CN203337910U - Small-size camera lens having high light gathering power and large zoom ratio and with manually changeable focal length, focus and iris - Google Patents

Small-size camera lens having high light gathering power and large zoom ratio and with manually changeable focal length, focus and iris Download PDF

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Publication number
CN203337910U
CN203337910U CN2013203924642U CN201320392464U CN203337910U CN 203337910 U CN203337910 U CN 203337910U CN 2013203924642 U CN2013203924642 U CN 2013203924642U CN 201320392464 U CN201320392464 U CN 201320392464U CN 203337910 U CN203337910 U CN 203337910U
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CN
China
Prior art keywords
lens
zoom
ring
diaphragm
nail
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Expired - Fee Related
Application number
CN2013203924642U
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Chinese (zh)
Inventor
林春生
汤子鑫
肖维军
刘辉
陈鹏
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Fujian Forecam Optics Co Ltd
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Fujian Forecam Optics Co Ltd
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Priority to CN2013203924642U priority Critical patent/CN203337910U/en
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Publication of CN203337910U publication Critical patent/CN203337910U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a small-size camera lens having high light gathering power and large zoom ratio and with manually changeable focal length, focus and iris. According to an optical structure of the small-size camera lens, a front fixed group A with positive focal power, a zoom group B with negative focal power, a compensation group C with negative focal power, an iris diaphragm assembly D and a rear fixed group E with positive focal power are arranged in the direction of light beams from left to right successively. The front fixed group A is provided with a biconvex lens A-1 and a first gluing group successively. The zoom group is provided with a negative meniscus lens B-1 and a second gluing group. The compensation group C is provided with a third gluing group. The front part of the rear fixed group E is provided with a biconvex lens E-1 and a biconvex lens E-2, the middle part of the rear fixed group E is provided with a fourth gluing group and a positive meniscus lens E-5 and the rear part of the rear fixed group E is provided with a negative meniscus E-6 and a biconvex lens E-7. The small-size camera lens has functions of manual continuous zooming, manual focusing, manual dimming and the like. The small-size camera can be used in an environment with adequate light, and also can realize high resolution in an environment with poor light.

Description

Miniaturization, high light power, large multiple proportions manual three variable pick-up lenss
Technical field
The utility model relates to a kind of optical pick-up apparatus of video technique, particularly a kind of miniaturization, high light power, large multiple proportions manual three variable pick-up lenss.
Background technology
At present, the pick-up lens that is applicable to routine monitoring requires that range of observation is large, observation time is long, volume is little, quality is light, sharpness is high, can make the panorama of large regional little multiplying power to target and observe, and can do again the amplification observation of the large multiplying power in zonule.Traditional mechanical compensation formula zoom lens's optical texture form consists of front fixedly group, zoom group, compensation group and four constituent elements of rear fixedly group, but ubiquity that overall volume is large, the photokinesis monitoring range is narrow, in shortcomings such as the low light environment hypograph are of poor quality.Existing zoom lens is limited to overall dimensions, simultaneously in order to reach higher picture quality, thereby dwindles the relative aperture of camera lens, causes the light signal that enters pick-up lens to reduce, and has limited observing capacity.
The utility model content
The purpose of this utility model is to overcome above-mentioned defect, and the technical problems to be solved in the utility model is to provide a kind of miniaturization, high light power, large multiple proportions manual three variable pick-up lenss.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of miniaturization, high light power, large multiple proportions manual three variable pick-up lenss, in the optical texture of described pick-up lens along light from left to right incident direction to be respectively equipped with focal power be positive front fixedly group A, focal power is negative zoom group B, focal power is negative compensation group C, iris assembly D and focal power are positive rear fixedly group E, the first gummed group that described front fixedly group A is provided with successively biconvex lens A-1 and is connected airtight by negative crescent moon lens A-2 and positive crescent moon lens A-3, the second gummed group that described zoom group B is provided with successively negative crescent moon lens B-1 and is connected airtight by biconcave lens B-2 and biconvex lens B-3, described compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixedly group E front portion is provided with biconvex lens E-1 and biconvex lens E-2, middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, rear portion is provided with negative crescent moon lens E-6 and biconvex lens E-7.
