CN109143525B - Wide-spectrum low-distortion optical athermalized lens and application method thereof - Google Patents
Wide-spectrum low-distortion optical athermalized lens and application method thereof Download PDFInfo
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- CN109143525B CN109143525B CN201811286482.6A CN201811286482A CN109143525B CN 109143525 B CN109143525 B CN 109143525B CN 201811286482 A CN201811286482 A CN 201811286482A CN 109143525 B CN109143525 B CN 109143525B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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Abstract
The invention provides a wide-spectrum low-distortion optical athermalization lens and a use method thereof, wherein a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconcave negative lens, a second biconvex positive lens, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens, a fourth meniscus negative lens, a fourth biconvex positive lens and a second biconcave negative lens are sequentially arranged in a lens shell from an object space to an image space, the lens has a relative aperture of 1/1.2, the chromatic aberration of 450 nm-950 nm wide wave band is well corrected, the imaging quality is good, the MTF is more than 0.6 at a 50lp characteristic frequency, and the distortion is less than 0.8%.
Description
Technical Field
The invention relates to a broad-spectrum low-distortion optical athermalized lens and a use method thereof.
Background
The optical lens is widely used in various fields as an 'eye' of a detection system, and is different from an intelligent automatic adjusting optical system such as a human eye, and the use of a common optical lens is easily affected by the surrounding environment, particularly the temperature. When environmental factors such as temperature and the like change, many parameters of the optical system such as surface shape, interval, thickness, material refractive index and the like can change, so that the optical system is out of focus, imaging becomes fuzzy, and the application of the lens in extreme environments such as desert, space environment and the like is limited.
The athermalization design enables the optical system to keep the focal length, the image quality unchanged or little change in a larger temperature range through a special design or a certain compensation method, and three methods of electronic active type, mechanical passive type and optical passive type are mainly adopted at present. The electronic active type is precisely controlled by using a temperature sensor, a feedback circuit, a motor and the like, and the method needs an additional circuit module, has a complex structure and high cost, and is not beneficial to light miniaturization; the mechanical passive type is to use two mechanical elements with different expansion coefficients to naturally expand and contract to obtain motion for compensation, and the method has low reliability and high weight; the optical passive type is to compensate the defocusing amount by selecting optical material combinations with different thermal characteristics, and the method does not introduce moving parts, has high reliability, does not need a circuit, and has simple structure and light weight. However, the design of optical athermalization limits the selection of some optical materials, improves the difficulty of aberration correction to a certain extent, and further increases the design difficulty for a broadband optical system with large relative aperture and difficult chromatic aberration correction, and influences the improvement of the imaging quality of the optical system.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is to provide the broad-spectrum low-distortion optical athermalization lens which has a relative aperture of 1/1.2 and good imaging quality in the wave band range of 450-950 nm and has an optical athermalization effect.
The specific embodiments of the invention are: the wide-spectrum low-distortion optical athermalization lens comprises a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconcave negative lens, a second biconvex positive lens, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens, a fourth meniscus negative lens, a fourth biconvex positive lens and a second biconcave negative lens which are sequentially arranged in a lens shell from an object space to an image space.
Further, the first biconvex negative lens and the second biconvex positive lens are closely connected to form a first bonding group, the third biconvex positive lens and the fourth meniscus negative lens are closely connected to form a second bonding group, and the fourth biconvex positive lens and the second biconvex negative lens are closely connected to form a third bonding group.
Further, the third gluing group is a focusing group, and a focusing mechanism for driving the third gluing group to move forwards and backwards is arranged in the lens shell.
Further, the air space between the first meniscus negative lens and the first biconvex positive lens is 2.27mm, the air space between the first biconvex positive lens and the second meniscus negative lens is 1.86mm, the air space between the second meniscus negative lens and the first bonding group is 6.60 mm, the air space between the first bonding group and the third biconvex positive lens is 0.13mm, the air space between the third biconvex positive lens and the third meniscus negative lens is 1.17 mm, the air space between the third meniscus negative lens and the second bonding group is 1.38 mm, and the air space between the second bonding group and the third bonding group is 0.23 mm.
Further, the focal length f' =20mm of the optical system formed by the lenses has a relative aperture of 1/1.2 and an image plane diameter of 8.8mm.
Further, the second biconvex positive lens in the first bonding group adopts ultra-low dispersion glass H-FK61.
