CN110542979B - Industrial lens system with large clear aperture - Google Patents
Industrial lens system with large clear aperture Download PDFInfo
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- CN110542979B CN110542979B CN201910079497.3A CN201910079497A CN110542979B CN 110542979 B CN110542979 B CN 110542979B CN 201910079497 A CN201910079497 A CN 201910079497A CN 110542979 B CN110542979 B CN 110542979B
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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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
- G02B13/005—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having spherical lenses only
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Abstract
The invention relates to the technical field of lenses, in particular to a large clear aperture industrial lens system which comprises a first single positive spherical lens, a second single positive spherical lens, a third single negative spherical lens, a diaphragm, a fifth single negative spherical lens, a sixth single positive spherical lens, a seventh single positive spherical lens, an eighth single positive spherical lens, a ninth single positive spherical lens and a tenth single negative spherical lens, wherein the diaphragm is arranged between the third single negative spherical lens and the fifth single negative spherical lens, and the ninth single positive spherical lens and the tenth single negative spherical lens are combined into an adhesive lens. The F.NO value of the large-clear-aperture industrial lens system reaches 1.0, the focal length is 25mm, the large-clear-aperture industrial lens system is suitable for application of 2/3 camera chips, has a simple structure, is low in cost and small in size, is in a dark environment, is not suitable for the field of lighting, can be popularized rapidly, the tenth single negative spherical lens adopts high-refractive-index glass, the eighth single positive spherical lens adopts low-dispersion-coefficient glass, and aberration in an optical system is effectively reduced.
Description
Technical Field
The invention relates to the technical field of lenses, in particular to a large clear aperture industrial lens system.
Background
In the machine vision system, the relative clear aperture value (F.NO) of the common optical lens is about 2.0, the larger clear aperture is only 1.4, and the detection of the condition that some environments are dark and unsuitable for polishing is difficult to meet the requirement.
Along with the high-speed growth of modern industrial production, the development of industrial detection is also more and more mature, the application environment is also more and more complex, and for some environments which are dark and are not suitable for polishing, the detection of a common lens is difficult to realize due to the small clear aperture.
The invention is designed mainly for solving the detection problem in some environments which are dark and unsuitable for polishing. The F.NO value of the invention reaches 1.0, the focal length is 25mm, and the invention is suitable for application of 2/3 camera chips. Is a common focal length segment and camera in the current market.
Disclosure of Invention
The present invention is directed to an industrial lens system with a large clear aperture, which solves the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the industrial lens system with large clear aperture comprises a first single positive spherical lens, a second single positive spherical lens, a third single negative spherical lens, a diaphragm, a fifth single negative spherical lens, a sixth single positive spherical lens, a seventh single positive spherical lens, an eighth single positive spherical lens, a ninth single positive spherical lens and a tenth single negative spherical lens, wherein the diaphragm is arranged between the third single negative spherical lens and the fifth single negative spherical lens, and the ninth single positive spherical lens and the tenth single negative spherical lens are combined into an adhesive lens.
As a further scheme of the invention: the first single positive spherical lens is a biconvex positive lens.
As still further aspects of the invention: the second single positive spherical lens is a convex-concave positive lens, and the opening direction faces the image surface.
As still further aspects of the invention: the third single negative spherical lens is a biconcave negative lens.
As still further aspects of the invention: the fifth single negative spherical lens is a concave-convex negative lens, and the opening direction is towards the object plane.
As still further aspects of the invention: the sixth single positive spherical lens is a convex-concave positive lens, and the opening direction is towards the object plane.
As still further aspects of the invention: the seventh single positive spherical lens is a biconvex spherical lens.
As still further aspects of the invention: the eighth single positive spherical lens is a biconvex spherical lens.
As still further aspects of the invention: the ninth single positive spherical lens is a convex-concave positive lens, and the opening direction faces the image surface.
As still further aspects of the invention: the tenth single negative spherical lens is a concave-convex negative lens, and the opening direction faces the image surface.
