CN112526734B

CN112526734B - Super-starlight high-definition optical zoom lens

Info

Publication number: CN112526734B
Application number: CN202011553981.4A
Authority: CN
Inventors: 柳振全; 丁翊轩; 李梦幻; 丁松涛
Original assignee: Henan Yixuan Photoelectric Technology Co
Current assignee: Henan Yixuan Photoelectric Technology Co
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2023-01-06
Anticipated expiration: 2040-12-24
Also published as: CN112526734A

Abstract

The invention provides a super-starlight high-definition optical zoom lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens, a fifteenth lens, a sixteenth lens, a seventeenth lens and a photosensitive chip which are sequentially arranged from an object plane to an image plane along an optical axis. According to the invention, through the design that the lens adopts the glass aspheric lens, the parameters of the glass aspheric lens are adopted for correction, the seventeen lenses are matched for use, and reasonable materials are selected for partial positive and negative optical focal spherical lenses, so that the number of the lens lenses can be reduced from 20 to 17, the space of 3 lenses is reduced, the space occupied by optical components is greatly reduced, and the original use parameters of the lens can be maintained under the condition that the number of the lens lenses is reduced, so that the FNo of the lens reaches 1.0.

Description

Super-starlight high-definition optical zoom lens

Technical Field

The invention relates to the technical field of optical systems, in particular to an ultra-star high-definition optical zoom lens.

Background

In recent years, with the continuous development of the optical industry, the requirements of various optical lenses are changing continuously, but with the development of the market 5G and the appearance of the internet of things, some new industries, such as internal intelligent sensors, mobile terminals, industrial systems, building control systems, home intelligent facilities, video monitoring systems, etc., have evolved, and also technical innovation in the safety and medical field, such as real-time online monitoring, location tracing, alarm linkage, scheduling command, plan management, remote control, security protection, remote maintenance, online upgrade, statistical reports, decision support, (centrally displayed Cockpit Dashboard), etc., management and service functions, and new technical requirements are also emerging in continuous innovation: the black light level high-definition lens and the infrared confocal lens can reduce cost and improve the stability of the lens, and become bright points which are continuously pursued by people.

At present, the traditional lens has the following defects: the aperture is a fixed aperture, some apertures are manually zoomed, the optical FNo is almost 1.4, in addition, the requirement of a black light high-definition lens is generally required to be met, the lens does not run into focus under the conditions of high temperature and low temperature (high temperature plus 80 ℃ and low temperature minus 40 ℃), the total number of glass lenses reaches more than 20, the cost is high, the yield is not ideal, the mass production is difficult, and the effect is not ideal in the high-end field, so that the problem is solved by the invention of the ultra-star high-definition optical zoom lens.

Disclosure of Invention

The invention aims to provide an ultra-star high-definition optical zoom lens, aiming at solving the problems in the background art.

In order to achieve the above object, the superstarlight high definition optical zoom lens of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens, a fifteenth lens, a sixteenth lens, a seventeenth lens and a photosensitive chip sequentially arranged along an optical axis from an object plane to an image plane; the sixteenth lens is a glass aspheric lens, and the rest are glass spherical lenses; the focal lengths of the first lens to the seventeenth lens are negative, positive, negative and negative from left to right in sequence, positive, negative, positive, positive, negative.

Preferably, a diaphragm for limiting the light beam is arranged between the seventh lens and the eighth lens.

Preferably, the eleventh lens and the twelfth lens adopt high-refractive-index lenses.

Preferably, the ninth lens, the fourteenth lens and the sixteenth lens adopt ultra-low dispersion lenses.

Preferably, the first lens, the fourth lens, the thirteenth lens and the seventeenth lens are all negative meniscus lenses, the second lens, the third lens, the seventh lens and the twelfth lens are all positive meniscus lenses, the fifth lens, the sixth lens, the ninth lens, the tenth lens and the eleventh lens are biconcave lenses, and the eighth lens, the ninth lens, the fourteenth lens, the fifteenth lens and the sixteenth lens are biconvex lenses.

Preferably, the size of the photosensitive chip is 1/1.8", and the resolution of the photosensitive chip is 800 ten thousand pixels.

Preferably, the first lens and the second lens, the sixth lens and the seventh lens, the ninth lens and the tenth lens, and the eleventh lens and the twelfth lens are combined to form a cemented lens for eliminating chromatic aberration.

