CN209842208U - Lightweight continuous zoom lens - Google Patents
Lightweight continuous zoom lens Download PDFInfo
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- CN209842208U CN209842208U CN201920123231.XU CN201920123231U CN209842208U CN 209842208 U CN209842208 U CN 209842208U CN 201920123231 U CN201920123231 U CN 201920123231U CN 209842208 U CN209842208 U CN 209842208U
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Abstract
The utility model provides a lightweight zoom lens in succession, including the camera lens body, this internal positive lens A, negative lens B, positive lens C, negative lens D and the positive lens E of having set gradually along light incident direction of following of camera lens. The utility model discloses simple structure, reasonable in design, compact structure, convenient to carry, the luminousness is high, and the cost of manufacture is low, has the practicality.
Description
Technical Field
The utility model relates to a lightweight zoom lens in succession.
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.
Although the conventional continuous zoom infrared lens has a continuous zoom function, the following defects are mostly existed: 1. the structure is complex, the weight is heavy, and the volume is large; 2. parcoking is greatly affected by temperature, and the regional applicability is poor; 3. the stability and reliability of the zoom mechanism are not good. The common continuous zooming infrared lens has poor matching precision due to large zooming mechanism and low processing precision, large motion resistance and poor stability and reliability of an optical axis in the zooming process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is to provide a lightweight zoom lens in succession, simple structure and application scope are wide.
The utility model discloses a concrete implementation scheme is: the utility model provides a lightweight zoom lens in succession, includes the camera lens body, positive lens A, negative lens B, positive lens C, negative lens D and positive lens E have set gradually along the light incidence direction in the camera lens body.
Further, the lens body comprises an A lens base, the positive lens A is installed on the A lens base, the rear end of the A lens base is in threaded connection with a main lens cone, and a waterproof sealing ring is installed between the A lens base and the main lens cone.
Furthermore, a zooming sliding frame is arranged on the inner side of the main lens barrel, a negative lens B is mounted on the zooming sliding frame, a zooming cam is further sleeved on the zooming sliding frame, a compensation sliding frame is sleeved on the zooming cam, and the compensation sliding frame is connected with the main lens barrel.
Furthermore, the compensation sliding frame and the zooming sliding frame are provided with zooming guide nails, a pair of rollers is sleeved on the zooming guide nails, the zooming cam is provided with a sliding groove in sliding fit with one of the rollers, and the main lens barrel is provided with a moving groove in sliding fit with the other roller.
Furthermore, a zooming motor is fixedly connected to the main lens barrel, and a zooming motor gear meshed with the zooming cam is coaxially and fixedly connected to an output shaft of the zooming motor.
Further, the lens body comprises a rear group lens barrel located at the rear end, a negative lens D is fixedly connected to the rear group lens barrel, an E-piece lens base is arranged on the inner side of the rear group lens barrel, a positive lens E is fixedly connected to the E-piece lens base, a focusing cam is sleeved on the E-piece lens base, a focusing motor driving the focusing cam to rotate and drive the positive lens E to move is fixedly connected to the rear group lens barrel, and a focusing motor gear meshed with the focusing cam is coaxially and fixedly connected to an output shaft of the focusing motor.
Furthermore, the positive lens A, the negative lens B, the positive lens C, the negative lens D and the positive lens E are all aspheric lenses and are made of single crystal germanium materials.
Furthermore, the zooming cam is also provided with a wedge-shaped groove, steel balls are filled in the wedge-shaped groove, and the zooming cam is also provided with a zooming cam pressing ring.
Compared with the prior art, the utility model discloses following beneficial effect has: the device has the advantages of reasonable design, simple structure, wide application range, compact structure, short structural length of the lens, convenience in carrying and high light transmittance, can efficiently carry out live recording and monitoring tasks by lengthening the rear focus in optical design, is low in manufacturing cost and is suitable for large-scale production.
