CN115291353B - Large-caliber small-spacing optical lens group, assembling and adjusting method and optical equipment - Google Patents
Large-caliber small-spacing optical lens group, assembling and adjusting method and optical equipment Download PDFInfo
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- CN115291353B CN115291353B CN202210996351.7A CN202210996351A CN115291353B CN 115291353 B CN115291353 B CN 115291353B CN 202210996351 A CN202210996351 A CN 202210996351A CN 115291353 B CN115291353 B CN 115291353B
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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
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
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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
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The embodiment of the invention provides a large-caliber small-space optical lens group and an assembling and adjusting method. The novel structural form and the novel adjustment scheme are adopted, the limitation of the original scheme on the large-caliber small-center-distance optical lens group is well solved, the lens assembly adjustment completed by the scheme can achieve the precision that the lens inclination error is superior to 15' and the interval error is superior to 0.02mm, the adjustment difficulty of the large-caliber small-distance lens can be greatly reduced on the premise of ensuring the precision, and the adjustment time is saved.
Description
Technical Field
The invention relates to the field of optical instruments, in particular to a large-caliber small-space optical lens group, an assembling and adjusting method and optical equipment.
Background
With the rapid development of the military technologies such as detection, aviation, aerospace and the like, the application of the lens of the high-precision lens group is more and more widespread, and how to realize the high-precision adjustment of the lens group becomes an important link for ensuring the precision of the whole optical system.
The finish grinding centering adjustment is the most widely used lens assembly adjustment method at present, the lens using the adjustment method has certain limitation, and the existing lens assembly adjustment scheme is not applicable to all cases. Firstly, when the caliber of the lens group is larger, the total weight of the single lens and the lens seat component is larger, so that the difficulty of integrating the single lens and the lens seat component into the lens barrel is increased, the interval and the angle deviation between the single lenses are adjusted through grinding the lens seat, and the single lens and the lens seat component are required to be repeatedly installed, measured, taken out and ground, so that more time and labor are wasted.
In addition, when the lens group lens has small-spacing adjacent lenses, the method that the lenses are independently arranged in the independent lens seat is not applicable any more, and accordingly, the grinding lens seat cannot be used for adjusting the angle and the spacing between the adjacent lenses.
Disclosure of Invention
In view of this, embodiments of the present invention provide a large-caliber small-pitch optical lens assembly, an assembling and adjusting method, and an optical device.
In a first aspect, an embodiment of the present invention provides a large-caliber small-pitch optical lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, where the fourth lens is a convex lens, the fifth lens is a concave lens, and a center-to-center distance between the fourth lens and the fifth lens is smaller than a first target value;
the first lens is provided with a first lens seat, the second lens is provided with a second lens seat, the third lens is provided with a third lens seat, the fourth lens and the fifth lens share the fourth lens seat, and the sixth lens is provided with a fifth lens seat;
the fourth lens seat is provided with a flange end surface, a first side of the flange end surface is a plane, the fifth lens is abutted against the plane, a second side of the flange end surface is an arc surface, and the fourth lens is abutted against the arc surface;
a fourth top wire hole for adjusting the inclination angle of the fourth lens is formed in the outer wall of the fourth lens seat, a fourth top wire is arranged in the fourth top wire hole, the fourth lens can move reciprocally along the circular arc surface by adjusting the position of the fourth top wire in the fourth top wire hole, a fifth top wire hole is formed in the outer wall of the fifth lens seat, a fifth top wire is arranged in the fifth top wire hole, and translational movement of the fifth lens along the plane is realized by adjusting the position of the fifth top wire in the fifth top wire hole;
the second lens seat is installed on the first lens seat, the third lens seat is installed on the second lens seat, the fourth lens seat is installed on the third lens seat, and the fifth lens seat is installed on the fourth lens seat.