As still further aspects of the invention: the large clear aperture industrial lens system, wherein one group of optical systems satisfies the following conditional expression:
F.NO=1.0，EFL=25mm，TTL=50mm
wherein, F.NO is the relative aperture of the lens, EFL is the effective focal length of the lens, and TTL is the total optical length of the lens.
As still further aspects of the invention: the large clear aperture industrial lens system, wherein one group of optical systems satisfies the following conditional expression:
f/f1=0.57，f1=44.02mm
f/f2=0.73，f2=34.25mm
f/f3=-1.38，f3=-18.11mm
f/f4=-1.38，f4=-18.17mm
f/f5=0.65，f5=38.55mm
f/f6=1.01，f6=24.68mm
f/f7=0.48，f7=52.05mm
f/f8=0.36，f8=70.33mm
f/f9=-0.42，f9=-58.94mm
wherein f is the effective focal length of the lens, f1 is the focal length of the first single positive spherical lens, f2 is the focal length of the second single positive spherical lens, f3 is the focal length of the third single negative spherical lens, f4 is the focal length of the fifth single negative spherical lens, f5 is the focal length of the sixth single positive spherical lens, f6 is the focal length of the seventh single positive spherical lens, f7 is the focal length of the eighth single positive spherical lens, f8 is the focal length of the ninth single positive spherical lens, and f9 is the focal length of the tenth single negative spherical lens.
As still further aspects of the invention: the glass material of the large clear aperture industrial lens system satisfies the following conditions:
the first single positive sphere lens material satisfies: 1.7< Nd <1.85, 45< Vd <55
The second single positive sphere lens material satisfies: 1.7< Nd <1.85, 48< Vd <58
The third single negative spherical lens material satisfies: 1.65< Nd <1.8, 22< Vd <35
The fifth single negative spherical lens material satisfies: 1.65< Nd <1.8, 22< Vd <35
The sixth single positive sphere lens material satisfies: 1.7< Nd <1.85, 48< Vd <58
The seventh single positive sphere lens material satisfies: 1.7< Nd <1.85, 45< Vd <55
The eighth single positive sphere lens material satisfies: 1.55< Nd <1.7, 55< Vd <70
The ninth single positive sphere lens material satisfies: 1.7< Nd <1.85, 45< Vd <55
The tenth single negative spherical lens material satisfies: 1.75< Nd <1.95, 17< Vd <30.
Compared with the prior art, the invention has the beneficial effects that:
the F.NO value of the large-clear-aperture industrial lens system reaches 1.0, the focal length is 25mm, and the large-clear-aperture industrial lens system is suitable for application of a 2/3 camera chip, is a focal length section and a camera which are commonly used in the market at present, has a simple structure, low cost and small size, is in a dark environment, is not suitable for the field of polishing, can be rapidly popularized, the tenth single negative spherical lens is made of high-refractive-index glass, the eighth single positive spherical lens is made of low-dispersion-coefficient glass, aberration in an optical system is effectively reduced, the structure is simple, the manufacturing is convenient, the imaging effect is improved, and the manufacturing cost is reduced.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
FIG. 2 is a cross-sectional view of a first single positive sphere lens according to the present invention.
FIG. 3 is a cross-sectional view of a second single positive sphere lens according to the present invention.
FIG. 4 is a cross-sectional view of a third single negative spherical lens of the present invention.
FIG. 5 is a cross-sectional view of a fifth single negative spherical lens of the present invention.
Fig. 6 is a cross-sectional view of a sixth single positive spherical lens according to the present invention.
Fig. 7 is a cross-sectional view of a seventh single positive sphere lens according to the present invention.
FIG. 8 is a cross-sectional view of an eighth single positive sphere lens according to the present invention.
Fig. 9 is a cross-sectional view of a ninth single positive spherical lens according to the present invention.
Fig. 10 is a cross-sectional view of a tenth single negative spherical lens of the present invention.
