CN218413040U - Dual-purpose 10-time zoom lens for large target surface photographing - Google Patents
Dual-purpose 10-time zoom lens for large target surface photographing Download PDFInfo
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- CN218413040U CN218413040U CN202222334203.7U CN202222334203U CN218413040U CN 218413040 U CN218413040 U CN 218413040U CN 202222334203 U CN202222334203 U CN 202222334203U CN 218413040 U CN218413040 U CN 218413040U
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Abstract
The utility model relates to a big target surface is taken photograph and is shone dual-purpose 10 times zoom, its characterized in that: the lens group arranged along the light incidence direction comprises a front fixed lens group, a zoom lens group, a compensation lens group, a rear fixed lens group and an optical filter 15; the front fixed lens group is sequentially provided with a first gluing group, a second gluing group and a second positive crescent lens, the first gluing group is formed by closely jointing a first negative crescent lens and a first biconvex lens, and the second gluing group is formed by closely jointing a second negative crescent lens and a first positive crescent lens; the zoom lens group is sequentially provided with a first biconcave lens, a third cementing group formed by closely connecting a second biconcave lens and a third orthodontic lens, and a third biconcave lens; the utility model has the characteristics of wide spectrum section, ultrahigh resolution, light size, wide temperature adaptation range and the like.
Description
Technical Field
The utility model relates to a take photograph integrative optics and take photograph dual-purpose device, especially big target surface take photograph dual-purpose 10 times zoom, belong to the photoelectric technology field.
Background
With the rapid development of unmanned investigation and detection fields such as airborne and the like, the lens is required to be capable of carrying out photographing screening and photographing tracking, and can be normally used in severe environments such as rain, snow, fog and the like in an overhead state; therefore, the lens needs to have the characteristics of ultrahigh definition, dual purposes of shooting and photographing, zooming, fog penetration switching and the like, and the total optical length is controlled on the premise of ensuring the imaging performance, so that the product is compact and concise in structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned defect, provide a big target surface and take photograph dual-purpose 10 times zoom lens, this camera lens has overcome present camera lens can't satisfy the superelevation simultaneously clear, take photograph and photograph dual-purpose, 10 times zoom, pass through the fog requirement of switching, under the prerequisite of guaranteeing the imaging performance, control optics overall length realizes product compact structure, succinct.
The utility model discloses big target surface is taken photograph and is shone dual-purpose 10 times zoom, its characterized in that: the lens group distributed along the light incidence direction comprises a front fixed lens group, a zoom lens group, a compensation lens group, a rear fixed lens group and an optical filter; the front fixed lens group is sequentially provided with a first gluing group, a second gluing group and a second positive crescent lens, the first gluing group is formed by closely jointing a first negative crescent lens and a first biconvex lens, and the second gluing group is formed by closely jointing a second negative crescent lens and a first positive crescent lens; the zoom lens group is sequentially provided with a first biconcave lens, a third cemented group formed by closely connecting a second biconcave lens and a third orthodontic lens, and a third biconcave lens; the compensation lens group is sequentially provided with a second biconvex lens, a fourth bonding group formed by tightly connecting a third negative crescent lens and a third biconvex lens, and a fourth biconvex lens; the rear fixed lens group is sequentially provided with a fifth glue combination formed by tightly connecting a fourth biconcave lens and a fifth biconvex lens, a fourth positive crescent lens, a sixth glue combination formed by tightly connecting a fourth negative crescent lens and a sixth biconvex lens, a fifth negative crescent lens and a sixth negative crescent lens, and a seventh glue combination formed by tightly connecting a seventh negative crescent lens and a seventh biconvex lens.
Furthermore, along the incident direction of light rays, the air space between the front fixed lens group and the zoom lens group is 4.09-54.6 mm, the air space between the zoom lens group and the compensation lens group is 2.08-82.06 mm, and the air space between the compensation lens group and the rear fixed lens group is 4.2-33.68 mm.
