CN116165782B - 30 times Gao Qingchang focus continuous zoom lens with fog penetrating function - Google Patents
30 times Gao Qingchang focus continuous zoom lens with fog penetrating function Download PDFInfo
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- CN116165782B CN116165782B CN202211669855.4A CN202211669855A CN116165782B CN 116165782 B CN116165782 B CN 116165782B CN 202211669855 A CN202211669855 A CN 202211669855A CN 116165782 B CN116165782 B CN 116165782B
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
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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
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- 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
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
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- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention relates to a 30 times Gao Qingchang focus continuous zoom lens with fog penetration, which comprises a front fixed lens group, a zoom lens group, a compensation lens group, a variable diaphragm and a rear fixed lens group, wherein the front fixed lens group comprises a first gluing group, a second gluing group and a positive crescent lens, wherein the first gluing group is closely connected with a negative crescent lens A and a biconvex lens B, the second gluing group is closely connected with a negative crescent lens and a positive crescent lens; the zoom lens group comprises a negative crescent lens, a biconcave lens and a third gluing group which is closely connected with the biconvex lens H; the compensation lens group comprises a biconvex lens, a negative crescent lens, a fourth gluing group closely connected with the biconvex lens and the biconvex lens; the rear fixed lens group comprises a fifth gluing group, a sixth gluing group, wherein the fifth gluing group is formed by closely connecting a negative crescent lens, a positive crescent lens, a biconcave lens and a biconvex lens, and the sixth gluing group is formed by closely connecting the negative crescent lens, the biconvex lens and the negative crescent lens. The method realizes 30 times continuous zooming, can search and track long-short distance and high-speed moving targets, can be applied to demand scenes such as remote sensing, early warning, reconnaissance, sighting, imaging guidance and the like, and widens application scenes.
Description
Technical field:
the invention relates to a 30 times Gao Qingchang focus continuous zoom lens with fog penetration.
The background technology is as follows:
in the visible light imaging system, the long-focus fog-penetrating continuous zoom optical lens with a large zoom ratio has greater advantages in practical application scenes such as remote sensing, early warning, reconnaissance, sighting, imaging guidance and the like compared with the traditional zoom optical lens. The target in a large space range can be searched in the short focus, and the searched target can be detected, identified, tracked and aimed in the long focus; meanwhile, the fog-penetrating function is provided, so that the fog-penetrating type automobile seat can meet the use requirements in severe environments. However, the zoom range of the existing long-focus fog-penetrating continuous-zoom optical lens is not ideal enough, and the application scene of the long-focus fog-penetrating continuous-zoom optical lens is limited. In view of this, the present invention has been developed.
The invention comprises the following steps:
the invention aims at improving the problems in the prior art, namely the technical problem to be solved by the invention is to provide the 30-time Gao Qingchang-focus continuous zoom lens with fog penetration, which is reasonable in design, realizes 30-time continuous zooming and widens the application scene.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the optical system of the lens comprises a front fixed lens group, a zoom lens group, a compensation lens group, a variable diaphragm, a rear fixed lens group and an optical filter which are sequentially arranged from left to right along the incidence direction of light, wherein the front fixed lens group comprises a first gluing group, a second gluing group and a positive moon tooth lens E, wherein the first gluing group is closely connected with a negative crescent lens A and a biconvex lens B, the second gluing group is closely connected with a negative crescent lens C and a positive moon tooth lens D, and the second gluing group is closely connected with a positive moon tooth lens E; the zoom lens group comprises a negative crescent lens F, a biconcave lens G, a third gluing group closely connected with the biconvex lens H and a biconcave lens I which are sequentially arranged from left to right; the compensation lens group comprises a biconvex lens J, a negative crescent lens K, a fourth gluing group closely connected with the biconvex lens L and a biconvex lens M which are sequentially arranged from left to right; the rear fixed lens group comprises a negative crescent lens N, a positive crescent lens O, a biconcave lens P, a fifth gluing group, a negative crescent lens R, a biconvex lens S and a sixth gluing group, wherein the negative crescent lens N, the positive crescent lens O, the biconcave lens P and the biconvex lens Q are tightly connected in sequence from left to right.
