CN103105665B - Novel optical path deflection camera lens - Google Patents
Novel optical path deflection camera lens Download PDFInfo
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- CN103105665B CN103105665B CN201310069891.1A CN201310069891A CN103105665B CN 103105665 B CN103105665 B CN 103105665B CN 201310069891 A CN201310069891 A CN 201310069891A CN 103105665 B CN103105665 B CN 103105665B
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Abstract
The invention relates to a novel optical path deflection camera lens which can achieve instant imaging, and also can realize path deflection and meet the requirements on wide angle, large aperture and high-resolution imaging quality. The aims of the invention are achieved by the following technical scheme: the novel optical path deflection camera lens comprises a front group of lenses M, a reflector, a fourth lens and a rear group of lenses N in sequence from an object side to an image side, wherein the fourth lens is a relay lens R with positive focal power for close-range imaging. The novel optical path deflection camera lens has the advantages that by adopting a new scheme of additionally arranging the relay lens with positive focal power for close-range imaging between a front group of wide-angle negative long-range lenses and a rear group of wide-angle negative long-range lenses, the novel optical path deflection camera lens widens an air gap between lenses by using an optical structure with instant imaging, satisfies the space required for optical path deflection, and shortens the optical length along the axial direction.
Description
Technical field
The present invention relates to a kind of Novel light path deviation pick-up lens.
Background technology
The existing installable space of most video monitoring system is comparatively large, does not therefore need to shorten the total length along optical axis direction, and can make supporting large aperture like this, the requirement ratio of wide-angle high definition and long back work distance is easier to realize, structure is also simple.But some special occasions (installing the restriction of wall thickness as being subject to), camera can only be mounted to or other angles vertical with optical axis.Because the focal length of wide-angle video monitoring camera camera lens is all shorter, will accomplish rear cut-off distance very long (if rear cut-off distance is 4 to 5 times of focal length) by it, be more difficult to realize the deviation of light path.Common solution adopts wide-angle pre-objective to connect with field lens and relay lens to carry out the mode of secondary imaging, make between field lens and relay lens, to form the deviation that light path is carried out in enough large spaces, as Fig. 1, this scheme is well used at pin hole video frequency monitoring camera and the longer optical projection system of length.But, because drift angle, aperture on the axle that relay lens is born is comparatively large and light hurdle spherical aberration correction is bad, make this scheme be difficult to be applied in aperture very greatly and the exigent camera system of sharpness.
Summary of the invention
Object one of the present invention is to provide and a kind ofly can realizes Polaroid Novel light path deviation pick-up lens.
Object two of the present invention is to provide a kind of pick-up lens that can realize light path deviation, can meet again wide-angle, aperture large and reach the Novel light path deviation pick-up lens of high resolution imaging quality.
Object of the present invention is achieved through the following technical solutions: a kind of Novel light path deviation pick-up lens, is characterized in that: it is positive rear arrangement of mirrors head N that pick-up lens comprises by sequentially to comprise complex focus be negative front arrangement of mirrors head M, catoptron, the 4th lens and complex focus in thing side to image side; The relay lens R of the closely imaging of described to be the 4th lens be band positive light coke.
Adopt between forward and backward group of wide-angle retrofocus type camera lens, increase the relay lens R of the closely imaging of a slice band positive light coke, achieve and widened airspace between lens with Polaroid optical texture, meet the new departure in the space needed for light path deviation.New " Polaroid " optical texture, with the optical texture ratio usually adopting " secondary imaging " to realize light path deviation, it is few that it has eyeglass number, structure is simple, there is not the problems such as " the light hurdle spherical aberration " being difficult to correct, be greater than 60 ° in visual field, aperture is greater than F1.6, rear cut-off distance is greater than 2f ＇, under all many condition that hurdle light ratio is little, the requirement of video monitoring shooting high resolution imaging high-quality can be reached.