Further, in the front fixed lens group, along the light incidence direction, the air space between the first gluing group and the second gluing group is 0.2mm, and the air space between the second gluing group and the second orthodontic lens is 0.2mm; in the zoom lens group, the air interval between the first biconcave lens and the third gluing group is 7.5mm, and the air interval between the third gluing group and the third biconcave lens is 1.9mm; in the compensation lens group, the air space between the second biconvex lens and the fourth cemented group is 0.6mm, and the air space between the fourth cemented group and the fourth biconvex lens is 0.2mm; in the rear fixed lens group, the air space between the fifth cemented lens and the fourth positive meniscus lens is 0.2mm, the air space between the fourth positive meniscus lens and the sixth cemented lens is 9.8mm, the air space between the sixth cemented lens and the fifth negative meniscus lens is 7mm, the air space between the fifth negative meniscus lens and the sixth negative meniscus lens is 16mm, the air space between the sixth negative meniscus lens and the seventh cemented lens is 0.2mm, and the air space between the seventh cemented lens and the color filter is 2mm.
Further, the first biconvex lens and the first orthodontic lens are made of an ultra-low dispersion material H-FK 61.
Furthermore, the optical system formed by the lens group achieves the following optical indexes:
focal length: f 'min =27.6mm, f' max =276mm;
relative pore size D/f' =1/4.8;
the field angle 2 ω =50.16 ° -5.36 °;
the length sigma L of the optical structure is less than or equal to 232.5mm;
the zoom stroke is less than or equal to 50.5mm;
lens resolution: the camera is matched with a CCD camera or a CMOS camera with more than 1600w pixels;
transmission spectrum of haze-transmitting filter: 750 to 950nm.
Furthermore, the lens is provided with an electric focusing mechanism, an electric zooming mechanism and an electric fog-penetrating switching structure, wherein the electric focusing mechanism selects an optical system front fixed group lens to form a focusing lens group, the focusing lens group and a focusing cam are respectively arranged in a focusing main lens barrel, a linear inclined groove is milled on the focusing cam, and a straight groove is milled on the focusing main lens barrel; the focusing lens group is connected with the focusing cam and the focusing main lens cone through the focusing guide pin assembly, and the focusing gear is meshed with a gear on the focusing cam; the focusing gear is driven by the focusing motor to rotate, and drives the focusing cam to rotate.
Furthermore, the electric zooming mechanism comprises a zooming lens group and a zooming carriage, wherein the zooming lens group is arranged on the zooming carriage through a screw to form a zooming assembly; the compensation lens group is arranged on the compensation sliding frame through a screw to form a compensation assembly; the zooming sliding frame and the compensating sliding frame are respectively arranged in the main lens cone, the zooming cam is arranged on the main lens cone through a front precise steel ball and a rear precise steel ball and is pressed by a zooming cam pressing ring to form a rolling bearing structure, a zooming curve groove and a compensating curve groove are respectively milled on the zooming cam, and the zooming cam, the zooming sliding frame and the compensating sliding frame are respectively connected through a zooming nail guide assembly and a compensating nail guide assembly; the zooming motor gear and the zooming potentiometer gear are respectively meshed with the zooming cam gear; the zoom motor gear and the zoom potentiometer gear are respectively connected to the output ends of the zoom motor and the precision potentiometer.
Furthermore, the electric fog-penetrating switching structure comprises a visible light filter and an infrared filter, the visible light filter and the infrared filter are respectively arranged on a filter turntable, the filter turntable is fixed on the rear group connecting plate through a filter turntable shaft, a filter motor gear is meshed with a gear of the filter turntable through a filter passing wheel, and the filter motor gear is connected to the output end of the filter motor.
The utility model discloses the structure includes parts such as focusing subassembly, the subassembly that zooms, after-fixing subassembly, fog penetration switching module and detector subassembly in proper order and constitutes, has continuous zoom closed-loop control function, focusing closed-loop control function, fog penetration function, focus feedback function and big target surface function of shooing/make a video recording.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Description of the drawings:
fig. 1 is an optical schematic diagram of a lens according to an embodiment of the present invention;
FIGS. 2 and 3 are partial views of FIG. 1
Fig. 4 is a schematic view of a lens structure according to an embodiment of the present invention;
fig. 5, 6 and 7 are schematic structural views of a lens focusing mechanism according to an embodiment of the present invention;
fig. 8 and 9 are schematic structural views of a lens zoom mechanism according to an embodiment of the present invention;
fig. 10 and 11 are schematic diagrams of lens fog-penetrating switching assemblies according to embodiments of the present invention.