Further, the air interval between the front fixed lens group and the variable-magnification lens group is 4.5mm-55.0mm, the air interval between the variable-magnification lens group and the compensation lens group is 82.6mm-2.0mm, and the air interval between the compensation lens group and the rear fixed lens group is 4.5mm-34.6mm.
Further, the air interval between the first bonding group and the second bonding group is 0.2mm, and the air interval between the second bonding group and the orthodontic lens E is 0.2mm; the air interval between the negative crescent lens F and the third gluing group is 2.5mm, and the air interval between the third gluing group and the biconcave lens I is 1.0mm; the air interval between the biconvex lens J and the fourth bonding group is 0.2mm, and the air interval between the fourth bonding group and the biconvex lens M is 0.2mm; the air interval between the negative crescent lens N and the positive crescent lens O is 0.2mm, the air interval between the positive crescent lens O and the fifth bonding group is 2.5mm, the air interval between the fifth bonding group and the negative crescent lens R is 0.2mm, and the air interval between the negative crescent lens R and the sixth bonding group is 10.7mm.
Furthermore, the negative crescent lens A, the negative crescent lens C, the positive crescent lens D, the positive crescent lens E, the negative crescent lens F, the negative crescent lens K, the positive crescent lens O and the negative crescent lens R are all made of ultra-low dispersion optical glass.
Further, the lens is sequentially provided with a focusing main lens barrel, a main lens barrel and a diaphragm seat from left to right, a front group lens barrel is arranged in the focusing main lens barrel, a zoom sliding frame and a compensation sliding frame are arranged in the main lens barrel, and the zoom sliding frame and the compensation sliding frame are respectively provided with a zoom lens barrel and a compensation lens barrel; the front fixed lens group, the variable-magnification lens group, the compensation lens group and the rear fixed lens group are respectively arranged on the front lens barrel, the variable-magnification lens barrel, the compensation lens barrel and the diaphragm seat.
Further, the lens further comprises an electric focusing mechanism, an electric zooming mechanism, an electric dimming mechanism, an electric fog penetrating switching mechanism and a high-definition CMOS detector assembly, wherein the electric focusing mechanism adopts a front fixed lens group as a focusing moving group; the electric zooming mechanism respectively drives the zoom lens group and the compensation lens group to do linear reciprocating motion through the zoom sliding frame and the compensation sliding frame so as to complete continuous zooming switching of the lens; the electric dimming mechanism drives a diaphragm sheet of the variable diaphragm to do rotary motion; the electric fog-penetrating switching mechanism is connected with the diaphragm seat and controls the optical filter turntable to rotate; the high-definition CMOS detector assembly is arranged on the electric fog-penetrating switching mechanism.
Compared with the prior art, the invention has the following effects: the invention has reasonable design, realizes the continuous zooming of the focal length of 14-420mm, can search and track targets such as long and short distances, high-speed movement and the like, and can be applied to the demand scenes such as remote sensing, early warning, reconnaissance, sight, imaging guidance and the like; the fog-penetrating and laser-penetrating 1064nm band filter is arranged at the rear end of the lens, so that the lens can adapt to the use requirements in severe environments, and meanwhile, the application scene is widened.
Description of the drawings:
FIG. 1 is a schematic view of an optical structure of a lens according to an embodiment of the present invention;
FIG. 2 is a schematic view of a mechanical structure of a lens according to an embodiment of the present invention;
FIG. 3 is a schematic view of an appearance structure of a lens according to an embodiment of the present invention;
FIG. 4 is a short focal MTF diagram of a lens in an embodiment of the present invention;
FIG. 5 is a tele MTF diagram of a lens in an embodiment of the present invention;
FIG. 6 is a schematic view of an electric focus adjustment mechanism according to an embodiment of the present invention;
FIG. 7 is a second schematic view of an electric focusing mechanism according to an embodiment of the present invention;
FIG. 8 is a schematic view of the electric zoom mechanism according to an embodiment of the present invention;
FIG. 9 is a second schematic diagram of the electric zoom mechanism according to the embodiment of the present invention;
fig. 10 is a schematic diagram of a construction of an electric dimming mechanism according to an embodiment of the present invention;
fig. 11 is a second schematic diagram of the electric dimming mechanism according to the embodiment of the present invention;
FIG. 12 is a schematic diagram of a first embodiment of an electric mist-permeable switching mechanism;
fig. 13 is a second schematic structural view of the electric mist-permeable switching mechanism in the embodiment of the invention.
