CN206930827U - A kind of small-sized tight shot of short focus ultra-wide angle - Google Patents

A kind of small-sized tight shot of short focus ultra-wide angle Download PDF

Info

Publication number
CN206930827U
CN206930827U CN201720784266.9U CN201720784266U CN206930827U CN 206930827 U CN206930827 U CN 206930827U CN 201720784266 U CN201720784266 U CN 201720784266U CN 206930827 U CN206930827 U CN 206930827U
Authority
CN
China
Prior art keywords
lens
msup
mrow
wide angle
small
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201720784266.9U
Other languages
Chinese (zh)
Inventor
刘官禄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Yutong Optical Technology Co Ltd
Original Assignee
Dongguan Yutong Optical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Yutong Optical Technology Co Ltd filed Critical Dongguan Yutong Optical Technology Co Ltd
Priority to CN201720784266.9U priority Critical patent/CN206930827U/en
Application granted granted Critical
Publication of CN206930827U publication Critical patent/CN206930827U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Lenses (AREA)

Abstract

The utility model provides a kind of small-sized tight shot of short focus ultra-wide angle, including the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens being arranged in order along optical axis from object space to image space, the described first to the 7th lens meet following conditional respectively with whole camera lens：1.2<∣f1/f∣<2.5,1.15<∣f2/f∣<2.4,1.5<∣f3/f∣<2.1,5.0<∣f4/f∣<6.0,1.31<∣f5/f∣<1.65 1.11<∣f6/f∣<1.65 1.31<∣f7/f∣<1.95.The camera lens realizes day and night confocal function, in the case where visible ray is into sharply defined image without focusing can to infrared light also into sharply defined image, meanwhile, possess temperature compensation function, that is, reach in the environment of 30 °~+80 ° using do not run Jiao the characteristics of.