In the figure: 11-front fixed lens group; 12-a variable power lens group; 13-a compensation lens group; 14-an iris diaphragm; 15-rear fixed lens group; 16-an optical filter; 17-a camera assembly; 21-a focusing cam pressing ring; 22-a focus main barrel; 23-a focusing lens group; 24-a focusing guide pin assembly; 25-a focusing cam; 26-a focusing motor frame; 27-a microswitch; 28-a focus gear; 29-focus potentiometer gear; 210-a focus motor; 211-focus potentiometers; 31-zoom lens group; 32-zoom carriage; 33-front row of steel balls; 34-zooming guide pin assembly; 35-a zoom cam; 36-a main barrel; 37-back row of steel balls; 38-a variable-magnification cam pressing ring; 39-a compensating mirror group; 310-compensation carriage; 311-compensation guide pin assembly; 312-a connection base; 313-a microswitch; 314-a microswitch bracket; 315-precision potentiometer; 316-variable magnification motor; 317-zoom potentiometer gear; 318-zoom motor gear; 41-rear group connecting plate; 42-visible light filter; 43-filter turntable axis; 44-filter hall element; 45-near infrared filter; 46-a filter turntable; 47-filter motor gear; 48-filter wheel; 49-filter motor.
The specific implementation mode is as follows:
referring to fig. 1-3, a large-aperture dual-purpose lens for photographing and shooting comprises a front fixed lens group 11, a zoom lens group 12, a compensation lens group 13, a rear fixed lens group 14 and an optical filter 15; the front fixed lens group 11 is sequentially provided with a first gluing group, a second gluing group and a second positive crescent lens 115, wherein the first gluing group is formed by closely jointing a first negative crescent lens 111 and a first biconvex lens 112, and the second gluing group is formed by closely jointing a second negative crescent lens 113 and a first positive crescent lens 114; the variable power lens group 12 is provided with a first biconcave lens 121, a third cemented group formed by closely connecting a second biconcave lens 122 and a third orthodontic lens 123, and a third biconcave lens 124 in sequence; the compensation lens group 13 is sequentially provided with a second biconvex lens 131, a fourth cemented group formed by closely connecting a third negative crescent lens 132 and a third biconvex lens 133, and a fourth biconvex lens 134; the rear fixed lens group 14 is provided with a fifth cemented group formed by a fourth biconcave lens 141 and a fifth biconvex lens 142 which are closely connected, a fourth positive meniscus lens 143, a sixth cemented group formed by a fourth negative meniscus lens 144 and a sixth biconvex lens 145 which are closely connected, a fifth negative meniscus lens 146 and a sixth negative meniscus lens 147, and a seventh cemented group formed by a seventh negative meniscus lens 148 and a seventh biconvex lens 149 which are closely connected in this order.
Along the incident direction of light, the air space between the front fixed lens group 11 and the zoom lens group 12 is 4.09-54.6 mm, the air space between the zoom lens group 12 and the compensation lens group 13 is 2.08-82.06 mm, and the air space between the compensation lens group 13 and the rear fixed lens group 14 is 4.2-33.68 mm.
In the front fixed lens group 11, along the incident direction of light, 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 second orthodontic lens 115 is 0.2mm; in the variable power lens group 12, the air space between the first biconcave lens 121 and the third cemented lens is 7.5mm, and the air space between the third cemented lens and the third biconcave lens 124 is 1.9mm; in the compensation lens group 13, the air space between the second biconvex lens 131 and the fourth cemented group is 0.6mm, and the air space between the fourth cemented group and the fourth biconvex lens 134 is 0.2mm; in the rear fixed lens group 14, an air space between the fifth cemented group and the fourth positive meniscus lens 143 is 0.2mm, an air space between the fourth positive meniscus lens 143 and the sixth cemented group is 9.8mm, an air space between the sixth cemented group and the fifth negative meniscus lens 146 is 7mm, an air space between the fifth negative meniscus lens 146 and the sixth negative meniscus lens 147 is 16mm, an air space between the sixth negative meniscus lens 147 and the seventh cemented group is 0.2mm, and an air space between the seventh cemented group and the color filter 15 is 2mm.