In fig. 1:
11-front fixed mirror group; 111-negative crescent lens A; 112-a lenticular lens B; 113-negative crescent lens C; 114-an orthodontic lens D; 115-an orthodontic lens E; 12-a variable-magnification lens group; 121-negative crescent lens F; 122-biconcave lens G; 123-a lenticular lens H; 124-biconcave lens I; 13-compensating lens group; 131—a lenticular lens J; 132-negative crescent lens K; 133-a lenticular lens L; 134-lenticular lens M; 14-variable diaphragm; 15-a rear group fixed lens group; 151-negative crescent lens N; 152-orthodontic lens O; 153-biconcave lens P; 154-lenticular lens Q; 155-negative crescent lens R; 156-lenticular lens S; 157-negative crescent lens T; 16-an optical filter;
in fig. 2-3:
17-an electric focusing mechanism; 18-an electric zoom mechanism; 19-an electric dimming mechanism; 20-an electric fog-penetrating switching mechanism; 201-a high definition CMOS detector assembly;
in fig. 6-13:
21-focusing lens group; 22-focusing cam pressing ring; 23-focusing guide pin assembly; 24-focusing cam; 25-focusing a main barrel; 26-focusing micro-switch; 27-focusing limit nails; 28-focusing motor gear; 29-focusing motor; 210-focusing potentiometer gear; 211-focusing potentiometer; 31-a zoom lens group; 32-zoom carriage; 33-front row steel balls; 34-a variable-magnification guide pin assembly; 35-a zoom cam; 36-main barrel; 37-rear row steel balls; 38-a zoom cam ring; 39-compensating lens group; 310-compensating carriage; 311-compensating guide pin assembly; 312-zooming micro-switch; 313-zoom limit nails; 314-zoom potentiometer; 315-a variable-magnification motor; 316-zoom potentiometer gear; 317-a variable-magnification motor gear; 41-diaphragm seat; 42-diaphragm moving ring pressing ring; 43-diaphragm ring; 44-diaphragm motor gear; 45-diaphragm pulling nails; 46-diaphragm adjusting ring pressing ring; 47-diaphragm adjusting ring; 48-diaphragm sheet assembly; 49-diaphragm micro switch; 410-diaphragm spacing nails; 411-diaphragm motor; 51-rear set of connection plates; 52-a visible light filter; 53-an optical filter turntable shaft; 54-filter hall element plates; 55-a near infrared filter; 56-an optical filter turntable; 57-filter motor gear; 58-filter passing wheel; 59-a filter motor; 510-a filter magnet; 511-laser filter.
The specific embodiment is as follows:
the invention will be described in further detail with reference to the drawings and the detailed description.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Embodiment one: as shown in fig. 1, the invention provides a 30 times Gao Qingchang focus continuous zoom lens with fog, an optical system of the lens comprises a front fixed lens group 11, a variable magnification lens group 12, a compensating lens group 13, a variable diaphragm 14, a rear fixed lens group 15 and a light filter 16 which are sequentially arranged from left to right along the incidence direction of light, wherein the front fixed lens group 11 comprises a first bonding group, a second bonding group and a positive moon lens E115, wherein the first bonding group is formed by closely bonding a negative crescent lens a111 and a biconvex lens B112, the second bonding group is formed by closely bonding a negative crescent lens C113 and a positive moon lens D114, and the first bonding group is formed by closely bonding a negative crescent lens a111 and a biconvex lens B112; the zoom lens group 12 comprises a negative crescent lens F121, a biconcave lens G122, a third gluing group closely connected with a biconvex lens H123 and a biconcave lens I124 which are sequentially arranged from left to right; the compensation lens group 13 comprises a biconvex lens J131, a negative crescent lens K132, a fourth gluing group in close contact with the biconvex lens L133 and a biconvex lens M134 which are sequentially arranged from left to right; the rear fixed lens group 15 includes a fifth bonding group in which a negative crescent lens N151, a positive crescent lens O152, a biconcave lens P153, and a biconvex lens Q154 are bonded, a sixth bonding group in which a negative crescent lens R155, a biconvex lens S156, and a negative crescent lens T157 are bonded, which are sequentially arranged from left to right.
