CN202904107U - High-resolution image pick-up lens for full-group mobile industry - Google Patents
High-resolution image pick-up lens for full-group mobile industry Download PDFInfo
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- CN202904107U CN202904107U CN201220561702.3U CN201220561702U CN202904107U CN 202904107 U CN202904107 U CN 202904107U CN 201220561702 U CN201220561702 U CN 201220561702U CN 202904107 U CN202904107 U CN 202904107U
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Abstract
The utility model relates to a high-resolution image pick-up lens for the full-group mobile industry. A front group A, an iris C and a rear group B are sequentially arranged along an incident direction of light rays from left to right in an optical system of the lens; the front group A is sequentially provided with a negative meniscus lens A-1, a biconvex lens A-2, and a first gluing group formed by tightly connecting a biconvex lens A-3 and a biconcave lens A-4; and the rear group B is sequentially provided with a second gluing group formed by tightly connecting a positive meniscus lens B-1 and a negative meniscus lens B-2, a negative meniscus lens B-3, and a third gluing group formed by tightly connecting a biconvex lens B-4 and a plano-concave lens B-5. The high-resolution image pick-up lens has the characteristics of high resolution, large target surface, low distortion, small close-up distance and the like and can be matched with a high-definition CCD or CMOS camera, high-definition video shooting can be realized, clear imaging with a 0.3m close-up distance can be realized, and the distortion rate is less than 1 percent.
Description
Technical field
The utility model relates to a kind of high resolving power and entirely organizes the mobile industrial pick-up lens.
Background technology
Improving constantly of constantly perfect, various circles of society's awareness of safety of science and technology promoting the fast development in security protection market.Along with advanced person's technology of video compressing encoding is constantly ripe, the develop rapidly of IP-based Internet Transmission has released a series of 3,000,000,5,000,000 even the high-definition camera of higher pixel on the market.Constantly perfect along with 1,000,000 grades of pixel high-resolution CCD, cmos image sensor, the photo electric video frequency monitoring networking is also more and more general, the performance of video camera system by in the past to external world pure " the watching " of scenery to now " identification and cognitive ", again because the shortcoming that exists the sharpness (being resolution) of video to descend in the process of Internet Transmission and Digital Zoom, and people are more and more higher to the requirement of image analytic degree, require to have more high-resolution camera lens.Pick-up lens such as Fig. 1 structural shape was used more than 10 year in the video camera field, its performance index are low, especially it can only be adaptive with SD CCD or the cmos camera of 20 ~ 300,000 pixels aspect image definition, can only adapt to the needs that the monitoring field " is seen ", such resolution has not satisfied the requirement of present high-definition camera far away.
The utility model content
The utility model makes improvements for the problem that above-mentioned prior art exists, be that the technical problems to be solved in the utility model provides the higher high resolving power of a kind of resolution and entirely organizes the mobile industrial pick-up lens, for video camera system provides the high definition camera lens that a kind of optical index is high, the optics target surface is large, resolution is higher than five mega pixels, can " video camera of high definition supports the use; video camera system can be realized the requirement of scenery at the high definition pick-up of high photokinesis variation range environment, and almost not distortion with 16:9 standard 2/3.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of high resolving power is organized the mobile industrial pick-up lens entirely, in the optical system of described camera lens along light from left to right incident direction be disposed with front group of A, iris C and after organize B, described front group of A is disposed with negative crescent moon lens A-1, biconvex lens A-2 and the first gummed group of being connected airtight by biconvex lens A-3 and biconcave lens A-4, described rear group of B is disposed with the second gummed group of being connected airtight by positive crescent moon lens B-1 and negative crescent moon lens B-2, negative crescent moon lens B-3 and the 3rd gummed group of being connected airtight by biconvex lens B-4 and plano-concave lens B-5.
In technique scheme, described rear group of B changes first and the 3rd eyeglass into the cemented doublet group on the prototype of traditional three-chip type structure, to share the focal power of rear group of B, improved the relative aperture of camera lens; Utilize gummed to organize the refractive index of positive and negative eyeglass and the difference of dispersion, the aberration of corrective lens, make resolution of lens up to 5,000,000, distortion is less than 1%.