The first biconvex lens 112 and the first orthodontic lens 114 are made of an ultra-low dispersion material H-FK 61.
The optical system formed by the lens group achieves the following optical indexes:
focal length: f 'min =27.6mm, f' max =276mm;
relative pore size D/f' =1/4.8;
the field angle 2 ω =50.16 ° -5.36 °;
the length sigma L of the optical structure is less than or equal to 232.5mm;
the zoom stroke is less than or equal to 50.5mm;
lens resolution: the camera is matched with a CCD camera or a CMOS camera with more than 1600w pixels;
transmission spectrum of haze-transmitting filter: 750 to 950nm.
In the optical design, the first biconvex lens 112 and the first orthodontic lens 114 are arranged in the front fixed lens group, and an ED (ultra-low dispersion) optical material is selected, so that the focal power bearing capacity of the front fixed group with the highest axial light height is improved, the aberrations such as the secondary spectrum of the optical lens are effectively reduced, the lens can form images in a wide spectral range, the resolution is obviously improved, the level of ultra-megapixels is achieved, and the optical lens can be adapted to a high-definition camera; aiming at the defect that the optical total length of the alignment group compensation structure is longer.
Considering that under the conditions of haze such as rain, snow, mist and the like, the air contains tiny water particles, according to the Mie scattering theory: when the ratio c/lambda of the radius c of the scattering particles to the wavelength lambda of incident light is smaller, the light energy of an image on an image surface is reduced to a smaller extent, so that the weight of a near-infrared spectrum (a spectrum with the wavelength lambda of more than 750 nm) is increased during optical design, the lens also has higher resolution in a near-infrared band, and the film system is optimally designed, so that the optical lens has a transmittance higher than 80% in the range of 450nm to 950nm.
Referring to fig. 4, the overall structure of a dual-purpose 10-fold zoom lens for large target surface photographing is provided with an electric focusing mechanism a, an electric zooming mechanism B, an electric fog penetration switching mechanism C, a rear fixing assembly D and a detector assembly E; meanwhile, the motor, the potentiometer and the Hall element plate are designed in a backpack mode, and the occupied space of the lens is reduced.
As shown in fig. 5-7, the focusing mechanism of the focusing assembly selects a front fixed lens group of an optical system to form a focusing lens group, the focusing lens group 23 and the focusing cam 25 are respectively assembled into the focusing main lens barrel 22 after being in grinding fit with the focusing main lens barrel 22, the focusing cam 25 mills a linear inclined groove according to the requirement of the optical system on the focusing amount, and the focusing main lens barrel 22 mills a straight groove; the focusing mirror group 23 is connected with a focusing cam 25 and a focusing main lens barrel 22 by a focusing guide pin assembly 24, and a focusing gear 28 is meshed with a gear on the focusing cam 25; when the focusing motor 210 is powered on to rotate to drive the focusing cam 25 to rotate, the rotation motion of the focusing mirror group 23 is converted into linear motion through the restriction of the straight slot on the focusing main lens cone 22, so that the focusing of a far target and a near target is realized, and the focusing process is completed; when focusing on a far and near target, the focusing potentiometer gear 29 drives the focusing potentiometer 211 to rotate through meshing with the focusing gear 28, so that the resistance value of the zooming potentiometer 211 is changed, the change value of the zooming potentiometer 211 can be read through a proper sampling circuit and is transmitted to a control center, and the display of a focusing distance value is realized; on the contrary, the real-time control of the focusing distance value can be realized by giving a command through the control center.