Preferably, the second lens, the third lens, the fifth lens, the ninth lens and the fourteenth lens are made of FCD 515.

The invention has the beneficial effects that:

1. according to the invention, through the design that the lens adopts the glass aspheric lens, the parameters of the glass aspheric lens are corrected, the seventeen lenses are matched for use, and reasonable materials are selected for partial positive and negative optical focal spherical lenses, on one hand, the number of the lens lenses can be reduced from the previous 20 to 17, the space of 3 lenses is reduced, the space occupied by optical components is greatly reduced, on the other hand, the original use parameters of the lens can be kept under the state that the number of the lens lenses is reduced, and the relative aperture of the lens can be reduced, so that the FNo of the lens reaches 1.0.

2. According to the invention, the tenth lens and the twelfth lens are high-refractive-index lenses, the ninth lens, the fourteenth lens and the sixteenth lens are ultra-low-dispersion lenses, and the sixteenth lens is an aspheric lens, so that aberrations such as spherical aberration, coma aberration, astigmatism and field curvature can be effectively corrected, chromatic aberration and secondary spectrum are effectively corrected, the resolution quality of the lens is improved, and the resolution power of more than 800 ten thousand is achieved.

Drawings

FIG. 1 is a schematic view of a super-star high-end high-definition zoom optical lens according to the present invention;

FIG. 2 is a spherical aberration curve chart of the ultra-star high-end high-definition zoom optical lens of the present invention;

FIG. 3 is a graph showing the curvature of field and distortion of the ultra-star high-end high-definition zoom optical lens according to the present invention;

FIG. 4 is a chromatic aberration curve diagram of the ultra-star high-end high-definition zoom optical lens of the present invention;

fig. 5 is a MTF graph of the superstar high-end high-definition zoom optical lens of the present invention.

In the figure: 1. a first lens; 2. a second lens; 3. a third lens; 4. a fourth lens; 5. a fifth lens; 6. a sixth lens; 7. a seventh lens; 8. an eighth lens; 9. a ninth lens; 10. a tenth lens; 11. an eleventh lens; 12. a twelfth lens; 13. a thirteenth lens; 14. a fourteenth lens; 15. a fifteenth lens element; 16. a sixteenth lens; 17. a seventeenth lens; 18. a photosensitive chip; 19. and (6) a diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the superstarlight high definition optical zoom lens includes, in order from an object plane to an image plane along an optical axis, a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, a ninth lens 9, a tenth lens 10, an eleventh lens 11, a twelfth lens 12, a thirteenth lens 13, a fourteenth lens 14, a fifteenth lens 15, a sixteenth lens 16, a seventeenth lens 17, and a light-sensing chip 18; the sixteenth lens 16 is a glass aspheric lens, and the rest are glass spherical lenses; <xnotran> 1 17 , , , , , , , , , , , , , , , , , , , 20 17 , 3 , , , , FNo. 1.0. </xnotran>

In the present embodiment, a diaphragm 19 for limiting the light beam is provided between the seventh lens 7 and the eighth lens 8.

In this embodiment, the eleventh lens 11 and the twelfth lens 12 adopt high refractive index lenses, which can effectively correct spherical aberration and coma aberration, reduce the spherical aberration and coma aberration of the optical system, and effectively reduce the spherical aberration and coma aberration of the lens.

In this embodiment, the ninth lens element 9, the fourteenth lens element 14 and the sixteenth lens element 16 are ultra-low dispersion lenses, and can effectively correct aberrations such as spherical aberration, coma aberration, astigmatism and field curvature.

In the present embodiment, the first lens element 1, the fourth lens element 4, the thirteenth lens element 13, and the seventeenth lens element 17 are all negative meniscus lens elements, the second lens element 2, the third lens element 3, the seventh lens element 7, and the twelfth lens element 12 are all positive meniscus lens elements, the fifth lens element 5, the sixth lens element 6, the ninth lens element 9, the tenth lens element 10, and the eleventh lens element 11 are biconcave lens elements, and the eighth lens element 8, the ninth lens element 9, the fourteenth lens element 14, the fifteenth lens element 15, and the sixteenth lens element 16 are biconvex lens elements.

In this embodiment, the size of the photo sensor 18 is 1/1.8", and the resolution of the photo sensor 18 is 800 ten thousand pixels.