Compared with prior art, the utlity model has following advantage.
(1) by area of computer aided optical design and optimization, the various aberrations of optical lens have been proofreaied and correct perfectly, and the optical glass material of forward and backward two groups of nine eyeglasses of reasonable selection, select the optical glass material (such as the H-FK61 optical material) of high index of refraction, low dispersion, make the mtf value of camera lens at 150lp/mm, make the resolution of camera lens up to 5,000,000 pixels, can adapt to the requirement of existing industrial high definition video shooting.
(2) in the optical texture of this retrofocus type reasonable distribution the focal power of front group and rear group, in rear group, the first of three-chip type structure and the 3rd eyeglass are changed into the cemented doublet group, make camera lens reach the performance index that relative aperture is large, structure length is short.
(3) this optical system is passed through design optimization, close-shot can realize blur-free imaging apart from reaching 0.3m in nearer object distance with respect to common telephoto lens, and this also is a large advantage of industrial lens, and distortion is satisfied the little requirement of industrial lens distortion below 1%.
(4) structural design guaranteed precision, the concentricity of camera lens and move axially the position accurately, make again the compact conformation, attractive in appearance of camera lens as far as possible; Consider simultaneously the intuitive of lens parameters, can do clear and definite sign to relative aperture and focusing position.Design different spacer rings and trim ring and guaranteed airspace and fixing len between eyeglass, thus the perfect various aspects of performance such as camera lens picture element, distortion that realize; Consider simultaneously the practicality of camera lens, adopted front end little " focusing " structure, avoided the limit of camera lens to use.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the index path of existing common lens.
Fig. 2 is the index path of the utility model embodiment.
Fig. 3 is the structural drawing of the utility model embodiment.
Among the figure: group before the A-, organize the C-iris behind the B-, A-1, B-2, B-3-bears crescent moon lens, A-2, A-3, the B-4-biconvex lens, the A-4-biconcave lens, the positive crescent moon lens of B-1-, arrangement of mirrors cylinder before the B-5-plano-concave lens, 1-, trim ring before the 2-, 3-the first spacer ring, 4-focusing ring, 5-cone end jackscrew, 6-the second spacer ring, 7-roll adjustment seat, the 8-transition piece, 9-light hurdle snap ring, 10-light hurdle regulating ring, nail is dialled on 11-light hurdle, 12-Connection Block jackscrew, 13-Connection Block, 14-limiting steering sheet, 15-countersunk head nail, 16-the 4th spacer ring, trim ring behind the 17-, 18-plano-concave lens B-5,19-biconvex lens B-4,20-bears crescent moon lens B-3, and 21-bears crescent moon lens B-2, the positive crescent moon lens of 22-B-1,23-the 3rd spacer ring, arrangement of mirrors cylinder behind the 24-, 25-light hurdle rivet, 26-biconcave lens A-4,27-light hurdle rotating ring, 28-light hurdle locking nail, 29-biconvex lens A-3,30-transition piece locking nail, 31-biconvex lens A-2,32-bears crescent moon lens A-1.
Embodiment
As shown in Figure 2, light path design of the present utility model is as follows: a kind of high resolving power is organized the mobile industrial pick-up lens entirely, in the optical system of described camera lens along light from left to right incident direction be disposed with front group of A, iris C and after organize B, described front group of A is disposed with negative crescent moon lens A-1, biconvex lens A-2 and the first gummed group of being connected airtight by biconvex lens A-3 and biconcave lens A-4, described rear group of B is disposed with the second gummed group of being connected airtight by positive crescent moon lens B-1 and negative crescent moon lens B-2, negative crescent moon lens B-3 and the 3rd gummed group of being connected airtight by biconvex lens B-4 and plano-concave lens B-5.