Further, the lens housing comprises a main lens barrel, a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconvex negative lens and a second biconvex positive lens are closely connected to form a first bonding group, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens and a fourth meniscus negative lens are closely connected to form a second bonding group, the second bonding group is sequentially arranged in the main lens barrel, a pressing ring for limiting the first meniscus negative lens is fixed at one end of the main lens barrel, an end outside the pressing ring is provided with a sealing cover fixedly connected with the main lens barrel, an AB spacer is arranged between the first meniscus negative lens and the first biconvex positive lens in the main lens barrel, a first biconvex negative lens and the second biconvex negative lens are closely connected to form a first bonding group, a CD spacer is arranged between the second biconvex negative lens and the second biconvex positive lens, an EF (electric field effect lens) is closely connected to the third biconvex negative lens, and a third biconvex negative lens is closely connected to form a first bonding group and a third biconvex positive lens, and a first negative spacer ring, and a third biconvex negative lens are closely connected to form a second spacer ring, and a second positive lens are closely connected to form a second spacer ring.
Further, one side of the lens cone, which is far away from the end cover, is fixedly provided with a focusing mechanism, the focusing mechanism mainly comprises a focusing lens cone, a focusing cam and a focusing motor, the focusing lens cone is sleeved in the main lens cone, the focusing cam is sleeved outside the main lens cone, the focusing cam is provided with a linear curve groove, a focusing guide pin is embedded in the curve groove, the outer wall of the main lens cone is provided with a limiting groove which is arranged along the radial direction, the focusing guide pin is fixed on the focusing lens cone through one end of a thread, the other end of the focusing guide pin penetrates through the limiting groove on the outer wall of the main lens cone, the focusing motor is arranged on the main lens cone through a focusing motor frame, the outer surface of the focusing cam is provided with convex teeth, a focusing gear meshed with the convex teeth on the outer surface of the focusing cam is fixedly connected to an output shaft of the focusing motor, and a fourth biconvex positive lens and a second biconcave negative lens are closely connected to form a third gluing group to be arranged in the focusing lens cone and are tightly pressed through a focusing pressing ring, and the focusing motor is driven to rotate so that the focusing cam is driven to move towards the object direction.
Further, one end of the main lens barrel, which is far away from the end cover, is fixedly connected with a connecting flange, a first focusing limiting bracket and a second focusing limiting bracket are fixed on the focusing cam, and a pair of micro-switches for limiting the first focusing limiting bracket and the second focusing limiting bracket are fixedly connected on the connecting flange.
The invention also comprises a using method of the wide-spectrum low-distortion optical athermalization lens, which comprises the steps that the wide-spectrum low-distortion optical athermalization lens is utilized, a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconcave negative lens, a second biconvex positive lens, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens, a fourth meniscus negative lens, a fourth biconvex positive lens and a second biconcave negative lens are sequentially arranged in a lens shell from an object space to an image space, the first biconvex positive lens and the second biconvex positive lens are closely connected to form a first gluing group, the third biconvex positive lens and the fourth biconvex negative lens are closely connected to form a third gluing group, and a focusing motor drives a focusing cam to rotate, so that the imaging motor can move the lens towards the object space in the direction to enable the object space to be clear for the object to be 10 m.
Compared with the prior art, the invention has the following beneficial effects: (1) The lens has a large relative aperture of 1/1.2, a wide applicable spectrum range, good chromatic aberration correction of 450-950 nm wave bands, good imaging quality and small distortion; (2) In the embodiment, the second biconvex positive lens in the first bonding group adopts ultra-low dispersion glass H-FK61, has an optical athermalization effect, effectively corrects chromatic aberration of 450-950 nm wide spectrum, improves imaging quality of a lens, has MTF of more than 0.6 at 50lp characteristic frequency and less than 0.8% of distortion, has MTF of more than 0.5 at 50lp characteristic frequency in a temperature range of minus 40 ℃ to plus 60 ℃, and almost does not change imaging quality.
Drawings
Fig. 1 is a schematic diagram of an optical system according to an embodiment of the invention.
Fig. 2 is a graph of MTF at normal temperature for a lens according to an embodiment of the present invention.
Fig. 3 is a graph of MTF at-40 c for a lens of an embodiment of the present invention.
Fig. 4 is a graph of MTF at +60℃.
Fig. 5 is a graph of distortion curves for an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of an embodiment of the present invention.
Fig. 7 is a side elevation general view of the structural assembly of an embodiment of the present invention.
Fig. 8 is a front view of the structural assembly of an embodiment of the present invention.