Referring to fig. 8 to 9, the lens zoom mechanism: the zooming lens group 31 is arranged on the zooming carriage 32 through screws to form a zooming assembly; the compensating lens group 39 is mounted on the compensating sliding frame 310 through screws to form a compensating assembly; the zooming carriage 32 and the compensating carriage 310 are respectively arranged in the main lens cone 36 after being matched with the main lens cone 36 in a grinding way, the zooming cam 35 is arranged on the main lens cone 36 through a front precise steel ball 33 and a rear precise steel ball 37 and is pressed tightly by a zooming cam pressing ring 38 to form a rolling bearing structure, and the sliding friction of the zooming cam 35 during rotation is converted into rolling friction so as to reduce the friction force of the zooming cam 35 during movement; the zoom cam 35 mills a zooming curve groove and a compensating curve groove respectively according to the requirement of an optical zooming motion equation, and then the zoom cam 35 is connected with the zooming carriage 32 and the compensating carriage 310 by using a zooming guide pin assembly 34 and a compensating guide pin assembly 311; the zoom motor gear 318 and the zoom potentiometer gear 317 are respectively engaged with the zoom cam gear 35; when the rotor of the zooming motor 316 does positive and negative rotation movement, the 317-zooming potentiometer gear and the zooming cam 35 synchronously rotate; the zooming and compensating curve slot, the zooming guide pin component 34 and the compensating guide pin component 311 drive the zooming carriage 32 and the compensating carriage 310 to move according to the zooming and compensating curve slot; the two straight grooves on the main lens cone 36 play a role in supporting the zooming guide pin assembly 34 and the compensation guide pin assembly 311, and the rotary motion of the zooming carriage 32 and the compensation carriage 310 is changed into linear motion, and the fit clearance between the zooming guide pin assembly 34 and the compensation guide pin assembly 311 and the curved groove of the zoom cam 35 and the straight groove of the main lens cone 36 is strictly controlled, so that the zooming and compensation assemblies are ensured to slide stably without clamping stagnation; thus, the zooming motor 316 rotates to realize the forward and backward linear motion of the zooming component and the compensation component according to the zooming motion requirement, thereby realizing the continuous variable function of the system focal length; when the focal length of the system changes, the zoom potentiometer gear 317 is meshed with the gear of the zoom cam 35 to rotate the rotor of the precision potentiometer 315, so that the resistance value of the precision potentiometer 315 changes, and the change value of the precision potentiometer 315 can be taken out through a proper sampling circuit and transmitted to a control center, thereby realizing the display of the focal length value; on the contrary, the real-time control of the focal length can be realized by giving a command through the control center.
Referring to fig. 10 to 11, the color filter switching mechanism: the visible light filter 42 and the infrared filter 45 are respectively arranged in the filter turntable 46 according to the positions shown in fig. 5, the filter turntable 46 is fixed on the rear group connecting plate 41 through the filter turntable shaft 43, and the filter turntable 46 is ensured to rotate stably and has no clamping stagnation; the filter motor gear 49 is meshed with the gear of the filter turntable 46 through the filter passing wheel 48, when the filter motor 49 is powered up, the filter turntable 46 is driven to rotate, and the filter Hall element 44 plays a limiting role, so that the visible light filter and the infrared filter can be switched back and forth, and the fog penetration requirement is finally met.
The focusing motor, the zooming motor and the optical filter motor are all mounted in a backpack mode, the lens is overall concise and attractive, the motor gear is provided with a slipping mechanism, the gear is fixed by compressing a pressure spring and a slipping gasket through a locking nut, and the gear slips when the motor is overloaded to protect the motor.
When the focusing motor operates, the focusing cam rotates by driving the motor gear and the idle wheel, the focusing cam is connected with the focusing lens group through three uniformly distributed focusing guide nails, the guide nails enable the focusing lens group to do linear reciprocating motion under the action of three uniformly distributed straight slots formed in the focusing main lens cone, the circular motion of the motor drives the focusing lens group to do linear motion, and the motor rotates forwards and backwards to drive the focusing lens group to do front-back motion, so that the focusing purpose is realized.
