CN101324695A - Thin type photographing lens set - Google Patents
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- CN101324695A CN101324695A CNA2007101264736A CN200710126473A CN101324695A CN 101324695 A CN101324695 A CN 101324695A CN A2007101264736 A CNA2007101264736 A CN A2007101264736A CN 200710126473 A CN200710126473 A CN 200710126473A CN 101324695 A CN101324695 A CN 101324695A
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Abstract
The invention discloses a thin camera lens group which is composed of two lenses with folding force; a first lens with the positive folding force is firstly arranged from the object side to the image side, the front surface thereof is a convex surface, the back surface is a concave surface, the front surface and the back surface are non-spherical surfaces; a second lens with the negative folding force is additionally arranged, the front surface and the back surface are both concave surfaces and non-spherical surfaces, inflection points are arranged on the back surface thereof; wherein, an iris of the thin camera lens group is arranged in front of the first lens for controlling the brightness of the thin camera lens group; the focus of the second lens in the thin camera lens group is f2, the focus of the whole thin camera lens group is f, the diameter of an entrance pupil opening is EPD which meets the following relation formula: f/f2 is more than minus 0.55 and less than minus 0.05, and f/EPD is more than minus 0.05 and less than 3.6; the size of the lens group can be effectively reduced with the help of the structure, the arrangement mode and the configuration, thereby simultaneously obtaining the higher resolving power.
Description
Technical field
The present invention relates to a kind of lens combination, relate in particular to a kind of thin type photographing lens combination.
Background technology
Recent years, rise along with camera cell phone, the length of phtographic lens is dwindled gradually, and the photosensory assembly of general digital camera is nothing more than being two kinds of CMOS or CCD, because manufacture of semiconductor development of technology, the picture element size of photosensory assembly is reduced to present 1.75um by early stage 7.4um, and this makes that the demand of thin type photographing lens combination is more ardent.
The mobile lens of prior art, for considering the revisal of aberration, three pieces of formula lens arrangements of many employings, wherein the most general is positive and negative positive Triplet pattern, still, and when the length of camera lens is contracted to 3mm when following by 5mm, the optical system volume-diminished, make desire that three pieces of lens are inserted this space difficulty that becomes, and lens thickness also must dwindle, and makes that the uniformity coefficient of its material of lens made from the plastics ejection formation is bad.
Summary of the invention
The technical problem to be solved in the present invention provides a kind ofly can effectively dwindle mirror group volume, more can obtain the thin type photographing lens combination of higher resolving power simultaneously.
For solving the problems of the technologies described above, the invention provides a kind of imaging lens system group that cooperates aperture to constitute by two pieces of lens, comprising:
One thin type photographing lens combination is made of the lens of two tool refracting powers, by the thing side to being in regular turn as side:
First lens of the positive refracting power of tool, its front surface are convex surface, and the rear surface is a concave surface, and its front surface, rear surface are all aspheric surface;
Second lens of the negative refracting power of tool, its front surface, rear surface are all concave surface, and its front surface, rear surface are all aspheric surface, and its rear surface is provided with the point of inflexion;
Wherein, the aperture of this thin type photographing lens combination is arranged at before these first lens, is used to control the brightness of thin type photographing lens combination.
In thin type photographing lens combination of the present invention, the refracting power of system is mainly provided by first lens with positive refracting power, has the effect of second lens of negative refracting power, and as the revisal lens, its function is balance and every aberration that update the system produced.
In thin type photographing lens combination of the present invention, have first lens of positive refracting power, its front surface is a convex surface, the rear surface is a concave surface, has second lens of negative refracting power, and its front surface, rear surface are all concave surface, because above configuration can effectively improve image quality.
Provide powerful positive refracting power by first lens, and aperture is placed the object side of thin type photographing lens combination, to make the outgoing pupil (Exit Pupil) of thin type photographing lens combination away from imaging surface, therefore, light will be incident in the mode near vertical incidence on the photosensory assembly, be the Telecentric characteristic of picture side, this characteristic is very important for the photoperceptivity of current solid-state photosensory assembly, with making the sensitization susceptibility of photosensory assembly improve, reduce the thin type photographing lens combination and can produce the possibility at dark angle.And be provided with the point of inflexion in the second lens rear surface, be incident in angle on the photosensory assembly with more effectively suppressing light from the axle visual field.
