens base 5 through a glue injection hole on the front lens flexible lens base 5, the first pre-tightening jackscrew 4 is adjusted to apply pre-tightening force after glue overflows from the edge of the flexible sheet, and the front lens baffle ring 3 is connected with the front lens flexible lens base 5 and clamps and fixes the front lens 1; the concave lens component comprises a concave lens 9, a second pre-tightening jackscrew 8 and a concave lens flexible lens base 7, the second pre-tightening jackscrew 8 is arranged on the concave lens flexible lens base 7, the concave lens 9 is arranged on the concave lens flexible lens base 7, glue is injected between the concave lens 9 and a flexible sheet on the concave lens flexible lens base 7 through a glue injection hole on the concave lens flexible lens base 7, and the second pre-tightening jackscrew 8 is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet; the rear lens component comprises a rear lens 15, a rear lens baffle ring 13, a third pre-tightening jackscrew 12 and a rear lens flexible lens base 11, the third pre-tightening jackscrew 12 is arranged on the rear lens flexible lens base 11, the rear lens 15 is arranged on the rear lens flexible lens base 11, glue is injected between a rear lens 15 and a flexible sheet on a rear lens flexible lens base 11 through a glue injection hole on the rear lens flexible lens base 11, after the glue overflows from the edge of the flexible sheet, a third pre-tightening jackscrew 12 is adjusted to apply pre-tightening force, a rear lens baffle ring 13 is connected with the rear lens flexible lens base 11 and clamps and fixes the rear lens 15, a front lens flexible lens base 5 is connected with a concave lens flexible lens base 7 through a first fastening screw 16, the rear lens flexible lens base 11 is connected with the concave lens flexible lens base 7 through a second fastening screw 17, and the lens frame further comprises a push-pull screw 18 for changing the intervals and the eccentricities of the front lens 1 and the concave lens 9 and the rear lens 15 and the concave lens 9.
The lens group device provided by the embodiment of the invention can solve the technical problems of flexible support of the large-aperture lens and assembly and adjustment of the large-aperture lens, the flexible sheet and the lens base are designed for each lens, radial temperature change influence is adapted through the flexible sheet and glue injection, the interval and eccentricity among the lenses are adjusted through adjusting the relation among the lens bases, the rapid assembly and adjustment of the lens group are realized, and direct lens assembly and disassembly are reduced. The pre-tightening jackscrew has the advantages that the flexible sheet is in complete contact with the lens during glue injection, firm and reliable bonding is guaranteed, and finally the pre-tightening jackscrew can be taken away.
Wherein, a front gasket 2 is arranged between the front lens 1 and the front lens baffle ring 3. The front gasket 2 is a teflon gasket. A rear spacer 14 is provided between the rear lens 15 and the rear lens retainer ring 13. The back gasket 14 is a teflon gasket. A first gasket 6 is arranged between the front lens flexible lens mount 5 and the concave lens flexible lens mount 7 at the first fastening screw 16. A second gasket 10 is arranged between the rear lens flexible mirror base 11 and the concave lens flexible mirror base 7 and at the second fastening screw 17.
Specifically, when the lens is installed and adjusted, firstly, the lens and the flexible lens base are connected, taking the installation of the front lens assembly as an example, the front lens 1 and the front lens flexible lens base 5 are respectively arranged on the lifting table, the height of the lifting table is adjusted to enable the flexible sheet of the front lens flexible lens base 5 to be located at the mass center of the front lens 1, glue is injected between the front lens 1 and the flexible sheet of the front lens flexible lens base 5 through the glue injection hole of the front lens flexible lens base 5, after glue overflows from the edge of the flexible sheet, the first pre-tightening jackscrew 4 is adjusted to apply a certain pre-tightening force, and finally, the glue is stood to be solidified. The concave lens assembly and the rear lens assembly are mounted in a similar manner and are not described in detail.
After the above-mentioned work is completed, the lens and lens seat are formed into an assembly, namely front lens component, concave lens component and rear lens component, so that the regulation between lenses can be changed into regulation between lens groups. Respectively installing a first gasket 6, a front lens flexible lens seat 5, a second gasket 10 and a rear lens flexible lens seat 11 from two sides of a concave lens flexible lens seat 7, respectively fastening a first fastening screw 16 and a second fastening screw 17, detecting a lens group by using a centering instrument, changing the interval and the eccentricity of a front lens 1 and a concave lens 9 and the interval and the eccentricity of a rear lens 15 and the concave lens 9 by adjusting a push-pull screw, measuring correction when the data meet optical requirements, respectively grinding the first gasket 6 and the second gasket 10, installing again until the requirements are met, finally installing a front lens baffle ring 3 and a rear lens baffle ring 13, respectively installing a front gasket 2 and a rear gasket 14 in order to avoid damaging the lens surface by direct contact of metal and the lens, wherein the front gasket 2 and the rear gasket 14 are both polytetrafluoroethylene gaskets.