As an alternative, the outer wall of the first lens seat is provided with a first top wire hole for adjusting the position of the second lens seat, the outer wall of the second lens seat is provided with a second top wire hole for adjusting the position of the third lens seat, the outer wall of the third lens seat is provided with a third top wire hole for adjusting the position of the fourth lens seat, and the outer wall of the fourth lens seat is also provided with a fifth top wire hole for adjusting the position of the fifth lens seat.
As an alternative, the arc surface has a curvature corresponding to the curvature of the fourth lens.
As an alternative scheme, the lens assembly further comprises a first pressing ring, a second pressing ring, a third pressing ring, a fourth pressing ring, a fifth pressing ring and a sixth pressing ring, wherein the first pressing ring presses the first lens, the second pressing ring presses the second lens, the third pressing ring presses the third lens, the fourth pressing ring presses the fourth lens, the fifth pressing ring presses the fifth lens, and the sixth pressing ring presses the sixth lens.
As an alternative, the first target value is an axial thickness of the fourth lens base.
In a second aspect, an embodiment of the present invention provides a method for adjusting a large-caliber small-pitch optical lens group, which is applied to the large-caliber small-pitch optical lens group, and the method includes:
monitoring and monitoring single mirror surface shapes corresponding to the first lens, the second lens, the third lens and the sixth lens by using a 4D interferometer, and adjusting and fixing each lens and a corresponding lens seat under the condition that the single mirror surface shapes meet the preset conditions;
the method comprises the steps that a fourth lens and a fifth lens are respectively arranged on two sides of a flange end face of a fourth lens seat, the fourth lens is propped against an arc surface of the flange end face, the fifth lens is propped against a plane of the flange end face, the thickness of the flange end face is smaller than a target interval value, a fourth top wire hole used for adjusting the inclination angle of the fourth lens is formed in the outer wall of the fourth lens seat, a fourth top wire is arranged in the fourth top wire hole, a fifth top wire hole is formed in the outer wall of the fourth lens seat, and a fifth top wire is arranged in the fifth top wire hole;
measuring the central inclination angle and the distance value of the fourth lens and the fifth lens by using a centering interval measuring instrument, adjusting the position of the fourth jackscrew in the fourth jackscrew hole according to the central inclination angle to realize the reciprocating movement of the fourth lens along the circular arc surface until the central inclination angle reaches a preset angle to fix the fourth jackscrew, and adjusting the position of the fifth jackscrew in the fifth jackscrew hole by using the distance value to realize the translational movement of the fifth lens along the plane until the distance value reaches the target distance value to fix the fifth jackscrew, thereby completing the assembly and adjustment of the fourth lens and the fifth lens;
and connecting the first lens seat, the second lens seat, the third lens seat, the fourth lens seat and the fifth lens seat in sequence, measuring the tolerance of the lens in each lens seat by using a centering instrument, and fixing each lens seat when the tolerance reaches a preset condition to complete the assembly and adjustment of the large-caliber small-space optical lens group.
As an alternative scheme, connect first mirror seat, second mirror seat, third mirror seat in proper order the fourth mirror seat, fifth mirror seat utilize the centralizer to carry out tolerance measurement to the lens in every mirror seat, treat that the tolerance reaches and predetermines the condition and fix every mirror seat, accomplish the installation of large-bore small-spacing optical lens group and transfer, include:
placing the first lens on the centering instrument, and adjusting the first lens to be coaxial with the centering instrument;
the first pressing ring and the second lens seat are arranged in the first lens seat, the second lens seat is adjusted to translate through a first jackscrew hole arranged on the outer wall of the first lens seat, the centering instrument is used for measuring the deflection angle and the distance between the first lens and the second lens, the repairing and grinding quantity of the first pressing ring is determined based on the deflection angle and the distance, the first pressing ring is reinstalled, the deflection angle and the distance are measured again until the preset numerical condition is met, the first jackscrew in the first jackscrew hole is fixed, and the assembly and adjustment of the first lens and the second lens are completed;
the adjustment of the third lens seat, the fourth lens seat and the fifth lens seat is completed by sequentially utilizing the deflection angle and the interval between two adjacent lenses;
and measuring the deflection angles and the distances of all lenses by using the centering instrument, and completing all adjustment when the deflection angles and the distances meet the requirements.
