CN103336354B - Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens - Google Patents

Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens Download PDF

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Publication number
CN103336354B
CN103336354B CN201310276652.3A CN201310276652A CN103336354B CN 103336354 B CN103336354 B CN 103336354B CN 201310276652 A CN201310276652 A CN 201310276652A CN 103336354 B CN103336354 B CN 103336354B
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lens
group
zoom
ring
crescent moon
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CN103336354A (en
Inventor
林春生
林国宝
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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Abstract

The invention relates to a miniaturized, strong light power, high multiple-proportion, hand-operated and three-variable pick-up lens. A front fixing set A with positive focal power, a zoom set B with negative focal power, a compensation set C with negative focal power, an iris component D, and a rear fixing set E with positive focal power are all arranged in the optical structure of the pick-up lens from left to right in the ray incidence direction, wherein a double convex A-1 and a first cement set are sequentially arranged on the front fixing set A, a negative crescent lens B-1 and a second cement set are sequentially arranged on the zoom set B, a third cement set is arranged on the compensation set C, a double convex E-1 and a double convex E-2 are arranged at the front part of the rear fixing set E, a fourth cement set and a positive crescent lens E-5 are sequentially arranged in the middle part of the rear fixing set E, and a negative crescent lens E-6 and a double convex E-7 are arranged at the rear end of the rear fixing set E. The lens has hand-operated continuous varifocal, hand-operated focusing, hand-operated dimming functions and the like, not only can be used in a favorable weather environment, but also still has high resolving function and the like under dim light environment.