In the present embodiment, the airspace between described front group of A and the rear group of B is 8.231mm, and the airspace between described front group of A and the iris C is 1.308mm, and the airspace between described iris C and the rear group of B is 6.923mm; Negative crescent moon lens A-1 among the described front group of A and the airspace between the biconvex lens A-2 are 9.148mm, and the airspace between described biconvex lens A-2 and the first gummed group is 3.130mm; The second gummed group among the described rear group of B and the airspace of bearing between the crescent moon lens B-3 are 0.100mm, and the airspace between described negative selenodont lens B-3 and the 3rd gummed group is 0.100mm.
In the present embodiment, this high resolving power is entirely organized mobile industrial and has been realized following technical indicator with pick-up lens: (1) focal length: f '=25mm; (2) relative aperture: D/f '=1/1.8; (3) field angle: 2 ω=27.88 °; (4) resolution: be better than 5,000,000 pixels; (5) light path overall length ∑≤56.5mm; (6) applicable spectral line scope: 400nm ~ 700nm.
Because 5,000,000 pixel high-resolution camera lenses are highstrung to airspace and respective outer side edges each side, so its Design of Mechanical Structure to product also has quite high requirement.Design of Mechanical Structure of the present utility model respectively cooperates the right alignment of parts and the size of self parts except guaranteeing definitely, also the tolerance on fit between each matable assembly has also been done strict control.
As shown in Figure 3, Design of Mechanical Structure of the present utility model is as follows: described front group of A is installed in the front arrangement of mirrors cylinder 1, can effectively guarantee concentricity by the front arrangement of mirrors cylinder 11 of same machine tooling, thus cooperate with the eyeglass of front group of A guarantee before the right alignment of group light path; The front trim ring 2 of pushing down negative crescent moon lens A-1 is installed in described front arrangement of mirrors cylinder 1 front end, and the Assembly stability of arrangement of mirrors sheet before guaranteeing, and interception parasitic light are eliminated it to the impact of lens imaging quality; Be provided with the first spacer ring 3 between described negative crescent moon lens A-1 and the biconvex lens A-2, be provided with the second spacer ring 6 between described biconvex lens A-2 and the biconvex lens A-3, guarantee logical light and air distance between each eyeglass.Described rear group of B is installed in the rear arrangement of mirrors cylinder 24, and described rear arrangement of mirrors cylinder is equipped with the rear trim ring 17 of pushing down plano-concave lens B-5 in 24 rear ends, and the Assembly stability of arrangement of mirrors sheet after guaranteeing prevents that eyeglass is loosening or drops out; Be provided with the 3rd spacer ring 23 between described negative crescent moon lens B-2 and the negative crescent moon lens B-3, be provided with the 4th spacer ring 16 between described negative crescent moon lens B-3 and the biconvex lens B-4, guarantee the airspace between each eyeglass.Described front arrangement of mirrors cylinder 1 is threaded connection into the structure that links with rear arrangement of mirrors cylinder 24.
Be the function that realizes that aperture is regulated, described rear arrangement of mirrors cylinder 24 is provided with the adjusting aperture governor motion for iris C, described iris C is the middle light hurdle rotating ring 27 that is fixed with 6 light hurdle sheets, described smooth hurdle sheet is after light hurdle rivet 25 is connected on the arrangement of mirrors cylinder 24, described aperture governor motion comprises light hurdle rotating ring 27 is fixed on light hurdle snap ring 9 on the rear arrangement of mirrors cylinder 24, nail 11 is dialled on the light hurdle of light hurdle regulating ring 10 and connection light hurdle rotating ring 27 and light hurdle regulating ring 10, offer the groove of certain angle in the described rear arrangement of mirrors cylinder 24 with the size of control light hurdle opening, to satisfy the environment for use under the different illumination conditions.
