CN206224040U - Wide-angle lens - Google Patents
Wide-angle lens Download PDFInfo
- Publication number
- CN206224040U CN206224040U CN201621248142.0U CN201621248142U CN206224040U CN 206224040 U CN206224040 U CN 206224040U CN 201621248142 U CN201621248142 U CN 201621248142U CN 206224040 U CN206224040 U CN 206224040U
- Authority
- CN
- China
- Prior art keywords
- eyeglass
- focal length
- wide
- radius
- angle lens
- 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.)
- Expired - Fee Related
Links
- 239000011521 glass Substances 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000004075 alteration Effects 0.000 abstract description 33
- 238000010586 diagram Methods 0.000 description 15
- 239000004568 cement Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 5
- 230000007306 turnover Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Abstract
The utility model discloses a kind of wide-angle lens, being sequentially the 5th eyeglass and one for having the first eyeglass of negative refractive power, second eyeglass with negative refractive power, the 3rd eyeglass with positive refractive power, the 4th eyeglass with positive refractive power, one with negative refractive power by thing side to image side has the 6th eyeglass of positive refractive power, and the focal length of the 4th eyeglass is f4, the focal length of the 5th eyeglass is f5, the focal length of the 6th eyeglass is f6, more meets relationship below：0.5 ＜ (f4+f5)/f6 ＜ 0.05, consequently, it is possible to can effective update the system aberration.
Description
Technical field
The utility model is to be related to a kind of camera lens, espespecially a kind of wide-angle lens.
Background technology
The focal length of wide-angle lens is shorter than standard lens, and its visual angle is larger, the depth of field is deeper, in the scenery that same viewing point is arrived
Scope is more much bigger than what human eye was seen, can photograph more scenery, therefore, monitoring and automobile-used camera lens are commonly applied to,
Contribute to reduction scene to differentiate relevant issues.
Common wide-angle lens such as China's Mainland patent CN 101359087 " wide-angle lens and use the wide-angle lens
The vehicle fitting of head ", it is sequentially first lens group with negative power and with positive light from thing side to image side
Second lens group of focal power, and meet relational expression：- 0.15 ＜ f10/f12 ＜ -0.05,0.3 ＜ f10/f14 ＜ 0.8, wherein,
F10 represents the system focal length of the wide-angle lens, and f12 represents the effective focal length of first lens group, and f14 represents second lens
The effective focal length of group.
However, this system is when visual angle is more than 90 °, effective update the system aberration is will be unable to, and under causing image quality
Drop, therefore, how effective update the system aberration and image quality is improved, actually a big problem.
Utility model content
Main purpose of the present utility model, is to solve that effectively update the system aberration and asking for image quality cannot be improved
Topic.
Be that up to above-mentioned purpose, the utility model provides a kind of wide-angle lens, by thing side to image side be sequentially one first eyeglass,
One second eyeglass, one the 3rd eyeglass, an aperture, one the 4th eyeglass, one the 5th eyeglass and one the 6th eyeglass, first eyeglass tool
There is negative refractive power, and its thing side is convex surface, image side surface is concave surface, and second eyeglass has negative refractive power, and its thing side is
Convex surface, image side surface is concave surface, and the 3rd eyeglass has positive refractive power, and its thing side is convex surface, the 4th mirror with image side surface
Piece has positive refractive power, and its thing side is convex surface with image side surface, and the 5th eyeglass has negative refractive power, and its thing side is recessed
Face, image side surface is convex surface, and the 6th eyeglass has positive refractive power, and its thing side is convex surface with image side surface, wherein, the 4th mirror
The focal length of piece is f4, and the focal length of the 5th eyeglass is f5, and the focal length of the 6th eyeglass is f6, more meets relationship below：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
It is that, up to above-mentioned purpose, the utility model provides a kind of wide-angle lens again, one first mirror is sequentially by thing side to image side
Piece, one second eyeglass, one the 3rd eyeglass, an aperture, one the 4th eyeglass, one the 5th eyeglass and one the 6th eyeglass, first mirror
Piece has negative refractive power, and its thing flank radius is more than image side curvature radius, and thing flank radius numerical value just, to be somebody's turn to do
Second eyeglass one has negative refractive power, and its thing flank radius is more than image side curvature radius, and thing flank radius number
It is worth for just, the 3rd eyeglass has positive refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
For just, the 4th eyeglass has positive refractive power, its thing flank radius is more than image side curvature radius, and thing side to radius distance value
For just, the 5th eyeglass has negative refractive power, its thing flank radius is more than image side curvature radius to curvature radius numerical value,
And thing flank radius numerical value is negative, the 6th eyeglass has positive refractive power, and its thing flank radius is bent more than image side surface
Rate radius, and thing flank radius numerical value is for just, wherein, the focal length of the 4th eyeglass is f4, and the focal length of the 5th eyeglass is
F5, the focal length of the 6th eyeglass is f6, more meets relationship below：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
In sum, by meeting the ＜ of relational expression -0.5 (f4+f5)/f6 ＜ -0.05, can effective update the system picture
Difference, and configured by appropriate refractive power, the image of high-quality can be produced.