Further, the relay lens R of described pick-up lens meets following relationship (arranging by normalization focal length):
0.8<│M＇R│<4 ……(1)
Wherein, M ＇ R represents the reduction magnification of relay lens R;
Further, described pick-up lens also meets following relationship (arranging by normalization focal length value):
<0.1 before 0.05<hp1/f ＇ ... (2)
The complex focus of arrangement of mirrors head M before wherein representing before f ＇; Hp1 represents the entrance pupil radius of optical system.
Further, described pick-up lens also meets following relationship:
3<d6<4 ………(3)
With di (i=1,2,3 ... 18) represent the airspace of lens thickness and lens (or before and after light hurdle), d6 is the distance of the 3rd lens and catoptron airspace.
Further, described pick-up lens also meets following relationship (arranging by normalization focal length value):
<3.6 after 3.2<f ＇ ... (4)
The complex focus of arrangement of mirrors head N after representing after f ＇;
Further, the 3rd lens that the second lens that described front arrangement of mirrors head M sequentially comprises by thing side to image side the first lens that eyeglass is convex-concave positive lens, eyeglass is double-concave negative lens, eyeglass are convex-concave positive lens;
The 7th lens that the 6th lens that described rear arrangement of mirrors head N sequentially comprises by thing side to image side the 5th lens that eyeglass is convex-concave negative lens, eyeglass is biconvex positive lens, eyeglass are convex-concave positive lens;
Further, described pick-up lens also meets following relationship (arranging by normalization focal length value):
1.74<n1<1.82，25<v1<28 ……(5)
1.63<n4<1.73，45<v4<53 ……(6)
1.61<n7<1.66，53<v7<61 ………(7)
With ni, vi (i=1,2,3 ... 7) refractive index of the glass that each lens adopt in camera lens and corresponding Abbe number is represented, n1, v1 represent the refractive index of the glass that the first lens adopt and corresponding Abbe number, n4, v4 represent the refractive index of the glass that the 4th lens adopt and corresponding Abbe number, and n7, v7 represent the refractive index of the glass that the 7th lens adopt and corresponding Abbe number.
Further, described first lens are sequentially to the optical material of the 7th lens: H-ZF6, H-ZK9A, H-LAK7, H-ZbaF5, H-ZF7LA, H-LaK12, H-ZbaF5.
Further, also be provided with a slice flint glass of resistance to irradiation ZF6 and a slice between described first lens and image to decay the boron system glass of neutron irradiation, described first lens are sequentially to the optical material of the 7th lens: ZF7, H-LaK12, H-ZbaF5 of ZF6, the H-ZK9A of flint glass, H-LAK7, H-ZbaF5, flint glass.
Again further, described 5th lens and the 6th lens combination plastic charge-coupled; Described 7th lens are close to aplanatic condition.
Compared to prior art, the invention has the advantages that: the new departure adopting the relay lens of the closely imaging increasing a slice band positive light coke between forward and backward group of wide-angle retrofocus type camera lens, achieve and widened airspace between lens with Polaroid optical texture, meet the space needed for light path deviation, shorten optical length vertically.With the optical texture ratio usually adopting " secondary imaging " to realize light path deviation, it is few that it has eyeglass number, structure is simple, do not exist " the light hurdle spherical aberration " that be difficult to correct, simultaneously, achieve aperture large (F number >=1.6), rear cut-off distance long (>2f ＇) and reach high resolution imaging quality (180lp/mm, unified, full filed, MTF>0.3) wide-angle (field angle is greater than 60 °) the video monitoring pick-up lens that requires, overcome the deficiency usually adopting secondary imaging scheme.When adopting environmental protection optical glass material, can be used for supporting high definition security protection video monitoring camera; When adopting the anti-special optical glass of resistance to irradiation, it can be used for the shooting of high definition Flouride-resistani acid phesphatase video monitoring, improves the serviceable life of camera system under intense radiation conditions.