When the zooming motor runs, the zooming cam rotates by driving the motor gear and the idle wheel to rotate. The zooming cam is connected with the zooming and compensating carriage through the zooming and compensating roller on the zooming guide pin, and the guide pin makes the zooming component and the compensating component do linear reciprocating motion under the action of the straight groove on the main lens cone. The circular motion of the motor drives the sliding frame to do linear motion, and the positive and negative rotation of the motor can drive the zooming mechanism to move back and forth, so that the zooming purpose is realized.
The focusing mechanism, the zooming mechanism and the optical filter switching mechanism are matched and connected by screws and the main front face, so that the concentricity requirement can be effectively ensured, the appearance size is reduced, and the lens is light and small as possible. Meanwhile, the convenience of processing, assembly and debugging is considered.
All the thread joints of the lens are glued and fastened, and all the cone-end set screws are wrapped with pits and glued and fastened, so that firm connection is ensured, and the performances of vibration resistance, impact resistance and the like are improved.
The inner walls of the lens cones of each group of the lens, the pressing rings, the spacing rings and the like are all processed with a plurality of insections with proper width, and are coated with matting paint, and the inner walls of the parts are utilized to scatter and absorb stray light radiation, so that the aim of inhibiting the stray light is fulfilled.
The front focusing mirror group is used for focusing different targets at different distances, so that the defect of small depth of field of the large-caliber lens is overcome; meanwhile, the focusing lens is used for carrying out temperature focusing on the image plane drift caused by temperature, so that the lens can still well image in a high-temperature and low-temperature state.
The above-mentioned preferred embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (8)
1. A large target surface takes photograph and shines dual-purpose 10 times zoom lens which characterized in that: the lens group distributed along the light incidence direction comprises a front fixed lens group, a zoom lens group, a compensation lens group, a rear fixed lens group and an optical filter; the front fixed lens group is sequentially provided with a first gluing group, a second gluing group and a second positive crescent lens, the first gluing group is formed by closely jointing a first negative crescent lens and a first biconvex lens, and the second gluing group is formed by closely jointing a second negative crescent lens and a first positive crescent lens; the zoom lens group is sequentially provided with a first biconcave lens, a third cemented group formed by closely connecting a second biconcave lens and a third orthodontic lens, and a third biconcave lens; the compensation lens group is sequentially provided with a second biconvex lens, a fourth cemented group formed by a third negative crescent lens and a third biconvex lens in a sealed connection manner, and a fourth biconvex lens; the rear fixed lens group is sequentially provided with a fifth glue combination formed by tightly connecting a fourth biconcave lens and a fifth biconvex lens, a fourth positive crescent lens, a sixth glue combination formed by tightly connecting a fourth negative crescent lens and a sixth biconvex lens, a fifth negative crescent lens and a sixth negative crescent lens, and a seventh glue combination formed by tightly connecting a seventh negative crescent lens and a seventh biconvex lens.
2. The large-target-area photographing 10-fold zoom lens according to claim 1, wherein: along the incident direction of light rays, the air space between the front fixed lens group and the zoom lens group is 4.09-54.6 mm, the air space between the zoom lens group and the compensation lens group is 2.08-82.06 mm, and the air space between the compensation lens group and the rear fixed lens group is 4.2-33.68 mm.
3. The large-target 10-magnification zoom lens for photographing and according to claim 1 or 2, characterized in that: in the front fixed lens group, the air interval between the first gluing group and the second gluing group is 0.2mm, and the air interval between the second gluing group and the second orthodontic lens is 0.2mm along the incident direction of light; in the zoom lens group, the air interval between the first biconcave lens and the third cemented lens is 7.5mm, and the air interval between the third cemented lens and the third biconcave lens is 1.9mm; in the compensation lens group, the air space between the second biconvex lens and the fourth glue group is 0.6mm, and the air space between the fourth glue group and the fourth biconvex lens is 0.2mm; in the rear fixed lens group, the air space between the fifth cemented group and the fourth positive crescent lens is 0.2mm, the air space between the fourth positive crescent lens and the sixth cemented group is 9.8mm, the air space between the sixth cemented group and the fifth negative crescent lens is 7mm, the air space between the fifth negative crescent lens and the sixth negative crescent lens is 16mm, the air space between the sixth negative crescent lens and the seventh cemented group is 0.2mm, and the air space between the seventh cemented group and the color filter is 2mm.
