CN104142565B - Near-infrared interactive projection camera lens - Google Patents
Near-infrared interactive projection camera lens Download PDFInfo
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- CN104142565B CN104142565B CN201410349750.XA CN201410349750A CN104142565B CN 104142565 B CN104142565 B CN 104142565B CN 201410349750 A CN201410349750 A CN 201410349750A CN 104142565 B CN104142565 B CN 104142565B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
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Abstract
The present invention provides a kind of near-infrared interactive projection camera lens, sequentially includes from becoming image side to image source side: the first lens of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface；Make the reflection optical surface of light curved way；Second lens of tool positive light coke, its image source side is convex surface；Having the 3rd lens of positive light coke, it becomes image side to be convex surface, and image source side is concave surface；There are the 4th lens of positive light coke；Described camera lens meets following relationship: 0.25 < ImgH/D < 0.55, and wherein, ImgH is the half of image source diameter diagonal line length；D is the first lens imaging side vertical height to the central optical axis being perpendicular to image source.Present invention employs four lens, there is the characteristics such as larger field angle, large aperture, miniaturization, simultaneously, mixing mutually by glass and plastics, different focal powers and the reasonable distribution of radius of curvature, reduce camera lens cost, effectively eliminated the heat differential impact on system, reached the characteristic of image space telecentricity.
Description
Technical field
The present invention relates to a kind of optical projection system being made up of four lens, especially relate to a kind of projection lens that can be applicable to near-infrared interactive system.
Background technology
In recent years, along with the continuous progress of science and technology, driving the progressively rise of interactive device, the range of application of projection lens is also more and more wider.In order to suitable in miniaturized electronic devices and interactively demand, projection lens needs, while ensureing miniaturization, have enough angles of visual field, to obtain bigger picture in narrow occasion, and ensures the acquisition of good image quality and information.Traditional projection lens is generally used for imaging, by adopting more eyeglass to eliminate various aberration to improve resolution, but projection lens total length can be made elongated, be unfavorable for miniaturization；And general big angle of visual field projection lens, distortion all can be relatively big, and image quality is poor.Such as the patent of invention that the patent No. is " CN102879888A ", this projection lens sequentially has seven eyeglasses and a total reflection prism, the eyeglass number of this camera lens and prism location, determine this Lens cannot reduce further, although there being good image quality, but this structure cannot ensure the telecentricity characteristic of lens combination so that light is uneven consequently, it is possible to there is shade.
Interactive device relies primarily on and produces signal through camera lens projection, catching image then through imaging lens, by image processing software, information being extracted further, thus realizing the interactive function such as multi-point touch, gesture identification.Therefore, the precision of information retrieval is had conclusive effect by the signal quality of projection lens simulation.Infrared band is because of the characteristic of himself, it is possible to the impact of elimination visible ray, it is easier to realize the extraction of information.
Therefore, the present invention proposes a kind of projection lens being applied near infrared band, has the characteristic of the big angle of visual field, large aperture and miniaturization, and effectively eliminates the heat differential impact on lens system, reaches the effect of image space telecentricity simultaneously.
Summary of the invention
In view of the above problems, the invention provides a kind of near-infrared interactive projection camera lens with the big angle of visual field, large aperture, miniaturization, by the design adopting glass and plastics mixing to use, conservative control to overall structure and each lens shape, reduce production cost, effectively eliminate the heat differential impact on camera lens, reach the effect of image space telecentricity.
A kind of near-infrared interactive projection camera lens, sequentially includes from becoming image side to image source side:
First lens of tool negative power, it becomes image side to be convex surface, and image source side is concave surface；
Make the reflection optical surface of light curved way；
Second lens of tool positive light coke, its image source side is convex surface；
3rd lens of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface；
4th lens of tool positive light coke；
In near-infrared interactive projection camera lens provided by the invention, a diaphragm it is provided with between first lens and the second lens, and second lens and the 4th lens be made up of glass, the method inserting glass lens in this plastic lens, coordinate appropriate structural design again, the heat differential impact on this camera lens can be effectively eliminated.
In near-infrared interactive projection camera lens provided by the invention, ImgH is the half of image source diameter diagonal line length；D is the first lens imaging side vertical height to the central optical axis being perpendicular to image source, will meet following relationship:
0.25<ImgH/D<0.55
Meeting relation above formula can allow the present invention realize the characteristic of miniaturization, in order to be applied on portable product.
