CN102928965A - Novel optical lens - Google Patents
Novel optical lens Download PDFInfo
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- CN102928965A CN102928965A CN2012104027540A CN201210402754A CN102928965A CN 102928965 A CN102928965 A CN 102928965A CN 2012104027540 A CN2012104027540 A CN 2012104027540A CN 201210402754 A CN201210402754 A CN 201210402754A CN 102928965 A CN102928965 A CN 102928965A
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- lens
- optical filter
- cavity
- optical
- novel optical
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Abstract
The invention discloses a novel optical lens. The novel optical lens comprises a lens cone; a first lens, a diaphragm, a second lens, a third lens, a fourth lens, and an optical filter are sequentially arranged in a cavity of the lens cone; the first lens is a crescent aspheric lens, a first surface of the first lens is a spherical surface, and a second surface of the first lens is a hyper surface; the second lens is a drum-shaped aspheric lens, a first surface of the second lens is a hyper surface, and a second surface of the second lens is an oval aspheric surface; and the third lens and the fourth lens are combined into laminated glass. The novel optical lens is used for monitoring and vehicle-mounted occasions.
Description
[technical field]
The present invention relates to a kind of optical lens, relate in particular to a kind of optical lenses.
[background technology]
The monitoring of using at present, the vehicle-mounted such shortcoming of camera lens ubiquity: distort larger, physical dimension is larger.On the market now monitoring, the on-vehicle lens of main flow mainly be the camera lens that distorts greatly, no matter captured image is that sharpness or the aspects such as authenticity of picture of integral body is all not ideal enough, can not satisfy picture homogeneity and the authenticity of monitoring, vehicle-mounted requirement far away; And the profile of monitoring, on-vehicle lens is bigger than normal, and it is generally long to be used for the camera lens of CCD sensitive film, uses monitoring, seems that volume is larger on vehicle-mounted.
For solving above-mentioned existing problem, the present invention makes useful improvement.
[summary of the invention]
The present invention has overcome the deficiencies in the prior art, provide a kind of volume little, can be used in that monitoring, vehicle-mounted being applied to are monitored, the super wide angle small aberration optical lens of vehicle-mounted micro.
In order to solve the technical matters of above-mentioned existence, the present invention adopts following technical proposal:
A kind of optical lenses, comprise lens barrel, in the cavity of lens barrel, be provided with successively first lens, diaphragm, the second lens, the 3rd lens and the 4th lens and optical filter, it is characterized in that described first lens is the non-spherical lens of curved month type, the first surface of this first lens is sphere, and second is the hyperbolic curve face; The second lens are the drum type non-spherical lens, and the first surface of these the second lens is hyperbolic curve, and second is oval aspheric surface; The 3rd lens and the 4th lens combination are synthesized glyglass.
Aforesaid a kind of optical lenses is characterized in that: in the described lens barrel cavity, the rear portion of the 4th lens also is provided with optical filter, and this optical filter is fixed in the cavity.
Aforesaid a kind of optical lenses is characterized in that: described first lens is negative refraction, and the second lens are positive refraction, and the 3rd, the 4th lens are positive refraction.
Aforesaid a kind of optical lenses is characterized in that: the aspheric surface configuration of first lens, the second lens satisfies following equation: Z=cy
2/ 1+ √ 1-(1+k) c
2y
2+ α
1y
2+ α
2y
4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16
The present invention compared with prior art has advantages of as follows:
1, the distortion of the diagonal angle 166 of camera lens of the present invention degree can be little of 70%, and degree is abnormal at horizontal field of view angle 140 is varied down to 30%, and the 166 degree distortion of existing camera lens generally are that 85%, 140 degree distortion generally is 50%;
2, the volume of camera lens of the present invention has micro clearly, external diameter 9mm, and optics overall length 10.3mm, and have the camera lens external diameter now generally greater than 17mm, the optical system overall length is greater than 13mm;
3, illumination image planes of the present invention are whole evenly, bright, and the most centers of existing numerical digit camera lens are bright, dark all around;
4, color of the present invention is clearly demarcated, and color reducibility and image planes are Well-recovered;
5, the present invention has also solved former non-spherical glass lens processing difficulties and the problem that yields is low and cost is relatively high that causes.
[description of drawings]
Fig. 1 is sectional view of the present invention.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
A kind of optical lenses comprises lens barrel 1 and lens 2, lens 3, lens 4, lens 5.In the cavity of lens barrel 1, be provided with successively lens 2, diaphragm 6, lens 3, lens 4, lens 5, optical filter 7; Described first lens 2 is the non-spherical lens of curved month type, and the first surface of this first lens 2 is sphere, and second is the hyperbolic curve face.The second lens 3 have and reduce the ability that distorts, owing to this position and high index of refraction in optical system makes its external diameter design to get the less possibility that just becomes.The 3rd lens 4 and the 4th lens 5 are combined into glyglass, thereby efficiently solve the problem of various aberration equilibriums.