Accompanying drawing explanation
Fig. 1 is the optical principle schematic diagram that the wide-angle short focus usually adopted realizes the secondary imaging scheme of light path deviation.Wherein, A1 is the short focus objective lens of preposition wide-angle, B1 is the actual light hurdle of the short focus objective lens of wide-angle, the middle inverted image that C1 is, D1 is field lens, and E1 is the catoptron of light path deviation, and F1 is relay lens group, G1 is the actual light hurdle (B1 and G1 is mutually conjugate imaging relation) of relay lens group, and H1 is erect image formed by system.F1 ＇, G1 ＇, H1 ＇ are lens combination F1 respectively, light hurdle G1 and imaging surface H1 along deviation front axle to correspondence arrange and the picture become.
Fig. 2 is the optical principle schematic diagram that apparatus of the present invention realize the Polaroid scheme that wide-angle short-focus lens light path deviation adopts.Wherein a is the positive virtual image that before negative lens, arrangement of mirrors head M becomes, and I2 is light path deflection mirror, and D2 is relay lens R, b is actual light hurdle, and N is group after positive lens, and c is inverted image formed by system.D2 ＇, b ＇, N ＇ are setting corresponding vertically before relay lens R, light hurdle b and rear arrangement of mirrors head N deviation respectively.C ＇ is the picture become vertically before c deviation.D ＇ is the conjugation intermediary image of D2 ＇ to the picture a that front arrangement of mirrors head M becomes.
Fig. 3 is the optical lens structural representation of optical devices of the present invention.Wherein, A2, B2, C2 tri-lens form the front arrangement of mirrors head M of new camera lens; D2 sheet is relay lens R; E2, F2, G2 form the rear arrangement of mirrors head N of new camera lens; H2 is the cover glass of picture pick-up device; I2 is the catoptron of deviation light path.R1, R2 in figure ... R16 represents sphere (or plane) radius of each lens respectively.D1, d2 ... d16 represents the airspace between the thickness of lens or lens.Actual light hurdle J2 to be placed in after relay lens R and new camera lens between arrangement of mirrors head N.
Fig. 4 is that optical devices of the present invention are for optical lens structural representation during anti-resistance to strong irradiation.Fig. 4 is the parallel plate glass L2 having set up parallel plate glass K2 that optical material is leaded ZF6 and boracic system optical material before Fig. 3 optical texture.H-ZF6 and H-ZF7LA environment-friendly type glass in new camera lens changes leaded ZF6 and ZF7 optical material into.
Fig. 5 is the geometric-optical aberration curve map of optical camera lens device example of the present invention.Wherein a is axial spherical aberration curve map, b is astigmatism curve map, c is relative distortion curve map, d is ratio chromatism, curve map.The ordinate of a is the ratio that each aperture is high and full aperture is high; The unit of horizontal ordinate is mm.B, c, d ordinate is the ratio at each visual field and full filed angle; The unit of horizontal ordinate is respectively mm, % and micron.
Fig. 6 be optical camera lens device embodiment of the present invention object distance be 400f ＇, unified, full spectrum (full filed under d, f, c) condition (in figure a), 0.7 visual field (b in figure), on axle (c in figure) represent their meridian and optical transfer function (MTF) curve map in sagitta of arc direction.The unit of horizontal ordinate be line right/mm.
Fig. 7 be optical camera lens device embodiment of the present invention object distance be 160f ＇, full filed under unified, full spectrum (d, F, C) condition (in figure a), 0.7 visual field (b in figure), on axle (c in figure) represent their meridian and optical transfer function (MTF) curve map in sagitta of arc direction.The unit of horizontal ordinate be line right/mm.
Fig. 8 is the structural representation of the optical-mechanical profile of optical camera lens device embodiment of the present invention.
Embodiment
Below in conjunction with Figure of description and embodiment, content of the present invention is described in detail:
Fig. 1 is the optical principle schematic diagram that the wide-angle short focus usually adopted realizes the secondary imaging scheme of light path deviation, it adopts the short focus objective lens A1 of preposition wide-angle to connect with field lens D1 and relay lens F1 to carry out the mode of secondary imaging, make to be formed between field lens D1 and relay lens F1 the deviation that light path is carried out in enough large spaces, this scheme is well used at pin hole video frequency monitoring camera and the longer optical projection system of length.But, because drift angle, aperture on the axle that relay lens F1 bears is comparatively large and light hurdle spherical aberration correction is bad, make this scheme be difficult to be applied in aperture very greatly and the exigent camera system of sharpness.