In near-infrared interactive projection camera lens provided by the invention, f1 is the focal length of the first lens, and f is the whole focal length of lens system, meets following relationship:
-3<f1/f<-1
First lens meet above formula requirement, it is ensured that the Radix Rumicis feature of the present invention.
In near-infrared interactive projection camera lens provided by the invention, f2 is the focal length of the second lens, and f is the whole focal length of lens system, meets following relationship:
2<f2/f<4
Second lens are glass lens, in addition above formula requirement, it is possible to well eliminate the heat differential impact on this lens system, it is thus achieved that more reliable, stable image quality.
In near-infrared interactive projection camera lens provided by the invention, f4 is the focal length of the 4th lens, and f is the whole focal length of described lens system, the radius of curvature of R5, R6 respectively the 3rd lens imaging side and image source side, will meet following relationship:
3<f4/f<12
-22<(R5+R6)/(R5-R6)<-5
3rd lens and the 4th lens meet requirements above, it is possible to realize the image space telecentricity characteristic of the present invention, allow light keep uniformly, without dark angle, and revising distortion preferably.
Preferably, described second lens imaging side is convex surface.
Preferably, described 4th lens imaging side is convex surface, and image source side is convex surface.
Preferably, the reflection optical surface making light curved way described in can be reflecting prism, it is also possible to be plane of reflection mirror.
Present invention employs four lens, achieve the technique effect of the big angle of visual field, large aperture, miniaturization, combining and the distribution of different focal powers and radius of curvature by plastic and glass, reduce production cost, eliminate the heat differential impact on system, reach the characteristic of image space telecentricity simultaneously.
Accompanying drawing explanation
Fig. 1 is the primary structure schematic diagram of the embodiment 1 of near-infrared interactive projection camera lens provided by the invention；
Fig. 2 is chromaticity difference diagram (mm) on the axle in embodiment 1；
Fig. 3 is the astigmatism figure (mm) in embodiment 1；
Fig. 4 is the distortion figure (%) in embodiment 1；
Fig. 5 is ratio chromatism, figure (μm) in embodiment 1；
Fig. 6 is the primary structure schematic diagram of the embodiment 2 of near-infrared interactive projection camera lens provided by the invention；
Fig. 7 is chromaticity difference diagram (mm) on the axle in embodiment 2；
Fig. 8 is the astigmatism figure (mm) in embodiment 2；
Fig. 9 is the distortion figure (%) in embodiment 2；
Figure 10 is ratio chromatism, figure (μm) in embodiment 2；
Figure 11 is the primary structure schematic diagram of the embodiment 3 of near-infrared interactive projection camera lens provided by the invention；
Figure 12 is chromaticity difference diagram (mm) on the axle in embodiment 3；
Figure 13 is the astigmatism figure (mm) in embodiment 3；
Figure 14 is the distortion figure (%) in embodiment 3；
Figure 15 is ratio chromatism, figure (μm) in embodiment 3；
Figure 16 is the primary structure schematic diagram of the embodiment 4 of near-infrared interactive projection camera lens provided by the invention；
Figure 17 is chromaticity difference diagram (mm) on the axle in embodiment 4；
Figure 18 is the astigmatism figure (mm) in embodiment 4；
Figure 19 is the distortion figure (%) in embodiment 4；
Figure 20 is ratio chromatism, figure (μm) in embodiment 4；
Figure 21 is the primary structure schematic diagram of the embodiment 5 of near-infrared interactive projection camera lens provided by the invention；
Figure 22 is chromaticity difference diagram (mm) on the axle in embodiment 5；
Figure 23 is the astigmatism figure (mm) in embodiment 5；
Figure 24 is the distortion figure (%) in embodiment 5；
Figure 25 is ratio chromatism, figure (μm) in embodiment 5.
Figure 26 is the primary structure schematic diagram of the embodiment 6 of near-infrared interactive projection camera lens provided by the invention；
Figure 27 is chromaticity difference diagram (mm) on the axle in embodiment 6；
Figure 28 is the astigmatism figure (mm) in embodiment 6；
Figure 29 is the distortion figure (%) in embodiment 6；
Figure 30 is ratio chromatism, figure (μm) in embodiment 6.