In a third aspect, an embodiment of the present invention provides an optical apparatus having the above-described large-aperture small-pitch optical lens group.
The embodiment of the invention provides a large-caliber small-space optical lens group and an assembling and adjusting method. The novel structural form and the novel adjustment scheme are adopted, the limitation of the original scheme on the large-caliber small-center-distance optical lens group is well solved, the lens assembly adjustment completed by the scheme can achieve the precision that the lens inclination error is superior to 15' and the interval error is superior to 0.02mm, the adjustment difficulty of the large-caliber small-distance lens can be greatly reduced on the premise of ensuring the precision, and the adjustment time is saved.
Drawings
FIG. 1 is a schematic diagram of a large-aperture, small-pitch optical lens assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first lens base in a large-caliber small-pitch optical lens set according to an embodiment of the present invention.
Reference numerals: fourth lens holder 1, fourth clamping ring 2, fourth lens 3, fifth lens 4, fifth clamping ring 5, sixth lens 6, sixth clamping ring 7, fifth lens holder 8, third lens holder 9, third lens 10, third clamping ring 11, second lens holder 12, second lens 13, second clamping ring 14, first lens holder 15, first clamping ring 16, first lens 17, fourth top wire hole 18, fifth top wire hole 19, flange end face 20.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The terms first, second, third, fourth and the like in the description and in the claims and in the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 and 2, in an embodiment of the present invention, a large-caliber small-pitch optical lens group is provided, which includes a first lens 17, a second lens 13, a third lens 10, a fourth lens 3, a fifth lens 4 and a sixth lens 6, wherein the fourth lens 3 is a convex lens, the fifth lens 4 is a concave lens, a center-to-center distance between the fourth lens 3 and the fifth lens 4 is smaller than a first target value, and the first target value is a limitation of small pitch, that is, a space between the fourth lens 3 and the fifth lens 4 is smaller than a space sufficient for assembling respective lens holders, and a mode of sharing the lens holders is adopted;
the first lens 17 has a first lens base 15, the second lens 13 has a second lens base 12, the third lens 10 has a third lens base 9, the fourth lens 3 and the fifth lens 4 share a fourth lens base 1, and the sixth lens 6 has a fifth lens base 8;
the fourth lens base 1 is provided with a flange end surface 20, a first side of the flange end surface 20 is a plane, the fifth lens 4 is abutted against the plane, a second side of the flange end surface 20 is an arc surface, and the fourth lens 3 is abutted against the arc surface;
a fourth top wire hole 18 for adjusting the inclination angle of the fourth lens 3 is formed in the outer wall of the fourth lens holder 1, in which the fourth lens 3 is mounted, a fourth top wire (not shown in the figure) is arranged in the fourth top wire hole 18, the fourth lens 3 can reciprocate along the arc surface by adjusting the position of the fourth top wire in the fourth top wire hole 18, a fifth top wire hole 19 is formed in the outer wall of the fourth lens holder 1, in which the fifth lens 4 is mounted, a fifth top wire is arranged in the fifth top wire hole 19, and translational movement of the fifth lens 4 along the plane is realized by adjusting the position of the fifth top wire in the fifth top wire hole 19;
the second lens seat 12 is installed on the first lens seat 15, the third lens seat 9 is installed on the second lens seat 12, the fourth lens seat 1 is installed on the third lens seat 9, the fifth lens seat 8 is installed on the fourth lens seat 1, and two adjacent lens seats are assembled and adjusted in sequence through a centering instrument, so that the assembly of the whole lens group is completed.