Drawings
Fig. 1 is a first schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-A piece pressing ring, 2-A piece lens base, 3-sealing ring, 4-main lens cone, 5-zoom cam, 6-compensation sliding frame, 7-rear group lens cone, 8-focusing cam, 9-E piece lens base, 10-E piece pressing ring, 11-focusing cam retainer ring, 12-connecting base, 13-positive lens E, 14-negative lens D, 15-zoom cam retainer ring, 16-steel ball, 17-D piece pressing ring, 18-C piece pressing ring, 19-positive lens C, 20-zoom sliding frame, 21-B piece pressing ring, 22-negative lens B, 23-positive lens A, 24-zoom motor gear, 25-focusing motor gear, 26-zoom motor, and 27-focusing motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the present embodiment, as shown in fig. 1 ~ 2, a light-weight zoom lens system includes a lens body, and a positive lens a23, a negative lens B22, a positive lens C19, a negative lens D14, and a positive lens E13 are sequentially disposed in the lens body along a light incident direction.
In this embodiment, the lens body includes an a lens base 2, the positive lens a23 is installed on the a lens base 2, the rear end of the a lens base 2 is connected with a main lens barrel 4 through a thread, and a waterproof sealing ring 3 is installed between the a lens base 2 and the main lens barrel 4.
In this embodiment, a zoom carriage 20 is arranged on the inner side of the main barrel 4, a negative lens B22 is mounted on the zoom carriage 20, a zoom cam 5 is further sleeved on the zoom carriage 20, a compensation carriage 6 is sleeved on the zoom cam 5, and the compensation carriage 6 is connected with the main barrel 4; in addition, the A-piece lens base and the main lens barrel are connected through threads, and an air distance between the A-piece lens base and the main lens barrel is rotated through the threads.
In this embodiment, the zoom carriage 20 and the compensation carriage 6 are each provided with a zoom guide pin, a pair of rollers are sleeved on the zoom guide pin, the zoom cam has a sliding groove in which one of the rollers is slidably fitted, and the main barrel has a moving groove in which the other roller is slidably fitted.
In this embodiment, the main barrel 4 is fixedly connected with a zoom motor 26, and an output shaft of the zoom motor 26 is coaxially and fixedly connected with a zoom motor gear 24 engaged with the zoom cam 5.
In this embodiment, the camera lens body is including the rear group lens barrel 7 that is located the rear end, fixedly connected with negative lens D14 on the rear group lens barrel 7, rear group lens barrel 7 inboard is provided with E piece microscope base 9, positive lens E13 fixed connection is on E piece microscope base 9, the cover is equipped with focusing cam 8 on the E piece microscope base 9, the rotatory focusing motor that drives positive lens E13 motion of fixedly connected with drive focusing cam 8 on the rear group lens barrel 7, coaxial fixedly connected with and focusing cam intermeshing's focusing motor gear on the focusing motor output shaft.
In this embodiment, the positive lens a23, the negative lens B22, the positive lens C19, the negative lens D14, and the positive lens E13 are all aspheric lenses, and all adopt single crystal germanium materials.
In this embodiment, the zoom cam 5 further has a wedge-shaped groove, steel balls 16 are filled in the wedge-shaped groove, and the zoom cam 5 is further provided with a zoom cam pressing ring 15 for fixing the zoom cam.
In this embodiment, a connecting seat 12 is disposed at the rear end of the focusing cam 8, and a focusing cam retaining ring 11 is disposed between the angle adjusting cam 8 and the connecting seat 12.
In this embodiment, the positive lens C19 is fixedly mounted on the compensating carriage 6 through a C-plate pressing ring 18, the negative lens B22 is fixedly mounted on the zoom carriage 20 through a B-plate pressing ring 21, the positive lens a23 is fixedly mounted on the a-plate lens base 2 through an a-plate pressing ring 1, the negative lens D14 is fixedly mounted on the rear group lens barrel 7 through a D-plate pressing ring 17, and the positive lens E13 is fixedly mounted on the E-plate lens base 9 through an E-plate pressing ring 10.