Figure 31 is the primary structure schematic diagram of the embodiment 7 of near-infrared interactive projection camera lens provided by the invention；
Figure 32 is chromaticity difference diagram (mm) on the axle in embodiment 7；
Figure 33 is the astigmatism figure (mm) in embodiment 7；
Figure 34 is the distortion figure (%) in embodiment 7；
Figure 35 is ratio chromatism, figure (μm) in embodiment 7；
Figure 36 is the primary structure schematic diagram of the embodiment 8 of near-infrared interactive projection camera lens provided by the invention；
Figure 37 is chromaticity difference diagram (mm) on the axle in embodiment 8；
Figure 38 is the astigmatism figure (mm) in embodiment 8；
Figure 39 is the distortion figure (%) in embodiment 8；
Figure 40 is ratio chromatism, figure (μm) in embodiment 8；
Detailed description of the invention
With reference to the accompanying drawings foregoing invention content is specifically described:
As it is shown in figure 1, in embodiment 1, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 1, each parameter is as described below: TTL=11.51；F1=-2.99；F2=4.14；F3=17.65；F4=6.47；F=1.56
ImgH/D=0.53；
F1/f=-1.92；
F2/f=2.66；
F4/f=4.15；
(R5+R6)/(R5-R6)=-21.59
Systematic parameter: stop value 2.8
Table 1
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 414.6592 | ||
| 1 | Aspheric surface | 4.4952 | 0.3487 | F52R | 1.6934 | 3.4407 |
| 2 | Aspheric surface | 1.1364 | 0.8515 | 1.2072 | -0.8550 | |
| 3 | Sphere | Infinite | 2.5000 | BK7 | 1.1719 | |
| 4 | Sphere | Infinite | 0.1000 | 0.5849 | ||
| stop | Sphere | Infinite | 1.2492 | 0.5132 | ||
| 6 | Sphere | 13.9318 | 1.5994 | H-ZK11 | 2.0000 | |
| 7 | Sphere | -3.0606 | 0.0497 | 2.0000 | ||
| 8 | Aspheric surface | 2.1970 | 1.0309 | F52R | 1.7022 | -0.0806 |
| 9 | Aspheric surface | 2.4105 | 1.0575 | 1.4583 | -0.6120 | |
| 10 | Sphere | 6.7171 | 1.3752 | BK7 | 2.0000 | |
| 11 | Sphere | -6.0355 | 1.3493 | 2.0000 | ||
| IMG | Sphere | Infinite | 1.3018 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 2
As shown in Figure 6, in embodiment 2, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be concave surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 2, each parameter is as described below: TTL=11.28；F1=-2.71；F2=4.4；F3=13.7；F4=5.3；F=1.47
ImgH/D=0.44；
F1/f=-1.85；
F2/f=3.0；
F4/f=3.61；
(R5+R6)/(R5-R6)=-12.6
Systematic parameter: stop value 2.8
Table 3
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 414.7343 | ||
| 1 | Aspheric surface | 4.7321 | 0.4966 | F52R | 1.7351 | 3.6498 |
| 2 | Aspheric surface | 1.0587 | 0.8601 | 1.1493 | -0.6885 | |
| 3 | Sphere | Infinite | 2.6515 | BK7 | 1.1226 | |
| 4 | Sphere | Infinite | 0.0997 | 0.5815 | ||
| stop | Sphere | Infinite | 0.8263 | 0.5149 | ||
| 6 | Sphere | -100.0015 | 1.3349 | H-ZK11 | 2.0000 | |
| 7 | Sphere | -2.7077 | 0.0544 | 2.0000 | ||
| 8 | Aspheric surface | 2.1045 | 1.0310 | F52R | 1.4804 | -0.1226 |
| 9 | Aspheric surface | 2.4674 | 1.0119 | 1.3087 | -1.1281 | |
| 10 | Sphere | 5.7617 | 1.4809 | BK7 | 2.0000 | |
| 11 | Sphere | -4.6472 | 1.4348 | 2.0000 | ||
| IMG | Sphere | Infinite | 1.1923 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 4
As shown in figure 11, in embodiment 3, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be concave surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 3, each parameter is as described below: TTL=11.75；F1=-3.01；F2=4.08；F3=16.01；F4=7.32；F=1.63