In thin type photographing lens combination of the present invention, the material of lens can be glass or plastics, but owing on the minute surface aspheric surface is set, aspheric surface can be made into the shape beyond the sphere easily, obtain more control variable, in order to subduing aberration, and then the number that uses of reduction lens, therefore can effectively reduce the total length of thin type photographing lens combination.
In thin type photographing lens combination of the present invention, the focal length of first lens is f1, and the focal length of whole thin type photographing lens combination is f, and both satisfy note relational expression down:
0.8＜f/f1＜1.5；
If f/f1 is less than limit value under the above-mentioned relation formula, then the refracting power deficiency of thin type photographing lens combination makes that the optics total length is long, and comparatively difficult for the angle on the compacting light incident photosensory assembly.If f/f1 is greater than limit value on the above-mentioned relation formula, then the higher order aberratons of system is with excessive.Furthermore, it is then comparatively desirable to make f/f1 satisfy following relation:
1.0＜f/f1＜1.2。
In thin type photographing lens combination of the present invention, the focal length of second lens is f2, and the focal length of whole thin type photographing lens combination is f, and both satisfy note relational expression down:
-0.55＜f/f2＜-0.05；
If f/f2 is less than limit value under the above-mentioned relation formula, then the total length of thin type photographing lens combination is long, and the target of this and the miniaturization of thin type photographing lens combination is disagreed.If f/f2 is greater than limit value on the above-mentioned relation formula, then the aberration of thin type photographing lens combination will be difficult to revise.Furthermore, note concerns then comparatively desirable to make f/f2 satisfy down:
-0.35＜f/f2＜-0.05；
Further, note concerns then comparatively desirable to make f/f2 satisfy down:
-0.3＜f/f2＜-0.2。
In thin type photographing lens combination of the present invention, the focal length of whole thin type photographing lens combination is f, and entrance pupil (Entrance Pupil) opening diameter is EPD, satisfies note relational expression down:
f/EPD＜3.6；
Aforementioned relation can effectively strengthen the brightness of thin type photographing lens combination, and the reaction time when accelerating system's capture.
In thin type photographing lens combination of the present invention, the front surface radius-of-curvature of first lens is R1, and the rear surface radius-of-curvature of first lens is R2, and both satisfy note relation down:
0.4＜R1/R2＜0.7；
When R1/R2 is lower than limit value under the above-mentioned relation formula, the astigmatism (Astigmatism) that the thin type photographing lens combination produces will be difficult to revise, on the other hand, when R1/R2 is higher than limit value on the above-mentioned relation formula, comparatively difficult for the correction of the spherical aberration in the thin type photographing lens combination (Spherical Aberration).
In thin type photographing lens combination of the present invention, the front surface radius-of-curvature of second lens is R3, and the rear surface radius-of-curvature of second lens is R4, and both satisfy following relation:
-2.5＜R3/R4＜-0.1；
Be lower than the lower limit of above-mentioned relation formula as R3/R4, it is less relatively that the curvature of the second lens front surface becomes, the aberration that the thin type photographing lens combination produces will be difficult to revise, on the other hand, on R3/R4 is higher than the above-mentioned relation formula during limit value, the curvature of the second lens front surface becomes relatively large, and the optics total length of thin type photographing lens combination is with long.If make R3/R4 satisfy note relation down, then comparatively desirable:
-0.5＜R3/R4＜-0.1。
In the thin type photographing lens combination, first lens of the positive refracting power of tool, its refractive index is N1, satisfies following relation:
1.53＜N1＜1.56；
Above-mentioned relation can make the thin type photographing lens combination obtain the good optical quality.
In thin type photographing lens combination of the present invention, the abbe number of first lens (Abbe Number) is V1, and the abbe number of second lens (Abbe Number) is V2, and both satisfy following relation:
|V1-V2|＜10；
Aforementioned relation is the astigmatism and the coma (Coma) of update the system generation effectively, improves the resolving power of thin type photographing lens combination.If desire further the aberration of update the system (ChromaticAberration) then V2 must satisfy following relation:
V2＜32。
In thin type photographing lens combination of the present invention, the center thickness of second lens is CT2, satisfies following relation:
CT2＜1.8[mm]；
Above-mentioned relation helps reducing the total length of thin type photographing lens combination.
In thin type photographing lens combination of the present invention, the mirror spacing of first lens and these second lens is T12, satisfies following relational expression:
0.2＜T12/f＜0.32；
Above-mentioned relation helps revising the higher order aberratons of thin type photographing lens combination, can keep the characteristic of thin type photographing lens combination miniaturization simultaneously.