Description

Miniaturization, high light power, the large manual three variable pick-up lenss of multiple proportions
Technical field
The present invention relates to a kind of optical pick-up apparatus of video technique, particularly a kind of miniaturization, high light power, the large manual three variable pick-up lenss of multiple proportions.
Background technology
At present, the pick-up lens being applicable to routine monitoring requires that range of observation is large, observation time is long, volume is little, quality is light, sharpness is high, and the panorama can making the little multiplying power of large regions to target is observed, and can do again the amplification observation of the large multiplying power in zonule.The optical texture form of traditional mechanical compensation formula zoom lens by first fixing group, zoom group, compensating group and rear fixing group of four constituent elements form, but ubiquity that overall volume is comparatively large, photokinesis monitoring range is narrow, in shortcomings such as low light environment hypograph are of poor quality.Existing zoom lens is limited to overall dimensions, simultaneously in order to reach higher picture quality, thus reduces the relative aperture of camera lens, causes the light signal entering pick-up lens to reduce, limits observing capacity.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, namely the technical problem to be solved in the present invention is to provide a kind of miniaturization, high light power, the large manual three variable pick-up lenss of multiple proportions.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of miniaturization, high light power, the manual three variable pick-up lenss of large multiple proportions, in the optical texture of described pick-up lens along light from left to right incident direction be respectively equipped with focal power be positive before fixing group A, focal power is negative zoom group B, focal power is negative compensating group C, iris assembly D and focal power are rear fixing group of positive E, the first gummed group that before described, fixing group A is provided with biconvex lens A-1 successively and is touched 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 negative crescent moon lens B-1 successively and is touched by biconcave lens B-2 and biconvex lens B-3, described compensating group C is provided with the 3rd gummed group of being touched by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixing group of 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 positive crescent moon lens E-5 of being touched 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 before described between fixing group A and zoom group B is 1.45 ~ 24.7mm, airspace between described zoom group B and compensating group C is 56.0 ~ 1.3mm, and the airspace between described compensating group C and rear fixing group of E is 1.8mm.
In further technical scheme, the biconvex lens A-1 before described in fixing 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, airspace between biconvex lens E-1 in described rear fixing group of E and biconvex lens E-2 is 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described 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 present invention has following beneficial effect: the present invention use mechanical compensation method and steepest zoom cam curve designing technique to devise a kind of relative aperture reaches 1: 1.9, the miniaturization of wide-angle side field angle 33.2 °, telescope end field angle 1.7 °, 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 provides 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 zoom distance, manual focusing, hand-operating light.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the structural drawing of optical system.
Fig. 2 is the outside drawing of pick-up lens.
Fig. 3 is the structural drawing of pick-up lens.
Fig. 4 is the cut-open view of A-A in Fig. 3.
In figure: fixing group clamp ring before 1-, fixation kit before 2-, 3-zoom assembly, 4-cam cover, 5-cam cover locking nail, 6-zoom guide pin, 7-focusing ring, 8-focusing shelves nail, 9-body tube, 10-cam, 11-guide rod, 12-compensation assembly, 13-compensates guide pin, 14-zoom dials nail, 15-zoom regulating ring, 16-zoom regulating ring back-up ring, 17-zoom regulating ring back-up ring locking nail, 18-diaphragm component is followed closely surely, 19-diaphragm dials nail, 20-first diaphragm seat, 21-aperture setting ring, 22-diaphragm rotating ring, 23-diaphragm seat connects nail, 24-diaphragm component, 25-second diaphragm seat, after 26-, group connects nail, assembly after 27-, the dynamic nail of 28-diaphragm component, fixing group before A-, A-1-biconvex lens, A-2-bears 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-compensating group, C-1-biconcave lens, the positive crescent moon lens of C-2-, D-iris assembly, group is fixed, E-1-biconvex lens, E-2-biconvex lens after E-, 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, the manual three variable pick-up lenss of large multiple proportions, in the optical texture of described pick-up lens along light from left to right incident direction be respectively equipped with focal power be positive before fixing group A, focal power is negative zoom group B, focal power is negative compensating group C, iris assembly D and focal power are rear fixing group of positive E, the first gummed group that before described, fixing group A is provided with biconvex lens A-1 successively and is touched 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 negative crescent moon lens B-1 successively and is touched by biconcave lens B-2 and biconvex lens B-3, described compensating group C is provided with the 3rd gummed group of being touched by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixing group of 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 positive crescent moon lens E-5 of being touched 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 before described between fixing group A and zoom group B is 1.45 ~ 24.7mm, and the airspace between described zoom group B and compensating group C is 56.0 ~ 1.3mm, and the airspace between described compensating group C and rear fixing group of E is 1.8mm; Biconvex lens A-1 before described in fixing 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, airspace between biconvex lens E-1 in described rear fixing group of E and biconvex lens E-2 is 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described 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 reaches 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) spectral line is suitable for: 400 ~ 700 nm; (6) optics overall length: be less than 178mm;
As shown in Figure 2, the physical dimension φ × L of this pick-up lens is 68.5mm × 170mm, and its front end handwheel is focusing handwheel, pivot head handwheel, front fixing group of pick-up lens can be made to move, thus the object distance of pick-up lens is changed from 3m ~ infinite distance; Handwheel in the middle of rotating, the zoom of this pick-up lens, compensating group press the curvilinear motion of steepest zoom cam, thus make focal length generation Rapid Variable Design; Rotating rear end handwheel can make aperture be that 1.9 scopes change from contract fully to F number.
As shown in Figure 3, the focus adjusting mechanism of this pick-up lens comprises focusing ring 7, the front fixation kit 2 being positioned at focusing ring 7 and the body tube 9 be positioned on rear side of front fixation kit 2, described front fixation kit 2 and focusing ring 7 are by thread connection and lock to make together with front fixation kit 2 connects firmly with focusing ring 7 by front fixing group of clamp ring 1, described focusing ring 7 and body tube 9 are connected by bull pitch thread and carry out when assembling grinding make its threading action smooth and easy and do not have vibration on axle, described body tube 9 offers guide groove, described focusing ring 7 is fixed with and matches to guide its relative body tube 9 focusing shelves for the helical movement to follow closely 8 with guide groove, make focusing ring 7 can only do relative motion with body tube 9 on axle within the specific limits.During use: left rotation and right rotation focusing ring 7, front fixation kit 2 can be made to seesaw with body tube 9 within the specific limits, thus realize the object 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, the forward and reverse rotary motion steady and smooth of zoom regulating ring 15 is made by regulating zoom regulating ring back-up ring 16, without clamping stagnation, described zoom assembly 3 and compensation assembly 12 to be installed on two guide rods 11 and to be slidably matched, described two guide rods 11 are fixed on body tube 9 respectively symmetrically by cam cover 4, described body tube 9 is milled with 160 ° of zoom regulating tanks, in described zoom regulating tank, zoom is installed and dials nail 14, one end screw thread that described zoom dials nail 14 is fixed on cam 10, the other end is stuck in dialling of zoom regulating ring 15 and follows closely in groove, described cam 10 external diameter and body tube 9 grind joins merga pass cam cover 4 and is fixed in body tube 9, described cam 10 is milled with zoom curved groove and compensated curve groove by the requirement of the optical zoom equation of motion, described zoom assembly 3 is fixed with the zoom guide pin 6 matched with zoom curved groove, described compensation assembly 12 is fixed with the compensation guide pin 13 matched with compensated curve groove.When manual left rotation and right rotation zoom regulating ring 15 (rotating range is within the scope of 160 ° of zoom regulating tanks of body tube 9), zoom regulating ring 15 dials nail 14 by zoom makes cam 10 make left-right rotation, and cam 10 drives zoom assembly 3, compensation assembly 12 to move 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; 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 the rotary motion of cam 10; Realize zoom assembly 3 by left rotation and right rotation zoom regulating ring 15 like this, compensation assembly 12 does tandem motion by the zoom equation of motion, thus 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 also connects to make diaphragm rotating ring 22 smooth rotation with the second diaphragm seat 25 and diaphragm seat connection nail 23, 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 to make its smooth rotation, without clamping stagnation vibration phenomenon, described first diaphragm seat 20 is milled with 86 ° and dials nail groove, in described group of nail groove, diaphragm is installed and dials nail 19, one end screw thread that described diaphragm dials nail 19 is fixed on diaphragm rotating ring 22, the other end is stuck in dialling of aperture setting ring 21 and follows closely in draw-in groove, overlapped and the one end of the diaphragm sheet of described diaphragm component 24 by diaphragm component surely follow closely 18 be installed on the first diaphragm seat 20 determine in nail, 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 nail groove of the first diaphragm seat 20, and drive diaphragm rotating ring 22 to make left-right rotation, diaphragm rotating ring 22 left rotation and right rotation drives diaphragm component to move nail 28 and moves in the straight trough of diaphragm rotating ring 22, and rotates with diaphragm rotating ring 22; Diaphragm component 24 is so just driven surely to follow closely 18 for doing circular motion in the center of circle with diaphragm component, 12 diaphragm components 24 follow closely 18 for doing circular motion in the center of circle with respective diaphragm component simultaneously surely, then produce the open and close movement that diaphragm component 24 take optical axis as the center of circle, thus control the size of aperture.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (4)