Present invention employs Polaroid optical texture schemes different with it, namely on the basis of wide-angle anti-long distance structural type camera lens, between forward and backward group of Qi Guanglan, insert a slice relaying positive lens.It reduces " thing " organized on front focal plane before being imaged on negative optical cement degree or after amplification imaging organizes back focal plane after positive light coke, new " as " point as " thing " of rear group, through after organize reimaging on picture pick-up device face.What it became similarly is inverted image, the same with common video monitoring pick-up lens.
Fig. 2 is the optical principle schematic diagram that apparatus of the present invention realize the Polaroid scheme that wide-angle short-focus lens light path deviation adopts, it adopts new departure of the relay lens of the closely imaging increasing a slice band positive light coke between forward and backward group of wide-angle retrofocus type camera lens, achieve and widened airspace between lens with Polaroid optical texture, meet the space needed for light path deviation, shorten optical length vertically.Simultaneously, achieve aperture large (F number >=1.6), rear cut-off distance long (>2f ＇) and reach high resolution imaging quality (180lp/mm, unified, full filed, MTF>0.3) wide-angle (field angle is greater than 60 °) the video monitoring pick-up lens that requires, overcome the deficiency usually adopting secondary imaging scheme.
Fig. 3 is a kind of embodiment optical texture schematic diagram of optical devices of the present invention.It is made up of 7 lens and a catoptron and light hurdle; its optical material adopted is followed successively by: H-ZF6, H-ZK9A, H-LaK7, H-ZBaF5, H-ZF7LA, H-LaK12, H-ZK11, and its profile is followed successively by: A2 is convex-concave positive lens, B2 is double-concave negative lens, C2 is convex-concave negative lens, D2 is biconvex positive lens, E2 is convex-concave positive lens, F2 is biconvex positive lens, G2 is convex-concave positive lens, H2 is cover glass on imaging sensor.Wherein A2, B2, C2 tri-represents its complex focus before forming front arrangement of mirrors head M, the f ＇ of optical system; D2 sheet is relay lens, and its focal length represents with f ＇ R, and its multiplying power in systems in which represents with M ＇ R; E2, F2, G2 tri-forms the rear arrangement of mirrors head N of optical system, to represent his complex focus after f ＇, and wherein E2, F2 two panels composition gummed group.In the present embodiment, before f ＇ after=-2.06, f ＇ R=4.4, M ＇ R=+2.31386, f ＇=3.349.The space interval that it realizes deviation light path is arranged between C2 sheet and D2 sheet, and in the present embodiment, the space interval of this deviation light path reaches 3.3f ＇ (normalization focal length).
Form the number of lenses of apparatus of the present invention, material and shape to arrange according to the concrete occasion of application.But when arranging, preferably meet following condition:
0.8<│M＇R│<4 ……(1)
<0.1 before 0.05<hp1/f ＇ ... (2)
1.74<n1<1.82，25<v1<28 ……(3)
1.63<n4<1.73，45<v4<53 ……(4)
1.61<n7<1.66，53<v7<61 ………(5)
3<d6<4 ………(6)
<3.6 after 3.2<f ＇ ... (7)
The above-mentioned object that must satisfy condition is set:
The object that condition (1) sets is: make relay lens R meet closely imaging, to realize widening the airspace between front arrangement of mirrors head M and relay lens R, reaches the requirement of light beam deviation.The multiplying power of suitable control relay lens, can make the total drift angle of aperture angle little, is beneficial on the one hand itself and does not produce aberration on the senior axle that is difficult to correct, also help total drift angle of arrangement of mirrors head N after reducing on the other hand, the structure of rear arrangement of mirrors head N is simplified.In addition, when system requirements is longer, it is more favourable to get multiplying power amplification ratio.
