CN209979923U - High zoom continuous zoom lens - Google Patents
High zoom continuous zoom lens Download PDFInfo
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- CN209979923U CN209979923U CN201920914573.3U CN201920914573U CN209979923U CN 209979923 U CN209979923 U CN 209979923U CN 201920914573 U CN201920914573 U CN 201920914573U CN 209979923 U CN209979923 U CN 209979923U
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Abstract
The utility model relates to a high zoom continuous zoom lens, including the lens cone, positive lens A, negative lens B, positive lens C, negative lens D, positive lens E, positive lens F have set gradually along light from the left hand right side incident direction in the lens cone, the lens cone is including the preceding lens cone, the back lens cone that connect gradually, the cover is equipped with zoom cam on the preceding lens cone, and the cover is equipped with focusing cam on the back lens cone, and preceding lens cone periphery, zoom cam periphery are provided with matched with zoom cam groove, and back lens cone periphery, focusing cam periphery are provided with matched with focusing cam groove, and zoom cam is rotatory, and zoom cam moves through zoom guide nail, compensation guide nail drive negative lens B on the zoom balladeur train respectively and positive lens C on the compensation balladeur train, and focusing cam is rotatory, and focusing cam moves through positive lens F on focusing guide nail drive microscope base F, and this lens structural design is simple, The zoom lens is compact and has the characteristics of high zoom ratio, high transmittance, long detection distance, stable zooming process and the like.
Description
Technical Field
The utility model relates to a high zoom continuous zoom lens.
Background
The non-refrigeration infrared product is widely applied at present, and is widely applied to various fields such as monitoring, investigation, forest fire prevention and the like due to the all-weather day and night observation capability. Compared with a refrigeration infrared product, the uncooled thermal infrared imager does not need to refrigerate the detector, is convenient to use, wide in application range and low in price, and is more suitable for the civil market.
The continuous zooming uncooled infrared lens is an important component of the thermal infrared imager, can clearly image far and near targets, provides the most suitable picture and view field for users, and is increasingly applied to security protection and forest fire prevention.
Disclosure of Invention
In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a high zoom ratio zoom lens.
In order to solve the technical problem, the technical scheme of the utility model is that a high zoom continuous zoom lens, including the lens cone, positive lens A, negative lens B, positive lens C, negative lens D, positive lens E, positive lens F have set gradually along light from left to right incident direction in the lens cone, the air interval of positive lens A and negative lens B is 15.37 ~ 96.66.66 mm, the air interval of negative lens B and positive lens C is 5.23 ~ 133.55 mm, the air interval of positive lens C and negative lens D is 5.35 ~ 52.02mm, the air interval of negative lens D and positive lens E is 5.45mm, the air interval of positive lens E and positive lens F is 40.22 ~ 46.92.92 mm.
Furthermore, the lens cone comprises a front lens cone and a rear lens cone which are connected in sequence, wherein a zoom cam is sleeved on the front lens cone, a focusing cam is sleeved on the rear lens cone, matched zoom cam grooves are formed in the periphery of the front lens cone and the periphery of the zoom cam, and matched focusing cam grooves are formed in the periphery of the rear lens cone and the periphery of the focusing cam;
the positive lens A is arranged in a lens base A, the front side of the positive lens A is provided with a pressing ring A, the front ends of the lens base A and the front lens cone are connected through threads, the negative lens B is arranged in the lens base B, the front side of the negative lens B is provided with a pressing ring B, the lens base B is arranged on a zooming carriage, the zooming carriage is arranged in the front lens cone, the periphery of the zooming carriage is provided with a zooming guide pin which is positioned in a zooming cam groove of the front lens cone and a zooming cam, the negative lens C is arranged in the lens base C, the rear side of the negative lens C is provided with a pressing ring C, the lens base C is arranged on a compensating carriage, the compensating carriage is arranged in the front lens cone, the periphery of the compensating carriage is provided with a compensating guide pin which is positioned in a zooming cam groove of the front lens cone and the zooming cam, the periphery of the front end of the front lens cone is provided with a motor frame A, the motor frame A is provided with a zooming motor, and, the periphery of the zoom cam is provided with a gear part in meshing transmission with the zoom gear;
negative lens D, positive lens E installs the inside front end in the lens cone of back, negative lens D, be provided with the space ring between the positive lens E, negative lens D front side is provided with clamping ring D, positive lens F installs in microscope base F, positive lens F rear side is provided with clamping ring F, microscope base F installs the rear portion in the lens cone of back, microscope base F periphery is provided with the focusing and leads the nail, the focusing is led the nail and is located the back lens cone, the focusing cam groove of focusing cam, motor frame B is installed to back lens cone rear end periphery, install the focusing motor on the motor frame B, install the focusing gear on the output shaft of focusing motor, focusing cam periphery is provided with the gear portion with focusing gear meshing transmission.
Further, a sealing ring is arranged between the lens base A and the main lens cone.
Further, the lens base B is locked on the zooming sliding frame through screws, and the lens base C is locked on the compensation sliding frame through screws.
Furthermore, a roller is arranged on the zoom guide pin and is positioned in the zoom cam groove.
