CN212675243U - Large-light-transmission high-resolution day and night dual-purpose lens - Google Patents
Large-light-transmission high-resolution day and night dual-purpose lens Download PDFInfo
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- CN212675243U CN212675243U CN202021237661.3U CN202021237661U CN212675243U CN 212675243 U CN212675243 U CN 212675243U CN 202021237661 U CN202021237661 U CN 202021237661U CN 212675243 U CN212675243 U CN 212675243U
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- optical drive
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 46
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- 241001330002 Bambuseae Species 0.000 claims description 46
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 46
- 239000011425 bamboo Substances 0.000 claims description 46
- 238000004026 adhesive bonding Methods 0.000 claims description 21
- 230000005499 meniscus Effects 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 125000005647 linker group Chemical group 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 238000003384 imaging method Methods 0.000 abstract description 11
- 206010010071 Coma Diseases 0.000 abstract description 2
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- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004297 night vision Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a big dual-purpose camera lens of light transmittance high resolution ratio day night, including setting up preceding group, two filter disc CD-ROM drives, the rear mirror group that sets gradually along light incident direction in the camera lens structure, preceding group is equipped with by preceding to the back in proper order: the first cemented group that first biconvex lens and first pair concave lens are bound, the second cemented group that second biconvex lens and second pair concave lens are bound, back mirror group is equipped with by preceding to the back in proper order: the utility model discloses rationally optimize optical system's aberration and distortion, rectified optical system's chromatic dispersion and coma to realize optical system's big light passing, high resolution characteristics; the optical path system adopts a whole group moving mode to carry out optical focusing, and 1.5m short-distance high-definition imaging is realized.
Description
Technical Field
The utility model relates to a big dual-purpose camera lens of light-passing high resolution ratio day night.
Background
With the rapid development of the security monitoring market, the market puts forward greater performance requirements on security lenses, and the large light passing and high resolution ratio gradually become market standard; the problem that the edge imaging resolution ratio is low commonly exists in large-light-transmission lenses in the existing market, unified and stable imaging quality cannot be formed, and therefore along with the continuous increase of the requirements of customers on the quality of the lenses, the existing market needs a security lens which is larger in light transmission amount, clearer in imaging and more stable in quality.
Disclosure of Invention
The utility model provides a big dual-purpose camera lens of light-passing high resolution ratio day night solves big light-passing lens ubiquitous edge imaging resolution ratio low problem.
The utility model provides a scheme that technical problem adopted is, a two-purpose camera lens of big light-passing high resolution ratio day night: including setting up preceding mirror group, two filter disc CD-ROM, the rear mirror group that sets gradually along light incidence direction in the camera lens structure, preceding mirror group by preceding being equipped with to the back in proper order: the rear lens group is sequentially provided with a first cementing group bonded by a first biconvex lens and a first biconcave lens, a second cementing group bonded by a second biconvex lens and a second biconcave lens from front to back: the third double-concave lens and the third double-convex lens are bonded to form a third bonding group, the fourth double-convex lens, the fifth double-convex lens and the fourth double-concave lens are bonded to form a fourth bonding group, and the positive meniscus lens.
Further, the air space between the first gluing group and the second gluing group is 0.1 mm.
Further, the air space between the front lens group and the rear lens group is 9.383mm, the air space between the front lens group and the double-filter optical drive is 3.159mm, and the air space between the double-filter optical drive and the rear lens group is 6.224 mm.
Further, the air space between the third glue group and the fourth biconvex lens is 5.759mm, the air space between the fourth biconvex lens and the fourth glue group is 0.1mm, and the air space between the fourth glue group and the positive meniscus lens is 2.61 mm.