In this embodiment, the air space between the front fixed lens group 11 and the variable magnification lens group 12 is 4.5mm-55.0mm, the air space between the variable magnification lens group 12 and the compensation lens group 13 is 82.6mm-2.0mm, and the air space between the compensation lens group 13 and the rear fixed lens group 15 is 4.5mm-34.6mm.
In this embodiment, the air space between the first bonding group and the second bonding group is 0.2mm, and the air space between the second bonding group and the orthodontic lens E is 0.2mm; the air interval between the negative crescent lens F and the third gluing group is 2.5mm, and the air interval between the third gluing group and the biconcave lens I is 1.0mm; the air interval between the biconvex lens J and the fourth bonding group is 0.2mm, and the air interval between the fourth bonding group and the biconvex lens M is 0.2mm; the air interval between the negative crescent lens N and the positive crescent lens O is 0.2mm, the air interval between the positive crescent lens O and the fifth bonding group is 2.5mm, the air interval between the fifth bonding group and the negative crescent lens R is 0.2mm, and the air interval between the negative crescent lens R and the sixth bonding group is 10.7mm.
In this embodiment, the negative crescent lens a, the negative crescent lens C, the positive crescent lens D, the positive crescent lens E, the negative crescent lens F, the negative crescent lens K, the positive crescent lens O, and the negative crescent lens R are all made of ultra-low dispersion optical glass. By selecting the ultra-low dispersion optical glass as the positive lens material, the chromatic aberration of the system is reduced, and the resolution of the system is improved.
The optical system formed by the lens group achieves the following optical indexes:
focal length: f 'min=14mm, f' max=420 mm;
relative pore diameter D/f': 1/4.5 to 1/6;
the angle of view is 26.8 degrees multiplied by 15.26 degrees to 0.91 degrees multiplied by 0.51 degrees;
the optical total length Sigma L is less than or equal to 200mm;
the zoom stroke is less than or equal to 50.4929mm;
transmission spectrum of color filter: mist permeation is 750-900 nm, and laser is 1064nm.
In this embodiment, in the optical design, the front fixed lens group is complicated, a positive lens is added, and ED (ultra-low dispersion) optical glass is selected, so that the focal power bearing capacity of the front fixed group with the highest on-axis light is improved, the aberrations such as the secondary spectrum of the optical lens are effectively reduced, the lens can image in a wide spectrum range, the resolution is obviously improved, and the lens can be matched with a high-definition CMOS detector.
In this embodiment, when imaging: the light rays sequentially pass through the first bonding group, the second bonding group, the positive crescent lens E114, the negative crescent lens F121, the third bonding group, the biconcave lens I124, the biconvex lens J131, the fourth bonding group, the biconvex lens M134, the negative crescent lens N151, the positive crescent lens O152, the fifth bonding group, the negative crescent lens R155, the sixth bonding group and the optical filter 16 from left to right, and then are imaged.
In this embodiment, the lens parameters of the front fixed lens group 11, the variable magnification lens group 12, the compensation lens group 13 and the rear fixed lens group 15 are shown in table 1 below.
TABLE 1
Embodiment two: as shown in fig. 2-3, the mechanical structure of the lens is supplemented on the basis of the first embodiment, specifically: the lens is sequentially provided with a focusing main lens barrel, a main lens barrel and a diaphragm seat from left to right, a front group lens barrel is arranged in the focusing main lens barrel, a zoom sliding frame and a compensation sliding frame are arranged in the main lens barrel, and the zoom sliding frame and the compensation sliding frame are respectively provided with a zoom lens barrel and a compensation lens barrel; the front fixed lens group, the variable-magnification lens group, the compensation lens group and the rear fixed lens group are respectively arranged on the front lens barrel, the variable-magnification lens barrel, the compensation lens barrel and the diaphragm seat.