ImgH/D=0.48；
F1/f=-1.84；
F2/f=2.5；
F4/f=4.48；
(R5+R6)/(R5-R6)=-17.55
Systematic parameter: stop value 2.8
Table 5
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 414.7388 | ||
| 1 | Aspheric surface | 4.4911 | 0.3348 | F52R | 1.7546 | 3.3494 |
| 2 | Aspheric surface | 1.1416 | 1.0011 | 1.2478 | -0.8161 | |
| 3 | Sphere | Infinite | 2.7720 | BK7 | 1.1957 | |
| 4 | Sphere | Infinite | 0.1252 | 0.6447 | ||
| stop | Sphere | Infinite | 1.1869 | 0.5711 | ||
| 6 | Sphere | 12.1532 | 1.3018 | H-ZK11 | 2.0000 | |
| 7 | Sphere | -3.1215 | 0.0237 | 2.0000 | ||
| 8 | Aspheric surface | 2.1605 | 1.0396 | F52R | 1.5955 | -0.1075 |
| 9 | Aspheric surface | 2.4215 | 1.1146 | 1.3696 | -0.5974 | |
| 10 | Sphere | -50.1328 | 1.4393 | BK7 | 2.0000 | |
| 11 | Sphere | -3.5075 | 1.4098 | 2.0000 | ||
| IMG | Sphere | Infinite | 1.3062 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 6
As shown in figure 16, in embodiment 4, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E3 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 4, each parameter is as described below: TTL=11.59；F1=-3.05；F2=4.12；F3=15.47；F4=17.01；F=1.51
ImgH/D=0.47；
F1/f=-2.02；
F2/f=2.73；
F4/f=11.26；
(R5+R6)/(R5-R6)=-14.96
Systematic parameter: stop value 2.8
Table 7
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 414.7251 | ||
| 1 | Aspheric surface | 4.4350 | 0.3573 | F52R | 1.6956 | 3.4574 |
| 2 | Aspheric surface | 1.1462 | 0.9313 | 1.2275 | -0.8741 | |
| 3 | Sphere | Infinite | 2.5366 | BK7 | 1.1692 | |
| 4 | Sphere | Infinite | 0.1817 | 0.6072 | ||
| stop | Sphere | Infinite | 1.4606 | 0.5095 | ||
| 6 | Sphere | 9.0228 | 1.7150 | H-ZK11 | 2.0000 | |
| 7 | Sphere | -3.3686 | 0.0497 | 2.0000 | ||
| 8 | Aspheric surface | 2.1832 | 1.0300 | F52R | 1.7407 | -0.0726 |
| 9 | Aspheric surface | 2.4960 | 0.7739 | 1.4930 | -0.6516 | |
| 10 | Sphere | 3.0696 | 1.2827 | BK7 | 2.0000 | 7 --> |
| 11 | Sphere | 4.0813 | 1.2682 | 2.0000 | ||
| IMG | Sphere | Infinite | 1.2083 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 8
As shown in figure 21, in embodiment 5, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be concave surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be concave surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 5, each parameter is as described below: TTL=12.02；F1=-2.89；F2=4.36；F3=12.24；F4=8.28；F=1.6
ImgH/D=0.46；
F1/f=-1.81；
F2/f=2.72；
F4/f=5.17；
(R5+R6)/(R5-R6)=-9.9
Systematic parameter: stop value 2.8
Table 9
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 414.8015 | ||
| 1 | Aspheric surface | 4.7095 | 0.4765 | F52R | 1.7911 | 3.5909 |
| 2 | Aspheric surface | 1.1118 | 0.9038 | 1.2194 | -0.7191 | |
| 3 | Sphere | Infinite | 2.7789 | BK7 | 1.1939 | |
| 4 | Sphere | Infinite | 0.1444 | 0.6414 | ||
| stop | Sphere | Infinite | 0.9488 | 0.5619 | ||
| 6 | Sphere | -100.0016 | 1.6068 | H-ZK11 | 2.0000 | 8 --> |
| 7 | Sphere | -2.6862 | 0.0544 | 2.0000 | ||
| 8 | Aspheric surface | 2.0930 | 1.0463 | F52R | 1.6320 | -0.1182 |
| 9 | Aspheric surface | 2.5633 | 1.0720 | 1.4180 | -1.1893 | |
| 10 | Sphere | -998.3688 | 1.5278 | BK7 | 2.0000 | |
| 11 | Sphere | -4.2071 | 1.4648 | 2.0000 | ||
| IMG | Sphere | Infinite | 1.2894 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 10
As shown in figure 26, in embodiment 6, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be concave surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 6, each parameter is as described below: TTL=10.36；F1=-2.72；F2=4.06；F3=9.08；F4=8.52；F=1.19