4. The large-target-area photographing 10-fold zoom lens according to claim 3, wherein: the first biconvex lens and the first orthodontic lens are made of an ultra-low dispersion material H-FK 61.
5. The large-target-area photographing 10-fold zoom lens according to claim 3, wherein: the optical system formed by the lens group achieves the following optical indexes:
focal length: f 'min =27.6mm, f' max =276mm;
relative pore size D/f' =1/4.8;
the field angle 2 ω =50.16 ° -5.36 °;
the length sigma L of the optical structure is less than or equal to 232.5mm;
the zoom stroke is less than or equal to 50.5mm;
lens resolution: the camera is matched with a CCD camera or a CMOS camera with more than 1600w pixels;
transmission spectrum of haze-transmitting filter: 750 to 950nm.
6. The large-target-surface camera shooting 10-fold zoom lens according to claim 1, characterized in that: the lens is provided with an electric focusing mechanism, an electric zooming mechanism and an electric fog-penetrating switching structure, the electric focusing mechanism selects an optical system front fixed group lens to form a focusing lens group, the focusing lens group and a focusing cam are respectively arranged in a focusing main lens cone, a linear chute is milled on the focusing cam, and a straight chute is milled on the focusing main lens cone; the focusing lens group is connected with the focusing cam and the focusing main lens cone through the focusing guide pin assembly, and the focusing gear is meshed with a gear on the focusing cam; the focusing gear is driven by the focusing motor to rotate, and drives the focusing cam to rotate.
7. The large-target-surface camera shooting 10-fold zoom lens according to claim 6, characterized in that: the electric zooming mechanism comprises a zooming lens group and a zooming carriage, and the zooming lens group is arranged on the zooming carriage through a screw to form a zooming assembly; the compensation lens group is arranged on the compensation sliding frame through a screw to form a compensation assembly; the zooming sliding frame and the compensating sliding frame are respectively arranged in the main lens cone, the zooming cam is arranged on the main lens cone through a front precise steel ball and a rear precise steel ball and is pressed by a zooming cam pressing ring to form a rolling bearing structure, a zooming curve groove and a compensating curve groove are respectively milled on the zooming cam, and the zooming cam, the zooming sliding frame and the compensating sliding frame are respectively connected through a zooming nail guide assembly and a compensating nail guide assembly; the zooming motor gear and the zooming potentiometer gear are respectively meshed with the zooming cam gear; the zoom motor gear and the zoom potentiometer gear are respectively connected to the output ends of the zoom motor and the precision potentiometer.
8. The large-target-area photographing 10-fold zoom lens according to claim 6, wherein: the electric fog-penetrating switching structure comprises a visible light filter and an infrared filter, wherein the visible light filter and the infrared filter are respectively arranged on a filter turntable, the filter turntable is fixed on the rear group connecting plate through a filter turntable shaft, a filter motor gear is meshed with a gear of the filter turntable through a filter passing wheel, and the filter motor gear is connected to the output end of a filter motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222334203.7U CN218413040U (en) | 2022-09-02 | 2022-09-02 | Dual-purpose 10-time zoom lens for large target surface photographing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222334203.7U CN218413040U (en) | 2022-09-02 | 2022-09-02 | Dual-purpose 10-time zoom lens for large target surface photographing |
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| Publication Number | Publication Date |
|---|---|
| CN218413040U true CN218413040U (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222334203.7U Active CN218413040U (en) | 2022-09-02 | 2022-09-02 | Dual-purpose 10-time zoom lens for large target surface photographing |
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| Country | Link |
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| CN (1) | CN218413040U (en) |
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2022
- 2022-09-02 CN CN202222334203.7U patent/CN218413040U/en active Active
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