The object that condition (2) sets is: not too large by controlling front arrangement of mirrors head M aperture angle, not excessive to ensure the incident angle entering relay lens R, and the total drift angle being beneficial to relay lens R can ensure that it does not produce senior aberration on the axle that is difficult to correct.Because the drift angle, aperture of front arrangement of mirrors head M is little, the correction of front arrangement of mirrors head M to off-axis aberration can be made easy.
The object that condition (3) sets is: by the size of control d6, make the entrance pupil position close front arrangement of mirrors head M first surface as far as possible that actual light hurdle becomes with relay lens R front arrangement of mirrors head M, be beneficial to the maximum caliber reducing front arrangement of mirrors head M, realize the miniaturization of optical devices.
The object that condition (4) sets is: when meeting optical system and having larger relative aperture, while ensureing that the bore on actual light hurdle is not excessive, optical system can be made to have longer rear cut-off distance.
The object that condition (5) sets is: allow the first eyeglass A2 produce larger+S1 (coefficient of spherical aberration) ,+C1 (axial chromatic aberration coefficient), after removing to balance front arrangement of mirrors head M, two eyeglasses produce larger-S1 and-CI sums, on the residue axle that front arrangement of mirrors head M is formed spherical aberration and spherochromatism not too large.In addition, when the object of setting model (5) is also that consideration is used in anti-resistance to radiation parameter, good leaded ZF6 or ZF7 of anti-radiation-resistant property can be adopted, to reduce the destroying infection of strong irradiation to picture pick-up device.
The object that condition (6) sets is: the total drift angle, aperture born due to relay lens is comparatively large, chooses higher refractive index, is conducive to reducing senior aberration that its produces particularly high-order spherical aberration on axle.By choosing the Abbe number of setting range, the remaining-C1 of arrangement of mirrors head M ,-C2 value before the+C1 that it can be made to produce and+C2 balance.
The object that condition (7) sets is: last a slice G2 of rear arrangement of mirrors head N is close to meeting aplanatic condition positive lens, improves the aperture angle that its refractive index can increase rear arrangement of mirrors head N, does not affect again spherical aberration on the aberration corrected, particularly axle.The object of the optical material that employing Abbe number is higher is the impact on spherochromatism after reduction hole diameter enlargement.
The principal character of optical camera lens device of the present invention is:
Adopt the positive power lens setting up a slice closely imaging between anti-long distance wide-angle lens front group and rear group as front, " relaying " of rear group, realize pulling open larger space interval in camera lens inside, to meet the requirement of light path deviation, new " Polaroid " optical texture, with the optical texture ratio usually adopting " secondary imaging " to realize light path deviation, it is few that it has eyeglass number, structure is simple, do not exist " the light hurdle spherical aberration " that be difficult to correct, 60 ° are greater than in visual field, aperture is greater than F1.6, rear cut-off distance is greater than 2f ＇, under all many condition that hurdle light ratio is little, reach the requirement of video monitoring shooting high resolution imaging high-quality: full filed, full aperture, full spectrum, when 180lp/mm, MTF >=0.3.Due to light path deviation, new camera lens is made to be applicable to the particular/special requirement of the axially short video monitoring system of requirement.Due to light path deviation, make to have very strong penetration capacity and destroy the high-level radiation of components and parts on picture pick-up device can not directly enter on picture pick-up device target surface; Simultaneously before camera lens of the present invention, increase certain thickness flint glass and boron system glass, the high-level radiation decay entering optical system can be made, play anti-radiation hardness effect, greatly can delay camera lens and picture pick-up device serviceable life in nuclear radiation occasion.
