CN204807793U - Optics tight shot - Google Patents
Optics tight shot Download PDFInfo
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- CN204807793U CN204807793U CN201520420575.9U CN201520420575U CN204807793U CN 204807793 U CN204807793 U CN 204807793U CN 201520420575 U CN201520420575 U CN 201520420575U CN 204807793 U CN204807793 U CN 204807793U
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- lens
- focal power
- lens combination
- tight shot
- optics tight
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Abstract
The utility model relates to a lens show technical field, especially relate to an optics tight shot for realize optics tight shot's the big light ring of big image planes, this optics tight shot accessory things inclines, and the range includes for instance incline in proper order: first battery of lens, second battery of lens, diaphragm and third battery of lens, wherein, the focal power of first battery of lens is the burden, and the focal power of second battery of lens is being for just, and the focal power of third battery of lens is for just, and the diaphragm is located between second battery of lens and the third battery of lens, and wherein, first battery of lens includes: the focal power is positive first lens of biconvex type, the focal power be positive biconvex type fourth lens for biconcave type second lens, the focal power of burden for biconcave type third lens, the focal power of burden, consequently, can realize the demand that the high definition formed images, has enlarged optics tight shot's image planes and visual field and has improved optics tight shot's resolution ratio.
Description
Technical field
The utility model relates to lens display technique field, particularly relates to a kind of optics tight shot.
Background technology
The development trend of intelligent transportation optical lens is high definition, large image planes, low cost, Large visual angle, the large depth of field.Along with the development such as safe city, road monitoring, intelligent transportation field such as electricity police, knotmeter etc. favors 1/1 more ", 4/3 " optical lens of the large scale CCD/CMOS such as inch, monitor to realize the stop high-resolution of the field range such as car plate and traffic lights of more than 3 tracks.On current intelligent transportation safety monitoring optical lens market, 4/3 can be met simultaneously " inch imaging, field angle about 60 ° product quite rare, and price is also relatively expensive.
In addition, the imaging pixel quality of intelligent transportation electronic police, knotmeter improves gradually, be better than 5,000,000, even up to more than 8,000,000, being the inevitable requirement in market, and 8,000,000 pixels can being reached and image planes meet 4/3 simultaneously " inch, the camera lens of field angle more than 60 ° rarely having sale on the market.
Utility model content
The utility model embodiment provides a kind of optics tight shot, in order to solve optics tight shot of the prior art cannot meet large image planes large aperture problem.
The concrete technical scheme that the utility model embodiment provides is as follows:
A kind of optics tight shot, is arranged in order from the object side to image side and comprises: the first lens combination, the second lens combination, diaphragm and the 3rd lens combination;
Wherein, the focal power of described first lens combination is negative, the focal power of described second lens combination is just, the focal power of described 3rd lens combination is just, described diaphragm is between described second lens combination and described 3rd lens combination, wherein, described first lens combination comprises: focal power is positive biconvex first lens, focal power is negative double concave type second lens, focal power is negative double concave type the 3rd lens, focal power is positive biconvex the 4th lens.
Therefore, it is possible to realize the demand of high definition imaging, and expand the image planes of optics tight shot and visual field and improve the resolution of optics tight shot.
Optionally, described second lens combination comprises: focal power is positive biconvex the 5th lens, focal power is negative double concave type the 6th lens, and focal power is positive biconvex the 7th lens.
Optionally, described 3rd lens combination comprises: focal power is for just, and concave-convex type the 8th lens of concave surface facing thing side, focal power are negative double concave type the 9th lens, focal power is positive biconvex the tenth lens, focal power is positive biconvex the 11 lens, focal power is negative double concave type the 12 lens, focal power is positive biconvex the 13 lens.
Optionally, described first lens combination, described second lens combination, described diaphragm and described 3rd lens combination form anti-long distance structure.
Optionally,
In described first lens combination, described first lens and described second lens glue together and form first group of cemented doublet, and described 3rd lens and described 4th lens glue together and form second group of cemented doublet.
Optionally,
In described second lens combination, described 6th lens and described 7th lens glue together and form the 3rd group of cemented doublet.