In some embodiments, the outer wall of the first lens holder 15 has a first top wire hole (not shown in the figure) for adjusting the position of the second lens holder 12, the outer wall of the second lens holder 12 has a second top wire hole (not shown in the figure) for adjusting the position of the third lens holder 9, the outer wall of the third lens holder 9 has a third top wire hole (not shown in the figure) for adjusting the position of the fourth lens holder 1, and the outer wall of the fourth lens holder 1 further has a fifth top wire hole (not shown in the figure) for adjusting the position of the fifth lens holder.
In some embodiments, the radian of the arc surface is consistent with the curvature of the fourth lens 3, so that the fourth lens 3 is smoother in the process of pushing the fourth lens 3 to move in an inclined manner, the inclination can be well adjusted, and the controllability of the inclination angle can be conveniently adjusted.
In some embodiments, the lens further comprises a first pressing ring 16, a second pressing ring 14, a third pressing ring 11, a fourth pressing ring 2, a fifth pressing ring 5 and a sixth pressing ring 7, wherein the first pressing ring 16 presses the first lens 17, the second pressing ring 14 presses the second lens 13, the third pressing ring 11 presses the third lens 10, the fourth pressing ring 2 presses the fourth lens 3, the fifth pressing ring 5 presses the fifth lens 4 and the sixth pressing ring 7 presses the sixth lens 6, and it is required that the lens can be cured by dispensing after the position assembly is completed.
In some embodiments, the first target value is the axial thickness of the fourth lens base 1, and because the space between the fourth lens and the fifth lens is insufficient, a mode of sharing one lens base is adopted.
Correspondingly, the embodiment of the invention also provides a method for assembling and adjusting the large-caliber small-pitch optical lens group, which is applied to the large-caliber small-pitch optical lens group and comprises the following steps:
s1, monitoring and monitoring single mirror surfaces corresponding to a first lens 17, a second lens 13, a third lens 10 and a sixth lens 6 by using a 4D interferometer, and adjusting and fixing each lens and a corresponding mirror seat under the condition that the single mirror surface meets the preset condition;
s2, respectively mounting a fourth lens 3 and a fifth lens 4 on two sides of a flange end face 20 of a fourth lens holder 1, wherein the fourth lens 3 is abutted against an arc surface of the flange end face 20, and the fifth lens 4 is abutted against a plane of the flange end face 20, wherein the thickness of the flange end face 20 is smaller than a target interval value, a fourth top wire hole 18 for adjusting the inclination angle of the fourth lens 3 is formed in the outer wall of the fourth lens holder 1, a fourth top wire is arranged in the fourth top wire hole 18, a fifth top wire hole 19 is formed in the outer wall of the fourth lens holder 1, on which the fifth lens 4 is mounted, and a fifth top wire is arranged in the fifth top wire hole 19;
s3, measuring the central inclination angle and the distance value of the fourth lens 3 and the fifth lens 4 by using a centering interval measuring instrument, adjusting the position of the fourth jackscrew in the fourth jackscrew hole 18 according to the central inclination angle to realize the reciprocating movement of the fourth lens 3 along the arc surface until the central inclination angle reaches a preset angle to fix the fourth jackscrew, and adjusting the position of the fifth jackscrew in the fifth jackscrew hole 19 by using the distance value to realize the translational movement of the fifth lens 4 along the plane until the distance value reaches the target distance value to fix the fifth jackscrew, thereby finishing the assembly and adjustment of the fourth lens 3 and the fifth lens 4;
and S4, sequentially connecting the first lens seat 15, the second lens seat 12, the third lens seat 9, the fourth lens seat 1 and the fifth lens seat 8, measuring the tolerance of the lens in each lens seat by using a centering instrument, and fixing each lens seat when the tolerance reaches a preset condition, so as to complete the assembly and adjustment of the large-caliber small-space optical lens group.