Embodiment
Table 1 is a kind of embodiment data (by focal distance f ＇=1 normalization) of optical camera lens device of the present invention
Starting condition: object distance l1=-400, image space rear cut-off distance l '=2.0108, optics overall length TOTR=12.574 object space aperture angle: u1=-0.000775, image space aperture angle: u ＇=0.298068, maximum F number=F1.6, maximum field of view angle: 2 ω=66.8 ° (object height 2y=531.9); Maximum paraxial image height: 2y ＇=1.3198; Design main spectral line: d, colour killing spectral line scope: F, C
In table 1: n1, n2, n3 ... n8 is followed successively by the refractive index of a lens glass material
V1, v2, v3 ... v8 is followed successively by the Abbe number of each lens glass material
R1, R2, R3 ... R19 is followed successively by the radius-of-curvature of each of lens
D1, d2, d3 ... d19 is followed successively by the airspace between the thickness of each lens or lens
L ＇ is the image space rear cut-off distance of optical system
Table 1
First-order aberration coefficient: Σ S1=0.00144, Σ S2=-0.00064, Σ S3=0.00012, Σ S4=0.00212, Σ S5=0.10896, Σ C1=-0.00013, Σ C2=-0.00016
Fig. 4 is that optical devices of the present invention are for optical lens structural representation during anti-resistance to strong irradiation.The parallel plate glass L2 of parallel plate glass K2 that optical material is leaded ZF6 and boracic system optical material has been set up before Fig. 3 optical texture.H-ZF6 and H-ZF7LA environment-friendly type glass in new camera lens changes leaded ZF6 and ZF7 optical material into.When adopting environmental protection optical glass material, can be used for supporting high definition security protection video monitoring camera; When adopting the anti-special optical glass of resistance to irradiation, it can be used for the shooting of high definition Flouride-resistani acid phesphatase video monitoring, improves the serviceable life of camera system under intense radiation conditions.
Fig. 5 is the geometric-optical aberration curve map of optical camera lens device example of the present invention.Wherein a is axial spherical aberration curve map, b is astigmatism curve map, c is relative distortion curve map, d is ratio chromatism, curve map.The ordinate of a is the ratio that each aperture is high and full aperture is high; The unit of horizontal ordinate is mm.B, c, d ordinate is the ratio at each visual field and full filed angle; The unit of horizontal ordinate is respectively mm, % and micron.Data in figure we can find out that this camera lens has lower spherical aberration, astigmatism, ratio chromatism, and lower distortion, thus be well positioned to meet necessary for monitoring image definition and deformation requirement.
Fig. 6 be optical camera lens device embodiment of the present invention object distance be 400f ＇, unified, full spectrum (full filed under d, f, c) condition (in figure a), 0.7 visual field (b in figure), on axle (c in figure) represent their meridian and optical transfer function (MTF) curve map in sagitta of arc direction.The unit of horizontal ordinate be line right/mm.From figure, we can find out when object distance is 400f ＇, mtf value 180 lines right/mm in be still in higher level, therefore there is higher resolution, be well positioned to meet the requirement of necessary for monitoring.
Fig. 7 be optical camera lens device embodiment of the present invention object distance be 160f ＇, full filed under unified, full spectrum (d, F, C) condition (in figure a), 0.7 visual field (b in figure), on axle (c in figure) represent their meridian and optical transfer function (MTF) curve map in sagitta of arc direction.The unit of horizontal ordinate be line right/mm.From figure, we can find out when object distance is 160f ＇, mtf value 180 lines right/mm in be still in higher level, therefore there is higher resolution, be well positioned to meet the requirement of necessary for monitoring.
Claims (9)
1. a Novel light path deviation pick-up lens, is characterized in that: pick-up lens is positive rear arrangement of mirrors head N by sequentially to comprise complex focus be negative front arrangement of mirrors head M, catoptron, the 4th lens and complex focus in thing side to image side;
The 4th described lens are the relay lens R of the closely imaging of band positive light coke;
That is, the relay lens R of described pick-up lens meets following relationship, arranges by normalization focal length:
0.8<│M＇R│<4……(1)
Wherein, M ＇ R represents the reduction magnification of relay lens R.