In the figure: a-first meniscus negative lens, B-first biconvex positive lens, C-second meniscus negative lens, D-1-first biconcave negative lens, D-2-second biconvex positive lens, E-third biconvex positive lens, O-diaphragm, F-third meniscus negative lens, G-1-third biconvex positive lens, G-2-fourth meniscus negative lens, H-1-fourth biconvex positive lens, H-2-second biconcave negative lens, D-first bonding group, G-second bonding group, H-third bonding group, 41-mirror cap, 42-A plate press ring, 43-AB spacer, 44-BC spacer, 45-CD spacer, 46-main barrel, 47-EF spacer, 48-FG spacer, 49-GH spacer, 410-focus guide pin, 411-connecting flange, 412-focus motor gear, 413-electric frame, 414-first spacing bracket, 415-spacing pin, 416-second spacing bracket, 418-motor, 419-417, 418-cam, 420-cam-421, and 420-jog switch.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 8, the wide-spectrum low-distortion optical athermalization lens comprises a first meniscus negative lens a, a first biconvex positive lens B, a second meniscus negative lens C, a first biconcave negative lens D-1, a second biconvex positive lens D-2, a third biconvex positive lens E, a diaphragm O, a third meniscus negative lens F, a third biconvex positive lens G-1, a fourth meniscus negative lens G-2, a fourth biconvex positive lens H-1 and a second biconcave negative lens H-2 which are sequentially arranged in a lens housing from an object space to an image space.
The first biconvex negative lens and the second biconvex positive lens are closely connected to form a first gluing group D, the third biconvex positive lens and the fourth meniscus negative lens are closely connected to form a second gluing group G, and the fourth biconvex positive lens and the second biconvex negative lens are closely connected to form a third gluing group H.
In the invention, the third gluing group H is a focusing group, and a focusing mechanism for driving the third gluing group to move forwards and backwards is arranged in the lens shell.
The focal length f' =20mm of the optical system formed by the lenses, the relative aperture is 1/1.2, and the image surface diameter is 8.8mm.
The second biconvex positive lens in the first bonding group adopts ultra-low dispersion glass H-FK61.
In this embodiment, a wide-spectrum low-distortion optical athermalized lens is provided, and the curvature radius, thickness and refractive index of each lens are required to meet the following requirements:
in this embodiment, the air space between the first meniscus negative lens and the first biconvex positive lens is 2.27mm, the air space between the first biconvex positive lens and the second meniscus negative lens is 1.86mm, the air space between the second meniscus negative lens and the first bonding group is 6.60 mm, the air space between the first bonding group and the third biconvex positive lens is 0.13mm, the air space between the third biconvex positive lens and the third meniscus negative lens is 1.17 mm, the air space between the third meniscus negative lens and the second bonding group is 1.38 mm, and the air space between the second bonding group and the third bonding group is 0.23 mm.
In the following tables, S1, S2, S3, S4 and … represent lens surfaces of the corresponding lenses in the order from the object space to the image space, and the corresponding thickness represents the thickness between the next surface, and the bonding surface in the bonding group is considered as only one surface.
By utilizing the difference between the thermal characteristics of the optical materials, for example, a material H-FK61 with a negative refractive index temperature coefficient is selected in the first bonding group D, a material ZF52 with a positive refractive index temperature coefficient is selected in the second bonding group G, and the materials with different thermal characteristics are reasonably combined, so that the defocusing generated by the lens and the defocusing generated by the mechanical structure are mutually compensated to eliminate the influence of temperature, and the optical athermalization effect in the range of minus 40 ℃ to plus 60 ℃ is obtained.
The third gluing group is a focusing group, and on the premise that the total length of the optical system is unchanged, the third gluing group moves towards the object direction, so that the lens can clearly image the object at the positions of 10m to infinity.
The focal length f' =20mm of the optical system composed of the lenses has a relative aperture of 1/1.2 and an image plane diameter of 8.8mm.
Referring to fig. 2 and 5, the second biconvex positive lens in the first bonding group adopts ultra-low dispersion glass H-FK61, so that chromatic aberration of a broad spectrum of 450 nm-950 nm is effectively corrected, imaging quality of the lens is improved, MTF is greater than 0.6 at a characteristic frequency of 50lp, and distortion is less than 0.8%.
As shown in fig. 2, 3 and 4, the wide-spectrum low-distortion optical athermalization lens utilizes the difference between the thermal characteristics of optical materials, and reasonably combines materials with different thermal characteristics to mutually compensate the defocusing generated by the lens and the defocusing generated by a mechanical structure so as to eliminate the influence of temperature, thereby obtaining the optical athermalization effect within the range of-40 ℃ to +60 ℃.