In the figure: 1-a first single positive spherical lens, 2-a second single positive spherical lens, 3-a third single negative spherical lens, 4-diaphragm, 5-a fifth single negative spherical lens, 6-a sixth single positive spherical lens, 7-a seventh single positive spherical lens, 8-an eighth single positive spherical lens, 9-a ninth single positive spherical lens and 10-a tenth single negative spherical lens.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Referring to fig. 1, in an embodiment of the present invention, a large clear aperture industrial lens system includes a first single positive spherical lens 1, a second single positive spherical lens 2, a third single negative spherical lens 3, a diaphragm 4, a fifth single negative spherical lens 5, a sixth single positive spherical lens 6, a seventh single positive spherical lens 7, an eighth single positive spherical lens 8, a ninth single positive spherical lens 9 and a tenth single negative spherical lens 10, wherein the diaphragm 4 is disposed between the third single negative spherical lens 3 and the fifth single negative spherical lens 5, and the ninth single positive spherical lens 9 and the tenth single negative spherical lens 10 are combined into an adhesive lens.
Referring to fig. 1 and 2, the first single positive spherical lens 1 is a biconvex positive lens, R11 and R12 are radii of curvature of the front surface and the rear surface of the first single positive spherical lens 1, respectively, the dispersion coefficient Vd of the first single positive spherical lens 1 is 49.6, and the refractive index Nd is 1.77; the radius of curvature R11 of the front surface towards the object is 35< R11<50mm, the radius of curvature R12 of the rear surface towards the image is-200 < R12< -100mm, the core thickness d1 is 2.5< d1<4mm, the radius of curvature R11 of the front surface towards the object is 42.7mm, the radius of curvature R12 of the rear surface towards the image is-164.4 mm, and the core thickness d1 is 3.3mm.
Referring to fig. 1 and 3, the second single positive spherical lens 2 is a convex-concave positive lens, the opening direction is towards the image plane, R21 and R22 are the radii of curvature of the front surface and the back surface of the lens, respectively, the dispersion coefficient Vd of the second single positive spherical lens 2 is 52.3, and the refractive index Nd is 1.76; the radius of curvature R21 of the front surface facing the object is 13< R21<25mm, the radius of curvature R22 of the rear surface facing the image is 50< R22<65mm, the core thickness d3 is 3< d3<4.5mm, the radius of curvature R21 of the front surface facing the object is 18.4mm, the radius of curvature R22 of the rear surface facing the image is 58.2mm, the core thickness d3 is 3.7mm, and the distance d2 between the second single positive spherical lens 2 and the adjacent surface at the center of the first single positive spherical lens 1 is 5.48mm.
Referring to fig. 1 and 4, the third single negative spherical lens 3 is a biconcave negative lens, R31 and R32 are radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the third single negative spherical lens 3 is 29.5, and the refractive index Nd is 1.72; the radius of curvature R31 of the front surface facing the object is-170 < R31< -100mm, the radius of curvature R32 of the rear surface facing the image is 10< R32<20mm, the core thickness d5 is 1.8< d5<3mm, the radius of curvature R31 of the front surface facing the object is-134.3 mm, the radius of curvature R32 of the rear surface facing the image is 14.6mm, the core thickness d5 is 2.38mm, and the distance d4 between the third single negative spherical lens 3 and the adjacent surface at the center of the second single positive spherical lens 2 is 0.91mm.
Referring to fig. 1 and 5, the fifth single negative spherical lens 5 is a concave-convex negative lens, the opening direction is towards the object plane, R41 and R42 are the radii of curvature of the front surface and the back surface of the lens, respectively, the dispersion coefficient Vd of the fifth single negative spherical lens 5 is 29.5, and the refractive index Nd is 1.72; the radius of curvature R41 of the front surface facing the object space is-15 < R41< -10mm, the radius of curvature R22 of the rear surface facing the image space is-220 < R42< -150mm, the core thickness d8 is 3< d8<8mm, the radius of curvature R41 of the front surface facing the object space is-12.25 mm, the radius of curvature R42 of the rear surface facing the image space is-192.91 mm, the core thickness d8 is 1mm, a diaphragm 4 is arranged between the fifth single negative spherical lens 5 and the third single negative spherical lens 3, the distance d6 between the center of the third single negative spherical lens 3 and the diaphragm 4 is 3.6mm, and the distance d3 between the center of the fifth single negative spherical lens 5 and the diaphragm 4 is 4.16mm.