In the present embodiment, the first lens 1 and the second lens 2, the sixth lens 6 and the seventh lens 7, the ninth lens 9 and the tenth lens 10, and the eleventh lens 11 and the twelfth lens 12 are combined to form a cemented lens for eliminating chromatic aberration.

In this embodiment, the second lens 2, the third lens 3, the fifth lens 5, the ninth lens 9, and the fourteenth lens 14 are made of FCD515, so that the temperature drift of the optical system can be controlled within a reasonable range, and a stable mechanical structure is selected for use in cooperation, so that high and low temperatures are achieved without being out of focus.

In the optical lens of the present invention, the first lens 1 is a high refractive index lens having negative optical power, the second lens 2 is an ultra-low dispersion lens having positive optical power, and the first lens 1 and the second lens 2 are cemented to correct spherical aberration and chromatic aberration.

The third lens 3 is an ultra-low dispersion lens with positive focal power, and the third lens 3 and the first and second lenses converge light together, and simultaneously reduce the generation of chromatic aberration.

The fourth lens 4 has a negative-power low-dispersion lens.

The fifth lens 5 has a negative-power ultra-low dispersion lens.

The sixth lens 6 is an ultra-low dispersion lens with negative focal power, the seventh lens 7 is a high refractive index low dispersion lens with positive focal power, the sixth lens 6 and the seventh lens 7 are used in a gluing mode, the chromatic aberration of the group and the correction of a secondary spectrum can be further reduced, the fourth lens 4, the fifth lens 5, the sixth lens 6 and the seventh lens 7 form a variable power group with negative focal power, the variable power group, the fifth lens 5, the sixth lens 6 and the seventh lens 7 are combined together to correct monochromatic aberration, meanwhile, the ultra-low dispersion material is used for reducing the introduction of chromatic aberration to the maximum extent.

The eighth lens 8 has a positive power lens, and converges light of the front lens.

The ninth lens 9 has a positive power ultra-low dispersion lens, the tenth lens 10 has a negative power lens, and the ninth lens 9 and the tenth lens 10 are used by being cemented for correcting spherical aberration and chromatic aberration.

The eleventh lens 11 has a negative focal power high refractive index lens, the twelfth lens 12 has a positive focal power high refractive index lens, and the eleventh lens 11 and the twelfth lens 12 are used in a cemented manner, so that spherical aberration and coma aberration of an optical system are reduced, and the spherical aberration and the coma aberration of the lens are effectively reduced.

The thirteenth lens 13 has a negative power lens, the fourteenth lens 14 has a positive power ultra-low dispersion lens, and the thirteenth lens 13 and the fourteenth lens 14 are cemented to correct spherical coma aberration and chromatic aberration.

The fifteenth lens 15 has a positive ultra-low dispersion lens, and converges the light of the front lens.

The sixteenth lens 16 has a positive power ultra-low dispersion lens, and the surface of the lens is an even aspheric surface, which can degrade the chromatic aberration generated when the lens converges light, and the aspheric surface can finely correct the aberration of incident light.

The seventeenth lens 17 has a negative power lens and is capable of correcting curvature of field and other residual aberrations.

In the following, a practical design example is given, in which the field angle is W:46 degrees, the T:11.4 degrees, the resolution is 800 ten thousand pixels, the total optical length is within 113mm, and the lens normally operates in the environment of high and low temperature (high temperature +80 ℃, low temperature-40 ℃):

TABLE 1 System data

Noodle number	Type of noodle	Radius of curvature/mm	Thickness/mm	Material	conic
						OBJ	STANDARD	infinity	infinity
1	STANDARD	88.77	1.80	H-ZF52
						2	STANDARD	51.62	8.18	FCD515
3	STANDARD	infinity	0.10
						4	STANDARD	45.91	7.16	FCD515
5	STANDARD	245.32	0.60
						6	STANDARD	57.49	0.80	H-QK3L
7	STANDARD	26.05	3.23
						8	STANDARD	-67.85	0.80	FCD515
9	STANDARD	15.93	4.31
						10	STANDARD	-31.06	1.76	H-QK3L
11	STANDARD	20.60	3.43	H-ZLAF52
						12	STANDARD	-198.70	31.36
STO	STANDARD	infinity	0.20
						14	STANDARD	36.64	3.54	H-LAF3B
15	STANDARD	-78.90	0.10
						16	STANDARD	23.18	4.10	FCD515
17	STANDARD	-57.41	0.80	H-ZF52
						18	STANDARD	51.87	2.66
19	STANDARD	-24.55	0.80	H-QF50A
						20	STANDARD	14.51	3.02	H-ZF88
21	STANDARD	22.14	4.30
						22	STANDARD	29.87	0.75	H-ZF52
23	STANDARD	13.20	6.03	FCD515
						24	STANDARD	-48.70	0.10
25	STANDARD	19.30	5.09	H-LAF3B
						26	STANDARD	-66.85	0.10
27	EVENASPH	19.70	4.12	H-FK61	1.408
						28	EVENASPH	-42.09	0.10		-0.572
29	STANDARD	-236.50	0.80	H-ZBAF4
						30	STANDARD	13.78