Furthermore, wedge-shaped grooves are formed in two ends of the inner side of the zooming cam, and steel balls are filled in the wedge-shaped grooves.
Compared with the prior art, the utility model discloses following beneficial effect has: the structure design is simple and compact, and the device has the characteristics of high zoom ratio, high transmittance, long detection distance, stable zooming process and the like.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a lens;
fig. 2 is a schematic view of the motor installation.
In the figure:
1-pressing ring of lens base A; 2-pressing ring A; 3-front connecting flange; 4-microscope base A; 5-front lens barrel; 6-pressing ring B; 7-a lens base B; 8-a zoom cam; 9-zooming carriage; 10-a compensation carriage; 11-lens holder C; 12-pressing ring C; 13-pressing ring D; 14-a zoom cam retainer ring; 15-rear lens barrel; 16-lens holder F; 17-pressing ring F; 18-a focusing cam; 19-a focusing cam pressing ring; 20-a connecting seat; 21-positive lens A; 22-negative lens B; 23-positive lens C; 24-a negative lens D; 25-space ring; 26-positive lens E; 27-positive lens F; 28-variable magnification gear; 29-a zoom motor; 30-a focus motor; 31-focusing gear.
Detailed Description
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-2, a high zoom continuous zoom lens includes a lens barrel, in which a positive lens a, a negative lens B, a positive lens C, a negative lens D, a positive lens E, and a positive lens F are sequentially disposed along a left-right incident direction of light, an air interval between the positive lens a and the negative lens B is 15.37 ~ 96.66.66 mm, an air interval between the negative lens B and the positive lens C is 5.23 ~ 133.55 mm, an air interval between the positive lens C and the negative lens D is 5.35 ~ 52.02mm, an air interval between the negative lens D and the positive lens E is 5.45mm, and an air interval between the positive lens E and the positive lens F is 40.22 ~ 46.92.92 mm.
In this implementation, the lens barrel includes a front lens barrel and a rear lens barrel which are connected in sequence, the front lens barrel is sleeved with a zoom cam, the rear lens barrel is sleeved with a focusing cam, the periphery of the front lens barrel and the periphery of the zoom cam are provided with matched zoom cam grooves, and the periphery of the rear lens barrel and the periphery of the focusing cam are provided with matched focusing cam grooves;
the positive lens A is arranged in a lens base A, the front side of the positive lens A is provided with a pressing ring A, the front ends of the lens base A and the front lens cone are connected through threads, the negative lens B is arranged in the lens base B, the front side of the negative lens B is provided with a pressing ring B, the lens base B is arranged on a zooming carriage, the zooming carriage is arranged in the front lens cone, the periphery of the zooming carriage is provided with a zooming guide pin which is positioned in a zooming cam groove of the front lens cone and a zooming cam, the negative lens C is arranged in the lens base C, the rear side of the negative lens C is provided with a pressing ring C, the lens base C is arranged on a compensating carriage, the compensating carriage is arranged in the front lens cone, the periphery of the compensating carriage is provided with a compensating guide pin which is positioned in a zooming cam groove of the front lens cone and the zooming cam, the periphery of the front end of the front lens cone is provided with a motor frame A, the motor frame A is provided with a zooming motor, and, the periphery of the zoom cam is provided with a gear part in meshing transmission with the zoom gear;
negative lens D, positive lens E installs the inside front end in the lens cone of back, negative lens D, be provided with the space ring between the positive lens E, negative lens D front side is provided with clamping ring D, positive lens F installs in microscope base F, positive lens F rear side is provided with clamping ring F, microscope base F installs the rear portion in the lens cone of back, microscope base F periphery is provided with the focusing and leads the nail, the focusing is led the nail and is located the back lens cone, the focusing cam groove of focusing cam, motor frame B is installed to back lens cone rear end periphery, install the focusing motor on the motor frame B, install the focusing gear on the output shaft of focusing motor, focusing cam periphery is provided with the gear portion with focusing gear meshing transmission.
In this implementation, a sealing ring is arranged between the lens base a and the main lens barrel, so as to achieve the waterproof effect.
In the present embodiment, the microscope base B is screwed to the zoom carriage, and the microscope base C is screwed to the compensation carriage.
In this implementation, the zoom guide pin is provided with a roller, the roller is positioned in the zoom cam groove, the friction between the groove and the guide pin is reduced by the roller, and the fluency and the stability in the zoom process are improved.
In this implementation, wedge-shaped grooves are formed at two ends of the inner side of the zoom cam, and steel balls are filled in the wedge-shaped grooves.
When in use:
(1) the lens base A is connected with the front end of the front lens barrel through threads, and the air distance between the positive lens A and the negative lens B is adjusted through the rotation of the threads;
(2) the zooming motor drives the zooming cam to rotate through the zooming gear, and the zooming cam drives the negative lens B on the zooming carriage and the positive lens C on the compensation carriage to move respectively through the zooming guide pin and the compensation guide pin so as to finish zooming of the optical system;
(3) the focusing motor drives the focusing cam to rotate through the focusing gear, and the focusing cam drives the positive lens F on the lens base F to move through the focusing guide pin, so that focusing of the optical system is completed.