Referring to fig. 1 and 6, the sixth single positive spherical lens 6 is a convex-concave positive lens, the opening direction is towards the object plane, R51 and R52 are radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the sixth single positive spherical lens 6 is 52.3, and the refractive index Nd is 1.76; the radius of curvature R51 of the front surface facing the object side is-50 < R51< -25mm, the radius of curvature R52 of the rear surface facing the image side is-20 < R52< -10mm, the core thickness d6 is 2< d6<5mm, the radius of curvature R51 of the front surface facing the object side is-34.85 mm, the radius of curvature R52 of the rear surface facing the image side is-16.44 mm, the core thickness d10 is 2.83mm, and the distance d9 between the sixth single positive spherical lens 6 and the adjacent surface at the center of the fifth single negative spherical lens 5 is 0.75mm.
Referring to fig. 1 and 7, the seventh single positive spherical lens 7 is a biconvex positive lens, R61 and R62 are radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the seventh single positive spherical lens 7 is 49.6, and the refractive index Nd is 1.77; the radius of curvature R61 of the lens towards the front surface of the object is 100< R61<180mm, the radius of curvature R62 of the lens towards the rear surface of the image is-25 < R62< -20mm, the core thickness d12 is 3< d12<4mm, the radius of curvature R61 of the lens towards the front surface of the object is 147.2mm, the radius of curvature R62 of the lens towards the rear surface of the image is-21.77 mm, the core thickness d12 is 3.44mm, and the distance d11 between the seventh single positive spherical lens 7 and the adjacent surface at the center of the sixth single positive spherical lens 6 is 0.1mm.
Referring to fig. 1 and 8, the eighth single positive spherical lens 8 is a concave-convex positive lens, R71 and R72 are radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the eighth single positive spherical lens 8 is 63.4, and the refractive index Nd is 1.62; the radius of curvature R71 towards the front surface of the object is 22< R71<36mm, the radius of curvature R72 towards the rear surface of the image is 200< R72<350mm, the core thickness d14 is 2< d14<3mm, the radius of curvature R71 towards the front surface of the object is 29.1mm, the radius of curvature R72 towards the rear surface of the image is 285.8mm, the core thickness d14 is 2.57mm, and the distance d13 between the eighth single positive spherical lens 8 and the adjacent surface at the center of the seventh single positive spherical lens 7 is 0.1mm.
Referring to fig. 1 and 9, the ninth single positive spherical lens 9 is a convex-concave positive lens, the opening direction is towards the image plane, R81 and R82 are radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the ninth single positive spherical lens 9 is 49.6, and the refractive index Nd is 1.77; the radius of curvature R81 of the front surface facing the object side is 10< R81<20mm, the radius of curvature R82 of the rear surface facing the image side is 15< R82<25mm, the core thickness d16 is 2.5< d16<3.5mm, the radius of curvature R71 of the front surface facing the object side is 15.76mm, the radius of curvature R72 of the rear surface facing the image side is 20.31mm, the core thickness d16 is 3.03mm, and the distance d15 between the ninth single positive spherical lens 9 and the adjacent surface at the center of the eighth single positive spherical lens 8 is 0.1mm.
Referring to fig. 1 and 10, the tenth single negative spherical lens 10 is a biconvex negative lens, the opening direction is toward the image plane, R91 and R92 are the radii of curvature of the front surface and the rear surface of the lens, respectively, the dispersion coefficient Vd of the tenth single negative spherical lens 10 is 23.8, the refractive index Nd is 1.85, the radius of curvature R91 of the tenth single negative spherical lens 10 toward the front surface of the object side is 10< R91<16mm, the radius of curvature R92 of the tenth single negative spherical lens toward the rear surface of the image side is 15< R92<25mm, the core thickness d17 is 1.5< d17<2.5mm, the radius of curvature R91 of the tenth single negative spherical lens 10 toward the front surface of the object side is 20.31mm, the radius of curvature R92 of the tenth single negative spherical lens toward the rear surface of the image side is 13.82mm, the core thickness d17 is 1.96mm, and the tenth single negative spherical lens 10 and the ninth single positive spherical lens 9 are an adhesive lens set.