The front lens flexible lens base 5, the concave lens flexible lens base 7 and the rear lens flexible lens base 11 can be flange plates, the lens mounting mode of replacing the lens barrel through flange connection greatly reduces the assembling and adjusting difficulty and mounting risk of the large lens group, the quantitative adjustment is controllable, and the lens mounting device is suitable for assembling and adjusting the large lens group in any number.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A lens assembly with a caliber of over 300mm is characterized by comprising a front lens assembly, a concave lens assembly and a rear lens assembly which are connected in sequence,
the front lens assembly comprises a front lens, a front lens retaining ring, a first pre-tightening jackscrew and a front lens flexible lens base, the first pre-tightening jackscrew is arranged on the front lens flexible lens base, the front lens is arranged on the front lens flexible lens base, glue is injected between the front lens and a flexible sheet on the front lens flexible lens base through a glue injection hole on the front lens flexible lens base, the first pre-tightening jackscrew is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet, and the front lens retaining ring is connected with the front lens flexible lens base and clamps and fixes the front lens;
the concave lens component comprises a concave lens, a second pre-tightening jackscrew and a concave lens flexible lens base, the second pre-tightening jackscrew is arranged on the concave lens flexible lens base, the concave lens is arranged on the concave lens flexible lens base, glue is injected between the concave lens and a flexible sheet on the concave lens flexible lens base through a glue injection hole on the concave lens flexible lens base, and the second pre-tightening jackscrew is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet;
the rear lens component comprises a rear lens, a rear lens baffle ring, a third pre-tightening jackscrew and a rear lens flexible lens base, the third pre-tightening jackscrew is arranged on the rear lens flexible lens base, the rear lens is arranged on the rear lens flexible lens base, glue is injected between the rear lens and a flexible sheet on the rear lens flexible lens base through a glue injection hole on the rear lens flexible lens base, the third pre-tightening jackscrew is adjusted to apply pre-tightening force after the glue overflows from the edge of the flexible sheet, the rear lens baffle ring is connected with the rear lens flexible lens base and clamps and fixes the rear lens,
the front lens flexible lens base is connected with the concave lens flexible lens base through a first fastening screw,
the rear lens flexible lens base is connected with the concave lens flexible lens base through a second fastening screw,
further comprising a push-pull screw for changing the interval and eccentricity of the front lens and the concave lens and the rear lens and the concave lens,
a front gasket is arranged between the front lens and the front lens baffle ring,
a rear gasket is arranged between the rear lens and the rear lens baffle ring,
the front gasket is a polytetrafluoroethylene gasket,
the back gasket is a polytetrafluoroethylene gasket,
a first gasket is arranged between the front lens flexible lens base and the concave lens flexible lens base and positioned at the first fastening screw,
a second gasket is arranged between the rear lens flexible lens base and the concave lens flexible lens base and positioned at the second fastening screw,
the radial temperature change influence is adapted through the flexible sheet and the glue injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905526.8A CN107526148B (en) | 2017-09-29 | 2017-09-29 | Lens group device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905526.8A CN107526148B (en) | 2017-09-29 | 2017-09-29 | Lens group device |
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| CN107526148A CN107526148A (en) | 2017-12-29 |
| CN107526148B true CN107526148B (en) | 2020-05-12 |
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| CN201710905526.8A Active CN107526148B (en) | 2017-09-29 | 2017-09-29 | Lens group device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112068277B (en) * | 2020-08-31 | 2021-08-20 | 中国科学院长春光学精密机械与物理研究所 | Multistage flexible supporting structure of large-caliber optical lens |
| CN113391417B (en) * | 2021-05-14 | 2022-09-20 | 中国科学院长春光学精密机械与物理研究所 | Optical element supporting structure |
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| US7535663B2 (en) * | 2004-12-21 | 2009-05-19 | Ionosep X L.L.C. | Optical pickup actuator |
| US20130334400A1 (en) * | 2012-06-18 | 2013-12-19 | Global Microptics Company | Method of making lens modules and the lens module |
| CN103676065B (en) * | 2013-10-31 | 2016-01-06 | 中国科学院上海光学精密机械研究所 | The regulation fixing apparatus of Large Aperture Lenses |
| JP6447159B2 (en) * | 2015-01-20 | 2019-01-09 | コニカミノルタ株式会社 | Lens barrel |
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- 2017-09-29 CN CN201710905526.8A patent/CN107526148B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201344989Y (en) * | 2009-01-07 | 2009-11-11 | 上海微电子装备有限公司 | An optical lens and lens group |
| CN102375200A (en) * | 2010-08-18 | 2012-03-14 | 上海微电子装备有限公司 | Radial adjusting device of adjustable optical element |
| CN202837649U (en) * | 2012-08-27 | 2013-03-27 | 福建福光数码科技有限公司 | High speed shooting camera lens |
| CN202870368U (en) * | 2012-09-10 | 2013-04-10 | 上海微电子装备有限公司 | An auxiliary fixing device and a fixing system of a photolithographic objective lens glass |
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| CN107526148A (en) | 2017-12-29 |
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