Adjustable in order to realize that camera lens closely arrives ∞, described rear arrangement of mirrors cylinder 24 is provided with the fine setting focusing mechanism, it adopts the transmission that cooperatively interacts of bull pitch thread and left-handed fine thread, has focusing fast, flexibly, the advantage that backlash is little, concrete structure is as follows: described fine setting focusing mechanism comprises roll adjustment seat 7 and focusing ring 4, described focusing ring 4 is connected with roll adjustment seat 7 through 3 cone end jackscrews 5, described roll adjustment seat 7 outsides are connected with transition piece 8, described roll adjustment seat 7 respectively through positive and negative pitch thread with after arrangement of mirrors cylinder 24 be connected with transition piece 8, described transition piece 8 is fixed on the roll adjustment seat 7 through transition piece locking nail 30, and described smooth hurdle regulating ring 10 is fixed on the transition piece 8 through light hurdle locking nail 28.When external force is rotated focusing ring 4, drive roll adjustment seat 7 and rotate towards a direction, the respectively in the opposite direction motion of the transition piece 8 that be connected with its positive and negative tooth this moment and rear arrangement of mirrors cylinder 24.
In order to prevent that whole light path from occuring along the rotatablely moving of optical axis, be provided with limiting steering sheet 14 between described transition piece 8 and the rear arrangement of mirrors cylinder 24 changing the direction of rear arrangement of mirrors cylinder 24 motions, described limiting steering sheet 14 is after countersunk head nail 15 is fixed on the arrangement of mirrors cylinder 24.Again because rear arrangement of mirrors cylinder 24 is threaded connection into the structure of interlock with front arrangement of mirrors cylinder 1, thus when regulating focusing ring 4, driven whole group of structure do away from or near the motion of focal plane, thereby realized the function of focusing.Focusing range mainly is that the latch and the slot that rely between focusing ring 4 and the transition piece 8 limit to guarantee focusing range.In the fine setting focusing mechanism, for precision and the concentricity of camera lens in the focusing process that guarantees to focus, require the threaded engagement between roll adjustment seat 7 and transition piece 8 and the rear arrangement of mirrors cylinder 24 will pass through grinding operation during design.
Consider the practicality of industrial lens, in order to indicate more intuitively close-shot apart from the change procedure to the infinite distance, on transition piece 8, indicated the corresponding focal length of diverse location by accurate technology, also mark simultaneously out relative aperture value corresponding to different aperture position, all done corresponding anchor point at focusing ring 4 with above the light hurdle regulating ring 10, so that check.
Dock with video camera for the ease of camera lens, described transition piece 8 is connected with Connection Block 13, described Connection Block 13 is fixed on the transition piece 8 through 3 Connection Block jackscrews 12, thereby also define the motion of transition piece 8, in the focusing process, realized like this only having whole group of light path to reach the clear of picture element in variation.
The above only is preferred embodiment of the present utility model, and 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 high resolving power is organized the mobile industrial pick-up lens entirely, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction be disposed with front group of A, iris C and after organize B, the first gummed group that described front group of A is disposed with negative crescent moon lens A-1, biconvex lens A-2 and connected airtight by biconvex lens A-3 and biconcave lens A-4, the 3rd gummed group that described rear group of B is disposed with the second gummed group of being connected airtight by positive crescent moon lens B-1 and negative crescent moon lens B-2, negative crescent moon lens B-3 and connected airtight by biconvex lens B-4 and plano-concave lens B-5.
2. high resolving power according to claim 1 is organized the mobile industrial pick-up lens entirely, it is characterized in that: the airspace between described front group of A and the rear group of B is 8.231mm, airspace between described front group of A and the iris C is 1.308mm, and the airspace between described iris C and the rear group of B is 6.923mm.
3. high resolving power according to claim 1 and 2 is organized the mobile industrial pick-up lens entirely, it is characterized in that: the negative crescent moon lens A-1 among the described front group of A and the airspace between the biconvex lens A-2 are 9.148mm, and the airspace between described biconvex lens A-2 and the first gummed group is 3.130mm; The second gummed group among the described rear group of B and the airspace of bearing between the crescent moon lens B-3 are 0.100mm, and the airspace between described negative selenodont lens B-3 and the 3rd gummed group is 0.100mm.