In some embodiments, in S4, comprising:
placing the first lens 17 on the centering instrument, namely a centering interval measuring instrument, and adjusting the first lens 17 to be coaxial with the centering instrument;
placing a first clamping ring 16 and a second lens seat 12 in the first lens seat 15, adjusting the translation of the second lens seat 12 through a first jackscrew hole arranged on the outer wall of the first lens seat 15, measuring the deflection angle and the distance between the first lens 17 and the second lens 13 by using the centering instrument, determining the polishing amount of the first clamping ring 16 based on the deflection angle and the distance, reinstalling the first clamping ring 16, measuring the deflection angle and the distance again until the deflection angle and the distance meet preset numerical conditions, and fixing a first jackscrew in the first jackscrew hole to finish the assembly and adjustment of the first lens 17 and the second lens 13;
the adjustment of the third lens seat 9, the fourth lens seat 1 and the fifth lens seat 8 is completed by sequentially utilizing the deflection angle and the interval between two adjacent lenses;
and measuring the deflection angles and the distances of all lenses by using the centering instrument, and completing all adjustment when the deflection angles and the distances meet the requirements.
The invention provides a method for assembling and adjusting a large-caliber small-space optical lens group, which aims to solve the problem of assembling and adjusting a large-caliber small-space lens of a high-precision optical lens group. By using the scheme, the adjustment difficulty of the large-caliber and small-spacing lenses can be greatly reduced on the premise of ensuring the precision, and the adjustment time is saved.
The following details the method for assembling and adjusting the optical lens group with large caliber and small space in the embodiment of the invention, taking the high-precision assembling and adjusting of the lens group with large caliber of 300mm and 6 sheets as an example, the assembling and adjusting steps comprise the following steps:
step one, detecting and monitoring by using a 4D interferometer, loading a single lens into a corresponding lens seat on the premise of ensuring the surface shape of the single lens, fixing the lens by adopting different modes such as a pressing ring and a pressing block according to the difference of the lenses, sealing and solidifying the glue, and finishing the single lens assembly and adjustment of the first lens 17, the second lens 13, the third lens 10 and the sixth lens 6.
And step two, the distance between the fourth lens 3 and the fifth lens 4 is small, so that the space is insufficient, and the lens is not suitable for being arranged in the respective lens seats. The fourth lens 3 and the fifth lens 4 are arranged in the same lens base. The flange end faces are processed in the lens base and used for supporting the fourth lens 3 and the fifth lens 4, the flange end faces for supporting the fourth lens 3 are arc faces close to the curvature of a mirror, the flange supporting end faces for supporting the fifth lens 4 are planes, the thickness of the flange is controlled through processing, the center-to-center distance between the fourth lens 3 and the fifth lens 4 after being arranged in the lens base is smaller than a theoretical value, and radial gaps are reserved between the fourth lens and the fifth lens 4 and the lens base so as to facilitate adjustment. The lens base is provided with uniformly distributed threaded jackscrew holes on the periphery of the outer wall of the installation position of the fourth lens 3 and the fifth lens 4, and is screwed into jackscrews. During assembling and adjusting, the fourth lens 3 and the fifth lens 4 are assembled into the fourth lens holder 1, after the pressing ring is lightly pressed, the fifth lens 4 is placed on the centering instrument in the upper direction according to the condition that the fourth lens 3 is arranged below, and the central inclination and the distance value of the fourth lens 3 and the fifth lens 4 are measured. According to the measured inclination value, the jackscrew of the fourth lens 3 is adjusted, the lens moves along the direction of the cambered surface flange, and the inclination angle of the fourth lens 3 is changed. Adjusting the top thread of the fifth lens 4 changes the translation of the fifth lens 4. The adjustment and measurement is continued until the fourth lens 3 tilt is adjusted within the allowable range. According to the center-to-center distance measurement value, a thin gasket with corresponding thickness is added on the plane supporting the fifth lens 4 on the flange end face, so that the center-to-center distance between the two lenses meets the requirement, the jackscrew is held in the state, the pressing ring is pressed, the sealing glue is solidified, and the assembly and adjustment of the fourth lens 3 and the fifth lens 4 are completed.