ImgH/D=0.47；
F1/f=-2.3；
F2/f=3.42；
F4/f=7.19；
(R5+R6)/(R5-R6)=-5.2
Systematic parameter: stop value 2.8
Table 11
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0015 | 414.5714 | ||
| 1 | Aspheric surface | 4.7491 | 0.4241 | F52R | 1.5610 | 3.7756 |
| 2 | Aspheric surface | 1.0726 | 0.6477 | 1.0573 | -0.7280 9 --> | |
| 3 | Sphere | Infinite | 1.9370 | BK7 | 1.0413 | |
| 4 | Sphere | Infinite | 0.3056 | 0.5384 | ||
| stop | Sphere | Infinite | 1.0090 | 0.3807 | ||
| 6 | Sphere | -97.7371 | 2.1397 | H-ZK11 | 2.0011 | |
| 7 | Sphere | -2.5105 | 0.0561 | 2.0011 | ||
| 8 | Aspheric surface | 2.1049 | 1.0358 | F52R | 1.6404 | -0.1043 |
| 9 | Aspheric surface | 3.1067 | 0.4351 | 1.4054 | -1.4966 | |
| 10 | Sphere | 2.9638 | 1.2340 | BK7 | 2.0011 | |
| 11 | Sphere | 8.0044 | 1.1642 | 2.0011 | ||
| IMG | Sphere | Infinite | 0.9730 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 12
As shown in figure 31, in embodiment 7, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the reflecting prism E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 7, each parameter is as described below: TTL=12.01；F1=-2.54；F2=4.02；F3=10.66；F4=9.0；F=1.06
ImgH/D=0.29；
F1/f=-2.4；
F2/f=3.80；
F4/f=8.5；
(R5+R6)/(R5-R6)=-7.66
Systematic parameter: stop value 2.8
Table 13
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient 10--> |
| obj | Sphere | Infinite | 466.9994 | 414.7163 | ||
| 1 | Aspheric surface | 5.3676 | 0.3681 | F52R | 1.6887 | 2.9912 |
| 2 | Aspheric surface | 1.0514 | 1.2586 | 1.2203 | -0.8884 | |
| 3 | Sphere | Infinite | 2.5014 | BK7 | 1.0634 | |
| 4 | Sphere | Infinite | 0.4027 | 0.5802 | ||
| stop | Sphere | Infinite | 1.4842 | 0.4327 | ||
| 6 | Sphere | 11.1729 | 2.0165 | H-ZK11 | 2.0011 | |
| 7 | Sphere | -3.0437 | 0.0546 | 2.0011 | ||
| 8 | Aspheric surface | 2.0424 | 1.0062 | F52R | 1.5247 | -0.2037 |
| 9 | Aspheric surface | 2.6554 | 0.6359 | 1.3356 | -1.5667 | |
| 10 | Sphere | 7.5580 | 1.0437 | BK7 | 2.0011 | |
| 11 | Sphere | -11.1347 | 1.2715 | 2.0011 | ||
| IMG | Sphere | Infinite | 0.8571 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 14
As shown in figure 36, in embodiment 8, this near-infrared interactive projection camera lens is by becoming image side sequentially to include to image source side: the first lens E1 of tool negative power, and it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Make the plane of reflection mirror E2 of light curved way；Second lens E3 of tool positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；3rd lens E4 of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface, and becomes image side surface and image source side to be aspheric surface；Having the 4th lens E5 of positive light coke, it becomes image side to be convex surface, and image source side is convex surface, and becomes image side surface and image source side to be sphere；Diaphragm is between the first lens E1 and the second lens E3；In described projection lens system, the second lens E3 and the four lens E5 is made up of glass.
From becoming image side to image source side, the two sides of the first lens E1 is S1, S2, and diaphragm face is S3, and the two sides of the second lens E3 is S4, S5, and the two sides of the 3rd lens E4 is S6, S7, and the two sides of the 4th lens E5 is S8, S9, and image source is S10.