TABLE 2 aspherical surface coefficient α ₂ -α ₆

Numbering	a2	a3	a4	a5	a6
						27	-1.50E-05	-5.64E-07	8.49E-09	-1.67E-10	1.05E-12
28	7.41E-05	-1.91E-06	5.02E-08	-1.04E-09	1.15E-11

In the above tables 1 and 2

The

surface numbers

1, 2 and 3 respectively indicate the first surface, the second surface and the third surface of the first lens 1 and the second lens 2;

surface numbers 4 and 5 respectively denote a first surface and a second surface of the third lens 3;

surface numbers 6 and 7 respectively denote a first surface and a second surface of the fourth lens 4;

surface numbers 8 and 9 respectively denote a first surface and a second surface of the fifth lens 5;

the

surface numbers

10, 11, and 12 respectively indicate the first surface, the second surface, and the third surface of the sixth lens 6 and the seventh lens 7;

surface numbers 14 and 15 respectively denote a first surface and a second surface of the eighth lens 8;

surface numbers

16, 17, and 18 respectively denote first, second, and third surfaces of the ninth lens 9 and the tenth lens 10;

surface numbers 19, 20, and 21 respectively indicate first, second, and third surfaces of the eleventh lens 11 and the twelfth lens 12;

surface numbers 22, 23, and 24 respectively denote first, second, and third surfaces of the thirteenth lens 13 and the fourteenth lens 14;

surface numbers 25 and 26 respectively denote a first surface and a second surface of the fifteenth lens 15;

the surface numbers 27 and 28 respectively denote the first surface and the second surface of the sixteenth lens 16;

surface numbers 29 and 30 respectively denote a first surface and a second surface of the seventeenth lens 17;

the first surface refers to a surface facing the object surface side, the second surface refers to a surface facing the image surface, and the third surface is a surface shared by the two lenses.

By adopting the scheme, the spherical aberration curve, the field curvature and distortion curve, the chromatic aberration curve and the MTF curve of the optical lens are respectively shown in the figures 2, 3, 4 and 5, and as can be seen from the figure 2, the spherical aberration of the optical zoom lens is corrected to be within +/-0.02 mm, the spherical aberration is corrected well within the spectral bandwidth, and therefore the smoothness of a real shot image of the lens can be improved. As can be seen from fig. 3, by using the glass aspheric lens and the high refractive index lens, astigmatism and curvature of field can be corrected to a suitable range, so that the resolution in the meridional direction can be close to that in the sagittal direction. As can be seen from FIG. 4, the vertical axis chromatic aberration, the relative vertical axis chromatic aberration of the f light, the d light and the c light within 2.5 μm can satisfy the requirement of the resolution quality of the lens (FIG. 3); as can be seen from FIG. 5, the MTF curve shows excellent resolution, and the spatial frequency of 160cycles/mm has high sharpness within the central field and 0.7 field.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a superstarlight level high definition optics zoom lens which characterized in that: the optical lens comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5), a sixth lens (6), a seventh lens (7), an eighth lens (8), a ninth lens (9), a tenth lens (10), an eleventh lens (11), a twelfth lens (12), a thirteenth lens (13), a fourteenth lens (14), a fifteenth lens (15), a sixteenth lens (16), a seventeenth lens (17) and a photosensitive chip (18) which are arranged along an optical axis from an object plane to an image plane in sequence; the sixteenth lens (16) is a glass aspheric lens, and the rest are glass spherical lenses; the focal lengths of the first lens (1) to the seventeenth lens (17) are negative, positive, negative and negative from left to right in sequence, positive, negative, positive, positive, negative;