1. a miniaturization, high light power, the manual three variable pick-up lenss of large multiple proportions, it is characterized in that: in the optical texture of described pick-up lens along light from left to right incident direction be respectively equipped with focal power be positive before fixing group A, focal power is negative zoom group B, focal power is negative compensating group C, iris assembly D and focal power are rear fixing group of positive E, the first gummed group that before described, fixing group A is provided with biconvex lens A-1 successively and is touched 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 negative crescent moon lens B-1 successively and is touched by biconcave lens B-2 and biconvex lens B-3, described compensating group C is provided with the 3rd gummed group of being touched by biconcave lens C-1 and positive crescent moon lens C-2, described rear fixing group of 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 positive crescent moon lens E-5 of being touched 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, wherein, described negative crescent moon lens A-2, positive crescent moon lens A-3, negative crescent moon lens B-1, positive crescent moon lens C-2, positive crescent moon lens E-5 and negative crescent moon lens E-6 all protrude to object space side, airspace before described between fixing group A and zoom group B is 1.45 ~ 24.7mm, and the airspace between described zoom group B and compensating group C is 56.0 ~ 1.3mm, and the airspace between described compensating group C and rear fixing group of E is 1.8mm, biconvex lens A-1 before described in fixing 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, airspace between biconvex lens E-1 in described rear fixing group of E and biconvex lens E-2 is 0.2mm, airspace between described biconvex lens E-2 and the 3rd gummed group is 2.5mm, airspace between described 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.
2. miniaturization according to claim 1, high light power, the manual three variable pick-up lenss of large multiple proportions, it is characterized in that: the focus adjusting mechanism of described pick-up lens comprises focusing ring, the front fixation kit being positioned at focusing ring and the body tube be positioned on rear side of front fixation kit, described front fixation kit and focusing ring are by thread connection and lock to make together with front fixation kit connects firmly with focusing ring by front fixing group of clamp ring, described focusing ring is connected by bull pitch thread with body tube, described body tube offers guide groove, described focusing ring is fixed with the focusing shelves matching to guide its relative body tube for the helical movement with guide groove to follow closely.
3. miniaturization according to claim 1, high light power, the manual three variable pick-up lenss of large multiple proportions, it is characterized in that: the zoom mechanism of described pick-up lens comprises 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 to be installed on two guide rods and to be slidably matched, described two guide rods are fixed on body tube respectively symmetrically by cam cover, described body tube offers zoom regulating tank, in described zoom regulating tank, zoom is installed and dials nail, one end that described zoom dials nail is fixed on cam, the other end is stuck in dialling of zoom regulating ring and follows closely in groove, described cam is fixed in body tube by cam cover, described cam offers zoom curved groove and compensated curve groove, described zoom assembly is fixed with the zoom guide pin matched with zoom curved groove, described compensation assembly is fixed with the compensation guide pin matched with compensated curve groove.
4. miniaturization according to claim 1, high light power, the manual three variable pick-up lenss of large multiple proportions, 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 to be arranged on the first diaphragm seat and to connect 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, described first diaphragm seat offers and dials nail groove, in described group of nail groove, diaphragm is installed and dials nail, one end that described diaphragm dials nail is fixed on diaphragm rotating ring, the other end is stuck in dialling of aperture setting ring and follows closely in draw-in groove, overlapped and the one end of the diaphragm sheet of described diaphragm component by diaphragm component surely follow closely be installed on the first diaphragm seat determine in nail, the other end moves nail by diaphragm component and is installed in the straight trough of diaphragm rotating ring.
CN201310276652.3A 2013-07-03 2013-07-03 Miniaturized, strong light power, high multiple proportion, hand-operated and three-variable pick-up lens Active CN103336354B (en)

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CN104777599B (en) * 2015-03-26 2017-07-14 中国科学院长春光学精密机械与物理研究所 The big zoom ratio zoom lens of the constituent element of portable extension type type three
JP6541470B2 (en) * 2015-06-30 2019-07-10 キヤノン株式会社 Zoom lens and imaging device having the same
CN108873277B (en) * 2018-08-17 2021-06-01 福建福光股份有限公司 Compact wide-angle high-zoom-ratio high-definition zoom lens

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CN102809805A (en) * 2012-08-30 2012-12-05 福建福光数码科技有限公司 Miniaturized airborne zoom lens with large zooming ratio
CN203337910U (en) * 2013-07-03 2013-12-11 福建福光数码科技有限公司 Small-size camera lens having high light gathering power and large zoom ratio and with manually changeable focal length, focus and iris

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