Description

A kind of small-sized tight shot of short focus ultra-wide angle
Technical field
It the utility model is related to lens technology field, more particularly to a kind of small-sized tight shot of short focus ultra-wide angle.
Background technology
With social economy, science and technology develop rapidly, safety defense monitoring system become more popular with it is high-end.Chip is more New to regenerate, the various aspects of performance of monitoring camera includes the angle of visual field, clear aperature, pixel, image planes size etc. and also optimized, wherein super Wide-angle tight shot is one of camera lens for accounting for demand significant proportion, is characterized in that focal length is short, and the angle of visual field is big, and the scope of monitoring is very Extensively, existing focusing wide angle lens focus is about generally 140 degree at 2.8mm or so, maximum field of view angle, exist distortion it is larger, Not high enough the technical problem of image planes edge resolution.
Utility model content
The utility model provides a kind of small-sized tight shot of short focus ultra-wide angle, solves existing short focus ultra-wide angle tight shot Existing distortion is larger, image planes edge resolution is not high enough and the technical problems such as the angle of visual field is smaller.
In order to solve the above-mentioned technical problem, technical solution adopted in the utility model is：
A kind of small-sized tight shot of short focus ultra-wide angle, including be arranged in order along optical axis from object space to image space the first lens, Second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens, the described first to the 7th lens with it is whole Individual camera lens meets following conditional respectively：
1.2<∣f1/f∣<2.5
1.15<∣f2/f∣<2.4
1.5<∣f3/f∣<2.1
5.0<∣f4/f∣<6.0
1.31<∣f5/f∣<1.65
1.11<∣f6/f∣<1.65
1.31<∣f7/f∣<1.95
Wherein, f is the focal length of whole camera lens, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the 3rd The focal length of lens, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f6 is the focal length of the 6th lens, and f7 is The focal length of 7th lens.
Further, the focal length f of whole camera lens meets following conditional：1.8mm≤f≤3.0mm.
Preferably, the angle of visual field FOV of the whole camera lens meets following relation：120°≤FOV≤180°；The whole mirror The aperture FNO of head meets following relation：FNO≥2.0；The optics overall length TTL of the whole camera lens meets following relation：13mm≤ TTL≤24mm。
Further, first lens are convex-concave negative-power lenses, and second lens are that concave-concave negative power is saturating Mirror, the 3rd lens are biconvex positive power lens, and the 4th lens are concavo-convex negative-power lenses, the 5th lens For biconvex positive power lens, the 6th lens are concave-concave negative-power lenses, and the 7th lens are biconvex positive light coke Lens.
Preferably, first lens and the 3rd lens are glass lens, second lens, the 4th lens, the 5th saturating Mirror, the 6th lens and the 7th lens are plastic lens.
Preferably, second lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens are respectively aspherical Lens, its shape meet following equation：
Y represents the radial coordinate value of vertical lens optical axis, and Z is that the non-spherical lens along optical axis direction is highly being y's During position, away from non-spherical lens summit apart from rise, c=1/R, R represent the curvature half at corresponding non-spherical lens face type center Footpath, k represent circular cone coefficient, and parameter A, B, C, D, E, F are high order aspheric surface coefficient.
Preferably, the length of the whole camera lens is less than 15.2mm.
Preferably, first lens are directly bearing on second lens, second lens and the 3rd lens Abutted by spacer ring, the 3rd lens are abutted with the 4th lens by spacer ring, the 4th lens and the described 5th saturating Mirror is abutted by soma anti-dazzling screens, and the 5th lens are abutted with the 6th lens by soma anti-dazzling screens, and the described 6th is saturating Mirror is abutted with the 7th lens by soma anti-dazzling screens.
Further, in addition to diaphragm, the diaphragm are close on the picture end surfaces of the 3rd lens.
The utility model provides a kind of small-sized tight shot of short focus ultra-wide angle, including is arranged successively from object space to image space along optical axis The first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens of row, described first Meet following conditional respectively to the 7th lens and whole camera lens：1.2<∣f1/f∣<2.5,1.15<∣f2/f∣<2.4,1.5<∣ f3/f∣<2.1,5.0<∣f4/f∣<6.0,1.31<∣f5/f∣<1.65 1.11<∣f6/f∣<1.65 1.31<∣f7/f∣<1.95. The mega pixel of camera lens visible ray two, large aperture F2.0 is realized by reasonable combination, has image quality good and so that infrared Can also reach two mega pixels on the premise of not focusing on again, realize can also be realized under night low-light (level) it is clear bright The function of bright monitored picture, simultaneously, additionally it is possible to reach and use not empty Jiao under -30~+80 degree environment.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the small-sized tight shot of short focus ultra-wide angle of the utility model.
Embodiment
Below in conjunction with the accompanying drawings, embodiment of the present utility model is specifically illustrated, accompanying drawing is only for reference and explanation uses, not structure The limitation of paired the utility model patent protection domain.
As shown in figure 1, a kind of small-sized tight shot of short focus ultra-wide angle, including be arranged in order along optical axis from object space to image space First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7, described One to the 7th lens meet following conditional respectively with whole camera lens：
1.2<∣f1/f∣<2.5
1.15<∣f2/f∣<2.4
1.5<∣f3/f∣<2.1
5.0<∣f4/f∣<6.0
1.31<∣f5/f∣<1.65
1.11<∣f6/f∣<1.65
1.31<∣f7/f∣<1.95
Wherein, f is the focal length of whole camera lens, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, f3 the The focal length of three lens 3, f4 are the focal length of the 4th lens 4, and f5 is the focal length of the 5th lens 5, and f6 is the focal length of the 6th lens 6, with And the focal length that f7 is the 7th lens 7.Specifically, first lens 1 are convex-concave negative-power lenses, and second lens 2 are Concave-concave negative-power lenses, the 3rd lens 3 are biconvex positive power lens, and the 4th lens 4 are concavo-convex negative power Lens, the 5th lens 5 are biconvex positive power lens, and the 6th lens 6 are concave-concave negative-power lenses, the described 7th Lens 7 are biconvex positive power lens.
In the present embodiment, the focal length f of whole camera lens meets following conditional：1.8mm≤f≤3.0mm.
In the present embodiment, the angle of visual field FOV of the whole camera lens meets following relation：120°≤FOV≤180°；It is described whole The aperture FNO of individual camera lens meets following relation：FNO≥2.0；The optics overall length TTL of the whole camera lens meets following relation： 13mm≤TTL≤24mm。
The length of whole camera lens is less than 15.2mm.
In the present embodiment, the lens 3 of the first lens 1 and the 3rd are glass lens, second lens 2, the 4th lens 4th, the 5th lens 5, the 6th lens 6 and the 7th lens 7 are plastic lens.Second lens 2, the 4th lens 4, the 5th lens 5, 6th lens 6 and the 7th lens 7 are respectively non-spherical lens, and its shape meets following equation：
Y represents the radial coordinate value of vertical lens optical axis, and Z is that the non-spherical lens along optical axis direction is highly being y's During position, away from non-spherical lens summit apart from rise, c=1/r, r represent the curvature half at corresponding non-spherical lens face type center Footpath, k represent circular cone coefficient, and parameter A, B, C, D, E, F are high order aspheric surface coefficient.Specifically, circular cone coefficient and high order aspheric surface Parameter value is as shown in the table corresponding to coefficient：
Wherein, S3, S4 are expressed as thing end surfaces and the image space end face of the second lens 2, and S7, S8 are respectively the 4th lens 4 thing end surfaces and image space end face, S9, S10 are respectively thing end surfaces and the image space end face of the 5th lens 5, and S11, S12 are respectively The thing end surfaces of 6th lens 6 and image space end face, S13, S14 are respectively thing end surfaces and the image space end face of the 7th lens 7.
When the fastening of each lens is whole camera lens, first lens 1 are directly bearing on second lens 2, and described the Two lens 2 are abutted with the 3rd lens 3 by spacer ring, and the 3rd lens 3 are abutted with the 4th lens 4 by spacer ring, 4th lens 4 are abutted with the 5th lens 5 by soma anti-dazzling screens, and the 5th lens 5 are logical with the 6th lens 6 Cross soma anti-dazzling screens to abut, the 6th lens 6 are abutted with the 7th lens 7 by soma anti-dazzling screens.Also include diaphragm, institute Diaphragm is stated to be close on the picture end surfaces of the 3rd lens.
In the present embodiment, the physical optical parameter of whole camera lens is as shown in the table：
Wherein, S1 and S2 is respectively thing end surfaces of the first lens and as end surfaces, and S5 and S6 are respectively the 3rd lens Thing end surfaces and as end surfaces；R is surface radius size, d be corresponding optical surface to next optical surface on optical axis away from From；Nd corresponds to the refractive index of d light (wavelength 587nm), "-" direction is represented to bear.
The utility model uses 2G+5P optical texture, and it is 2.1mm that can reach ultrashort focal length, 175 degree of maximum field of view Angle, while aberration control, within 50%, compact overall length is less than 15.2mm, there is 1080p high definition resolution ratio round the clock.
Above disclosed is only preferred embodiment of the present utility model, it is impossible to limits right of the present utility model with this Protection domain, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the model that the utility model is covered Enclose.