Further, the camera lens structure including the preceding group section of thick bamboo that is used for installing the preceding group lens, preceding group section of thick bamboo rear side links to each other with a main section of thick bamboo, is provided with the back group section of thick bamboo that is used for installing back group lens in this main section of thick bamboo, and back group section of thick bamboo cooperatees and carries out the screw-thread fastening through 2 first countersunk screw with preceding group section of thick bamboo, set up two filter optical drive mechanisms on the main section of thick bamboo middle part, be provided with focusing mechanism on the main section of thick bamboo rear end, a flange is established to main section of thick bamboo rear end overcoat, and this flange cooperates and carries out the screw-thread fastening through second countersunk screw and main section of thick bamboo.
Furthermore, first gluing group, second gluing group set gradually in the section of thick bamboo of group in front from the front backward, install the preceding clamping ring that is used for compressing tightly first biconvex lens front side in the section of thick bamboo of group in front, be provided with spacer A between first gluing group and the second gluing group.
Further, third cementing group, fourth biconvex lens and fourth cementing group set gradually backward in the back group section of thick bamboo from the front, be provided with spacer B between third cementing group and the fourth biconvex lens, be provided with spacer C between fourth biconvex lens and the fourth cementing group, positive meniscus lens set up in accepting the seat, accept the seat rear end and be equipped with the back clamping ring that is used for compressing tightly positive meniscus lens rear surface outer fringe, a rear group section of thick bamboo rear side endotheca is equipped with one and accepts the seat, accepts the seat and assembles with positive meniscus lens through threaded connection back clamping ring.
Further, two filter optical drive mechanisms are including the two filter optical drives of main section of thick bamboo middle part are arranged in to the cover, main section of thick bamboo middle part is provided with the optical drive spacing groove between preceding mirror group and back mirror group, and two filter optical drives insert to fix at the optical drive spacing groove, and two filter optical drives upper portion covers and is equipped with the optical drive dustcoat, and the optical drive dustcoat spiral shell is fixed in main section of thick bamboo periphery.
Furthermore, the focusing mechanism comprises a focusing cam arranged on the outer periphery of the rear side of the main barrel, the focusing cam is sleeved outside the rear assembly barrel, double chutes are arranged on the outer periphery of the focusing cam, nylon guide nails used for locking and limiting the rear lens barrel in the double chutes are arranged on the outer periphery of the main barrel, cam sleeve rings are sleeved on the outer periphery of the focusing cam, and focusing fastening screws used for locking the focusing cam are screwed on the main barrel in the radial direction.
Compared with the prior art, the utility model discloses following beneficial effect has: the optical path system adopts the whole group moving mode to carry out optical focusing, and realizes 1.5m close-range high-definition imaging.
Drawings
The following describes the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the light path of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic diagram of a dual-filter optical drive structure;
fig. 5 is a graph of MTF;
figure 6 the utility model discloses distortion curve graph.
In the figure: 1-a first lenticular lens; 2-a first biconcave lens; 3-a second lenticular lens; 4-a second biconcave lens; 5-spacer bush A; 6-front pressure ring; 7-a third biconcave lens; 8-a third biconvex lens; 9-spacer bush B; 10-a fourth lenticular lens; 11-spacer C; 12-a fifth lenticular lens; 13-a fourth biconcave lens; 14-a positive meniscus lens; 15-rear compression ring; 16-front group cylinder; 17-a primary drum; 18-a main cartridge housing; 20-CD driver outer cover; 21-double filter disc optical drive; 22-rear group cylinder; 23-a first countersunk screw; 24-a focusing cam; 25-focusing locking nails; 26-nylon guide pins; 27-cam chute; 29-a cam collar; 30-a flange seat; 32-a bearing seat; 33-imaging surface; 34-an infrared cut filter; 35-spectral full transmission filter.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 to 4, a large-light-transmission high-resolution day and night dual-purpose lens: including setting up preceding mirror group, two filter disc CD-ROM, the rear mirror group that sets gradually along light incidence direction in the camera lens structure, preceding mirror group by preceding being equipped with to the back in proper order: the rear lens group is sequentially provided with a first cementing group bonded by a first biconvex lens and a first biconcave lens, a second cementing group bonded by a second biconvex lens and a second biconcave lens from front to back: the third double-concave lens and the third double-convex lens are bonded to form a third bonding group, the fourth double-convex lens, the fifth double-convex lens and the fourth double-concave lens are bonded to form a fourth bonding group, and the positive meniscus lens.