the center thicknesses of the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10), the eleventh lens (11), the twelfth lens (12), the thirteenth lens (13), the fourteenth lens (14), the fifteenth lens (15), the sixteenth lens (16) and the seventeenth lens (17) are respectively 1.8mm, 8.18mm, 7.16mm, 0.8mm, 1.76mm, 3.43mm, 3.54mm, 4.1mm, 0.8mm, 3.02mm, 0.75mm, 6.03mm, 5.09mm, 4.12mm and 0.8mm;

the second lens (2) and the third lens (3), the third lens (3) and the fourth lens (4), the fourth lens (4) and the fifth lens (5), the fifth lens (5) and the sixth lens (6), the eighth lens (8) and the ninth lens (9), the tenth lens (10) and the eleventh lens (11), the twelfth lens (12) and the thirteenth lens (13), the fourteenth lens (14) and the fifteenth lens (15), the fifteenth lens (15) and the sixteenth lens (16), and the sixteenth lens (16) and the seventeenth lens (17) have a distance of 0.1mm, 0.6mm, 3.23mm, 4.31mm, 0.1mm, 2.66mm, 4.3mm, 0.1mm, respectively;

the curvature radiuses of the object plane sides of the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10), the eleventh lens (11), the twelfth lens (12), the thirteenth lens (13), the fourteenth lens (14), the fifteenth lens (15), the sixteenth lens (16) and the seventeenth lens (17) are 88.77mm, 51.62mm, 45.91mm, 57.49mm, -67.85mm, -31.06mm, 20.6mm, 36.64mm, 23.18mm, -57.41mm, -24.55mm, 14.51mm, 29.87mm, 13.2mm, 19.3mm, 19.7mm and-236.5 mm respectively;

the curvature radiuses of the lens sides of the first lens (1), the third lens (3), the fourth lens (4), the fifth lens (5), the sixth lens (6), the seventh lens (7), the eighth lens (8), the ninth lens (9), the tenth lens (10), the eleventh lens (11), the twelfth lens (12), the thirteenth lens (13), the fourteenth lens (14), the fifteenth lens (15), the sixteenth lens (16) and the seventeenth lens (17) are respectively 51.62mm, 245.32mm, 26.05mm, 15.93mm, 20.6mm, -198.7mm, -78.9mm, -57.41mm, 57.87mm, 14.51mm, 22.14mm, 13.2mm, -48.7mm, -66.85mm, -42.09mm and 13.78mm.

2. The superstar high-definition optical zoom lens according to claim 1, characterized in that: and a diaphragm (19) used for limiting the light beam is arranged between the seventh lens (7) and the eighth lens (8).

3. The superstar high-definition optical zoom lens of claim 1, wherein: the eleventh lens (11) and the twelfth lens (12) adopt high-refractive-index lenses.

4. The superstar high-definition optical zoom lens according to claim 1, characterized in that: the ninth lens (9), the fourteenth lens (14) and the sixteenth lens (16) adopt ultra-low dispersion lenses.

5. The superstar high-definition optical zoom lens according to claim 1, characterized in that: the first lens (1), the fourth lens (4), the thirteenth lens (13) and the seventeenth lens (17) are all negative meniscus lenses, the second lens (2), the third lens (3), the seventh lens (7) and the twelfth lens (12) are all in a positive meniscus shape, the fifth lens (5), the sixth lens (6), the ninth lens (9), the tenth lens (10) and the eleventh lens (11) are biconcave lenses, and the eighth lens (8), the ninth lens (9), the fourteenth lens (14), the fifteenth lens (15) and the sixteenth lens (16) are biconvex lenses.

6. The superstar high-definition optical zoom lens according to claim 1, characterized in that: the size of the photosensitive chip (18) is 1/1.8', and the resolution of the photosensitive chip (18) is 800 ten thousand pixels.

7. The superstar high-definition optical zoom lens according to claim 1, characterized in that: the first lens (1) and the second lens (2), the sixth lens (6) and the seventh lens (7), the ninth lens (9) and the tenth lens (10), and the eleventh lens (11) and the twelfth lens (12) are combined to form a cemented lens for eliminating chromatic aberration.

8. The superstar high-definition optical zoom lens according to claim 1, characterized in that: the second lens (2), the third lens (3), the fifth lens (5), the ninth lens (9) and the fourteenth lens (14) are all made of FCD515 materials.