Brief description of the drawings
Fig. 1, is the optical system schematic diagram of the utility model first embodiment.
Fig. 2, is the aberration schematic diagram of the utility model first embodiment.
Fig. 3 A~3C, are the lateral light fan schematic diagram of the utility model first embodiment.
Fig. 4, is the optical system schematic diagram of the utility model second embodiment.
Fig. 5, is the aberration schematic diagram of the utility model second embodiment.
Fig. 6 A~6C, are the lateral light fan schematic diagram of the utility model second embodiment.
Fig. 7, is the optical system schematic diagram of the utility model 3rd embodiment.
Fig. 8, is the aberration schematic diagram of the utility model 3rd embodiment.
Fig. 9 A~9C, are the lateral light fan schematic diagram of the utility model 3rd embodiment.
Specific embodiment
The utility model is described in detail below in conjunction with the drawings and specific embodiments, but not as to the utility model
Restriction.
Refer to shown in Fig. 1 to Fig. 9 C, the utility model is a kind of wide-angle lens, and being sequentially one by thing side to image side has
First eyeglass L1 of negative refractive power, one have the second eyeglass L2 of negative refractive power, the 3rd eyeglass L3, one with positive refractive power
Aperture S, one have what the 4th eyeglass L4 of positive refractive power, one had the 5th eyeglass L5 of negative refractive power, one with positive refractive power
6th eyeglass L6 and an optical filter 10, the thing side of first eyeglass L1 is convex surface, and image side surface is concave surface, and its thing side is bent
Rate radius is more than image side curvature radius, and thing flank radius numerical value for just, the thing side of second eyeglass L2 is convex surface,
Image side surface is concave surface, and its thing flank radius is more than image side curvature radius, and thing flank radius numerical value just, to be somebody's turn to do
The thing side of the 3rd eyeglass L3 is convex surface with image side surface, and its thing flank radius is more than image side curvature radius, and thing side
Curvature radius numerical value is for just, thing side and the image side surface of the 4th eyeglass L4 are convex surface, and its thing flank radius is more than
Image side curvature radius, and thing flank radius numerical value is for just, the thing side of the 5th eyeglass L5 is concave surface, and image side surface is convex
Face, its thing flank radius be more than image side curvature radius, and thing flank radius numerical value be it is negative, the 6th eyeglass L6's
Thing side is convex surface with image side surface, and its thing flank radius is more than image side curvature radius, and thing flank radius number
It is worth for just.
Wherein, first eyeglass L1, the 4th eyeglass L4, the 5th eyeglass L5 material be glass, and its thing side with
Image side surface is sphere, and the 4th eyeglass L4 and the 5th eyeglass L5 is a glass cemented doublet, thus, it can be ensured that its
Image quality, not only the effect of color difference eliminating is more preferable, more be able to can still possess good under -40 DEG C to 85 DEG C of environment temperature
Good image quality.And the material of second eyeglass L2, the 6th eyeglass L6 is plastic cement, and its thing side and image side surface are aspheric
Face, and in the utility model, the material of the 3rd eyeglass L3 can be glass or plastic cement, if glass, then its thing side with
Image side surface is sphere, and if plastic cement, its thing side and image side surface are then for aspherical.
Additionally, the focal length of the 4th eyeglass L4 is f4, the focal length of the 5th eyeglass L5 is f5, the focal length of the 6th eyeglass L6
It is f6, more meets relationship below：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
So can effective update the system aberration.