The lens shell comprises a main lens barrel, a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconvex negative lens and a second biconvex positive lens are closely connected to form a first bonding group, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens and a fourth meniscus negative lens are closely connected to form a second bonding group, the second bonding group is sequentially arranged in the main lens barrel, a pressing ring 42 for limiting the first meniscus negative lens is fixed at one end of the main lens barrel, a sealing cover 41 fixedly connected with the main lens barrel is arranged at the outer side end of the pressing ring, an AB spacer 43 is arranged between the first meniscus negative lens and the first biconvex positive lens in the main lens barrel 46, a CD spacer 45 is arranged between the second meniscus negative lens and the first biconvex negative lens and the second biconvex positive lens, a EF spacer 47 is arranged between the first biconvex negative lens and the third biconvex positive lens, and a fourth biconvex positive lens spacer FG spacer 49 is arranged between the first biconvex negative lens and the third biconvex negative lens, and the fourth biconvex positive lens is arranged between the first meniscus negative lens and the first biconvex negative lens and the fourth biconvex positive lens.
One side of the lens barrel, which is far away from the end cover, is fixedly provided with a focusing mechanism, the focusing mechanism is similar to the existing lens focusing mechanism and mainly comprises a focusing lens barrel 46, a focusing cam 417 and a focusing motor 418, the focusing lens barrel is sleeved in the main lens barrel 46, the focusing cam 417 is sleeved outside the main lens barrel 46 and is provided with a linear curve groove, the lead of the curve groove is set according to focusing quantity, the length of the curve groove and the transverse offset value, namely the distance of transverse displacement of the focusing lens barrel 46, a focusing guide pin 410 is embedded in the curve groove, a limit groove which is arranged along the radial direction is processed on the outer wall of the main lens barrel, the focusing guide pin is fixed on the main lens barrel through one end of a thread, the other end of the focusing guide pin penetrates through the limit groove of the outer wall of the main lens barrel, the focusing motor is arranged on the main lens barrel 46 through a focusing motor frame, the outer surface of the focusing cam 417 is provided with convex teeth, a gear 412 meshed with the convex teeth on the outer surface of the focusing cam is fixedly connected to the output shaft of the focusing motor, the fourth biconvex positive lens and the second biconcave negative lens closely form a third group, and the third group is arranged in the gluing machine and tightly pressed by the motor ring, and the third group is driven to move in the direction of the gluing lens to the third object, and the imaging direction is clear, and the imaging direction of the third object group is realized.
The one end fixedly connected with flange that deviates from the end cover of main lens barrel, be fixed with first focusing spacing support and second focusing spacing support on the focusing cam, fixedly connected with a pair of spacing micro-gap switch of spacing first focusing spacing support and second focusing spacing support on the flange.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (5)
1. A broad spectrum low distortion optical athermalization lens is characterized in that: the lens comprises a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconcave negative lens, a second biconvex positive lens, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens, a fourth meniscus negative lens, a fourth biconvex positive lens and a second biconcave negative lens which are sequentially arranged in a lens shell from an object space to an image space;
the first biconvex negative lens and the second biconvex positive lens are closely connected to form a first bonding group, the third biconvex positive lens and the fourth meniscus negative lens are closely connected to form a second bonding group, and the fourth biconvex positive lens and the second biconvex negative lens are closely connected to form a third bonding group;
the third gluing group is a focusing group, and a focusing mechanism for driving the third gluing group to move forwards and backwards is arranged in the lens shell;
the air interval between the first meniscus negative lens and the first biconvex positive lens is 2.27mm, the air interval between the first biconvex positive lens and the second meniscus negative lens is 1.86mm, the air interval between the second meniscus negative lens and the first bonding group is 6.60 mm, the air interval between the first bonding group and the third biconvex positive lens is 0.13mm, the air interval between the third biconvex positive lens and the third meniscus negative lens is 1.17 mm, the air interval between the third meniscus negative lens and the second bonding group is 1.38 mm, and the air interval between the second bonding group and the third bonding group is 0.23 mm;
the focal length f' =20mm of the optical system formed by the lenses, the relative aperture is 1/1.2, and the image surface diameter is 8.8mm;
the second biconvex positive lens in the first bonding group adopts ultra-low dispersion glass H-FK61.