In thin type photographing lens combination of the present invention, the mirror angle of effective diameter position, the second lens rear surface is ANG22, satisfies note relational expression down:
ANG22＜-50[deg]；
The direction of its mirror angle is defined as: when the mirror angle of peripheral effective diameter position to tiltedly just then be defined as inclination, mirror angle when peripheral effective diameter position tiltedly then is defined as negative to the thing inclination.
Aforementioned relation can effectively be dwindled the angle of light incident photosensory assembly, and can strengthen the ability of thin type photographing lens combination correction off-axis aberration.
In thin type photographing lens combination of the present invention, the object of this thin type photographing lens combination images in the sense electronics optical assembly, and the optics total length of thin type photographing lens combination is TL, and the imaging of thin type photographing lens combination highly is ImgH, satisfies note relation down:
TL/ImgH＜1.9；
Above-mentioned relation can be kept the characteristic of thin type photographing lens combination miniaturization.
Thin type photographing lens combination of the present invention, lens arrangement and arrangement mode can effectively dwindle mirror group volume, more can obtain higher resolving power simultaneously.
Description of drawings
Fig. 1 is embodiment 1 an optical system synoptic diagram;
Fig. 2 is the aberration curve figure of embodiment 1;
Fig. 3 is embodiment 2 optical system synoptic diagram;
Fig. 4 is the aberration curve figure of embodiment 2;
Fig. 5 is embodiment 3 optical system synoptic diagram;
Fig. 6 is the aberration curve figure of embodiment 3.
Wherein, first lens are 10; Front surface is 11; The rear surface is 12; Second lens are 20; Front surface is 21; The rear surface is 22; The aperture of thin type photographing lens combination is 30; Infrared ray filtering optical filter is 40; The photosensory assembly cover glass is 50; Imaging surface is 60; First focal length of lens is f1; Second focal length of lens is f2; Whole thin type photographing lens combination focal length is f; The entrance pupil opening diameter is EPD; The first lens front surface radius-of-curvature is R1; The first lens rear surface radius-of-curvature is R2; The second lens front surface radius-of-curvature is R3; The second lens rear surface radius-of-curvature is R4; First index of refraction in lens is N1; The first lens abbe number is V1; The second lens abbe number is V2; The center thickness of second lens is CT2; Mirror spacing between first lens and second lens is T12; The mirror angle of effective diameter position, the second lens rear surface is ANG22; The optics total length of whole thin type photographing lens combination is TL; The imaging of whole thin type photographing lens combination highly is ImgH.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
The embodiment of the invention 1 as shown in Figure 1, the aberration curve of embodiment 1 is as shown in Figure 2.The lens that the thin type photographing lens combination of embodiment 1 is mainly constructed by two pieces of tool refracting powers are constituted, and by the thing side extremely as side are in regular turn:
One aperture 30 is positioned at before first lens 10, is used to control the brightness of thin type photographing lens combination;
Other includes an infrared ray filtering optical filter 40 (IR Filter), places after second lens 20, and it does not influence the focal length of system;
Other includes a photosensory assembly cover glass 50 (Sensor Cover Glass), places after the infrared ray filtering optical filter 40, and it does not influence the focal length of system;
One imaging surface 60 places after the photosensory assembly cover glass 50.
The equation of aforementioned aspheric curve is expressed as follows:
X(Y)＝(Y
2/R)/(1+sqrt(1-(1+k)*(Y/R)
2))+A
4*Y
4+A
6*Y
6+…
Wherein:
X: the cross-sectional distance of lens
Y: the point on the aspheric curve is apart from the height of optical axis
K: conical surface coefficient
A
4, A
6...: 4 rank, 6 rank ... asphericity coefficient.
In the embodiment 1 thin type photographing lens combination, the focal length of first lens is f1, and the focal length of second lens is f2, and the focal length of whole thin type photographing lens combination is f, the entrance pupil opening diameter is EPD, and its pass is: f/f1=1.11, f/f2=-0.24, f/EPD=2.85.
In the embodiment 1 thin type photographing lens combination, the front surface radius-of-curvature of first lens is R1, and the rear surface radius-of-curvature of first lens is R2, and the front surface radius-of-curvature of second lens is R3, the rear surface radius-of-curvature of second lens is R4, and its pass is: R1/R2=0.52, R3/R4=-0.24.
In the embodiment 1 thin type photographing lens combination, the refractive index of first lens is N1, and its pass is: N1=1.543.