Optionally,
In described 3rd lens combination, described 8th lens, described 9th lens and described tenth lens glue together and form three balsaming lenss, and described 12 lens and described 13 lens glue together and form the 4th group of cemented doublet.
Optionally, each lens in described first lens combination, described second lens combination, described 3rd lens combination are spherical lens.
Optionally, the effective focal length of described first lens combination and the effective focal length of described optics tight shot meet first and set relation, and the effective focal length of described second lens combination and the effective focal length of described optics tight shot meet second and set relation;
Wherein, described first setting pass is: 0.8<|F
1/ F
eff| <2.2, described second setting pass is: 0.8<F
2/ F
eff<1.9, wherein F
efffor the effective focal length of described optics tight shot, F
1for the effective focal length of described first lens combination, F
2for the effective focal length of described second lens combination.
Optionally, described optics tight shot is image-forming objective lens, and the image planes of described optics tight shot are the one in charge coupled device ccd or CMOS semiconductor sensor CMOS.
Accompanying drawing explanation
Fig. 1 is the structural representation of optics tight shot in the utility model embodiment;
Fig. 2 is the spherical aberration diagram of optics tight shot in the utility model embodiment;
Fig. 3 is the lateral chromatic aberration figure of optics tight shot in the utility model embodiment;
Fig. 4 A is the curvature of field figure of optics tight shot in the utility model embodiment;
Fig. 4 B is the distortion figure of optics tight shot in the utility model embodiment;
Fig. 5 A-Fig. 5 E is the light sector diagram of the imaging image of optics tight shot in the utility model embodiment.
Embodiment
In order to solve optics tight shot of the prior art cannot meet large image planes large aperture problem, the utility model provides a kind of optics tight shot, and this optics tight shot is arranged in order from the object side to image side and comprises: the first lens combination, the second lens combination, diaphragm and the 3rd lens combination; Wherein, the focal power of the first lens combination is negative, the focal power of the second lens combination is just, the focal power of the 3rd lens combination is just, diaphragm is between the second lens combination and the 3rd lens combination, wherein, the first lens combination comprises: focal power is positive biconvex first lens, focal power is negative double concave type second lens, focal power is negative double concave type the 3rd lens, focal power is positive biconvex the 4th lens.
Below in conjunction with accompanying drawing, the utility model is preferred embodiment described in detail.
Consulting shown in Fig. 1, is a kind of in the utility model structural representation of optics tight shot.
The direction mentioned in following examples for, such as: upper and lower, left and right, front or rear etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate, but not is used for limiting the utility model.
A kind of optics tight shot, is arranged in order from the object side to image side and comprises: the first lens combination A, the second lens combination B, diaphragm ST and the 3rd lens combination C.
Wherein, the focal power of the first lens combination A is negative, the focal power of the second lens combination B is just, the focal power of the 3rd lens combination C is just, diaphragm ST is between the second lens combination B and the 3rd lens combination C, wherein, the first lens combination A comprises: focal power is positive biconvex first lens 1, focal power is negative double concave type second lens 2, focal power is negative double concave type the 3rd lens 3, focal power is positive biconvex the 4th lens 4.
As long as the first lens combination meets focal power is here bear and meet the demand that above-mentioned constituent relation effectively can ensure high definition imaging, and contribute to expanding the image planes of optics tight shot and the resolution of visual field and raising optics tight shot.
Optionally, the second lens combination B comprises: focal power is positive biconvex the 5th lens 5, focal power is negative double concave type the 6th lens 6, and focal power is positive biconvex the 7th lens 7.
3rd lens combination C comprises: focal power is for just, and concave-convex type the 8th lens 8 of concave surface facing thing side, focal power are negative double concave type the 9th lens 9, focal power is positive biconvex the tenth lens 10, focal power is positive biconvex the 11 lens 11, focal power is negative double concave type the 12 lens 12, focal power is positive biconvex the 13 lens 13.
Here the first lens combination A, the second lens combination B, diaphragm ST and the 3rd lens combination C form anti-long distance structure.
In fact, anti-long distance version is relatively applicable to the specification requirement for realizing large image planes and Large visual angle.And the utility model just by divide in focal power mix have employed before negative after positive anti-long distance version, and reasonably eyeglass face type and minute surface selection, while meeting specification demands, reasonable achieving controls aberration.