Claims (9)

  1. A kind of 1. small-sized tight shot of short focus ultra-wide angle, it is characterised in that including be arranged in order along optical axis from object space to image space One lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens, described first to the 7th Lens meet following conditional respectively with whole camera lens：
    1.2<∣f1/f∣<2.5
    1.15<∣f2/f∣<2.4
    1.5<∣f3/f∣<2.1
    5.0<∣f4/f∣<6.0
    1.31<∣f5/f∣<1.65
    1.11<∣f6/f∣<1.65
    1.31<∣f7/f∣<1.95
    Wherein, f is the focal length of whole camera lens, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the 3rd lens Focal length, f4 be the 4th lens focal length, f5 be the 5th lens focal length, f6 be the 6th lens focal length, and f7 be the 7th The focal length of lens.
  2. A kind of 2. small-sized tight shot of short focus ultra-wide angle according to claim 1, it is characterised in that：
    The focal length f of whole camera lens meets following conditional：1.8mm≤f≤3.0mm.
  3. A kind of 3. small-sized tight shot of short focus ultra-wide angle according to claim 2, it is characterised in that：
    The angle of visual field FOV of the whole camera lens meets following relation：120°≤FOV≤180°；
    The aperture FNO of the whole camera lens meets following relation：FNO≥2.0；
    The optics overall length TTL of the whole camera lens meets following relation：13mm≤TTL≤24mm.
  4. A kind of 4. small-sized tight shot of short focus ultra-wide angle according to claim 1, it is characterised in that：First lens are Convex-concave negative-power lenses, second lens are concave-concave negative-power lenses, and the 3rd lens are that biconvex positive light coke is saturating Mirror, the 4th lens are concavo-convex negative-power lenses, and the 5th lens are biconvex positive power lens, the 6th lens For concave-concave negative-power lenses, the 7th lens are biconvex positive power lens.
  5. A kind of 5. small-sized tight shot of short focus ultra-wide angle according to claim 4, it is characterised in that：First lens and 3rd lens are glass lens, and second lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens are that plastics are saturating Mirror.
  6. A kind of 6. small-sized tight shot of short focus ultra-wide angle according to claim 4 or 5, it is characterised in that：Described second is saturating Mirror, the 4th lens, the 5th lens, the 6th lens and the 7th lens are respectively non-spherical lens, and its shape meets following equation：
    <mrow> <mi>Z</mi> <mrow> <mo>(</mo> <mi>y</mi> <mo>)</mo> </mrow> <mo>=</mo> <mfrac> <mrow> <msup> <mi>cy</mi> <mn>2</mn> </msup> </mrow> <mrow> <mn>1</mn> <mo>+</mo> <msqrt> <mrow> <mn>1</mn> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>k</mi> <mo>)</mo> </mrow> <msup> <mi>c</mi> <mn>2</mn> </msup> <msup> <mi>y</mi> <mn>2</mn> </msup> </mrow> </msqrt> </mrow> </mfrac> <mo>+</mo> <msup> <mi>Ay</mi> <mn>4</mn> </msup> <mo>+</mo> <msup> <mi>By</mi> <mn>6</mn> </msup> <mo>+</mo> <msup> <mi>Cy</mi> <mn>8</mn> </msup> <mo>+</mo> <msup> <mi>Dy</mi> <mn>10</mn> </msup> <mo>+</mo> <msup> <mi>Ey</mi> <mn>12</mn> </msup> <mo>+</mo> <msup> <mi>Fy</mi> <mn>14</mn> </msup> </mrow>
    Y represents the radial coordinate value of vertical lens optical axis, and Z is that the non-spherical lens along optical axis direction is highly being y position When, away from non-spherical lens summit apart from rise, c=1/R, R represent the radius of curvature at corresponding non-spherical lens face type center, k Circular cone coefficient is represented, parameter A, B, C, D, E, F are high order aspheric surface coefficient.
  7. A kind of 7. small-sized tight shot of short focus ultra-wide angle according to claim 1, it is characterised in that：The whole camera lens Length is less than 15.2mm.
  8. A kind of 8. small-sized tight shot of short focus ultra-wide angle according to claim 1, it is characterised in that：First lens with Second lens are directly bearing on, and second lens are abutted with the 3rd lens by spacer ring, the 3rd lens and institute The 4th lens to be stated to abut by spacer ring, the 4th lens are abutted with the 5th lens by soma anti-dazzling screens, and the described 5th Lens are abutted with the 6th lens by soma anti-dazzling screens, and the 6th lens pass through soma anti-dazzling screens with the 7th lens Abut.
  9. A kind of 9. small-sized tight shot of short focus ultra-wide angle according to claim 1, it is characterised in that：Also include diaphragm, institute Diaphragm is stated to be close on the picture end surfaces of the 3rd lens.
CN201720784266.9U 2017-06-30 2017-06-30 A kind of small-sized tight shot of short focus ultra-wide angle Active CN206930827U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720784266.9U CN206930827U (en) 2017-06-30 2017-06-30 A kind of small-sized tight shot of short focus ultra-wide angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720784266.9U CN206930827U (en) 2017-06-30 2017-06-30 A kind of small-sized tight shot of short focus ultra-wide angle