In the embodiment 1 thin type photographing lens combination, the abbe number of first lens (Abbe Number) is V1, and the abbe number of second lens is V2, and its pass is: | V1-V2|=0, V2=60.3.
In the embodiment 1 thin type photographing lens combination, the center thickness of second lens is CT2, and the mirror spacing between first lens and second lens is T12, and the focal length of whole thin type photographing lens combination is f, and its pass is: CT2=1.385[mm], T12/f=0.24.
In the embodiment 1 thin type photographing lens combination, the mirror angle of the effective diameter position of the second lens rear surface is ANG22, and its pass is: ANG22=-70.4[deg.].
The direction of mirror angle be defined as " when peripheral effective diameter angle to tiltedly just then being defined as inclination, tiltedly then being defined as negative to the thing inclination when peripheral effective diameter angle ".
In the embodiment 1 thin type photographing lens combination, the optics length overall of thin type photographing lens combination is TL, and the imaging of thin type photographing lens combination highly is ImgH, and its pass is: TL/ImgH=1.81.
The detailed structured data of embodiment 1 is as shown in the table one, and its aspherical surface data is as shown in the table two, and wherein, the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
Table one is the different numerical value change tables of the thin type photographing lens combination embodiment of corresponding embodiment 1 with table two.
Table one
Table two
Embodiment 2
The embodiment of the invention 2 sees also Fig. 3, and the aberration curve of embodiment 2 sees also Fig. 4.The lens that the thin type photographing lens combination of embodiment 2 is mainly constructed by two pieces of tool refracting powers are constituted, and by the thing side extremely as side are in regular turn:
One aperture 30 is positioned at before first lens 10, is used to control the brightness of thin type photographing lens combination;
Other includes an infrared ray filtering optical filter 40 (IR Filter), places after second lens 20, and it does not influence the focal length of system;
Other includes a photosensory assembly cover glass 50 (Sensor Cover Glass), places after the infrared ray filtering optical filter 40, and it does not influence the focal length of system;
One imaging surface 60 places after the photosensory assembly cover glass 50.
The equational expression of embodiment 2 aspheric curve is as the form of embodiment 1.
In the embodiment 2 thin type photographing lens combination, the focal length of first lens is f1, and the focal length of second lens is f2, and the focal length of whole thin type photographing lens combination is f, the entrance pupil opening diameter is EPD, and its pass is: f/f1=1.07, f/f2=-0.21, f/EPD=2.87.
In the embodiment 2 thin type photographing lens combination, the front surface radius-of-curvature of first lens is R1, and the rear surface radius-of-curvature of first lens is R2, and the front surface radius-of-curvature of second lens is R3, the rear surface radius-of-curvature of second lens is R4, and its pass is: R1/R2=0.59, R3/R4=-2.24.
In the embodiment 2 thin type photographing lens combination, the refractive index of first lens is N1, and its pass is: N1=1.543.
In the embodiment 2 thin type photographing lens combination, the abbe number of first lens (Abbe Number) is V1, and the abbe number of second lens is V2, and its pass is: | V1-V2|=0, V2=60.3.
In the embodiment 2 thin type photographing lens combination, the center thickness of second lens is CT2, and the mirror spacing between first lens and second lens is T12, and the focal length of whole thin type photographing lens combination is f, and its pass is: CT2=1.188[mm], T12/f=0.28.
In the embodiment 2 thin type photographing lens combination, the mirror angle of the effective diameter position of the second lens rear surface is ANG22, and its pass is: ANG22=-63.7[deg.].
The direction of mirror angle be defined as " when peripheral effective diameter angle to tiltedly just then being defined as inclination, tiltedly then being defined as negative to the thing inclination when peripheral effective diameter angle ".
In the embodiment 2 thin type photographing lens combination, the optics length overall of thin type photographing lens combination is TL, and the imaging of thin type photographing lens combination highly is ImgH, and its pass is: TL/ImgH=1.82.
The detailed structured data of embodiment 2 is as shown in the table three, and its aspherical surface data is as shown in the table four, and wherein, the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
Table three is the different numerical value change tables of the thin type photographing lens combination embodiment of corresponding embodiment 2 with table four.