The large clear aperture industrial lens system, wherein a group of optical systems is characterized in that: the following conditional expression is satisfied:
F.NO=1.0，EFL=25mm，TTL=50mm
where f.no is the relative aperture of the lens, EFL is the effective focal length of the lens, and TTL is the total optical length of the lens (the length from the vertex of the first single lens to the imaging surface). Further, the large clear aperture industrial lens system, wherein one group of optical systems satisfies the following conditional expression:
f/f1=0.57，f1=44.02mm
f/f2=0.73，f2=34.25mm
f/f3=-1.38，f3=-18.11mm
f/f4=-1.38，f4=-18.17mm
f/f5=0.65，f5=38.55mm
f/f6=1.01，f6=24.68mm
f/f7=0.48，f7=52.05mm
f/f8=0.36，f8=70.33mm
f/f9=-0.42，f9=-58.94mm
where f is the effective focal length of the lens, f1 is the focal length of the first single positive spherical lens 1, f2 is the focal length of the second single positive spherical lens 2, f3 is the focal length of the third single negative spherical lens 3, f4 is the focal length of the fifth single negative spherical lens 5, f5 is the focal length of the sixth single positive spherical lens 6, f6 is the focal length of the seventh single positive spherical lens 7, f7 is the focal length of the eighth single positive spherical lens 8, f8 is the focal length of the ninth single positive spherical lens 9, and f9 is the focal length of the tenth single negative spherical lens 10.
The large clear aperture industrial lens system has the following glass materials:
the first single positive sphere lens 1 material satisfies: 1.7< Nd <1.85, 45< Vd <55
The second single positive sphere lens 2 material satisfies the following conditions: 1.7< Nd <1.85, 48< Vd <58
The third single negative spherical lens 3 material satisfies the following conditions: 1.65< Nd <1.8, 22< Vd <35
The fifth single negative spherical lens 5 material satisfies the following conditions: 1.65< Nd <1.8, 22< Vd <35
The sixth single positive sphere lens 6 material satisfies: 1.7< Nd <1.85, 48< Vd <58
The seventh single positive sphere lens 7 material satisfies: 1.7< Nd <1.85, 45< Vd <55
The eighth single positive sphere lens 8 material satisfies: 1.55< Nd <1.7, 55< Vd <70
The ninth single positive sphere lens 9 material satisfies: 1.7< Nd <1.85, 45< Vd <55
The tenth single negative spherical lens 10 material satisfies: 1.75< Nd <1.95, 17< Vd <30
According to the large-clear-aperture industrial lens system, the tenth single negative spherical lens 10 is made of high-refractive-index glass, the eighth single positive spherical lens 8 is made of low-dispersion-coefficient glass, aberration in an optical system is effectively reduced, the structure is simple, the manufacturing is convenient, the imaging effect is improved, and the manufacturing cost is reduced.
The invention is designed mainly for solving the detection problem in some environments which are dark and unsuitable for polishing. The F.NO value of the invention reaches 1.0, the focal length is 25mm, and the invention is suitable for application of 2/3 camera chips. Is a common focal length segment and camera in the current market.