Thirdly, the convex surface of the first lens 17 falls down into the anti-collision tool ring, and then the first lens 17 and the anti-collision tool ring are integrally arranged on the centering instrument, and the centering instrument is adjusted to be coaxial with the first lens 17. The spacing ring and the single lens component of the second lens 13 fall into the lens seat of the first lens 17, are supported by the flange surface of the lens seat of the second lens 13, and are connected and fastened through screws. Screw thread top thread holes for adjusting the translation of the second lens 13 assembly are uniformly distributed on the outer wall of the lens seat of the first lens 17, after the top thread is installed for adjusting the translation of the second lens 13 assembly to a proper position, the centering interval measuring instrument is used for measuring the first lens 17, the deflection angle and interval of the second lens 13 are calculated according to the measured value, the spacer ring repairing and grinding quantity is calculated, the spacer ring repairing and grinding is taken down, after finishing repairing and grinding, the installation and measuring are carried out, the process is repeated until the measured value meets the requirement, the screw is fastened, the top thread is propped, the sealing glue is solidified, and the assembly and the adjustment of the first lens 17 and the second lens 13 are completed.
And step four, according to the adjustment steps of the first lens 17 and the second lens 13, the adjustment of the third lens 10, the fourth lens 3, the fifth lens 4 and the sixth lens 6 is sequentially completed. And the centering interval measuring instrument retests the inclination and interval values of the six lenses, and the whole assembly and adjustment work of the lens group is completed when the requirement is met.
The scheme of the invention is practically applied to the assembly and adjustment of a plurality of sets of lenses with 300mm aperture and 6 pieces, effectively solves the assembly and adjustment of the large aperture and small center interval lens group, realizes that the lens inclination error is superior to 15% through measurement, and has good effect when the interval error is superior to the precision of 0.02 mm.
Accordingly, an embodiment of the present invention provides an optical apparatus having the above-mentioned large-aperture small-pitch optical lens group.
The embodiment of the invention provides a large-caliber small-pitch optical lens group, an assembling and adjusting method and optical equipment, which adopt a novel structural form and an adjusting scheme, well solve the limitation of the original scheme on the large-caliber small-center-pitch optical lens group, and the lens assembling and adjusting completed by the scheme can realize the precision that the lens inclination error is superior to 15', the interval error is superior to 0.02mm, greatly reduce the assembling and adjusting difficulty of the large-caliber small-pitch lens on the premise of ensuring the precision, and save the assembling and adjusting time.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present disclosure may be performed in parallel, sequentially, or in a different order, so long as the desired result of the technical solution of the present disclosure is achieved, and the present disclosure is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. The large-caliber small-pitch optical lens group is characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the fourth lens is a convex lens, the fifth lens is a concave lens, and the center-to-center distance between the fourth lens and the fifth lens is smaller than a first target value; the first target value is the axial thickness of the fourth lens seat;
the first lens is provided with a first lens seat, the second lens is provided with a second lens seat, the third lens is provided with a third lens seat, the fourth lens and the fifth lens share the fourth lens seat, and the sixth lens is provided with a fifth lens seat;
the fourth lens seat is provided with a flange end surface, a first side of the flange end surface is a plane, the fifth lens is abutted against the plane, a second side of the flange end surface is an arc surface, and the fourth lens is abutted against the arc surface;
a fourth top wire hole for adjusting the inclination angle of the fourth lens is formed in the outer wall of the fourth lens seat, a fourth top wire is arranged in the fourth top wire hole, the fourth lens can move reciprocally along the circular arc surface by adjusting the position of the fourth top wire in the fourth top wire hole, a fifth top wire hole is formed in the outer wall of the fifth lens seat, a fifth top wire is arranged in the fifth top wire hole, and translational movement of the fifth lens along the plane is realized by adjusting the position of the fifth top wire in the fifth top wire hole;
the second lens seat is installed on the first lens seat, the third lens seat is installed on the second lens seat, the fourth lens seat is installed on the third lens seat, and the fifth lens seat is installed on the fourth lens seat.