In this embodiment, the air gap between the first glue set and the second glue set is 0.1 mm.
In this embodiment, the air space between the front lens group and the rear lens group is 9.383mm, the air space between the front lens group and the dual-filter optical drive is 3.159mm, the air space between the dual-filter optical drive and the rear lens group is 6.224mm, and the air distance between the rear lens group and the image plane is 13.152-13.557 mm.
In this embodiment, the air space between the third glue group and the fourth biconvex lens is 5.759mm, the air space between the fourth biconvex lens and the fourth glue group is 0.1mm, and the air space between the fourth glue group and the positive meniscus lens is 2.61 mm.
In this embodiment, the lens structure including the preceding group section of thick bamboo that is used for installing the preceding group lens, preceding group section of thick bamboo rear side links to each other with a main section of thick bamboo, is provided with the back group section of thick bamboo that is used for installing back group lens in this main section of thick bamboo, and back group section of thick bamboo cooperatees and carries out the screw-thread fastening through 2 first countersunk screw with preceding group section of thick bamboo, set up two filter optical drive mechanisms on the main section of thick bamboo middle part, be provided with focusing mechanism on the main section of thick bamboo rear end, a flange is established to main section of thick bamboo rear end overcoat, this flange cooperates and carries out the screw-thread fastening through second countersunk screw and main section of thick bamboo.
Furthermore, first gluing group, second gluing group set gradually in the section of thick bamboo of group in front from the front backward, install the preceding clamping ring that is used for compressing tightly first biconvex lens front side in the section of thick bamboo of group in front, be provided with spacer A between first gluing group and the second gluing group.
In this embodiment, third cementing group, fourth biconvex lens and fourth cementing group set gradually backward in the back group section of thick bamboo from the front, be provided with spacer B between third cementing group and the fourth biconvex lens, be provided with spacer C between fourth biconvex lens and the fourth cementing group, positive meniscus lens set up in accepting the seat, accept the seat rear end and be equipped with the back clamping ring that is used for compressing tightly positive meniscus lens rear surface outer fringe, a back group section of thick bamboo rear side endotheca is equipped with one and accepts the seat, accepts the seat and assembles with positive meniscus lens through threaded connection back clamping ring.
In this embodiment, the front compression ring is used for compressing the outer edge of the lens, so as to limit the front lens group a to make linear translation in the optical axis direction, thereby realizing the reliability and stability of assembly, and the spacer A, B, C is used for bearing the lenses; and the bearing part is designed into a plane bearing or a right-angle bearing, so that the stability, the coaxiality and the tightness of the assembly are enhanced.
In this embodiment, the dual-filter optical drive mechanism includes a dual-filter optical drive sleeved in the middle of a main barrel, an optical drive limiting groove is arranged in the middle of the main barrel between a front lens group and a rear lens group, the dual-filter optical drive is inserted into and screwed in the optical drive limiting groove, an optical drive housing covers the upper portion of the dual-filter optical drive, the optical drive housing is screwed on the periphery of the main barrel, and the dual-filter optical drive is a dual-filter combination of an infrared cut-off filter and a spectral full-transmission filter;
the optical drive outer cover is used for wrapping the double-filter optical drive, so that the double-filter optical drive is not exposed in the air, the service life of the optical drive is prolonged, and the reliability of the performance of the lens is ensured.