In further technical scheme, airspace between described front fixedly group A and zoom group B is 1.45 ~ 24.7mm, airspace between described zoom group B and compensation group C is 56.0 ~ 1.3mm, and the airspace between described compensation group C and rear fixedly group E is 1.8mm.
In further technical scheme, the biconvex lens A-1 in described front fixedly group A and the airspace between the first gummed group are 0.5mm.
In further technical scheme, the negative crescent moon lens B-1 in described zoom group B and the airspace between the second gummed group are 5.5mm.
In further technical scheme, biconvex lens E-1 in described rear fixedly group E and the airspace between biconvex lens E-2 are 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described the 4th gummed group and positive crescent moon lens E-5 is 0.15mm, airspace between described positive crescent moon lens E-5 and negative crescent moon lens E-6 is 4.0mm, and the airspace between described negative crescent moon lens E-6 and biconvex lens E-7 is 19.5mm.
Compared with prior art, the utlity model has following beneficial effect: the utility model uses that mechanical compensation method and steepest zoom cam curve designing technique have designed that a kind of relative aperture reaches 1: 1.9,33.2 ° of wide-angle side field angle, the miniaturization of 1.7 ° of telescope end field angle, high light power, large multiple proportions Varifocal pick-up lens, there is the aperture larger than ordinary optical camera lens, higher resolution, wider photokinesis monitoring range; This miniaturization, high light power, large multiple proportions Varifocal pick-up lens have the functions such as manual zoom, manual focusing, hand-operating light, not only under the environment of good weather, for video camera, provide photosignal, produce the video image of high resolution, and, under low light environment, still there is high resolving power and utilize mechanical driving device to realize the functions such as manual varifocal, manual focusing, hand-operating light.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The accompanying drawing explanation
The structural drawing that Fig. 1 is optical system.
The outside drawing that Fig. 2 is pick-up lens.
The structural drawing that Fig. 3 is pick-up lens.
The cut-open view that Fig. 4 is A-A in Fig. 3.
In figure: fixing group clamp ring before 1-, fixation kit before 2-, 3-zoom assembly, the 4-cam cover, 5-cam cover locking nail, 6-zoom guide pin, the 7-focusing ring, the 8-retaining screw of focusing, the 9-body tube, the 10-cam, the 11-guide rod, the 12-compensation assembly, 13-compensates guide pin, the 14-zoom is dialled nail, 15-zoom regulating ring, 16-zoom regulating ring back-up ring, 17-zoom regulating ring back-up ring locking nail, the 18-diaphragm component is followed closely surely, the 19-diaphragm is dialled nail, 20-the first diaphragm seat, the 21-aperture setting ring, 22-diaphragm rotating ring, 23-diaphragm seat connects nail, the 24-diaphragm component, 25-the second diaphragm seat, after 26-, group connects nail, assembly after 27-, the moving nail of 28-diaphragm component, the front fixedly group of A-, the A-1-biconvex lens, A-2-bears the crescent moon lens, the positive crescent moon lens of A-3-, B-zoom group, B-1-bears crescent moon lens, B-2-biconcave lens, B-3-biconvex lens, C-compensation group, C-1-biconcave lens, the positive crescent moon lens of C-2-, D-iris assembly, fixing group after E-, E-1-biconvex lens, E-2-biconvex lens, the E-3-biconvex lens, E-4-biconcave lens, the positive crescent moon lens of E-5-, E-6-bears crescent moon lens, E-7-biconvex lens, F-target surface.
Embodiment
As shown in Figure 1, a kind of miniaturization, high light power, large multiple proportions manual three variable pick-up lenss, in the optical texture of described pick-up lens along light from left to right incident direction to be respectively equipped with focal power be positive front fixedly group A, focal power is negative zoom group B, focal power is negative compensation group C, iris assembly D and focal power are positive rear fixedly group E, the first gummed group that described front fixedly group A is provided with successively biconvex lens A-1 and is connected airtight by negative crescent moon lens A-2 and positive crescent moon lens A-3, the second gummed group that described zoom group B is provided with successively negative crescent moon lens B-1 and is connected airtight by biconcave lens B-2 and biconvex lens B-3, described compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixedly group E front portion is provided with biconvex lens E-1 and biconvex lens E-2, middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, rear portion is provided with negative crescent moon lens E-6 and biconvex lens E-7.