2. The large-caliber small-pitch optical lens group according to claim 1, wherein the outer wall of the first lens holder is provided with a first top wire hole for adjusting the position of the second lens holder, the outer wall of the second lens holder is provided with a second top wire hole for adjusting the position of the third lens holder, the outer wall of the third lens holder is provided with a third top wire hole for adjusting the position of the fourth lens holder, and the outer wall of the fourth lens holder is further provided with a fifth top wire hole for adjusting the position of the fifth lens holder.
3. The large-caliber small-pitch optical lens group according to claim 1, wherein the arc surface has an arc degree conforming to the curvature of the fourth lens.
4. The large caliber small pitch optical lens group according to claim 1, further comprising a first press ring, a second press ring, a third press ring, a fourth press ring, a fifth press ring, a sixth press ring, the first press ring pressing the first lens, the second press ring pressing the second lens, the third press ring pressing the third lens, the fourth press ring pressing the fourth lens, the fifth press ring pressing the fifth lens, and the sixth press ring pressing the sixth lens.
5. A method for assembling and adjusting a large-caliber small-pitch optical lens set, which is applied to the large-caliber small-pitch optical lens set according to any one of claims 1 to 4, and comprises the steps of:
monitoring and monitoring single mirror surface shapes corresponding to the first lens, the second lens, the third lens and the sixth lens by using a 4D interferometer, and adjusting and fixing each lens and a corresponding lens seat under the condition that the single mirror surface shapes meet the preset conditions;
the method comprises the steps that a fourth lens and a fifth lens are respectively arranged on two sides of a flange end face of a fourth lens seat, the fourth lens is propped against an arc surface of the flange end face, the fifth lens is propped against a plane of the flange end face, the thickness of the flange end face is smaller than a target interval value, a fourth top wire hole used for adjusting the inclination angle of the fourth lens is formed in the outer wall of the fourth lens seat, a fourth top wire is arranged in the fourth top wire hole, a fifth top wire hole is formed in the outer wall of the fourth lens seat, and a fifth top wire is arranged in the fifth top wire hole;
measuring the central inclination angle and the distance value of the fourth lens and the fifth lens by using a centering interval measuring instrument, adjusting the position of the fourth jackscrew in the fourth jackscrew hole according to the central inclination angle to realize the reciprocating movement of the fourth lens along the circular arc surface until the central inclination angle reaches a preset angle to fix the fourth jackscrew, and adjusting the position of the fifth jackscrew in the fifth jackscrew hole by using the distance value to realize the translational movement of the fifth lens along the plane until the distance value reaches the target distance value to fix the fifth jackscrew, thereby completing the assembly and adjustment of the fourth lens and the fifth lens;
and connecting the first lens seat, the second lens seat, the third lens seat, the fourth lens seat and the fifth lens seat in sequence, measuring the tolerance of the lens in each lens seat by using a centering instrument, and fixing each lens seat when the tolerance reaches a preset condition to complete the assembly and adjustment of the large-caliber small-space optical lens group.
6. The method for assembling and adjusting a large-caliber small-pitch optical lens group according to claim 5, wherein the sequentially connecting the first lens holder, the second lens holder, the third lens holder, the fourth lens holder and the fifth lens holder, performing tolerance measurement on the lens in each lens holder by using a centering instrument, and fixing each lens holder when the tolerance reaches a preset condition, thereby completing the assembling and adjusting of the large-caliber small-pitch optical lens group, and the method comprises the following steps:
placing the first lens on the centering instrument, and adjusting the first lens to be coaxial with the centering instrument;
the first pressing ring and the second lens seat are arranged in the first lens seat, the second lens seat is adjusted to translate through a first jackscrew hole arranged on the outer wall of the first lens seat, the centering instrument is used for measuring the deflection angle and the distance between the first lens and the second lens, the repairing and grinding quantity of the first pressing ring is determined based on the deflection angle and the distance, the first pressing ring is reinstalled, the deflection angle and the distance are measured again until the preset numerical condition is met, the first jackscrew in the first jackscrew hole is fixed, and the assembly and adjustment of the first lens and the second lens are completed;
the adjustment of the third lens seat, the fourth lens seat and the fifth lens seat is completed by sequentially utilizing the deflection angle and the interval between two adjacent lenses;
and measuring the deflection angles and the distances of all lenses by using the centering instrument, and completing all adjustment when the deflection angles and the distances meet the requirements.