For reducing the change in refraction angle of light between each lens, be controlled to image distortion, need to reduce the distance between the second lens 3 and the 3rd lens 4 on the structure as far as possible; For improving curvature of field aberration, the first surface of the second lens 3 is designed to hyperbolic curve, and the second face is designed to oval aspheric surface.In described lens barrel 1 cavity; the rear portion of the 4th lens 5 also is provided with optical filter 7; this optical filter 7 is fixed in lens barrel 1 cavity; the below of optical filter 7 is exactly the CMOS sensitive chip; light enters from optical filter 7; 7 pairs of CMOS sensitive chips of optical filter have certain protective effect; also filter simultaneously a part of light; has good color reducibility when making image color beautiful and sharp keen; this optical filter 7 has also guaranteed the carrying out smoothly of packaging technology of back except the problem that solves the color aspect.
The aspheric surface configuration of first lens 2, the second lens 3 satisfies following equation: Z=cy
2/ 1+ √ 1-(1+k) c
2y
2+ α
1y
2+ α
2y
4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16In formula, parameter c is the corresponding curvature of radius, and y is radial coordinate (its unit is identical with length of lens unit), and k is the circular cone whose conic coefficient.When k-factor face shape curve less than-1 time is hyperbolic curve, equaling at-1 o'clock is para-curve, is oval in the time of between-1 to 0, equals at 0 o'clock for circular, be oblateness greater than 0 o'clock.α
1To α
8Represent respectively the corresponding coefficient of each radial coordinate, can accurately set the geomery of lens front and back both-sided aspherical by above parameter.In the present invention, first lens 2 first surfaces are spherical shape, and requiring k-factor is that 0, the second aspherical shape is the hyperbolic curve face, and the scope of its coefficient k should be less than-1; The first surface aspheric surface of the second lens 3 and second aspherical shape are respectively hyperbolic curve face and ellipse, and its k-factor is less than between-1 and-1 to 0.
The first lens 2 of system has negative refractive power, and the second lens 3 have positive refractive power, and the 3rd, the 4th lens 4,5 have positive refractive power, so that the picture side of optical system main face forward shift, thereby so that system length shortening.
Claims (1)
1. optical lenses, comprise lens barrel (1), in the cavity of lens barrel (1), be provided with successively first lens (2), diaphragm (6), the second lens (3), the 3rd lens (4) and the 4th lens (5) and optical filter (7), it is characterized in that described first lens (2) is the non-spherical lens of curved month type, the first surface of this first lens (2) is sphere, and second is the hyperbolic curve face; The second lens (3) are the drum type non-spherical lens, and the first surface of these the second lens (3) is hyperbolic curve, and second is oval aspheric surface; The 3rd lens (4) and the 4th lens (5) are combined into glyglass; In described lens barrel (1) cavity, the rear portion of the 4th lens (5) also is provided with optical filter (7), this optical filter (7) is fixed in the cavity, described first lens (2) is negative refraction, the second lens (3) are positive refraction, three, the 4th lens (4), (5) are positive refraction, and the aspheric surface configuration of first lens (2), the second lens (3) satisfies following equation: Z=cy
2/ 1+ √ 1-(1+k) c
2y
2+ α
1y
2+ α
2y
4+ α
3y
6+ α
4y
8+ α
5y
10+ α
6y
12+ α
7y
14+ α
8y
16
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104027540A CN102928965A (en) | 2012-10-20 | 2012-10-20 | Novel optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104027540A CN102928965A (en) | 2012-10-20 | 2012-10-20 | Novel optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928965A true CN102928965A (en) | 2013-02-13 |
Family
ID=47643802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104027540A Pending CN102928965A (en) | 2012-10-20 | 2012-10-20 | Novel optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102928965A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012859A1 (en) * | 2002-07-17 | 2004-01-22 | Pentax Corporation | Zoom lens system |
| US20060119957A1 (en) * | 2004-12-08 | 2006-06-08 | Ching-Chin Wu | Zoom lens |
| JP2006337806A (en) * | 2005-06-03 | 2006-12-14 | Matsushita Electric Ind Co Ltd | Zoom lens |
| CN201397416Y (en) * | 2009-01-22 | 2010-02-03 | 中山联合光电科技有限公司 | Ultra-wide angle small aberration optical lens |
-
2012
- 2012-10-20 CN CN2012104027540A patent/CN102928965A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012859A1 (en) * | 2002-07-17 | 2004-01-22 | Pentax Corporation | Zoom lens system |
| US20060119957A1 (en) * | 2004-12-08 | 2006-06-08 | Ching-Chin Wu | Zoom lens |
| JP2006337806A (en) * | 2005-06-03 | 2006-12-14 | Matsushita Electric Ind Co Ltd | Zoom lens |
| CN201397416Y (en) * | 2009-01-22 | 2010-02-03 | 中山联合光电科技有限公司 | Ultra-wide angle small aberration optical lens |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130213 |