In the present embodiment, the airspace between described front fixedly group A and zoom group B is 1.45 ~ 24.7mm, and the airspace between described zoom group B and compensation group C is 56.0 ~ 1.3mm, and the airspace between described compensation group C and rear fixedly group E is 1.8mm; Biconvex lens A-1 in described front fixedly group A and the airspace between the first gummed group are 0.5mm; Negative crescent moon lens B-1 in described zoom group B and the airspace between the second gummed group are 5.5mm.
In the present embodiment, biconvex lens E-1 in described rear fixedly group E and the airspace between biconvex lens E-2 are 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described the 4th gummed group and positive crescent moon lens E-5 is 0.15mm, airspace between described positive crescent moon lens E-5 and negative crescent moon lens E-6 is 4.0mm, and the airspace between described negative crescent moon lens E-6 and biconvex lens E-7 is 19.5mm.
In the present embodiment, the optical texture of this pick-up lens has reached following optical index: (1) field angle: 2 ω=33.2 ° ~ 1.7 °; (2) zoom ratio: 20 times; (3) relative aperture: 1: 1.9; (4) minimum photographic distance: 3m; (5) applicable spectral line: 400 ~ 700 nm; (6) optics overall length: be less than 178mm;
As shown in Figure 2, the physical dimension φ of this pick-up lens * L is 68.5mm * 170mm, and its front end handwheel is focusing handwheel, and rotation front end handwheel, can make the front fixedly group of pick-up lens move, thereby the object distance of pick-up lens is changed from 3m ~ infinite distance; Handwheel in the middle of rotation, the zoom of this pick-up lens, compensation group are pressed the curvilinear motion of steepest zoom cam, thereby make focal length occur to change fast; It is that 1.9 scopes change from contract fully to the F number that rotation rear end handwheel can make aperture.
As shown in Figure 3, the focus adjusting mechanism of this pick-up lens comprises focusing ring 7, the body tube 9 that is positioned at the front fixation kit 2 of focusing ring 7 and is positioned at front fixation kit 2 rear sides, described front fixation kit 2 and focusing ring 7 by thread connection and by front fixedly group clamp ring 1 locking so that front fixation kit 2 is with together with focusing ring 7 connects firmly, described focusing ring 7 connects by the bull pitch thread with body tube 9 and is ground so that its screw thread motion is smooth and easy and there is no a vibration on axle in when assembling, offer guide groove on described body tube 9, be fixed with on described focusing ring 7 with guide groove and match the focusing retaining screw 8 that guides its relative body tube 9 for the helical movement, make focusing ring 7 to do relative motion with body tube 9 on axle within the specific limits.During use: left rotation and right rotation focusing ring 7 can make front fixation kit 2 seesaw with body tube 9 within the specific limits, thereby realize the purpose of manual focusing.
As shown in Figure 3, the zoom mechanism of this pick-up lens comprises zoom regulating ring 15, zoom assembly 3 and compensation assembly 12, described zoom regulating ring 15 is fixed on body tube 9 by zoom regulating ring back-up ring 16 and zoom regulating ring back-up ring locking nail 17, make the forward and reverse steady and smooth that rotatablely moves of zoom regulating ring 15 by regulating zoom regulating ring back-up ring 16, without clamping stagnation, described zoom assembly 3 and compensation assembly 12 are installed on two guide rods 11 and are slidably matched, described two guide rods 11 are fixed on respectively on body tube 9 by cam cover 4 symmetrically, be milled with 160 ° of zoom regulating tanks on described body tube 9, zoom is installed in described zoom regulating tank and dials nail 14, the end that described zoom is dialled nail 14 is fixed on cam 10 with screw thread, the other end is stuck in dialling in the nail groove of zoom regulating ring 15, described cam 10 external diameters grind and coordinate and be fixed in body tube 9 by cam cover 4 with body tube 9, requirement by the optical zoom equation of motion on described cam 10 is milled with zoom curved groove and compensated curve groove, be fixed with the zoom guide pin 6 matched with the zoom curved groove on described zoom assembly 3, be fixed with the compensation guide pin 13 matched with the compensated curve groove on described compensation assembly 12.When manual left rotation and right rotation zoom regulating ring 15 (rotating range is in 160 ° of zoom regulating tank scopes of body tube 9), zoom regulating ring 15 is dialled nail 14 by zoom makes cam 10 do the left rotation and right rotation motion, and cam 10 moves by the mode of zoom curved groove, compensated curve groove respectively by zoom curved groove, compensated curve groove and zoom guide pin 6, compensation guide pin 13 drive zoom assemblies 3, compensation assembly 12; Article two, playing a supporting role of the top guide rod 11 in guide rod 11, below guide rod 11 changes the direction of motion of zoom assembly 3, compensation assembly 12 together with cam path, makes it become the rectilinear motion of zoom assembly 3, compensation assembly 12 from rotatablely moving of cam 10; Realize that by left rotation and right rotation zoom regulating ring 15 zoom assembly 3, compensation assembly 12 are by rectilinear motion before and after zoom equation of motion work like this, thereby the focal length of system is changed.
