CN209343031U - A kind of short focus compact focusing motor-driven lens structure - Google Patents
A kind of short focus compact focusing motor-driven lens structure Download PDFInfo
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- CN209343031U CN209343031U CN201822224291.9U CN201822224291U CN209343031U CN 209343031 U CN209343031 U CN 209343031U CN 201822224291 U CN201822224291 U CN 201822224291U CN 209343031 U CN209343031 U CN 209343031U
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- pressing ring
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Abstract
The utility model relates to a kind of short focus compact focusing motor-driven lens structures, the optical system of the camera lens includes along the light positive lens A that incident direction is set gradually from front to back, negative lens B, positive lens C, the mechanical structure of the camera lens includes the A piece pressing ring for being set to the front end positive lens A to fixed positive lens A, the B piece microscope base to fixed negative lens B is arranged in the periphery negative lens B, the rear end negative lens B is provided with B piece pressing ring, the C piece microscope base positive lens C is fixedly mounted is arranged in the periphery positive lens C, the front end positive lens C is provided with C piece pressing ring, in A piece pressing ring, B piece microscope base, C piece microscope base periphery is arranged with body tube, body tube periphery is provided with the focusing cam to adjust the back-and-forth motion of B piece microscope base.The utility model lamps structure is compact, camera lens overall length length is short, easy to carry, realizes the layout that camera lens and related elements are completed in minimum space.
Description
Technical field
The present invention relates to a kind of short focus compact focusing motor-driven lens structures.
Background technique
With the development of science and technology, infrared imagery technique has been widely used in fields such as national defence, industry, medical treatment.It is infrared
Detecting has certain ability for penetrating the abilities such as cigarette, mist, haze, snow and identification camouflage, not by the strong light in battlefield, flash of light interference and
Remote, round-the-clock observation, the target acquisition being particularly suitable under night and bad-weather condition may be implemented in blinding.
Temperature can not only impact the refractive index of optical material and also can cause to expand with heat and contract with cold to lens barrel material, cause light
Focal power variation and optimum image plane shift.Quality of optical imaging is reduced, image is smudgy, and contrast decline needs artificial
Focusing, with the variation of compensation temperature, with intelligence, the electrified market demand, traditional small focal length lens, by the master of people
Seeing resolution progress lens focusing can no longer meet the violent scene of the Changes in weather such as modern navigation, transport.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of short focus compact focusing motor-driven lens knots
Structure, it is compact-sized, lens construction length is short, easy to carry, it can be suitable with 640 × 512,17 μm of detectors of LWIR Uncooled
Match, carry out document recording and monitor task, while cost of manufacture is cheap, is suitble to large-scale production.
The present invention is realized using following scheme: a kind of short focus compact focusing motor-driven lens structure, the optics of the camera lens
System include along the light positive lens A that incident direction is set gradually from front to back, negative lens B, positive lens C, the positive lens A and
Airspace between negative lens B is 2.95mm, and the airspace between negative lens B and positive lens C is 21.35mm.
Further, the mechanical structure of the camera lens includes the A piece for being set to the front end positive lens A to fixed positive lens A
Pressing ring is arranged with the B piece microscope base to fixed negative lens B in the periphery negative lens B, the rear end negative lens B is provided with B piece pressing ring,
It is arranged with the C piece microscope base positive lens C is fixedly mounted in the periphery positive lens C, the front end positive lens C is provided with C piece pressing ring,
A piece pressing ring, B piece microscope base, C piece microscope base periphery are arranged with body tube, are provided in body tube periphery to before and after adjusting B piece microscope base
Mobile focusing cam, is provided with retaining screw on focusing cam, and C piece microscope base rear end is provided with attachment base.
Further, it is provided with motor rack and microswitch on body tube, motor and current potential are provided on motor rack
Device, the motor rack can limit the axial displacement of focusing cam, and the microswitch quantity is two, respectively symmetrically be fixed on master
The two sides of lens barrel.
Further, it is equipped with focusing cam, body tube and B piece microscope base on focusing cam, body tube and B piece microscope base
The focusing guide pin of connection.
Compared with prior art, the invention has the following advantages: structure of the invention is compact, lens construction length is short,
Layout that is easy to carry, can completing in minimum space camera lens and related elements, has greatly reduced the overall dimensions of camera lens,
And can be adapted to 640 × 512,17 μm of detectors of LWIR Uncooled, document recording and monitor task are carried out, is fabricated to simultaneously
This is cheap, is suitble to large-scale production.
To can be more clearly understood the above objects, features and advantages of the present invention, with reference to the accompanying drawing to the present invention
Specific embodiment elaborate.
Detailed description of the invention
Fig. 1 is the optical lens machine internal structural schematic diagram of the utility model embodiment.
Fig. 2 is the optical lens electric structure schematic diagram of the utility model embodiment.
In figure: 1-B piece microscope base；2-A piece pressing ring；3- body tube；4- focusing cam；5-B piece pressing ring；6-C piece microscope base；7-C
Piece pressing ring；8- attachment base；9- positive lens C；10- negative lens B；11- positive lens A；12- retaining screw；13- microswitch；14- motor
Frame；15- motor；16- potentiometer；17- focusing guide pin.