And the refractive index of the 4th eyeglass L4 is N4, the refractive index of the 5th eyeglass L5 is N5, more meets relationship below：
0.2<N5-N4<0.3
Can effective update the system aberration.
The system length of the wide-angle lens is TTL, and the overall effective focal length of the wide-angle lens is f, more meets following relation
Formula：
8≦TTL/f≦17
Consequently, it is possible to the effect of system compact can be reached.
Finally, the focal length of second eyeglass L2 is f2, and the focal length of the 3rd eyeglass L3 is f3, the focal length of the 4th eyeglass L4
It is f4, the focal length of the 5th eyeglass L5 is f5, more meets relationship below：
-10≦(f2+f3)/(f4+f5)≦0
By meeting this relational expression, it can be ensured that turnover of the light before aperture S is smaller, to reduce system sensitivity.
It is continuous to refer to shown in Fig. 1, it is the optical system schematic diagram of the utility model first embodiment, by thing side to image side sequentially
It is one first eyeglass L1, one second eyeglass L2, one the 3rd eyeglass L3, an aperture S, one the 4th eyeglass L4, one the 5th eyeglass L5, one
6th eyeglass L6 and an optical filter 10, first eyeglass L1 have negative refractive power, and its thing side is convex surface, and image side surface is recessed
Face, second eyeglass L2 has negative refractive power, and its thing side is convex surface, and image side surface is concave surface, and the 3rd eyeglass L3 has just
Refractive power, and its thing side is convex surface with image side surface, the 4th eyeglass L4 has positive refractive power, and its thing side is equal with image side surface
It is convex surface, the 5th eyeglass L5 has negative refractive power, its thing side is concave surface, and image side surface is convex surface, and the 6th eyeglass L6 has
Positive refractive power, its thing side is convex surface with image side surface.
And in the present embodiment, first eyeglass L1, the 4th eyeglass L4, the material of the 5th eyeglass L5 are glass, and
Its thing side is sphere with image side surface, and the 4th eyeglass L4 and the 5th eyeglass L5 is a glass cemented doublet, using glass cement
Eyeglass is closed to may insure its image quality and can effectively correct aberration, and second eyeglass L2, the 3rd eyeglass L3, the 6th
The material of eyeglass L6 is plastic cement, and its thing side is aspherical with image side surface.
The detailed numerical value of the present embodiment is as shown in Table 1：
Table one
Wherein, surface 1 is the thing side of first eyeglass L1, and surface 2 is the image side surface of first eyeglass L1, and surface 3 is
The thing side of second eyeglass L2, surface 4 is the image side surface of second eyeglass L2, and surface 5 is the thing side of the 3rd eyeglass L3,
Surface 6 is the image side surface of the 3rd eyeglass L3, and surface 8 is the thing side of the 4th eyeglass L4, and surface 10 is the 5th eyeglass L5
Thing side, surface 11 for the 5th eyeglass L5 image side surface, surface 12 for the 6th eyeglass L6 thing side, surface 13 for should
The image side surface of the 6th eyeglass L6, each embodiment of the present utility model is all same, does not just add after to repeat.
And the distance of the thing side at intervals of first eyeglass L1 on surface 1 to first eyeglass L1 image side surface away from
From；The image side surface at intervals of first eyeglass L1 on surface 2 to the thing side of second eyeglass L2 distance；The interval on surface 3
For second eyeglass L2 thing side to second eyeglass L2 image side surface distance, by that analogy, to surface 15 at intervals of
The image side surface of the optical filter 10 to the imaging surface 20 distance.In each embodiment, the definition at interval is also identical, also not then at rear
Add to repeat.
And the overall effective focal length of the wide-angle lens is 1.76mm, f-number Fno is 2.2, and field range FOV is 180 °.
In the present embodiment, relationship below is met：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
Wherein, the focal length of the 4th eyeglass L4 is f4, and the focal length of the 5th eyeglass L5 is f5, the focal length of the 6th eyeglass L6
It is f6, in the present embodiment, (f4+f5)/f6=-0.06 therefore, it can effective update the system aberration.
The present embodiment also meets following relationship：
0.2<N5-N4<0.3
And the refractive index of the 4th eyeglass L4 is N4, the refractive index of the 5th eyeglass L5 is N5, in the present embodiment, N5-
N4=0.22, therefore the present embodiment can effective update the system aberration.