In this embodiment, the optical structure formed by the lens group achieves the following optical indexes:
the working wave band is as follows: 8-12 μm;
focal length: f' =25-225 mm;
a detector: the long-wave infrared non-refrigeration type is 640 multiplied by 512, 17 mu m;
field angle 24.1 ° × 19.2 ° ~ 2.8 ° × 2.2 °;
relative pore diameter D/f': 1.2-1.5;
can be matched with a long-wave infrared uncooled 640 multiplied by 512, 17 μm detector to carry out the live recording and monitoring tasks.
In this implementation, the specific parameters of each lens are as follows:
the above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (6)
1. A high zoom continuous zoom lens is characterized by comprising a lens barrel, wherein a positive lens A, a negative lens B, a positive lens C, a negative lens D, a positive lens E and a positive lens F are sequentially arranged in the lens barrel along the incident direction of light rays from left to right, the air interval between the positive lens A and the negative lens B is 15.37 ~ 96.66.66 mm, the air interval between the negative lens B and the positive lens C is 5.23 ~ 133.55 mm, the air interval between the positive lens C and the negative lens D is 5.35 ~ 52.02mm, the air interval between the negative lens D and the positive lens E is 5.45mm, and the air interval between the positive lens E and the positive lens F is 40.22 ~ 46.92.92 mm.
2. A high magnification zoom lens system as described in claim 1, wherein: the lens cone comprises a front lens cone and a rear lens cone which are connected in sequence, wherein a zoom cam is sleeved on the front lens cone, a focusing cam is sleeved on the rear lens cone, matched zoom cam grooves are formed in the periphery of the front lens cone and the periphery of the zoom cam, and matched focusing cam grooves are formed in the periphery of the rear lens cone and the periphery of the focusing cam;
the positive lens A is arranged in a lens base A, the front side of the positive lens A is provided with a pressing ring A, the front ends of the lens base A and the front lens cone are connected through threads, the negative lens B is arranged in the lens base B, the front side of the negative lens B is provided with a pressing ring B, the lens base B is arranged on a zooming carriage, the zooming carriage is arranged in the front lens cone, the periphery of the zooming carriage is provided with a zooming guide pin which is positioned in a zooming cam groove of the front lens cone and a zooming cam, the negative lens C is arranged in the lens base C, the rear side of the negative lens C is provided with a pressing ring C, the lens base C is arranged on a compensating carriage, the compensating carriage is arranged in the front lens cone, the periphery of the compensating carriage is provided with a compensating guide pin which is positioned in a zooming cam groove of the front lens cone and the zooming cam, the periphery of the front end of the front lens cone is provided with a motor frame A, the motor frame A is provided with a zooming motor, and, the periphery of the zoom cam is provided with a gear part in meshing transmission with the zoom gear;
negative lens D, positive lens E installs the inside front end in the lens cone of back, negative lens D, be provided with the space ring between the positive lens E, negative lens D front side is provided with clamping ring D, positive lens F installs in microscope base F, positive lens F rear side is provided with clamping ring F, microscope base F installs the rear portion in the lens cone of back, microscope base F periphery is provided with the focusing and leads the nail, the focusing is led the nail and is located the back lens cone, the focusing cam groove of focusing cam, motor frame B is installed to back lens cone rear end periphery, install the focusing motor on the motor frame B, install the focusing gear on the output shaft of focusing motor, focusing cam periphery is provided with the gear portion with focusing gear meshing transmission.
3. A high magnification zoom lens system as described in claim 2, wherein: a sealing ring is arranged between the lens base A and the main lens cone.
4. A high magnification zoom lens system as described in claim 2, wherein: the microscope base B is locked on the zooming sliding frame through screws, and the microscope base C is locked on the compensation sliding frame through screws.
5. A high magnification zoom lens system as described in claim 2, wherein: the zoom guide pin is provided with a roller which is positioned in the zoom cam groove.
6. A high magnification zoom lens system as described in claim 2, wherein: wedge-shaped grooves are formed in two ends of the inner side of the zoom cam, and steel balls are filled in the wedge-shaped grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914573.3U CN209979923U (en) | 2019-06-18 | 2019-06-18 | High zoom continuous zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914573.3U CN209979923U (en) | 2019-06-18 | 2019-06-18 | High zoom continuous zoom lens |
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| CN209979923U true CN209979923U (en) | 2020-01-21 |
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| CN201920914573.3U Active CN209979923U (en) | 2019-06-18 | 2019-06-18 | High zoom continuous zoom lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174754A (en) * | 2019-06-18 | 2019-08-27 | 福建福光天瞳光学有限公司 | High zoom continuous magnification lens and focus adjustment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174754A (en) * | 2019-06-18 | 2019-08-27 | 福建福光天瞳光学有限公司 | High zoom continuous magnification lens and focus adjustment method |
| CN110174754B (en) * | 2019-06-18 | 2024-03-05 | 福建福光天瞳光学有限公司 | High zoom continuous zoom lens and focusing method |
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