Each lens in first lens combination A, the second lens combination B, the 3rd lens combination C are spherical lens.Because spherical lens has lower cost, the manufacturing cost of the tight shot of the present embodiment therefore can be reduced.In addition, adopt spherical lens also can reduce the difficulty of manufacturing tolerance susceptibility and inspection material, be conducive to a large amount of production.
In the present embodiment, be reduce aberration, reduce lens surface reflection quantity, in the first lens combination A, the first lens 1 and the second lens 2 glue together and form first group of cemented doublet, and the 3rd lens 3 and the 4th lens 4 glue together and form second group of cemented doublet.
In the second lens combination B, the 6th lens 6 and the 7th lens 7 glue together and form the 3rd group of cemented doublet.
In the 3rd lens combination C, the 8th lens 8, the 9th lens 9 and the tenth lens 10 glue together and form three balsaming lenss, and the 12 lens the 12 and the 13 lens 13 glue together and form the 4th group of cemented doublet.
It may be noted that the utility model is not limited with above-mentioned gummed.Gummed scheme is herein the preferred version of proposition from the viewpoint of the raising of convenient, the transmitance of assembling etc. mainly.Usually, gummed scheme makes contiguity scheme into is also feasible.
In the present embodiment, preferably between the second lens combination B and the 3rd lens combination C, aperture diaphragm ST is configured.By configuration like this, make positive negative power before and after diaphragm ST suitably disperse symmetry, easily carry out the correction of all aberrations.If aperture diaphragm ST is configured in than the second lens combination B closer to thing side, then emergent pupil bore becomes large, and the bore of increase the 3rd lens combination C that has to, lens weight also increases, and is not therefore preferred.
In addition, in the utility model embodiment, the effective focal length of the first lens combination A and the effective focal length of optics tight shot meet first and set relation, the effective focal length of the second lens combination B and the effective focal length of optics tight shot meet second and set relation, and the first setting pass is: 0.8<|F
1/ F
eff| <2.2, the second setting pass is: 0.8<F
2/ F
eff<1.9, wherein F
efffor the effective focal length of optics tight shot, F
1be the effective focal length of the first lens combination, F
2it is the effective focal length of the second lens combination.
Concrete, for the first setting relation, when | F
1/ F
eff| exceed in limited time, negative power is excessively weak, and system length is larger.When | F
1/ F
eff| exceed in limited time lower, negative power is excessively strong, and higher order aberratons increases, and distortion is also difficult to correct.Therefore, the tight shot in the present embodiment meets 0.8<|F
1/ F
eff| during <2.2, there are preferably image quality and rational structure space form.
For the second setting relation, work as F
2/ F
effwhen exceeding lower limit 0.8, F
2relatively diminish, namely focal power becomes large relatively, and senior coma, astigmatism so can be caused to increase.Work as F
2/ F
effwhen exceeding the upper limit 1.9, F
2relative change is large, and namely focal power diminishes relatively, and optical system so can be caused long, and the 3rd lens combination bore strengthens, and cannot meet the requirement of market to optical system densification.
Above-mentioned two impose a condition, are mainly reflected in the control to aberration, balance, and the control to whole optical system size.By the control imposed a condition to two, improve the performance of optics tight shot.
In the utility model embodiment, optics tight shot is image-forming objective lens, and the image planes of optics tight shot are the one in charge coupled device ccd or CMOS semiconductor sensor CMOS.
Following content is by an embodiment for optics tight shot in the utility model.It should be noted that following table 1 and listed data and be not used to limit the utility model, any those skilled in the art are after reference the utility model, and when doing suitable variation to its parameter or setting, it must belong in category of the present utility model.
Table 1
In this table 1, list the interval between the radius in each face of 13 lens, adjacent surface respectively, and the refractive index of each lens and Abbe number.When being spaced apart 0, represent that the face of two lens overlaps.
Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, Fig. 5 A to Fig. 5 E is the image optics emulated data figure of optics tight shot in the utility model.Fig. 2 is spherical aberration (sphericalaberration) figure of optics tight shot, and wherein axis of ordinates represents beam size, and horizontal ordinate illustrates spherical aberration and axial chromatic aberration size.As shown in Figure 2, in the utility model, the spherical aberration size of optics tight shot controls between-0.03mm ~ 0.1mm.Fig. 3 is lateral chromatic aberration (lateralcolor) figure of optics tight shot, and wherein axis of ordinates represents beam size, and horizontal ordinate illustrates lateral chromatic aberration size in image planes.As shown in Figure 3, the lateral chromatic aberration of optics tight shot controls between-0.005mm ~ 0.001mm.Fig. 4 A and Fig. 4 B is respectively the curvature of field (fieldcurve) figure and distortion (distortinon) figure of tight shot, wherein ordinate all represents visual field size, the horizontal ordinate of curvature of field figure take millimeter as the curvature of field value that dimension represents camera lens, and the horizontal ordinate of distortion figure take number percent as the distortion size that dimension represents camera lens.From Fig. 4 A, meridianal curvature of field controls at about 0.1mm, and Sagittal field curvature controls at about 0.008mm, and from Fig. 4 B, maximum distortion is unloaded about-5%.Fig. 5 A to Fig. 5 E is the light sector diagram (rayfanplot) of the imaging image of optics tight shot, it is that the light being 486 nanometers, 588 nanometers and 656 nanometers for wavelength generates emulated data figure, horizontal ordinate is expressed as the beam size after normalization, and ordinate is light and the crossing height value of image planes.Figure shown by Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, Fig. 5 A to Fig. 5 E, all in the scope of standard, can verify that the tight shot of the present embodiment has good quality of optical imaging really thus.
In sum, in the utility model, optics tight shot is arranged in order from the object side to image side and comprises: the first lens combination, the second lens combination, diaphragm and the 3rd lens combination; Wherein, the focal power of the first lens combination is negative, the focal power of the second lens combination is just, the focal power of the 3rd lens combination is just, diaphragm is between the second lens combination and the 3rd lens combination, wherein, first lens combination comprises: focal power is positive biconvex first lens, focal power is negative double concave type second lens, focal power is negative double concave type the 3rd lens, focal power is positive biconvex the 4th lens, therefore, the demand of high definition imaging can be realized, expand the image planes of optics tight shot and visual field and improve the resolution of optics tight shot.
In addition, in the embodiment optical system that the utility model provides, the first lens combination, the second lens combination and the 3rd lens combination form anti-long distance structure, can realize the demand of Large visual angle.Rational focal power is distributed and stop position, makes camera lens volume compact.The luminous flux of a large amount of utilization improving optical systems of glue component, reduces ray machine tolerance on fit cumulative amount, and reduces tolerance sensitivity, assembly difficulty, and final lifting assembles yield.Rational glass combination and optimization, ensure that the imaging demand of high definition, finally achieves the effect of super large image planes, high resolving power, Large visual angle.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model embodiment and not depart from the spirit and scope of the utility model embodiment.Like this, if these amendments of the utility model embodiment and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (10)
1. an optics tight shot, is characterized in that, is arranged in order from the object side to image side and comprises: the first lens combination, the second lens combination, diaphragm and the 3rd lens combination;
Wherein, the focal power of described first lens combination is negative, the focal power of described second lens combination is just, the focal power of described 3rd lens combination is just, described diaphragm is between described second lens combination and described 3rd lens combination, wherein, described first lens combination comprises: focal power is positive biconvex first lens, focal power is negative double concave type second lens, focal power is negative double concave type the 3rd lens, focal power is positive biconvex the 4th lens.
2. optics tight shot as claimed in claim 1, it is characterized in that, described second lens combination comprises: focal power is positive biconvex the 5th lens, focal power is negative double concave type the 6th lens, and focal power is positive biconvex the 7th lens.
3. optics tight shot as claimed in claim 1, it is characterized in that, described 3rd lens combination comprises: focal power is for just, and concave-convex type the 8th lens of concave surface facing thing side, focal power are negative double concave type the 9th lens, focal power is positive biconvex the tenth lens, focal power is positive biconvex the 11 lens, focal power is negative double concave type the 12 lens, focal power is positive biconvex the 13 lens.