The large-clear-aperture industrial lens system has the advantages of simple structure, low cost, small volume and dark environment, and can be rapidly popularized in the field of unsuitable lighting.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (1)
1. The large-clear-aperture industrial lens system is characterized by comprising a first single positive spherical lens (1), a second single positive spherical lens (2), a third single negative spherical lens (3), a diaphragm (4), a fifth single negative spherical lens (5), a sixth single positive spherical lens (6), a seventh single positive spherical lens (7), an eighth single positive spherical lens (8), a ninth single positive spherical lens (9) and a tenth single negative spherical lens (10), wherein the diaphragm (4) is arranged between the third single negative spherical lens (3) and the fifth single negative spherical lens (5), and the ninth single positive spherical lens (9) and the tenth single negative spherical lens (10) are combined into an adhesive lens;
the first single positive spherical lens (1) is a biconvex positive lens, R11 and R12 are respectively the curvature radiuses of the front surface and the rear surface of the first single positive spherical lens (1), the dispersion coefficient Vd of the first single positive spherical lens (1) is 49.6, and the refractive index Nd is 1.77; the radius of curvature R11 of the front surface facing the object space is 35< R11<50mm, the radius of curvature R12 of the rear surface facing the image space is-200 < R12< -100mm, and the core thickness d1 is 2.5< d1<4mm; the second single positive spherical lens (2) is a convex-concave positive lens, the opening direction faces the image surface, R21 and R22 are the curvature radiuses of the front surface and the rear surface of the lens respectively, the dispersion coefficient Vd of the second single positive spherical lens (2) is 52.3, and the refractive index Nd is 1.76; the radius of curvature R21 of the front surface facing the object space is 13< R21<25mm, the radius of curvature R22 of the rear surface facing the image space is 50< R22<65mm, and the core thickness d3 is 3< d3<4.5mm;
the third single negative spherical lens (3) is a biconcave negative lens, R31 and R32 are respectively the curvature radiuses of the front surface and the rear surface of the lens, the dispersion coefficient Vd of the third single negative spherical lens (3) is 29.5, and the refractive index Nd is 1.72; the radius of curvature R31 of the front surface facing the object space is-170 < R31< -100mm, the radius of curvature R32 of the rear surface facing the image space is 10< R32<20mm, and the core thickness d5 is 1.8< d5<3mm; the fifth single negative spherical lens (5) is a convex-concave negative lens, the opening direction faces the object plane, R41 and R42 are the curvature radiuses of the front surface and the rear surface of the lens respectively, the dispersion coefficient Vd of the fifth single negative spherical lens (5) is 29.5, and the refractive index Nd is 1.72; the radius of curvature R41 of the front surface facing the object space is-15 < R41< -10mm, the radius of curvature R22 of the rear surface facing the image space is-220 < R42< -150mm, and the core thickness d8 is 3< d8<8mm;
the sixth single positive spherical lens (6) is a convex-concave positive lens, the opening direction is towards the object plane, R51 and R52 are respectively the curvature radiuses of the front surface and the rear surface of the lens, the dispersion coefficient Vd of the sixth single positive spherical lens (6) is 52.3, and the refractive index Nd is 1.76; the radius of curvature R51 of the front surface facing the object space is-50 < R51< -25mm, the radius of curvature R52 of the rear surface facing the image space is-20 < R52< -10mm, and the core thickness d6 is 2< d6<5mm;
the seventh single positive spherical lens (7) is a biconvex spherical lens, R61 and R62 are respectively the curvature radiuses of the front surface and the rear surface of the lens, the dispersion coefficient Vd of the seventh single positive spherical lens (7) is 49.6, and the refractive index Nd is 1.77; the radius of curvature R61 of the front surface facing the object space is 100< R61<180mm, the radius of curvature R62 of the rear surface facing the image space is-25 < R62< -20mm, and the core thickness d12 is 3< d12<4mm;
the eighth single positive spherical lens (8) is a biconvex spherical lens, R71 and R72 are respectively the curvature radiuses of the front surface and the rear surface of the lens, the dispersion coefficient Vd of the eighth single positive spherical lens (8) is 63.4, and the refractive index Nd is 1.62; the radius of curvature R71 of the front surface towards the object side is 22< R71<36mm, the radius of curvature R72 of the rear surface towards the image side is 200< R72<350mm, and the core thickness d14 is 2< d14<3mm;