Specific embodiment
As shown in Figure 1 and 2, a kind of short focus compact focusing motor-driven lens structure, the optical system of the camera lens includes along light
The line positive lens A that incident direction is set gradually from front to back, negative lens B, positive lens C, between the positive lens A and negative lens B
Airspace be 2.95mm, the airspace between negative lens B and positive lens C is 21.35mm.
In the present embodiment, the mechanical structure of the camera lens includes the A for being set to the front end positive lens A to fixed positive lens A
Piece pressing ring is arranged with the B piece microscope base to fixed negative lens B in the periphery negative lens B, the rear end negative lens B is provided with B piece pressure
Circle, is arranged with the C piece microscope base positive lens C is fixedly mounted in the periphery positive lens C, the front end positive lens C is provided with C piece pressure
Circle, is arranged with body tube in A piece pressing ring, B piece microscope base, C piece microscope base periphery, is provided in body tube periphery to adjust B piece mirror
The focusing cam that seat is moved forward and backward, retaining screw is provided on focusing cam, C piece microscope base rear end is provided with attachment base.
In the present embodiment, it is provided with motor rack and microswitch on body tube, motor and electricity are provided on motor rack
Position device, the motor rack can limit the axial displacement of focusing cam, and the microswitch quantity is two, respectively symmetrically be fixed on
The two sides of body tube.
In the present embodiment, it is equipped on focusing cam, body tube and B piece microscope base by focusing cam, body tube and B piece mirror
The focusing guide pin of seat connection.
Specific implementation process:
(1) during installation, first B piece microscope base is fixedly connected by focusing guide pin with body tube and focusing cam, then will
Negative lens B is fitted into B piece microscope base, and is fixed, positive lens A is then placed in body tube front end and led to by B piece pressing ring
It crosses A piece pressing ring to be fixed, then positive lens C is placed in C piece microscope base and installation fixation, and handle is carried out by C piece pressing ring
Assembled C piece microscope base is installed to primary mirror tube rear end, and attachment base is then installed to C piece microscope base rear end again, complete positive lens A,
The assembling of negative lens B and positive lens C may be implemented parallel group in the assembling process of positive lens A, negative lens B and positive lens C
Dress, it is convenient and efficient, greatly improve assembly efficiency；
(2) at work, motor is controlled forward or reverse by pressing the microswitch of body tube two sides, motor rotates forward
Or reversion drives focusing cam forward or reverse, and then B piece microscope base is made to move forward or move backward, and realizes the tune of camera lens
It is burnt.
Aforesaid operations process and software and hardware configuration are only used as presently preferred embodiments of the present invention, are not intended to limit the present invention
The scope of the patents, it is all using equivalents made by description of the invention and accompanying drawing content, be applied directly or indirectly in phase
Technical field is closed, is included within the scope of the present invention.
Claims (4)
- The motor-driven lens structure 1. a kind of short focus compact is focused, it is characterised in that: the optical system of the camera lens includes along light Incident direction is set gradually from front to back positive lens A, negative lens B, positive lens C, between the positive lens A and negative lens B Airspace is 2.95mm, and the airspace between negative lens B and positive lens C is 21.35mm.
- The motor-driven lens structure 2. short focus compact according to claim 1 is focused, it is characterised in that: the machinery of the camera lens Structure includes the A piece pressing ring for being set to the front end positive lens A to fixed positive lens A, is arranged in the periphery negative lens B to fixation The B piece microscope base of negative lens B is provided with B piece pressing ring in the rear end negative lens B, is arranged in the periphery positive lens C to be fixedly mounted just The C piece microscope base of lens C is provided with C piece pressing ring in the front end positive lens C, is arranged in A piece pressing ring, B piece microscope base, C piece microscope base periphery Body tube is provided with the focusing cam to adjust the back-and-forth motion of B piece microscope base in body tube periphery, is provided on focusing cam Retaining screw is provided with attachment base in C piece microscope base rear end.
- The motor-driven lens structure 3. short focus compact according to claim 2 is focused, it is characterised in that: be arranged on body tube There are motor rack and microswitch, motor and potentiometer are provided on motor rack, the motor rack can limit the axis of focusing cam To displacement, the microswitch quantity is two, is respectively symmetrically fixed on the two sides of body tube.
- The motor-driven lens structure 4. short focus compact according to claim 2 is focused, it is characterised in that: in focusing cam, master The focusing guide pin for connecting focusing cam, body tube with B piece microscope base is equipped on lens barrel and B piece microscope base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224291.9U CN209343031U (en) | 2018-12-28 | 2018-12-28 | A kind of short focus compact focusing motor-driven lens structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224291.9U CN209343031U (en) | 2018-12-28 | 2018-12-28 | A kind of short focus compact focusing motor-driven lens structure |
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| Publication Number | Publication Date |
|---|---|
| CN209343031U true CN209343031U (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822224291.9U Active CN209343031U (en) | 2018-12-28 | 2018-12-28 | A kind of short focus compact focusing motor-driven lens structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521555A (en) * | 2018-12-28 | 2019-03-26 | 福建福光天瞳光学有限公司 | A kind of short focus compact focusing motor-driven lens structure and its working method |
-
2018
- 2018-12-28 CN CN201822224291.9U patent/CN209343031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521555A (en) * | 2018-12-28 | 2019-03-26 | 福建福光天瞳光学有限公司 | A kind of short focus compact focusing motor-driven lens structure and its working method |
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