Additionally, the present embodiment also meets following relationship：
8≦TTL/f≦17
The system length of the wide-angle lens is TTL, and the overall effective focal length of the wide-angle lens is f, in the present embodiment,
TTL/f=10.22, therefore the present embodiment can reach the effect of system compact.
Finally, the present embodiment meets relationship below：
-10≦(f2+f3)/(f4+f5)≦0
The focal length of second eyeglass L2 is f2, and the focal length of the 3rd eyeglass L3 is f3, and the focal length of the 4th eyeglass L4 is f4,
The focal length of the 5th eyeglass L5 is f5, in the present embodiment, (f2+f3)/(f4+f5)=- 7.18, by may insure that light exists
Turnover before aperture S is smaller, to reduce system sensitivity.
Continuous collocation is referred to shown in Fig. 2, Fig. 3 A~Fig. 3 C, respectively the chromaticity difference diagram and transverse direction of the utility model first embodiment
Light fan figure, in Fig. 2, the wavelength of line segment A is 0.46 μm, and the wavelength of line segment B is 0.54 μm, and the wavelength of line segment C is 0.64 μm, and
On the basis of 0.54 μm of wavelength, its aberration is between -0.2 μm to 7 μm；Fig. 3 A~Fig. 3 C are then transverse direction at different temperatures
Light fan figure, its Y-axis scope is between -20 microns (μm) between 20 microns (μm), it can be seen that by 20 DEG C of normal temperature to -40 DEG C of low temperature,
Or during 85 DEG C of high temperature, its aberration changes all within 10 μm, therefore, the aberration and aberration of the present embodiment can be repaiied effectively
Just, there is preferably image quality, and by making the setting of the glass cemented doublet, therefore in -40 DEG C to 85 DEG C of harsh ring
Under border, its image quality is still can ensure that.
Further, since second eyeglass L2, the 3rd eyeglass L3, the 6th eyeglass L6's is plastic cement, and thing side and picture
Side is aspherical, therefore can meet following aspherical equation formula：
Wherein, c=1/r, r are surface curvature radius, and h is height of the light on this surface, and k is conical surface coefficient, and A is second
Level number, B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number, and E is the tenth level number, and F is the 12nd level
Number, G is the tenth quadravalence coefficient, and H is the 16th level number.
And second eyeglass L2, the 3rd eyeglass L3, each aspherical parameter such as table of the 6th eyeglass L6 in the present embodiment
Shown in two：
Table two
Continuous is the optical system schematic diagram of the utility model second embodiment refering to shown in Fig. 4, and it is real that its configuration is same as first
Example is applied, so repeat no more, and in the present embodiment, first eyeglass L1, the 4th eyeglass L4, the material of the 5th eyeglass L5
Glass is similarly, and its thing side and image side surface are sphere, the 4th eyeglass L4 and the 5th eyeglass L5 is glass gluing mirror
Piece, may insure its image quality and can effectively correct aberration using glass cemented doublet, and second eyeglass L2, the 3rd
Eyeglass L3, the material of the 6th eyeglass L6 are plastic cement, and its thing side is aspherical with image side surface.
The detailed numerical value of the present embodiment is as shown in Table 3：
Table three
And the overall effective focal length of the wide-angle lens is 1.92mm, f-number Fno is 2, and field range FOV is 180 °.
In the present embodiment, relationship below is met：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
Wherein, the focal length of the 4th eyeglass L4 is f4, and the focal length of the 5th eyeglass L5 is f5, the focal length of the 6th eyeglass L6
It is f6, in the present embodiment, (f4+f5)/f6=-0.09 therefore, it can effective update the system aberration.
The present embodiment also meets following relationship：
0.2<N5-N4<0.3
And the refractive index of the 4th eyeglass L4 is N4, the refractive index of the 5th eyeglass L5 is N5, in the present embodiment, N5-
N4=0.25, therefore the present embodiment can effective update the system aberration.
Additionally, the present embodiment also meets following relationship：
8≦TTL/f≦17
The system length of the wide-angle lens is TTL, and the overall effective focal length of the wide-angle lens is f, in the present embodiment,
TTL/f=9.37, therefore the present embodiment can reach the effect of system compact.