4. the optics tight shot as described in any one of claim 1-3, is characterized in that, described first lens combination, described second lens combination, described diaphragm and described 3rd lens combination form anti-long distance structure.
5. optics tight shot as claimed in claim 1, is characterized in that,
In described first lens combination, described first lens and described second lens glue together and form first group of cemented doublet, and described 3rd lens and described 4th lens glue together and form second group of cemented doublet.
6. optics tight shot as claimed in claim 2, is characterized in that,
In described second lens combination, described 6th lens and described 7th lens glue together and form the 3rd group of cemented doublet.
7. optics tight shot as claimed in claim 3, is characterized in that,
In described 3rd lens combination, described 8th lens, described 9th lens and described tenth lens glue together and form three balsaming lenss, and described 12 lens and described 13 lens glue together and form the 4th group of cemented doublet.
8. optics tight shot as claimed in claim 4, it is characterized in that, each lens in described first lens combination, described second lens combination, described 3rd lens combination are spherical lens.
9. optics tight shot as claimed in claim 4, it is characterized in that, the effective focal length of described first lens combination and the effective focal length of described optics tight shot meet first and set relation, and the effective focal length of described second lens combination and the effective focal length of described optics tight shot meet second and set relation;
Wherein, described first setting pass is: 0.8<|F
1/ F
eff| <2.2, described second setting pass is: 0.8<F
2/ F
eff<1.9, wherein F
efffor the effective focal length of described optics tight shot, F
1for the effective focal length of described first lens combination, F
2for the effective focal length of described second lens combination.
10. optics tight shot as claimed in claim 4, it is characterized in that, described optics tight shot is image-forming objective lens, and the image planes of described optics tight shot are the one in charge coupled device ccd or CMOS semiconductor sensor CMOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420575.9U CN204807793U (en) | 2015-06-17 | 2015-06-17 | Optics tight shot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420575.9U CN204807793U (en) | 2015-06-17 | 2015-06-17 | Optics tight shot |
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| Publication Number | Publication Date |
|---|---|
| CN204807793U true CN204807793U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520420575.9U Withdrawn - After Issue CN204807793U (en) | 2015-06-17 | 2015-06-17 | Optics tight shot |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629443A (en) * | 2016-03-30 | 2016-06-01 | 浙江大华技术股份有限公司 | Lens system and camera lens |
| CN106324806A (en) * | 2015-06-17 | 2017-01-11 | 浙江大华技术股份有限公司 | Optical fixed-focus lens |
| CN106405795A (en) * | 2016-10-18 | 2017-02-15 | 中国航空工业集团公司洛阳电光设备研究所 | Large-view-field large-relative-aperture solar blind ultraviolet optical system |
| TWI611236B (en) * | 2017-04-24 | 2018-01-11 | 黃俊裕 | Imaging lens |
| CN108732718A (en) * | 2017-04-24 | 2018-11-02 | 黄俊裕 | Imaging lens |
-
2015
- 2015-06-17 CN CN201520420575.9U patent/CN204807793U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324806A (en) * | 2015-06-17 | 2017-01-11 | 浙江大华技术股份有限公司 | Optical fixed-focus lens |
| CN106324806B (en) * | 2015-06-17 | 2019-07-16 | 浙江大华技术股份有限公司 | A kind of optics tight shot |
| CN105629443A (en) * | 2016-03-30 | 2016-06-01 | 浙江大华技术股份有限公司 | Lens system and camera lens |
| CN106405795A (en) * | 2016-10-18 | 2017-02-15 | 中国航空工业集团公司洛阳电光设备研究所 | Large-view-field large-relative-aperture solar blind ultraviolet optical system |
| CN106405795B (en) * | 2016-10-18 | 2019-01-08 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of big visual field object lens of large relative aperture solar blind UV system |
| TWI611236B (en) * | 2017-04-24 | 2018-01-11 | 黃俊裕 | Imaging lens |
| CN108732718A (en) * | 2017-04-24 | 2018-11-02 | 黄俊裕 | Imaging lens |
| CN108732718B (en) * | 2017-04-24 | 2020-09-29 | 沈阳市若明光学科技有限公司 | Imaging lens |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20190716 |
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| AV01 | Patent right actively abandoned |