Publications (1)

Publication Number Publication Date
CN206930827U true CN206930827U (en) 2018-01-26

Family

ID=61353246

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720784266.9U Active CN206930827U (en) 2017-06-30 2017-06-30 A kind of small-sized tight shot of short focus ultra-wide angle

Country Status (1)

Country Link
CN (1) CN206930827U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107193114A (en) * 2017-06-30 2017-09-22 东莞市宇瞳光学科技股份有限公司 A kind of small-sized tight shot of short focus ultra-wide angle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107193114A (en) * 2017-06-30 2017-09-22 东莞市宇瞳光学科技股份有限公司 A kind of small-sized tight shot of short focus ultra-wide angle

Similar Documents

Publication Publication Date Title
CN105974561B (en) Wide-angle camera
CN105182507B (en) A kind of wide-angle tight shot
CN103502868B (en) Imaging lens system and the camera head being provided with this imaging lens system
CN106772935B (en) Lens system and fixed-focus lens
CN107193114A (en) A kind of small-sized tight shot of short focus ultra-wide angle
CN102466867B (en) Optical camera lens group
CN201837770U (en) Near infrared wide-angle lens
CN206505215U (en) The big thang-kng small-sized wide-angle lens of 2.8mm
CN106772941A (en) The big thang-kng small-sized wide-angle lens of 2.8mm
CN106772946A (en) Small-sized glass modeling mixing is without thermalization tight shot
CN106597641A (en) Small-size low-cost 4MP athermalized prime lens
CN205157870U (en) Clear tight shot of superelevation
CN101950066A (en) Near-infrared wide-angle lens
CN106772958A (en) A kind of small-sized tight shot of short focus ultra-wide angle
CN107367828A (en) A kind of large aperture 4K tight shots
CN113985589A (en) Zoom lens and optical system
CN210155394U (en) Fixed focus lens
CN105511061A (en) Super-wide high-definition optical lens
CN207264008U (en) A kind of large aperture 4K tight shots
CN210742599U (en) Starlight-level optical lens
CN206930827U (en) A kind of small-sized tight shot of short focus ultra-wide angle
CN104459958B (en) Prime lens used for infrared camera
CN106680973A (en) Miniaturized large-view-field high-definition athermal prime lens
CN204807794U (en) Zoom lens system and camera lens
CN206515547U (en) A kind of small-sized tight shot of short focus ultra-wide angle

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Zhang Pinguang

Inventor after: Liu Guanlu

Inventor after: He Jianwei

Inventor after: Mao Caiying

Inventor before: Liu Guanlu

CB03 Change of inventor or designer information