Finally, the present embodiment meets relationship below：
-10≦(f2+f3)/(f4+f5)≦0
The focal length of second eyeglass L2 is f2, and the focal length of the 3rd eyeglass L3 is f3, and the focal length of the 4th eyeglass L4 is f4,
The focal length of the 5th eyeglass L5 is f5, in the present embodiment, (f2+f3)/(f4+f5)=- 4.16, and by meeting this relational expression,
May insure that turnover of the light before aperture S is smaller, to reduce system sensitivity.
Continuous collocation is referred to shown in Fig. 5, Fig. 6 A~Fig. 6 C, respectively the chromaticity difference diagram and transverse direction of the utility model second embodiment
Light fan figure, in Fig. 5, the wavelength of line segment A is 0.46 μm, and the wavelength of line segment B is 0.54 μm, and the wavelength of line segment C is 0.64 μm, and
On the basis of 0.54 μm of wavelength, its aberration is between -0.2 μm to 8 μm；Fig. 6 A~Fig. 6 C are then transverse direction at different temperatures
Light fan figure, its Y-axis scope is between -20 microns (μm) between 20 microns (μm), it can be seen that by 20 DEG C of normal temperature to -40 DEG C of low temperature,
Or during 85 DEG C of high temperature, its aberration changes all within 10 μm, therefore, the aberration and aberration of the present embodiment can be repaiied effectively
Just, there is preferably image quality, and by making the setting of the glass cemented doublet, therefore in -40 DEG C to 85 DEG C of harsh ring
Under border, its image quality is still can ensure that.
Further, since second eyeglass L2, the 3rd eyeglass L3, the 6th eyeglass L6's is plastic cement, and thing side and picture
Side is aspherical, therefore can meet following aspherical equation formula：
Wherein, c=1/r, r are surface curvature radius, and h is height of the light on this surface, and k is conical surface coefficient, and A is second
Level number, B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number, and E is the tenth level number, and F is the 12nd level
Number, G is the tenth quadravalence coefficient, and H is the 16th level number.
And second eyeglass L2, the 3rd eyeglass L3, each aspherical parameter such as table of the 6th eyeglass L6 in the present embodiment
Shown in four：
Table four
Continuous is the optical system schematic diagram of the utility model 3rd embodiment refering to shown in Fig. 7, and its configuration is generally same as
First embodiment, it is unique unlike, in the present embodiment, first eyeglass L1, the 3rd eyeglass L3, the 4th eyeglass L4,
The material of the 5th eyeglass L5 is glass, and its thing side and image side surface are sphere, the 4th eyeglass L4 and the 5th eyeglass L5
Be a glass cemented doublet, its image quality may insure using glass cemented doublet and aberration can be effectively corrected, and this
Two eyeglass L2, the material of the 6th eyeglass L6 are plastic cement, and its thing side is aspherical with image side surface.
The detailed numerical value of the present embodiment is as shown in Table 5：
Table five
And the overall effective focal length of the wide-angle lens is 1.241mm, f-number Fno is 1.8, and field range FOV is 200 °.
In the present embodiment, relationship below is met：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05
Wherein, the focal length of the 4th eyeglass L4 is f4, and the focal length of the 5th eyeglass L5 is f5, the focal length of the 6th eyeglass L6
It is f6, in the present embodiment, (f4+f5)/f6=-0.35 therefore, it can effective update the system aberration.
The present embodiment also meets following relationship：
0.2<N5-N4<0.3
And the refractive index of the 4th eyeglass L4 is N4, the refractive index of the 5th eyeglass L5 is N5, in the present embodiment, N5-
N4=0.24, therefore the present embodiment can effective update the system aberration.
Additionally, the present embodiment also meets following relationship：
8≦TTL/f≦17
The system length of the wide-angle lens is TTL, and the overall effective focal length of the wide-angle lens is f, in the present embodiment,
TTL/f=16.12, therefore the present embodiment can reach the effect of system compact.
Finally, the present embodiment meets relationship below：
-10≦(f2+f3)/(f4+f5)≦0
The focal length of second eyeglass L2 is f2, and the focal length of the 3rd eyeglass L3 is f3, and the focal length of the 4th eyeglass L4 is f4,
The focal length of the 5th eyeglass L5 is f5, in the present embodiment, (f2+f3)/(f4+f5)=- 2.11, and by meeting this relational expression,
May insure that turnover of the light before aperture S is smaller, to reduce system sensitivity.