7. An optical apparatus having the large-caliber small-pitch optical lens group according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210996351.7A CN115291353B (en) | 2022-08-19 | 2022-08-19 | Large-caliber small-spacing optical lens group, assembling and adjusting method and optical equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003215420A (en) * | 2002-01-28 | 2003-07-30 | Canon Inc | Lens inclination adjusting mechanism and lens barrel |
| CN106772897A (en) * | 2016-12-16 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | The mounting and positioning device of lens in a kind of cold optical technology |
| CN107209397A (en) * | 2015-01-27 | 2017-09-26 | 微软技术许可有限责任公司 | Imaging len with image stabilization |
| CN112243077A (en) * | 2019-07-19 | 2021-01-19 | 华为技术有限公司 | Lens, camera module and electronic equipment |
| CN114660754A (en) * | 2021-12-24 | 2022-06-24 | 中国科学院长春光学精密机械与物理研究所 | High-precision assembling and adjusting method for large-caliber optical lens group |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003052481A2 (en) * | 2001-12-14 | 2003-06-26 | Raytheon Company | Precisely aligned lens structure and a method for its fabrication |
| CN2881716Y (en) * | 2005-08-31 | 2007-03-21 | 亚洲光学股份有限公司 | Collapsible lens system and turn-over type lens accepting mechanism |
| US8619374B2 (en) * | 2011-07-05 | 2013-12-31 | Panasonic Corporation | Lens control apparatus and interchangeable lens including lens control apparatus |
| CN107290836B (en) * | 2016-03-30 | 2020-04-10 | 上海微电子装备（集团）股份有限公司 | Lens adjusting device and adjusting method |
| CN206339735U (en) * | 2016-10-25 | 2017-07-18 | 瑞声科技(新加坡)有限公司 | Camera lens module |
| CN107505684B (en) * | 2017-08-25 | 2020-04-28 | 南京理工大学 | Method for assembling and adjusting lens group |
| JP6952581B2 (en) * | 2017-11-10 | 2021-10-20 | 株式会社ミツトヨ | Tilt adjustment mechanism |
| CN108732780B (en) * | 2018-03-07 | 2021-01-26 | 北京理工大学 | Automatic optical lens adjusting device and method |
-
2022
- 2022-08-19 CN CN202210996351.7A patent/CN115291353B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003215420A (en) * | 2002-01-28 | 2003-07-30 | Canon Inc | Lens inclination adjusting mechanism and lens barrel |
| CN107209397A (en) * | 2015-01-27 | 2017-09-26 | 微软技术许可有限责任公司 | Imaging len with image stabilization |
| CN106772897A (en) * | 2016-12-16 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | The mounting and positioning device of lens in a kind of cold optical technology |
| CN112243077A (en) * | 2019-07-19 | 2021-01-19 | 华为技术有限公司 | Lens, camera module and electronic equipment |
| CN114660754A (en) * | 2021-12-24 | 2022-06-24 | 中国科学院长春光学精密机械与物理研究所 | High-precision assembling and adjusting method for large-caliber optical lens group |
Non-Patent Citations (2)
| Title |
|---|
| 多组元透镜的安装和定位研究;张丽敏,吕天宇;激光与光电子学进展;第52卷;全文 * |
| 大口径透镜多点柔性支撑结构设计与分析;马磊,曹佃生,刘承志;光电工程;第42卷(第5期);全文 * |
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