In embodiment 8, each parameter is as described below: TTL=7.74；F1=-2.89；F2=3.97；F3=19.69；F4=6.34；F=1.66
ImgH/D=0.45；
F1/f=-1.74；
F2/f=2.39；
F4/f=3.82；
(R5+R6)/(R5-R6)=-15.83
Systematic parameter: stop value 2.8
Table 15
| Surface number | Surface type | Radius of curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| obj | Sphere | Infinite | 467.0000 | 358.3602 | ||
| 1 | Aspheric surface | 6.1068 | 0.4173 | F52R | 1.8064 | 6.9581 |
| 2 | Aspheric surface | 1.1911 | 2.2937 | 1.2498 | -0.5322 | |
| 3 | Coordinate breakpoint | 0.0000 | - | 0.0000 | ||
| 4 | Sphere | Infinite | 0.0000 | MIRROR | 1.2283 | |
| 5 | Coordinate breakpoint | -1.2938 | - | 0.0000 | ||
| stop | Sphere | Infinite | -0.5169 | 0.6567 | ||
| 7 | Sphere | -10.7516 | -0.3820 | H-ZK11 | 0.9442 | |
| 8 | Sphere | 3.2030 | -0.8897 | 0.9886 | ||
| 9 | Aspheric surface | -2.4523 | -0.9470 | F52R | 1.2166 | -0.3151 |
| 10 | Aspheric surface | -2.7829 | -0.9906 | 1.1600 | -3.2247 | |
| 11 | Sphere | -5.0984 | -1.3600 | BK7 | 1.3119 | |
| 12 | Sphere | 8.0502 | -1.3639 | 1.3371 |
| IMG | Sphere | Infinite | 1.2346 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens:
Table 16
Fig. 2 is that on the axle of embodiment 1, chromaticity difference diagram (mm), Fig. 3 are astigmatism figure (mm), Fig. 4 of embodiment 1 be distortion figure (%), Fig. 5 of embodiment 1 is ratio chromatism, figure (μm) of embodiment 1.
Fig. 7 is that on the axle of embodiment 2, chromaticity difference diagram (mm), Fig. 8 are astigmatism figure (mm), Fig. 9 of embodiment 2 be distortion figure (%), Figure 10 of embodiment 2 is ratio chromatism, figure (μm) of embodiment 2.
Figure 12 is that on the axle of embodiment 3, chromaticity difference diagram (mm), Figure 13 are astigmatism figure (mm), Figure 14 of embodiment 3 be distortion figure (%), Figure 15 of embodiment 3 is ratio chromatism, figure (μm) of embodiment 3.
Figure 17 is that on the axle of embodiment 4, chromaticity difference diagram (mm), Figure 18 are astigmatism figure (mm), Figure 19 of embodiment 4 be distortion figure (%), Figure 20 of embodiment 4 is ratio chromatism, figure (μm) of embodiment 4.
Figure 22 is that on the axle of embodiment 5, chromaticity difference diagram (mm), Figure 23 are astigmatism figure (mm), Figure 24 of embodiment 5 be distortion figure (%), Figure 25 of embodiment 5 is ratio chromatism, figure (μm) of embodiment 5.
Figure 27 is that on the axle of embodiment 6, chromaticity difference diagram (mm), Figure 28 are astigmatism figure (mm), Figure 29 of embodiment 6 be distortion figure (%), Figure 30 of embodiment 6 is ratio chromatism, figure (μm) of embodiment 6.
Figure 32 is that on the axle of embodiment 7, chromaticity difference diagram (mm), Figure 33 are astigmatism figure (mm), Figure 34 of embodiment 7 be distortion figure (%), Figure 35 of embodiment 7 is ratio chromatism, figure (μm) of embodiment 7.
Figure 37 is that on the axle of embodiment 8, chromaticity difference diagram (mm), Figure 38 are astigmatism figure (mm), Figure 39 of embodiment 8 be distortion figure (%), Figure 40 of embodiment 8 is ratio chromatism, figure (μm) of embodiment 8.
By chromaticity difference diagram, astigmatism figure, distortion figure and ratio chromatism, figure on the axle of each embodiment, it can be seen that the present invention has good optical property.