Table three
Table four
Embodiment 3
The embodiment of the invention 3 sees also Fig. 5, and the aberration curve of embodiment 3 sees also Fig. 6.The lens that the thin type photographing lens combination of embodiment 3 is mainly constructed by two pieces of tool refracting powers are constituted, and by the thing side extremely as side are in regular turn:
One aperture 30 is positioned at before first lens 10, is used to control the brightness of thin type photographing lens combination;
Other includes an infrared ray filtering optical filter 40 (IR Filter), places after second lens 20, and it does not influence the focal length of system;
Other includes a photosensory assembly cover glass 50 (Sensor Cover Glass), places after the infrared ray filtering optical filter 40, and it does not influence the focal length of system;
One imaging surface 60 places after the photosensory assembly cover glass 50.
The equational expression of embodiment 3 aspheric curve is as the form of embodiment 1.
In the embodiment 3 thin type photographing lens combination, the focal length of first lens is f1, and the focal length of second lens is f2, and the focal length of whole thin type photographing lens combination is f, the entrance pupil opening diameter is EPD, and its pass is: f/f1=1.12, f/f2=-0.28, f/EPD=2.85.
In the embodiment 3 thin type photographing lens combination, the front surface radius-of-curvature of first lens is R1, and the rear surface radius-of-curvature of first lens is R2, and the front surface radius-of-curvature of second lens is R3, the rear surface radius-of-curvature of second lens is R4, and its pass is: R1/R2=0.51, R3/R4=-0.37.
In the embodiment 3 thin type photographing lens combination, the refractive index of first lens is N1, and its pass is: N1=1.543.
In the embodiment 3 thin type photographing lens combination, the abbe number of first lens (Abbe Number) is V1, and the abbe number of second lens is V2, and its pass is: | V1-V2|=30.1, V2=30.2.
In the embodiment 3 thin type photographing lens combination, the center thickness of second lens is CT2, and the mirror spacing between first lens and second lens is T12, and the focal length of whole thin type photographing lens combination is f, and its pass is: CT2=1.348[mm], T12/f=0.25.
In the embodiment 3 thin type photographing lens combination, the mirror angle of the effective diameter position of the second lens rear surface is ANG22, and its pass is: ANG22=-69.1[deg.].
The direction of mirror angle be defined as " when peripheral effective diameter angle to tiltedly just then being defined as inclination, tiltedly then being defined as negative to the thing inclination when peripheral effective diameter angle ".
In the embodiment 3 thin type photographing lens combination, the optics length overall of thin type photographing lens combination is TL, and the imaging of thin type photographing lens combination highly is ImgH, and its pass is: TL/ImgH=1.81.
The detailed structured data of embodiment 3 is as shown in the table five, and its aspherical surface data is as shown in the table six, and wherein, the unit of radius-of-curvature, thickness and focal length is mm, and HFOV is defined as half of maximum visual angle.
Table five is the different numerical value change tables of the thin type photographing lens combination embodiment of corresponding embodiment 3 with table six.
Table five
Table six
Table one to table six is depicted as the different numerical value change tables of thin type photographing lens combination embodiment, and the numerical value change of each embodiment of the present invention is all true tests gained, even use different numerical value, the product of same structure must belong to protection category of the present invention.Table seven is the numerical data of the corresponding correlate equation of the present invention of each embodiment.
Table seven
Claims (17)
1, a kind of thin type photographing lens combination is characterized in that: comprise the lens and an aperture of two tool refracting powers, extremely look like side by the thing side, be in regular turn:
First lens of the positive refracting power of tool, its front surface are convex surface, and the rear surface is a concave surface, and its front surface, rear surface are all aspheric surface;
Second lens of the negative refracting power of tool, its front surface, rear surface are all concave surface, and its front surface, rear surface are all aspheric surface, and its rear surface is provided with the point of inflexion; And one aperture be arranged at before described first lens;
The focal length of described second lens is f2, and the focal length of whole thin type photographing lens combination is f, and the entrance pupil opening diameter is EPD, satisfies the following relationship formula:
-0.55＜f/f2＜-0.05
f/EPD＜3.6。
2, thin type photographing lens combination as claimed in claim 1 is characterized in that: the material of described first lens is plastics.
3, thin type photographing lens combination as claimed in claim 1 or 2 is characterized in that: the material of described second lens is plastics.