In this embodiment, the optical structure formed by the positive lens a, the negative lens B, the positive lens C, the negative lens D, and the positive lens E achieves the following optical indexes:
the working wave band is as follows: 8-12 μm;
focal length: f' =25-75 mm;
a detector: the long-wave infrared uncooled type is 1024 multiplied by 768 with 14 mu m;
field angle 25.04 ° × 33.84 ° ~ 8.16.16 ° × 10.82 °;
relative pore diameter D/f': 1.0-1.2.
In this embodiment, the parameters of the positive lens a, the negative lens B, the positive lens C, the negative lens D, and the positive lens E are as follows:
in the above table, S1 is the parameter of the lens surface viewed from left to right in the figure of the present embodiment, and S2 is the parameter of the lens surface viewed from right to left.
In the embodiment, when the zoom lens is used, the negative lens B and the positive lens C are driven and adjusted to move through the zoom motor, so that zooming is finished; and meanwhile, driving a focusing motor to drive the positive lens E to move to finish focusing. The utility model discloses simple structure, reasonable in design, compact structure, camera lens structural length are short, convenient to carry, high light transmittance, and in optical design, burnt after the extension can high-efficiently carry out live record and monitor task, and preparation low cost is fit for the large-scale production.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (5)
1. A light-weight continuous zoom lens is characterized by comprising a lens body, wherein a positive lens A, a negative lens B, a positive lens C, a negative lens D and a positive lens E are sequentially arranged in the lens body along the incident direction of light rays, the lens body comprises an A lens base, the positive lens A is arranged on the A lens base, the rear end of the A lens base is in threaded connection with a main lens cone, a waterproof sealing ring is arranged between the A lens seat and the main lens cone, the inner side of the main lens cone is provided with a zooming sliding frame, the zooming carriage is provided with a negative lens B, the zooming carriage is also sleeved with a zooming cam, the zoom cam is sleeved with a compensation sliding frame which is connected with a main lens cone, the main lens cone is fixedly connected with a zoom motor, and a zooming motor gear meshed with the zooming cam is coaxially and fixedly connected to the output shaft of the zooming motor.
2. The light-weighted zoom lens system of claim 1, wherein the compensation carriage and the zoom carriage are each provided with a zoom pin, the zoom pin is sleeved with a pair of rollers, the zoom cam has a sliding groove in which one of the rollers is slidably engaged, and the main barrel has a moving groove in which the other roller is slidably engaged.
3. The light-weight zoom lens system of claim 2, wherein the lens body includes a rear lens barrel located at the rear end, a negative lens D is fixedly connected to the rear lens barrel, an E-lens base is disposed inside the rear lens barrel, a positive lens E is fixedly connected to the E-lens base, a focusing cam is sleeved on the E-lens base, a focusing motor for driving the focusing cam to rotate and driving the positive lens E to move is fixedly connected to the rear lens barrel, and a focusing motor gear meshed with the focusing cam is coaxially and fixedly connected to an output shaft of the focusing motor.
4. The light-weight zoom lens system of claim 2 or 3, wherein the positive lens A, the negative lens B, the positive lens C, the negative lens D and the positive lens E are aspheric lenses, and are made of single-crystal germanium materials.
5. The light-weight continuous zoom lens as claimed in claim 1, wherein the zoom cam is further provided with a wedge groove filled with steel balls, and the zoom cam is further provided with a zoom cam pressing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123231.XU CN209842208U (en) | 2019-01-24 | 2019-01-24 | Lightweight continuous zoom lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920123231.XU CN209842208U (en) | 2019-01-24 | 2019-01-24 | Lightweight continuous zoom lens |
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| CN209842208U true CN209842208U (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633878A (en) * | 2019-01-24 | 2019-04-16 | 福建福光天瞳光学有限公司 | A kind of lightweight continuous magnification lens design and its assembly method |
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2019
- 2019-01-24 CN CN201920123231.XU patent/CN209842208U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633878A (en) * | 2019-01-24 | 2019-04-16 | 福建福光天瞳光学有限公司 | A kind of lightweight continuous magnification lens design and its assembly method |
| CN109633878B (en) * | 2019-01-24 | 2024-04-16 | 福建福光天瞳光学有限公司 | Assembling method of lightweight continuous zoom lens |
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