In this embodiment, the lens further includes an electric focusing mechanism 17, an electric zooming mechanism 18, an electric dimming mechanism 19, an electric fog-penetrating switching mechanism 20, and a high-definition CMOS detector assembly 201, where the electric focusing mechanism uses a front fixed lens group as a focusing moving group; the electric zooming mechanism respectively drives the zoom lens group and the compensation lens group to do linear reciprocating motion through the zoom sliding frame and the compensation sliding frame so as to complete continuous zooming switching of the lens; the electric dimming mechanism drives a diaphragm sheet of the variable diaphragm to do rotary motion; the electric fog-penetrating switching mechanism is connected with the diaphragm seat and controls the optical filter turntable to rotate; the high-definition CMOS detector assembly is arranged on the electric fog-penetrating switching mechanism.
As shown in fig. 6 and 7, the electric focusing mechanism selects a front fixed group of lenses of the optical system to form a focusing lens group 21. The focusing lens group 21 is assembled into the focusing main lens barrel 25 after being ground and matched with the focusing main lens barrel 25, and the focusing cam 24 is arranged on the focusing main lens barrel 25 and is pressed by the focusing cam pressing ring 22. The focusing cam 24 mills a linear chute according to the optical requirement, and the focusing main lens barrel 25 mills a straight chute; the focusing lens group 21, the focusing cam 24 and the focusing main lens barrel 25 are connected together by 3 focusing guide pin assemblies 23 which are uniformly distributed at 120 degrees, and the focusing motor gear 28 is meshed with a gear on the focusing cam 24. When the focusing motor 29 is powered on to rotate and drives the focusing cam 24 to rotate, the rotational movement of the focusing lens group 21 is converted into linear movement by the limit of the straight groove on the focusing main lens barrel 25, so that focusing on a far and near target is realized. When focusing is carried out on a far target and a near target, the focusing potentiometer gear 210 is meshed with the focusing motor gear 28 to drive the focusing potentiometer 211 to rotate, so that the resistance value of the focusing potentiometer 211 is changed, and the change value of the focusing potentiometer 211 can be read out through a proper sampling circuit and transmitted to a control center, so that the display of the focusing distance value is realized; on the contrary, the control center gives out a command, so that the real-time control of the focusing distance value can be realized.
As shown in fig. 8 and 9, in the electric zoom mechanism: the zoom lens group 31 is arranged on the zoom carriage 32 through screws to form a zoom assembly; the compensation mirror group 39 is mounted on the compensation carriage 310 by screws to form a compensation assembly. The zoom carriage 32 and the compensation carriage 310 are respectively installed in the main lens barrel 36 after being in grinding fit with the main lens barrel 36, the zoom cam 35 is installed on the main lens barrel 36 through front and rear precision steel balls 33 and 37 and is pressed by a zoom cam pressing ring 38 to form a rolling bearing structure, and sliding friction during rotation of the zoom cam 35 is converted into rolling friction so as to reduce friction force during movement of the zoom cam 35. The zoom cam 35 is respectively milled with a variable-magnification curve groove and a compensation curve groove according to the requirement of an optical zoom motion equation, and then the zoom cam 35 is connected with the variable-magnification carriage 32 and the compensation carriage 310 by the variable-magnification guide pin assembly 34 and the compensation guide pin assembly 311. The zoom motor gear 317 and the zoom potentiometer gear 316 are gear-engaged with the zoom cam 35, respectively. When the rotor of the zoom motor 315 rotates positively and negatively, the precision potentiometer 314 is rotated in synchronization with the zoom cam 35. The variable-magnification carriage 32 and the compensating carriage 310 are driven to move according to the variable-magnification and compensating curve grooves by the variable-magnification and compensating curve grooves and the variable-magnification guide pin assembly 34 and the compensating guide pin assembly 311. The two straight grooves on the main barrel 36 serve to support the variable magnification guide pin assembly 34 and the compensation guide pin assembly 311, and change the rotational movement of the variable magnification carriage 32, the compensation carriage 310 into a linear movement. The fit clearance between the variable-magnification guide pin assembly 34 and the compensation guide pin assembly 311 and the curve groove of the variable-magnification cam 35 and the straight groove of the main lens barrel 36 is strictly controlled, so that the variable-magnification and compensation assembly can slide stably and comfortably without clamping stagnation. Thus, the zoom motor 315 rotates to realize the front-back linear motion of the zoom component and the compensation component according to the zoom motion equation, thereby realizing the continuous variable function of the system focal length. When the focal length of the system changes, the zoom potentiometer gear 316 is meshed with the zoom cam 35 to enable the precision potentiometer 314 to rotate, so that the resistance value of the precision potentiometer 314 changes, and the change value of the precision potentiometer 314 can be taken out through a proper sampling circuit and transmitted to a control center, so that the display of the focal length value is realized; on the contrary, the control center gives out a command, so that the real-time control of the focal length can be realized.