4. high resolving power according to claim 1 is organized the mobile industrial pick-up lens entirely, it is characterized in that: described front group of A is installed in the front arrangement of mirrors cylinder, the front trim ring of pushing down negative crescent moon lens A-1 is installed in the described front arrangement of mirrors cylinder front end, be provided with the first spacer ring between described negative crescent moon lens A-1 and the biconvex lens A-2, be provided with the second spacer ring between described biconvex lens A-2 and the biconvex lens A-3; Described rear group of B is installed in the rear arrangement of mirrors cylinder, in the described rear arrangement of mirrors tube rear end the rear trim ring of pushing down plano-concave lens B-5 is installed, be provided with the 3rd spacer ring between described negative crescent moon lens B-2 and the negative crescent moon lens B-3, be provided with the 4th spacer ring between described negative crescent moon lens B-3 and the biconvex lens B-4; Described front arrangement of mirrors cylinder and rear arrangement of mirrors cylinder bolt.
5. high resolving power according to claim 4 is organized the mobile industrial pick-up lens entirely, it is characterized in that: described rear arrangement of mirrors cylinder is provided with the adjusting aperture governor motion for iris C, described iris C is the middle light hurdle rotating ring that is fixed with some light hurdle sheets, described smooth hurdle sheet is after light hurdle rivet is connected on the arrangement of mirrors cylinder, described aperture governor motion comprises light hurdle rotating ring is fixed on light hurdle snap ring on the rear arrangement of mirrors cylinder, nail is dialled on the light hurdle of light hurdle regulating ring and connection light hurdle rotating ring and light hurdle regulating ring, offers the groove of control light hurdle openings of sizes in the described rear arrangement of mirrors cylinder.
6. high resolving power according to claim 5 is organized the mobile industrial pick-up lens entirely, it is characterized in that: described rear arrangement of mirrors cylinder is provided with the fine setting focusing mechanism, described fine setting focusing mechanism comprises roll adjustment seat and focusing ring, described focusing ring is connected through several cone end jackscrews and roll adjustment seat, the described roll adjustment seat outside is connected with transition piece, described roll adjustment seat respectively through positive and negative pitch thread with after the arrangement of mirrors cylinder be connected with transition piece, described transition piece is fixed on the roll adjustment seat through the transition piece locking nail, and described smooth hurdle regulating ring is fixed on the transition piece through light hurdle locking nail.
7. high resolving power according to claim 6 is organized the mobile industrial pick-up lens entirely, it is characterized in that: be provided with the limiting steering sheet between described transition piece and the rear arrangement of mirrors cylinder, described limiting steering sheet is after countersunk head nail is fixed on the arrangement of mirrors cylinder.
8. high resolving power according to claim 6 is organized the mobile industrial pick-up lens entirely, it is characterized in that: described transition piece is connected with Connection Block, and described Connection Block is fixed on the transition piece through several Connection Block jackscrews.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561702.3U CN202904107U (en) | 2012-10-30 | 2012-10-30 | High-resolution image pick-up lens for full-group mobile industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561702.3U CN202904107U (en) | 2012-10-30 | 2012-10-30 | High-resolution image pick-up lens for full-group mobile industry |
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| CN202904107U true CN202904107U (en) | 2013-04-24 |
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| CN201220561702.3U Withdrawn - After Issue CN202904107U (en) | 2012-10-30 | 2012-10-30 | High-resolution image pick-up lens for full-group mobile industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890333A (en) * | 2012-10-30 | 2013-01-23 | 福建福光数码科技有限公司 | High-resolution camera shooting lens for full-group mobile industry |
-
2012
- 2012-10-30 CN CN201220561702.3U patent/CN202904107U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890333A (en) * | 2012-10-30 | 2013-01-23 | 福建福光数码科技有限公司 | High-resolution camera shooting lens for full-group mobile industry |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20141008 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20141008 |
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| RGAV | Abandon patent right to avoid regrant |