4, thin type photographing lens combination as claimed in claim 3 is characterized in that: the focal length of described first lens is f1, and the focal length of whole thin type photographing lens combination is f, and both satisfy the following relationship formula:
0.8＜f/f1＜1.5。
5, thin type photographing lens combination as claimed in claim 4 is characterized in that: the focal length of described first lens is f1, and the focal length of whole thin type photographing lens combination is f, and both satisfy the following relationship formula:
1.0＜f/f1＜1.2。
6, thin type photographing lens combination as claimed in claim 3 is characterized in that: the focal length of described second lens is f2, and the focal length of whole thin type photographing lens combination is f, and both satisfy the following relationship formula:
-0.35＜f/f2＜-0.05。
7, thin type photographing lens combination as claimed in claim 6 is characterized in that: the focal length of second lens is f2, and the focal length of whole thin type photographing lens combination is f, and both satisfy the following relationship formula:
-0.3＜f/f2＜-0.2。
8, thin type photographing lens combination as claimed in claim 3 is characterized in that: the front surface radius-of-curvature of described first lens is R1, and the rear surface radius-of-curvature of first lens is R2, and both satisfy the following relationship formula:
0.4＜R1/R2＜0.7。
9, thin type photographing lens combination as claimed in claim 8 is characterized in that: the front surface radius-of-curvature of described second lens is R3, and the rear surface radius-of-curvature of second lens is R4, and both satisfy the following relationship formula:
-2.5＜R3/R4＜-0.1。
10, thin type photographing lens combination as claimed in claim 9 is characterized in that: the front surface radius-of-curvature of described second lens is R3, and the rear surface radius-of-curvature of second lens is R4, and both satisfy the following relationship formula:
-0.5＜R3/R4＜-0.1。
11, thin type photographing lens combination as claimed in claim 2, it is characterized in that: the refractive index of described first lens is N1, satisfies the following relationship formula:
1.53＜N1＜1.56。
12, thin type photographing lens combination as claimed in claim 3 is characterized in that: the abbe number of described first lens is V1, and the abbe number of described second lens is V2, satisfies the following relationship formula:
|V1-V2|＜10。
13, thin type photographing lens combination as claimed in claim 3, it is characterized in that: the abbe number of described second lens is V2, satisfies the following relationship formula:
V2＜32。
14, thin type photographing lens combination as claimed in claim 6, it is characterized in that: the center thickness of described second lens is CT2, satisfies the following relationship formula:
CT2＜1.8mm。
15, thin type photographing lens combination as claimed in claim 1 is characterized in that: the mirror spacing between described first lens and described second lens is T12, and the focal length of whole thin type photographing lens combination is f, and both satisfy the following relationship formula:
0.2＜T12/f＜0.32。
16, thin type photographing lens combination as claimed in claim 1 is characterized in that: the mirror angle of the effective diameter position of the described second lens rear surface is ANG22, satisfies the following relationship formula:
ANG22＜-50deg.。
17, thin type photographing lens combination as claimed in claim 1, it is characterized in that: the object of described thin type photographing lens combination images in the sense electronics optical assembly, and the optics length overall of thin type photographing lens combination is TL, the imaging of thin type photographing lens combination highly is ImgH, and both satisfy following relationship formula: TL/ImgH＜1.9.
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|---|---|---|---|---|
| CN102122056B (en) * | 2010-01-07 | 2012-07-25 | 大立光电股份有限公司 | Imaging optical lens |
| TWI418840B (en) * | 2010-01-25 | 2013-12-11 | Largan Precision Co Ltd | Compact imaging lens assembly |
| CN102236154A (en) * | 2010-05-05 | 2011-11-09 | 大立光电股份有限公司 | Thinned imaging lens group |
| CN102236154B (en) * | 2010-05-05 | 2013-03-13 | 大立光电股份有限公司 | Thinned imaging lens group |
| CN102736216A (en) * | 2011-04-05 | 2012-10-17 | 夏普株式会社 | Image pickup lens and image pickup module |
| CN103323931A (en) * | 2012-03-20 | 2013-09-25 | 大立光电股份有限公司 | Optical lens assembly |
| US9019631B2 (en) | 2012-03-20 | 2015-04-28 | Largan Precision Co., Ltd. | Optical lens assembly |
| CN103323931B (en) * | 2012-03-20 | 2015-07-15 | 大立光电股份有限公司 | Optical lens assembly |
| US11009680B2 (en) | 2017-04-24 | 2021-05-18 | Zhejiang Sunny Optical Co., Ltd | Iris lens assembly |
| CN115996284A (en) * | 2023-03-23 | 2023-04-21 | 北京深光科技有限公司 | LCOS projection optical machine with high contrast and no thermal defocus |
| CN115996284B (en) * | 2023-03-23 | 2023-06-13 | 北京深光科技有限公司 | LCOS projection optical machine with high contrast and no thermal defocus |
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| CN100587540C (en) | 2010-02-03 |
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