As shown in fig. 10 and 11, in the electric dimming mechanism: the diaphragm pin and diaphragm form a diaphragm assembly 48. The movable pin end of the diaphragm sheet assembly 48 is uniformly arranged in the hole of the diaphragm seat 41, the diaphragm movable ring 43 is arranged on the diaphragm seat 41, meanwhile, the fixed pin end of the diaphragm sheet assembly 48 is required to be uniformly arranged in the straight groove on the diaphragm movable ring 43, and the diaphragm movable ring pressing ring 42 is arranged on the diaphragm seat 41 through threads; the diaphragm seat 41 is used for milling grooves according to movable corners of diaphragm sheets, the diaphragm movable ring 43 is matched with the diaphragm adjusting ring 47 through the diaphragm shifting nails 45, and the diaphragm adjusting ring is locked by the diaphragm adjusting ring pressing ring 46, so that the diaphragm adjusting ring 47 rotates stably and is free of clamping stagnation. The diaphragm motor gear 44 is meshed with a gear on the diaphragm adjusting ring 47, and when the diaphragm motor 411 is powered on, the diaphragm adjusting ring 47 is driven to rotate, and the diaphragm sheet assembly follows the diaphragm to rotate, so that the size of a diaphragm opening is changed, and the diaphragm continuously variable function is realized.
As shown in fig. 12 and 13, the electric mist-permeable switching mechanism: the visible light filter 52, the infrared filter 55 and the laser 1064nm filter 511 are respectively arranged in the filter turntable 56 according to the positions shown in fig. 12 and 13, and the filter turntable 56 is fixed on the rear group connecting plate 51 through the filter turntable shaft 53, so that the filter turntable 56 rotates stably without clamping stagnation. The filter motor 59 is meshed with the filter turntable 56 through the filter idler wheel 58, and when the filter motor 59 is powered on, the filter turntable 56 is driven to rotate, and the filter microswitch 54 plays a limiting role, so that the cyclic switching among the visible light filter, the infrared filter and the laser 1064nm is realized, and finally the fog penetrating requirement is achieved. The clamping grooves on the rear group connecting plates 51 are connected with the COMS detector assembly, so that the position accuracy of the CMOS detector target surface is controlled and adjusted, the freedom degree of the lens is limited during integral debugging, and the debugging efficiency of the lens is ensured.
If the invention discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (5)
1. The utility model provides a 30 times Gao Qingchang burnt continuous zoom lens of area fog penetration which characterized in that: the optical system of the lens consists of a front fixed lens group, a variable magnification lens group, a compensation lens group, a variable diaphragm, a rear fixed lens group and an optical filter which are sequentially arranged from left to right along the light incidence direction, wherein the front fixed lens group consists of a first gluing group, a second gluing group and a positive crescent lens E, wherein the first gluing group is tightly connected with a negative crescent lens A and a biconvex lens B, the second gluing group is tightly connected with a negative crescent lens C and a positive crescent lens D, and the second gluing group is tightly connected with a positive crescent lens E; the zoom lens group consists of a negative crescent lens F, a biconcave lens G, a third gluing group tightly connected with a biconvex lens H and a biconcave lens I which are sequentially arranged from left to right; the compensation lens group consists of a biconvex lens J, a negative crescent lens K, a fourth gluing group closely connected with the biconvex lens L and a biconvex lens M which are sequentially arranged from left to right; the rear fixed lens group consists of a fifth gluing group, a negative crescent lens R, a biconcave lens S and a sixth gluing group, wherein the negative crescent lens N, the positive crescent lens O, the biconcave lens P and the biconvex lens Q are tightly connected in sequence from left to right;
the air interval between the front fixed lens group and the variable-magnification lens group is 4.5mm-55.0mm, the air interval between the variable-magnification lens group and the compensation lens group is 82.6mm-2.0mm, and the air interval between the compensation lens group and the rear fixed lens group is 4.5mm-34.6mm.