2. Novel light path deviation pick-up lens according to claim 1, is characterized in that: described pick-up lens also meets following relationship, arranges by normalization focal length value:
<0.1 before 0.05<hp1/f ＇ ... (2)
The complex focus of arrangement of mirrors head M before wherein representing before f ＇; Hp1 represents the entrance pupil radius of optical system.
3. Novel light path deviation pick-up lens according to claim 1, is characterized in that: described pick-up lens also meets following relationship, arranges by normalization focal length value:
<3.6 after 3.2<f ＇ ... (4)
The complex focus of arrangement of mirrors head N after representing after f ＇.
4. the Novel light path deviation pick-up lens according to claims 1 to 3 any one, is characterized in that: the 3rd lens that the second lens that described front arrangement of mirrors head M sequentially comprises by thing side to image side the first lens that eyeglass is convex-concave positive lens, eyeglass is double-concave negative lens, eyeglass are convex-concave positive lens;
Described rear arrangement of mirrors head N is convex-concave and the 7th lens of positive lens by the 6th lens that thing side to image side sequentially comprises the 5th lens that eyeglass is convex-concave negative lens, eyeglass is biconvex positive lens, eyeglass.
5. Novel light path deviation pick-up lens according to claim 4, is characterized in that: described pick-up lens also meets following relationship:
3<d6<4………(3)
D6 is the distance of the 3rd lens and catoptron airspace.
6. Novel light path deviation pick-up lens according to claim 4, is characterized in that: described pick-up lens meets following relationship, arranges by normalization focal length value:
1.74<n1<1.82，25<v1<28……(5)
1.63<n4<1.73，45<v4<53……(6)
1.61<n7<1.66，53<v7<61………(7)
N1, v1 represent the refractive index of the glass that the first lens adopt and corresponding Abbe number, n4, v4 represent the refractive index of the glass that the 4th lens relay lens R adopts and corresponding Abbe number, and n7, v7 represent the refractive index of the glass that the 7th lens adopt and corresponding Abbe number.
7. Novel light path deviation pick-up lens according to claim 4, is characterized in that: described first lens are sequentially to the optical material of the 7th lens: H-ZF6, H-ZK9A, H-LAK7, H-ZbaF5, H-ZF7LA, H-LaK12, H-ZbaF5.
8. Novel light path deviation pick-up lens according to claim 4, it is characterized in that: be also provided with a slice flint glass of resistance to irradiation ZF6 and a slice between described first lens and image and decay the boron system glass of neutron irradiation, described first lens are sequentially to the optical material of the 7th lens: ZF7, H-LaK12, H-ZbaF5 of ZF6, the H-ZK9A of flint glass, H-LAK7, H-ZbaF5, flint glass.
9. Novel light path deviation pick-up lens according to claim 4, is characterized in that: described 5th lens and the 6th lens combination plastic charge-coupled.
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| CN112630979B (en) * | 2020-12-31 | 2024-06-11 | 深圳纳德光学有限公司 | Eyepiece optical system capable of superposing light paths and head-mounted display device |
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| TWI284747B (en) * | 2006-05-18 | 2007-08-01 | Young Optics Inc | Fixed-focus lens |
| JP2010117672A (en) * | 2008-11-14 | 2010-05-27 | Samsung Yokohama Research Institute Co Ltd | Image projection device |
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2013
- 2013-03-05 CN CN201310069891.1A patent/CN103105665B/en active Active
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| CN1815288A (en) * | 2005-06-02 | 2006-08-09 | 深圳市科创数字显示技术有限公司 | 90-degree turning rear-projection object lens |
| CN101285926A (en) * | 2007-04-12 | 2008-10-15 | 深圳市科创数字显示技术有限公司 | Lens for three-piece type LCOS thin type large-screen high-resolution back projection television |
| CN101369052A (en) * | 2008-08-29 | 2009-02-18 | 北京理工大学 | Zooming and focusing system based on MOEMS |
| CN203133374U (en) * | 2013-03-05 | 2013-08-14 | 福建福特科光电股份有限公司 | Novel optical path deviation shooting lens |
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| CN103105665A (en) | 2013-05-15 |
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