Although describing principles of the invention and detailed description of the invention above for near-infrared interactive projection camera lens; but under the above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and deformation on the basis of above-described embodiment, and these improve or deformation all falls within protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions above are intended merely to the explanation purpose of the present invention, and be not intended to limit the present invention, protection scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. a near-infrared interactive projection camera lens, it is characterised in that: sequentially include from becoming image side to image source side:
First lens of tool negative power, it becomes image side to be convex surface, and image source side is concave surface；
Make the reflection optical surface of light curved way；
Second lens of tool positive light coke, its image source side is convex surface；
3rd lens of tool positive light coke, it becomes image side to be convex surface, and image source side is concave surface；
4th lens of tool positive light coke；
Diaphragm is placed between the first lens and the second lens, and described camera lens meets following relationship: 0.25 < ImgH/D < 0.55
Wherein, ImgH is the half of image source diameter diagonal line length；D is the first lens imaging side vertical height to the central optical axis being perpendicular to image source.
2. near-infrared interactive projection camera lens according to claim 1, it is characterised in that: in described camera lens, the second lens and the 4th lens are made up of glass material.
3. near-infrared interactive projection camera lens according to claim 2, it is characterised in that: described camera lens meets following relationship:
-3<f1/f<-1；
Wherein, f1 is the focal length of the first lens, and f is the whole focal length of lens system.
4. near-infrared interactive projection camera lens according to claim 3, it is characterised in that: described camera lens meets following relationship: 2 < f2/f < 4
Wherein, f2 is the focal length of the second lens, and f is the whole focal length of lens system.
5. near-infrared interactive projection camera lens according to claim 4, it is characterised in that: described camera lens meets following relationship:
3<f4/f<12；
-22<(R5+R6)/(R5-R6)<-5
Wherein, f4 is the focal length of the 4th lens, and f is the whole focal length of described lens system, and R5 is the radius of curvature becoming image side surface of the 3rd lens, and R6 is the radius of curvature of the image source side of the 3rd lens.
6. according to the arbitrary described near-infrared interactive projection camera lens of claim 1-5, it is characterised in that: in described camera lens, the second lens imaging side is convex surface.
7. near-infrared interactive projection camera lens according to claim 6, it is characterised in that: in described camera lens, the 4th lens imaging side is convex surface.
8. near-infrared interactive projection camera lens according to claim 7, it is characterised in that: in described camera lens, the 4th lens image source side is convex surface.
9. according to the arbitrary described near-infrared interactive projection camera lens in claim 1-5,7,8, it is characterised in that: described in make the reflection optical surface of light curved way be reflecting prism, or plane of reflection mirror.
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| PCT/CN2015/072050 WO2016011801A1 (en) | 2014-07-22 | 2015-01-30 | Projection lens |
| EP15766037.4A EP3026477B1 (en) | 2014-07-22 | 2015-01-30 | Projection lens |
| US14/779,785 US9529180B2 (en) | 2014-07-22 | 2015-01-30 | Projection lens |
| ES15766037.4T ES2689091T3 (en) | 2014-07-22 | 2015-01-30 | Projection lens |
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| ES2689091T3 (en) | 2014-07-22 | 2018-11-08 | Zhejiang Sunny Optics Co., Ltd. | Projection lens |
| CN105607230B (en) * | 2016-02-05 | 2018-01-19 | 中山市众盈光学有限公司 | A kind of electronic viewfinder camera lens |
| CN105759404B (en) | 2016-05-04 | 2020-06-16 | 北京疯景科技有限公司 | Lens and imaging device |
| CN105785556A (en) * | 2016-05-20 | 2016-07-20 | 深圳众瑞光科技有限公司 | Thin-form right-angle breakover imaging lens set as well as splicing structure and focusing device thereof |
| WO2019019625A1 (en) | 2017-07-25 | 2019-01-31 | 浙江舜宇光学有限公司 | Camera lens |
| CN108333731B (en) * | 2018-03-09 | 2022-12-23 | 中国科学院西安光学精密机械研究所 | Medium wave infrared search tracking lens based on compensating mirror |
| RU2722974C1 (en) * | 2019-10-28 | 2020-06-05 | АКЦИОНЕРНОЕ ОБЩЕСТВО "Научно-исследовательский институт оптико-электронного приборостроения" (АО "НИИ ОЭП") | Optical system for forming an infrared image |
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| CN103797396A (en) * | 2011-07-04 | 2014-05-14 | 富士胶片株式会社 | Real-image zoom finder and image pick-up device |
| CN204009209U (en) * | 2014-07-22 | 2014-12-10 | 浙江舜宇光学有限公司 | Near infrared interactive projection camera lens |
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