As shown in Fig. 3 ~ 4, the aperture governor motion of this pick-up lens comprises aperture setting ring 21, 12 diaphragm components 24 and diaphragm rotating ring 22, described diaphragm rotating ring 22 is arranged on the first diaphragm seat 20 and connects nail 23 with the second diaphragm seat 25 and diaphragm seat and connects so that diaphragm rotating ring 22 smooth rotations, without clamping stagnation vibration phenomenon, described aperture setting ring 21 is arranged on the first diaphragm seat 20 and with the clamp ring of rear group of assembly 27 and compresses so that its smooth rotation, without clamping stagnation vibration phenomenon, be milled with 86 ° on described the first diaphragm seat 20 and dial the nail groove, in described group of nail groove, diaphragm is installed and dials nail 19, the end that described diaphragm is dialled nail 19 is fixed on diaphragm rotating ring 22 with screw thread, the other end is stuck in dialling in the nail draw-in groove of aperture setting ring 21, overlapped and the end of the diaphragm sheet of described diaphragm component 24 is surely followed closely 18 by diaphragm component and is installed on the determining in the nail hole of the first diaphragm seat 20, the other end moves nail 28 by diaphragm component and is installed in the straight trough of diaphragm rotating ring 22.Manual left rotation and right rotation aperture setting ring 21, diaphragm is dialled nail 19 and is moved dialling in the nail groove of the first diaphragm seat 20, and drive diaphragm rotating ring 22 and do the left rotation and right rotation motion, diaphragm rotating ring 22 left rotation and right rotation drive the moving nail 28 of diaphragm component and move in the straight trough of diaphragm rotating ring 22, and rotate with diaphragm rotating ring 22; So just driving diaphragm component 24 take diaphragm component and surely follows closely 18 and do circular motion as the center of circle, the diaphragm component that 12 diaphragm components 24 be take is separately simultaneously surely followed closely 18 and is done circular motion as the center of circle, produce diaphragm component 24 and take the open and close movement that optical axis is the center of circle, thereby control the size of aperture.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (8)

1. a miniaturization, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: in the optical texture of described pick-up lens along light from left to right incident direction to be respectively equipped with focal power be positive front fixedly group A, focal power is negative zoom group B, focal power is negative compensation group C, iris assembly D and focal power are positive rear fixedly group E, the first gummed group that described front fixedly group A is provided with successively biconvex lens A-1 and is connected airtight by negative crescent moon lens A-2 and positive crescent moon lens A-3, the second gummed group that described zoom group B is provided with successively negative crescent moon lens B-1 and is connected airtight by biconcave lens B-2 and biconvex lens B-3, described compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixedly group E front portion is provided with biconvex lens E-1 and biconvex lens E-2, middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, rear portion is provided with negative crescent moon lens E-6 and biconvex lens E-7.
2. miniaturization according to claim 1, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the airspace between described front fixedly group A and zoom group B is 1.45 ~ 24.7mm, airspace between described zoom group B and compensation group C is 56.0 ~ 1.3mm, and the airspace between described compensation group C and rear fixedly group E is 1.8mm.
3. miniaturization according to claim 1 and 2, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the biconvex lens A-1 in described front fixedly group A and the airspace between the first gummed group are 0.5mm.
4. miniaturization according to claim 1 and 2, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the negative crescent moon lens B-1 in described zoom group B and the airspace between the second gummed group are 5.5mm.