2. The continuous zoom lens of claim 1, wherein the lens is 30 times Gao Qingchang focus with fog penetration, and is characterized in that: the air interval between the first bonding group and the second bonding group is 0.2mm, and the air interval between the second bonding group and the orthodontic lens E is 0.2mm; the air interval between the negative crescent lens F and the third gluing group is 2.5mm, and the air interval between the third gluing group and the biconcave lens I is 1.0mm; the air interval between the biconvex lens J and the fourth bonding group is 0.2mm, and the air interval between the fourth bonding group and the biconvex lens M is 0.2mm; the air interval between the negative crescent lens N and the positive crescent lens O is 0.2mm, the air interval between the positive crescent lens O and the fifth bonding group is 2.5mm, the air interval between the fifth bonding group and the negative crescent lens R is 0.2mm, and the air interval between the negative crescent lens R and the sixth bonding group is 10.7mm.
3. The continuous zoom lens of claim 1, wherein the lens is 30 times Gao Qingchang focus with fog penetration, and is characterized in that: the negative crescent lens A, the negative crescent lens C, the positive crescent lens D, the positive crescent lens E, the negative crescent lens F, the negative crescent lens K, the positive crescent lens O and the negative crescent lens R are all made of ultralow-dispersion optical glass.
4. The continuous zoom lens of claim 1, wherein the lens is 30 times Gao Qingchang focus with fog penetration, and is characterized in that: the lens is sequentially provided with a focusing main lens barrel, a main lens barrel and a diaphragm seat from left to right, a front group lens barrel is arranged in the focusing main lens barrel, a zoom sliding frame and a compensation sliding frame are arranged in the main lens barrel, and the zoom sliding frame and the compensation sliding frame are respectively provided with a zoom lens barrel and a compensation lens barrel; the front fixed lens group, the variable-magnification lens group, the compensation lens group and the rear fixed lens group are respectively arranged on the front lens barrel, the variable-magnification lens barrel, the compensation lens barrel and the diaphragm seat.
5. The continuous zoom lens of 30 times Gao Qingchang focus with fog penetration of claim 4, wherein: the lens also comprises an electric focusing mechanism, an electric zooming mechanism, an electric dimming mechanism, an electric fog-penetrating switching mechanism and a high-definition CMOS detector assembly, wherein the electric focusing mechanism adopts a front fixed lens group as a focusing moving group; the electric zooming mechanism respectively drives the zoom lens group and the compensation lens group to do linear reciprocating motion through the zoom sliding frame and the compensation sliding frame so as to complete continuous zooming switching of the lens; the electric dimming mechanism drives a diaphragm sheet of the variable diaphragm to do rotary motion; the electric fog-penetrating switching mechanism is connected with the diaphragm seat and controls the optical filter turntable to rotate; the high-definition CMOS detector assembly is arranged on the electric fog-penetrating switching mechanism.
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| CN202211669855.4A CN116165782B (en) | 2022-12-25 | 2022-12-25 | 30 times Gao Qingchang focus continuous zoom lens with fog penetrating function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5438620B2 (en) * | 2010-07-29 | 2014-03-12 | 富士フイルム株式会社 | Zoom lens and imaging device |
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| JP2008241884A (en) * | 2007-03-26 | 2008-10-09 | Fujinon Corp | High power zoom lens and imaging apparatus |
| CN204129320U (en) * | 2014-08-06 | 2015-01-28 | 青岛歌尔声学科技有限公司 | A kind of zoom lens |
| WO2016019823A1 (en) * | 2014-08-06 | 2016-02-11 | 青岛歌尔声学科技有限公司 | Zoom lens |
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