2. The broad spectrum low distortion optical athermalized lens according to claim 1, wherein: the lens shell comprises a main lens barrel, a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconvex negative lens and a second biconvex positive lens are closely connected to form a first bonding group, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens and a fourth meniscus negative lens are closely connected to form a second bonding group, the second bonding group is sequentially arranged in the main lens barrel, a pressing ring for limiting the first meniscus negative lens is fixed at one end of the main lens barrel, a sealing cover fixedly connected with the main lens barrel is arranged at the outer side end of the pressing ring, an AB spacer ring is arranged between the first biconvex negative lens and the first biconvex positive lens in the main lens barrel, a CD spacer ring is arranged between the second biconvex negative lens and the second biconvex positive lens, a first bonding group and the third positive lens are closely connected to form a first bonding spacer ring, a EF spacer ring is arranged between the third biconvex negative lens and the third biconvex negative lens, and the fourth biconvex negative lens are closely connected to form a first bonding spacer ring, and a second biconvex negative lens are closely connected to form a second spacer ring.
3. The broad spectrum low distortion optical athermalized lens according to claim 2, wherein: the focusing mechanism mainly comprises a focusing lens barrel, a focusing cam and a focusing motor, wherein the focusing lens barrel is sleeved in the main lens barrel, the focusing cam is sleeved outside the main lens barrel, a linear curve groove is formed in the focusing cam, a focusing guide pin is embedded in the curve groove, a limiting groove which is arranged in the radial direction is formed in the outer wall of the main lens barrel, the focusing guide pin is fixed on the focusing lens barrel through one end of a thread, the other end of the focusing guide pin penetrates through the limiting groove in the outer wall of the main lens barrel, the focusing motor is arranged on the main lens barrel through a focusing motor frame, a convex tooth is arranged on the outer surface of the focusing cam, a focusing gear meshed with the convex tooth on the outer surface of the focusing cam is fixedly connected to an output shaft of the focusing motor, a third gluing group is arranged in the focusing lens barrel and is tightly pressed through a pressing ring, and the focusing motor drives the focusing cam to rotate so as to realize movement of the third gluing group towards the object direction.
4. A broad spectrum low distortion optical athermalized lens according to claim 3, wherein: the one end fixedly connected with flange that deviates from the end cover of main lens barrel, be fixed with first focusing spacing support and second focusing spacing support on the focusing cam, fixedly connected with a pair of spacing micro-gap switch of spacing first focusing spacing support and second focusing spacing support on the flange.
5. A method for using a broad-spectrum low-distortion optical athermalization lens is characterized by comprising the following steps of: the wide-spectrum low-distortion optical athermalization lens comprises a wide-spectrum low-distortion optical athermalization lens, wherein a first meniscus negative lens, a first biconvex positive lens, a second meniscus negative lens, a first biconcave negative lens, a second biconvex positive lens, a third biconvex positive lens, a diaphragm, a third meniscus negative lens, a third biconvex positive lens, a fourth meniscus negative lens, a fourth biconvex positive lens and a second biconvex negative lens are sequentially arranged in a lens shell from an object space to an image space, the first biconvex negative lens and the second biconvex positive lens are closely connected to form a first bonding group, the third biconvex positive lens and the fourth biconvex negative lens are closely connected to form a third bonding group, and a focusing motor drives a focusing cam to rotate so that the third bonding group moves towards the object direction, and the lens can clearly image a target at a position ranging from 10m to infinity.
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| CN201811286482.6A CN109143525B (en) | 2018-10-31 | 2018-10-31 | Wide-spectrum low-distortion optical athermalized lens and application method thereof |
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| CN109143525B true CN109143525B (en) | 2023-09-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914847A (en) * | 2012-09-12 | 2013-02-06 | 中国科学院西安光学精密机械研究所 | Underwater imaging lens |
| CN104238086A (en) * | 2013-06-17 | 2014-12-24 | 富士胶片株式会社 | Imaging lens and imaging apparatus |
| CN207718067U (en) * | 2017-11-29 | 2018-08-10 | 苏州莱能士光电科技股份有限公司 | A kind of high pixel optics system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914847A (en) * | 2012-09-12 | 2013-02-06 | 中国科学院西安光学精密机械研究所 | Underwater imaging lens |
| CN104238086A (en) * | 2013-06-17 | 2014-12-24 | 富士胶片株式会社 | Imaging lens and imaging apparatus |
| CN207718067U (en) * | 2017-11-29 | 2018-08-10 | 苏州莱能士光电科技股份有限公司 | A kind of high pixel optics system |
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