the ninth single positive spherical lens (9) is a convex and concave positive lens, the opening direction faces the image plane, R81 and R82 are the curvature radiuses of the front surface and the rear surface of the lens respectively, the dispersion coefficient Vd of the ninth single positive spherical lens (9) is 49.6, and the refractive index Nd is 1.77; the radius of curvature R81 of the front surface facing the object side is 10< R81<20mm, the radius of curvature R82 of the rear surface facing the image side is 15< R82<25mm, and the core thickness d16 is 2.5< d16<3.5mm;
the tenth single negative spherical lens (10) is a convex-concave negative lens, the opening direction faces the image surface, R91 and R92 are the curvature radiuses of the front surface and the back surface of the lens respectively, the chromatic dispersion coefficient Vd of the tenth single negative spherical lens (10) is 23.8, the refractive index coefficient Nd is 1.85, the curvature radius R91 of the tenth single negative spherical lens facing the front surface of the object space is 10< R91<16mm, the curvature radius R92 of the tenth single negative spherical lens facing the back surface of the image space is 15< R92<25mm, and the core thickness d17 is 1.5< d17<2.5mm;
one group of optical systems of the large clear aperture industrial lens system meets the following conditional expression:
F.NO=1.0，EFL=25mm，TTL=50mm
wherein, F.NO is the relative aperture of the lens, EFL is the effective focal length of the lens, and TTL is the optical total length of the lens;
one group of optical systems of the large clear aperture industrial lens system meets the following conditional expression:
f/f1=0.57，f1=44.02mm
f/f2=0.73，f2=34.25mm
f/f3=-1.38，f3=-18.11mm
f/f4=-1.38，f4=-18.17mm
f/f5=0.65，f5=38.55mm
f/f6=1.01，f6=24.68mm
f/f7=0.48，f7=52.05mm
f/f8=0.36，f8=70.33mm
f/f9=-0.42，f9=-58.94mm
wherein f is the effective focal length of the lens, f1 is the focal length of the first single positive spherical lens (1), f2 is the focal length of the second single positive spherical lens (2), f3 is the focal length of the third single negative spherical lens (3), f4 is the focal length of the fifth single negative spherical lens (5), f5 is the focal length of the sixth single positive spherical lens (6), f6 is the focal length of the seventh single positive spherical lens (7), f7 is the focal length of the eighth single positive spherical lens (8), f8 is the focal length of the ninth single positive spherical lens (9), and f9 is the focal length of the tenth single negative spherical lens (10).
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| WO2021128384A1 (en) * | 2019-12-28 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Optical camera lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011133793A (en) * | 2009-12-25 | 2011-07-07 | Ricoh Optical Industries Co Ltd | Imaging lens system |
| CN102401984A (en) * | 2010-09-08 | 2012-04-04 | 三星电子株式会社 | Telephoto lens system |
| CN206557460U (en) * | 2016-09-30 | 2017-10-13 | 广州长步道光电科技有限公司 | A kind of short 4K line drawings of the low operating distance of small volume cost sweep camera lens |
| CN209327667U (en) * | 2019-01-28 | 2019-08-30 | 广州长步道光电科技有限公司 | A kind of big clear aperature industrial lens system |
-
2019
- 2019-01-28 CN CN201910079497.3A patent/CN110542979B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011133793A (en) * | 2009-12-25 | 2011-07-07 | Ricoh Optical Industries Co Ltd | Imaging lens system |
| CN102401984A (en) * | 2010-09-08 | 2012-04-04 | 三星电子株式会社 | Telephoto lens system |
| CN206557460U (en) * | 2016-09-30 | 2017-10-13 | 广州长步道光电科技有限公司 | A kind of short 4K line drawings of the low operating distance of small volume cost sweep camera lens |
| CN209327667U (en) * | 2019-01-28 | 2019-08-30 | 广州长步道光电科技有限公司 | A kind of big clear aperature industrial lens system |
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| CN110542979A (en) | 2019-12-06 |
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Address after: No. 8, Hongda Road, Yuhua District, Changsha City, 410000, Hunan Province Applicant after: Hunan Chiopt Optotech Co.,Ltd. Address before: 511442 2nd floor, No.1 Workshop, Jinshan Industrial Park, pengdizhuang, lirendong village, Nancun Town, Panyu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU CHIOPT OPTOTECH Co.,Ltd. |
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Effective date of registration: 20230724 Address after: No. 8, Hongda Road, Hongtang Village, Tongsheng Street, Yuhua District, Changsha City, 410000, Hunan Province Applicant after: HUNAN CHIOPT OPTICAL TECHNOLOGY Co.,Ltd. Address before: No. 8, Hongda Road, Yuhua District, Changsha City, 410000, Hunan Province Applicant before: Hunan Chiopt Optotech Co.,Ltd. |
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