Continuous collocation is referred to shown in Fig. 8, Fig. 9 A~Fig. 9 C, respectively the chromaticity difference diagram and transverse direction of the utility model 3rd embodiment
Light fan figure, in Fig. 8, the wavelength of line segment A is 0.46 μm, and the wavelength of line segment B is 0.54 μm, and the wavelength of line segment C is 0.64 μm, and
On the basis of 0.54 μm of wavelength, its aberration is between -3.5 μm to 4 μm；Fig. 9 A~Fig. 9 C are then transverse direction at different temperatures
Light fan figure, its Y-axis scope is between -20 microns (μm) between 20 microns (μm), it can be seen that by 20 DEG C of normal temperature to -40 DEG C of low temperature,
Or during 85 DEG C of high temperature, its aberration changes all within 10 μm, therefore, the aberration and aberration of the present embodiment can be repaiied effectively
Just, there is preferably image quality, and by making the setting of the glass cemented doublet, therefore in -40 DEG C to 85 DEG C of harsh ring
Under border, its image quality is still can ensure that.
Further, since second eyeglass L2, the 6th eyeglass L6's is plastic cement, and thing side be with image side surface it is aspherical,
Therefore following aspherical equation formula can be met：
Wherein, c=1/r, r are surface curvature radius, and h is height of the light on this surface, and k is conical surface coefficient, and A is second
Level number, B is fourth order coefficient, and C is the 6th level number, and D is the 8th level number, and E is the tenth level number, and F is the 12nd level
Number, G is the tenth quadravalence coefficient, and H is the 16th level number.
And each aspherical parameter of second eyeglass L2 in the present embodiment, the 6th eyeglass L6 is as shown in Table 6：
Table six
And first embodiment to 3rd embodiment more can extrapolate following numerical value as shown in Table 7 in the present embodiment：
Table seven
On the symbol in upper table, below make one and be described collectively, f is the system focal length value of the wide-angle lens, R1 for this
The radius of curvature of one eyeglass L1 things side, R2 is the radius of curvature of the first eyeglass L1 image side surfaces, and R3 is the second eyeglass L2 things
The radius of curvature of side, R4 is the radius of curvature of the second eyeglass L2 image side surfaces, and R5 is the curvature of the 3rd eyeglass L3 things side
Radius, R6 is the radius of curvature of the 3rd eyeglass L3 image side surfaces, and R7 is the radius of curvature of the 4th eyeglass L4 things side, and R8 is should
The radius of curvature of the 4th eyeglass L4 image side surfaces, R9 is the radius of curvature of the 5th eyeglass L5 things side, and R10 is the 5th eyeglass L5
The radius of curvature of image side surface, R11 is the radius of curvature of the 6th eyeglass L6 things side, and R12 is the 6th eyeglass L6 image side surfaces
Radius of curvature, f1 is the focal length of first eyeglass L1, and f2 is the focal length of second eyeglass L2, and f3 is Jiao of the 3rd eyeglass L3
Away from f4 is the focal length of the 4th eyeglass L4, and f5 is the focal length of the 5th eyeglass L5, and f6 is the focal length of the 6th eyeglass L6, and ATL is
The Integrated lenses thickness of the wide-angle lens, Gaa is the optical axis gap lengths of the wide-angle lens.
In sum, the utility model has the characteristics that：
By meeting relational expression：- 0.5 ＜ (f4+f5)/f6 ＜ -0.05, can effective update the system aberration.
By meeting relational expression：0.2<N5-N4<0.3, can effective update the system aberration.
By meeting relational expression：8≤TTL/f≤17, can reach the effect of system compact.
By meeting relational expression：- 10≤(f2+f3)/(f4+f5)≤0, it can be ensured that turnover of the light before aperture compared with
It is small, to reduce system sensitivity.
Configured by appropriate refractive power, the image of high-quality can be produced.
4th eyeglass and the 5th eyeglass are formed into glass cemented doublet, it can be ensured that its image quality, not only eliminated
The effect of aberration more preferably, more can still possess good image quality under -40 DEG C to 85 DEG C of environment temperature.