5. miniaturization according to claim 1 and 2, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the biconvex lens E-1 in described rear fixedly group E and the airspace between biconvex lens E-2 are 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described the 4th gummed group and positive crescent moon lens E-5 is 0.15mm, airspace between described positive crescent moon lens E-5 and negative crescent moon lens E-6 is 4.0mm, airspace between described negative crescent moon lens E-6 and biconvex lens E-7 is 19.5mm.
6. miniaturization according to claim 1, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the focus adjusting mechanism of described pick-up lens comprises focusing ring, be positioned at the front fixation kit of focusing ring and the body tube that is positioned at front fixation kit rear side, described front fixation kit and focusing ring by thread connection and by front fixedly group clamp ring locking so that front fixation kit is with together with focusing ring connects firmly, described focusing ring connects by the bull pitch thread with body tube, offer guide groove on described body tube, be fixed with on described focusing ring with guide groove and match the focusing retaining screw that guides its relative body tube for the helical movement.
7. miniaturization according to claim 1, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the zoom mechanism of described pick-up lens comprises the zoom regulating ring, zoom assembly and compensation assembly, described zoom regulating ring is fixed on body tube by zoom regulating ring back-up ring and zoom regulating ring back-up ring locking nail, described zoom assembly and compensation assembly are installed on two guide rods and are slidably matched, described two guide rods are fixed on body tube respectively by cam cover symmetrically, offer the zoom regulating tank on described body tube, in described zoom regulating tank, zoom is installed and dials nail, the end that described zoom is dialled nail is fixed on cam, the other end is stuck in dialling in the nail groove of zoom regulating ring, described cam is fixed in body tube by cam cover, offer zoom curved groove and compensated curve groove on described cam, be fixed with the zoom guide pin matched with the zoom curved groove on described zoom assembly, be fixed with the compensation guide pin matched with the compensated curve groove on described compensation assembly.
8. miniaturization according to claim 1, high light power, large multiple proportions manual three variable pick-up lenss, it is characterized in that: the aperture governor motion of described pick-up lens comprises aperture setting ring, diaphragm component and diaphragm rotating ring, described diaphragm rotating ring is arranged on the first diaphragm seat and connects nail with the second diaphragm seat and diaphragm seat and connects, described aperture setting ring is arranged on the first diaphragm seat and with the clamp ring of rear group of assembly and compresses, offer on described the first diaphragm seat and dial the nail groove, in described group of nail groove, diaphragm is installed and dials nail, the end that described diaphragm is dialled nail is fixed on the diaphragm rotating ring, the other end is stuck in dialling in the nail draw-in groove of aperture setting ring, overlapped and the end of the diaphragm sheet of described diaphragm component is surely followed closely and is installed on the determining in the nail hole of the first diaphragm seat by diaphragm component, the other end moves nail by diaphragm component and is installed in the straight trough of diaphragm rotating ring.
CN2013203924642U 2013-07-03 2013-07-03 Small-size camera lens having high light gathering power and large zoom ratio and with manually changeable focal length, focus and iris Expired - Fee Related CN203337910U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336354A (en) * 2013-07-03 2013-10-02 福建福光数码科技有限公司 Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens
CN105116526A (en) * 2015-09-21 2015-12-02 福建福光股份有限公司 High-zoom-ratio continuous zooming television pick-up lens and control method thereof
CN106483644A (en) * 2016-12-16 2017-03-08 福建福光股份有限公司 38 times of super large zoom ratio Size Zoom TV camera lens
CN110119023A (en) * 2019-06-16 2019-08-13 福建福光股份有限公司 6000000 high-resolution zoom camera lenses

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336354A (en) * 2013-07-03 2013-10-02 福建福光数码科技有限公司 Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens
CN103336354B (en) * 2013-07-03 2015-06-17 福建福光数码科技有限公司 Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens
CN105116526A (en) * 2015-09-21 2015-12-02 福建福光股份有限公司 High-zoom-ratio continuous zooming television pick-up lens and control method thereof
CN105116526B (en) * 2015-09-21 2017-08-25 福建福光股份有限公司 High zoom ratio continuous vari-focus telephotography camera lens and its control method
CN106483644A (en) * 2016-12-16 2017-03-08 福建福光股份有限公司 38 times of super large zoom ratio Size Zoom TV camera lens
CN110119023A (en) * 2019-06-16 2019-08-13 福建福光股份有限公司 6000000 high-resolution zoom camera lenses

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Patentee before: Fujian Forecam Optics Co., Ltd.

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