In this embodiment, the focusing mechanism includes a focusing cam disposed on the outer circumference of the rear side of the main barrel, the outer circumference thread of the rear end of the main barrel forms a transmission fit with the thread of the inner wall of the front end of the focusing cam, the focusing cam is sleeved outside the main barrel, a double chute is disposed on the outer circumference of the focusing cam, a nylon guide pin for locking and limiting the rear lens barrel in the double chute is disposed on the outer circumference of the main barrel, a cam sleeve ring is further screwed and sleeved on the outer circumference of the focusing cam, and a focusing fastening screw for locking the focusing cam is screwed and disposed on the main barrel in the radial direction;
the cam double-chute transmission mode drives the whole optical system to move along the optical axis direction and perform optical focusing through the matching transmission of the nylon guide pin and the chute, so that the focusing is more exquisite and the use is more flexible; the focusing locking nail is locked on the screw hole of the main barrel through threads and acts on the focusing cam to fix the focusing locking nail, so that the purpose of fixing the integrated barrel assembly is achieved.
In this embodiment, in use: when light is incident, the light path sequentially enters the first gluing group, the second gluing group, the third gluing group, the fourth biconvex lens, the fourth gluing group and the positive meniscus lens, imaging is finally carried out on an image plane, under the condition that the light is sufficient, the infrared cut-off filter on the double-filter optical drive works, the camera lens shooting is clearer, the color restoration of the camera photosensitive element is more real, under the low-light environment, the double-filter optical drive changes the filter, the filter is changed into the spectrum full-transmission filter to work, the camera lens shooting keeps consistent definition, and all light transmitted by the camera photosensitive element is fully utilized, so that the low-light performance is improved.
The optical path system utilizes six groups of ten glass spherical lenses to combine and adopts strict lens material collocation, and two materials with large refractive index difference are selected for gluing, so that the aberration and distortion of the optical system are reasonably optimized, the dispersion and coma of the optical system are corrected, and the night vision effect is further improved; thereby realizing the characteristics of large light transmission and high resolution of the optical system; as shown in fig. 5-6, the central MTF value 150lp/mm of the lens in the long-distance object distance imaging is more than or equal to 0.5, the edge MTF value 150lp/mm is more than or equal to 0.15, and the whole imaging is smoother; and the distortion is less than 0.8%.
The utility model discloses lens parameter table:
the utility model discloses the technical indicator who realizes as follows:
target surface size: 1 ";
focal length: 35mm plus or minus 5 percent;
③F NO.：F1.55；
imaging distance: 1500 mm-infinity mm;
a zooming/focusing mode: manually focusing;
sixthly, the external dimension is as follows: phi 46.0mm by 67.1 mm.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the orientation or positional relationship indicated in any of the above-mentioned technical solutions of the present disclosure for indicating positional relationship, such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of describing the present disclosure, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present disclosure, and the term used for indicating shape applied in any of the above-mentioned technical solutions of the present disclosure includes a shape similar, analogous or approximate thereto unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (9)
1. A big dual-purpose camera lens of high resolution day night that passes through, its characterized in that: including setting up preceding mirror group, two filter disc CD-ROM, the rear mirror group that sets gradually along light incidence direction in the camera lens structure, preceding mirror group by preceding being equipped with to the back in proper order: the rear lens group is sequentially provided with a first cementing group bonded by a first biconvex lens and a first biconcave lens, a second cementing group bonded by a second biconvex lens and a second biconcave lens from front to back: the third double-concave lens and the third double-convex lens are bonded to form a third bonding group, the fourth double-convex lens, the fifth double-convex lens and the fourth double-concave lens are bonded to form a fourth bonding group, and the positive meniscus lens.
2. A large-pass high-resolution day and night lens as claimed in claim 1, wherein: the air space between the first gluing group and the second gluing group is 0.1 mm.
3. A large-pass high-resolution day and night lens as claimed in claim 2, wherein: the air space between the front lens group and the rear lens group is 9.383mm, the air space between the front lens group and the double-filter optical drive is 3.159mm, and the air space between the double-filter optical drive and the rear lens group is 6.224 mm.
4. A large-pass high-resolution day and night lens as claimed in claim 3, wherein: the air space between the third glue group and the fourth biconvex lens is 5.759mm, the air space between the fourth biconvex lens and the fourth glue group is 0.1mm, and the air space between the fourth glue group and the positive meniscus lens is 2.61 mm.
5. The large-pass high-resolution day and night lens according to claim 4, wherein: the lens structure including the preceding group section of thick bamboo that is used for installing the preceding group lens, preceding group section of thick bamboo rear side links to each other with a main section of thick bamboo, is provided with the back group section of thick bamboo that is used for installing the back group lens in this main section of thick bamboo, and the back group section of thick bamboo cooperates and carries out the screw-thread fastening through 2 first countersunk screw and preceding group section of thick bamboo, set up two filter optical drive mechanisms on the main section of thick bamboo middle part, be provided with focusing mechanism on the main section of thick bamboo rear end, a flange is established to main section of thick bamboo rear end overcoat, this flange cooperates and carries out the screw-thread fastening through second countersunk screw and main section of thick bamboo.
6. A large-pass high-resolution day and night lens as claimed in claim 5, wherein: the first gluing set and the second gluing set are sequentially arranged in a front set cylinder from front to back, a front pressing ring used for pressing the front side of the first biconvex lens is installed in the front set cylinder, and a spacer bush A is arranged between the first gluing set and the second gluing set.
7. A large-pass high-resolution day and night lens as claimed in claim 6, wherein: third cementing group, fourth biconvex lens and fourth cementing group set gradually backward in the back group section of thick bamboo from the front, be provided with spacer B between third cementing group and the fourth biconvex lens, be provided with spacer C between fourth biconvex lens and the fourth cementing group, positive meniscus lens set up in accepting the seat, accept the seat rear end and be equipped with the back clamping ring that is used for compressing tightly positive meniscus lens rear surface outer fringe, a back group section of thick bamboo rear side endotheca is equipped with and accepts the seat, accepts the seat and assembles through threaded connection back clamping ring and positive meniscus lens.
8. A large-pass high-resolution day and night lens as claimed in claim 7, wherein: the double-filter optical drive mechanism comprises a double-filter optical drive sleeved in the middle of a main barrel, wherein an optical drive limiting groove is formed in the middle of the main barrel between a front lens group and a rear lens group, the double-filter optical drive is inserted and fixed in the optical drive limiting groove, an optical drive outer cover is covered on the upper portion of the double-filter optical drive, and the optical drive outer cover is screwed on the periphery of the main barrel.
9. A large-pass high-resolution day and night lens as claimed in claim 8, wherein: the focusing mechanism comprises a focusing cam arranged on the outer periphery of the rear side of the main barrel, the focusing cam is sleeved outside the rear assembly barrel, double chutes are arranged on the outer periphery of the focusing cam, nylon guide nails used for locking and limiting the rear lens barrel in the double chutes are arranged on the outer periphery of the main barrel, cam sleeve rings are further sleeved on the outer periphery of the focusing cam, and focusing fastening screws used for locking the focusing cam are screwed on the main barrel in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021237661.3U CN212675243U (en) | 2020-06-30 | 2020-06-30 | Large-light-transmission high-resolution day and night dual-purpose lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021237661.3U CN212675243U (en) | 2020-06-30 | 2020-06-30 | Large-light-transmission high-resolution day and night dual-purpose lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212675243U true CN212675243U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021237661.3U Withdrawn - After Issue CN212675243U (en) | 2020-06-30 | 2020-06-30 | Large-light-transmission high-resolution day and night dual-purpose lens |
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| CN (1) | CN212675243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722346A (en) * | 2020-06-30 | 2020-09-29 | 福建福光天瞳光学有限公司 | Large-light-transmission high-resolution day and night dual-purpose lens and working method |
-
2020
- 2020-06-30 CN CN202021237661.3U patent/CN212675243U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722346A (en) * | 2020-06-30 | 2020-09-29 | 福建福光天瞳光学有限公司 | Large-light-transmission high-resolution day and night dual-purpose lens and working method |
| CN111722346B (en) * | 2020-06-30 | 2024-04-16 | 福建福光天瞳光学有限公司 | Big-light-transmission high-resolution day and night dual-purpose lens and working method |
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