Certainly, the utility model can also have other various embodiments, spiritual and its essence without departing substantially from the utility model
In the case of, those of ordinary skill in the art work as can make various corresponding changes and deformation, but these according to the utility model
Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.
Claims (16)
1. a kind of wide-angle lens, it is characterised in that be sequentially by thing side to image side：
One first eyeglass with negative refractive power, its thing side is convex surface, and image side surface is concave surface；
One second eyeglass with negative refractive power, its thing side is convex surface, and image side surface is concave surface；
One the 3rd eyeglass with positive refractive power, its thing side is convex surface with image side surface；
One aperture；
One the 4th eyeglass with positive refractive power, its thing side is convex surface with image side surface；
One the 5th eyeglass with negative refractive power, its thing side is concave surface, and image side surface is convex surface；And
One the 6th eyeglass with positive refractive power, its thing side is convex surface with image side surface；
Wherein, the focal length of the 4th eyeglass is f4, and the focal length of the 5th eyeglass is f5, and the focal length of the 6th eyeglass is f6, fuller
Sufficient relationship below：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05.
2. a kind of wide-angle lens, it is characterised in that be sequentially by thing side to image side：
One first eyeglass with negative refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is for just；
One second eyeglass with negative refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is for just；
One the 3rd eyeglass with positive refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is for just；
One aperture；
One the 4th eyeglass with positive refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is for just；
One the 5th eyeglass with negative refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is negative；And
One the 6th eyeglass with positive refractive power, its thing flank radius is more than image side curvature radius, and thing side curvature
Radius distance value is for just；
Wherein, the focal length of the 4th eyeglass is f4, and the focal length of the 5th eyeglass is f5, and the focal length of the 6th eyeglass is f6, fuller
Sufficient relationship below：
- 0.5 ＜ (f4+f5)/f6 ＜ -0.05.
3. wide-angle lens according to claim 1 and 2, it is characterised in that the refractive index of the 4th eyeglass is N4, the 5th
The refractive index of eyeglass is N5, more meets relationship below：
0.2<N5-N4<0.3。
4. wide-angle lens according to claim 1 and 2, it is characterised in that the system length of the wide-angle lens is TTL, should
The overall effective focal length of wide-angle lens is f, more meets relationship below：
8≦TTL/f≦17。
5. wide-angle lens according to claim 1 and 2, it is characterised in that the focal length of second eyeglass is f2, the 3rd mirror
The focal length of piece is f3, and the focal length of the 4th eyeglass is f4, and the focal length of the 5th eyeglass is f5, more meets relationship below：
-10≦(f2+f3)/(f4+f5)≦0。
6. wide-angle lens according to claim 1 and 2, it is characterised in that the 4th eyeglass is a glass with the 5th eyeglass
Glass cemented doublet.
7. wide-angle lens according to claim 2, it is characterised in that the thing side of the 3rd eyeglass is convex surface.
8. wide-angle lens according to claim 2, it is characterised in that the image side surface of the 4th eyeglass is convex surface.
9. wide-angle lens according to claim 2, it is characterised in that the image side surface of the 6th eyeglass is convex surface.
10. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of first eyeglass
It is R1, the radius of curvature of the image side surface of first eyeglass is R2, the focal length of first eyeglass is f1, the wide-angle lens is integrated with
Effect focal length is f, and meets following relationship：
10≦R1/f≦17
2≦R2/f≦4
-0.4≦f/f1≦-0.1。
11. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of second eyeglass
It is R3, the radius of curvature of the image side surface of second eyeglass is R4, the focal length of second eyeglass is f2, the wide-angle lens is integrated with
Effect focal length is f, and meets following relationship：
1≦R3/f≦12
0≦R4/f≦2
-0.5≦f/f2≦-0.2。
12. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of the 3rd eyeglass
It is R5, the radius of curvature of the image side surface of the 3rd eyeglass is R6, the focal length of the 3rd eyeglass is f3, the wide-angle lens is integrated with
Effect focal length is f, and meets following relationship：
3≦R5/f≦82
-11≦R6/f≦-4
0.1≦f/f3≦0.3。
13. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of the 4th eyeglass
It is R7, the radius of curvature of the image side surface of the 4th eyeglass is R8, the focal length of the 4th eyeglass is f4, the wide-angle lens is integrated with
Effect focal length is f, and meets following relationship：
2≦R7/f≦9
-3≦R8/f≦-1
0.4≦f/f4≦0.7。
14. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of the 5th eyeglass
It is R9, the radius of curvature of the image side surface of the 5th eyeglass is R10, and the focal length of the 5th eyeglass is f5, the entirety of the wide-angle lens
Effective focal length is f, and meets following relationship：
-3≦R9/f≦-1
-11≦R10/f≦-5
-0.6≦f/f5≦-0.2。
15. wide-angle lens according to claim 1 and 2, it is characterised in that the radius of curvature of the thing side of the 6th eyeglass
It is R11, the radius of curvature of the image side surface of the 6th eyeglass is R12, and the focal length of the 6th eyeglass is f6, the entirety of the wide-angle lens
Effective focal length is f, and meets following relationship：
2≦R11/f≦10
-7≦R12/f≦-3
0.1≦f/f6≦0.4。
16. wide-angle lens according to claim 1 and 2, it is characterised in that the Integrated lenses thickness of the wide-angle lens is
ATL, the optical axis gap lengths of the wide-angle lens are Gaa, more meet relationship below：
1.3≦ATL/Gaa≦1.6。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248142.0U CN206224040U (en) | 2016-11-15 | 2016-11-15 | Wide-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248142.0U CN206224040U (en) | 2016-11-15 | 2016-11-15 | Wide-angle lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206224040U true CN206224040U (en) | 2017-06-06 |
Family
ID=58790108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621248142.0U Expired - Fee Related CN206224040U (en) | 2016-11-15 | 2016-11-15 | Wide-angle lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206224040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646928A (en) * | 2018-06-27 | 2020-01-03 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111367057A (en) * | 2020-04-30 | 2020-07-03 | 天津欧菲光电有限公司 | Optical system, camera module, electronic equipment and automobile |
| TWI816248B (en) * | 2021-10-20 | 2023-09-21 | 大立光電股份有限公司 | Imaging system lens assembly, imaging apparatus and electronic device |
-
2016
- 2016-11-15 CN CN201621248142.0U patent/CN206224040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646928A (en) * | 2018-06-27 | 2020-01-03 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110646928B (en) * | 2018-06-27 | 2022-01-21 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111367057A (en) * | 2020-04-30 | 2020-07-03 | 天津欧菲光电有限公司 | Optical system, camera module, electronic equipment and automobile |
| TWI816248B (en) * | 2021-10-20 | 2023-09-21 | 大立光電股份有限公司 | Imaging system lens assembly, imaging apparatus and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106199921B (en) | Wide-angle lens | |
| CN106802469B (en) | Camera optical camera lens | |
| CN104007535B (en) | A kind of novel bugeye lens | |
| TW201802518A (en) | Optical lens | |
| US10416420B2 (en) | Optical lens | |
| JP6797256B1 (en) | Imaging lens | |
| JP6797255B1 (en) | Imaging lens | |
| TWI480577B (en) | Wide-angle lens | |
| CN106199926B (en) | Optical lens | |
| CN104199176B (en) | A kind of ultra-large vision field camera lens for monitoring system | |
| CN106814442A (en) | Optical lens | |
| CN107678147B (en) | A kind of lens system, fish eye lens and image collecting device | |
| CN105487204B (en) | Pick-up lens | |
| CN206224040U (en) | Wide-angle lens | |
| CN105242376A (en) | Imaging lens unit with temperature compensation function | |
| CN109991716A (en) | Camera lens and its manufacturing method | |
| CN107085283A (en) | A kind of glass modeling mixing 6.0mm tight shots of the low distortion of ultra high-definition | |
| TWM537661U (en) | Wide-angle lens | |
| CN106324809A (en) | High-definition small-distortion oversized-field surveillance camera | |
| CN205539670U (en) | A tight shot for projecting apparatus | |
| CN210626760U (en) | Lens | |
| CN109425955A (en) | Optical imaging lens | |
| CN204731479U (en) | The camera lens of a kind of miniaturization high-pixel camera optical system and application thereof | |
| CN208421383U (en) | The high pixel fish eye optical systems of ultra-wide angle and its camera module of application | |
| CN206920689U (en) | High pixel ultra-wide angle optical system and its camera module of application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |