CN114486195B - Image analyzer device and method suitable for optical lens transfer function detection - Google Patents
Image analyzer device and method suitable for optical lens transfer function detection Download PDFInfo
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- CN114486195B CN114486195B CN202210100947.4A CN202210100947A CN114486195B CN 114486195 B CN114486195 B CN 114486195B CN 202210100947 A CN202210100947 A CN 202210100947A CN 114486195 B CN114486195 B CN 114486195B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
Abstract
The invention provides an image analyzer device and a method suitable for optical lens transfer function detection, the device comprises a microscope objective (2), a focusing lens (3), a plane mirror assembly (20), a right-angle prism (5), an eyepiece (6) and a detector (8), wherein the plane mirror assembly (20) comprises a plane mirror (20-1). The image analyzer device has the functions of visual observation and detector, the two adopt a common light path structure on the structure for realizing the functions, the functions of visual observation and image acquisition of the detector can be switched by switching the positions of the plane reflectors, and the image analyzer device is simple, convenient and fast, does not interfere with each other and has compact structure; visual adjustment of a test light path can be realized through a visual observation function at any angle, the test difficulty is reduced, and the test efficiency is improved.
Description
Technical Field
The invention relates to the technical field of optical lens detection, in particular to an image analyzer device and method suitable for optical lens transfer function detection.
Background
The optical lens is a core component in various imaging systems, and the quality of the performance of the optical lens directly determines the quality of the imaging quality of the system. The Modulation Transfer Function (MTF) is an important technical index for evaluating the imaging performance of an optical lens at present, the MTF is the modulus of the optical transfer function, the level of the MTF is directly related to the cost of an optical system development process and the quality of imaging quality, various factors influencing the imaging quality such as diffraction, aberration, stray light and the like can be comprehensively reflected together, the image quality of the optical system can be objectively evaluated, and the MTF is an internationally recognized core evaluation index for the imaging performance of the optical system in an actual test process.
At present, domestic mainstream optical lens transfer function testing equipment mainly comprises a collimation system, a target generator and an image analyzer, and each component adopts foreign equipment, so that the cost is high, the period is long, the maintenance is difficult, and forbidden operation risks are faced at any time. The image analyzer component is a core component of transfer function testing equipment and is used for realizing visual adjustment and image acquisition of a testing light path, and no related product exists in China. In view of the above, an image analyzer suitable for optical lens transfer function detection in the visible light band is designed to facilitate localization of an image analyzer module and get rid of the situation that optical lens transfer function testing equipment is limited by people, and a task to be solved by related technical personnel in the industry is urgently needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a technical scheme of an image analyzer suitable for optical lens transfer function detection, which is used for solving the problems of high cost, difficult maintenance and the like of the conventional optical lens transfer function test equipment.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
in a first aspect, the invention provides an image analyser arrangement suitable for optical lens transfer function detection, comprising a planar mirror assembly (20), the planar mirror assembly (20) comprising a planar mirror (20-1), the planar mirror (20-1) being positionable in a first position (4-1) or a second position (4-2);
when the plane mirror (20-1) is arranged at the first position (4-1), the image analyzer device is provided with a focusing lens (3) and a detector (8) along the light path direction; the focusing lens (3) is used for focusing the parallel light emitted by the tested lens (9) and transmitting the light to the detector (8);
when the plane mirror (20-1) is arranged at the second position (4-2), the image analyzer device is provided with a microscope objective (2), a focusing lens (3), the plane mirror (20-1), a right-angle prism (5) and an ocular (6) along the direction of a light path; the microscope objective (2) is used for amplifying the image formed by the tested lens (9) and emitting the image in a parallel light mode; the focusing lens (3) is used for focusing the parallel light emitted by the microscope objective (2); the plane mirror (20-1) is used for reflecting the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to the eyepiece (6).
As an optional embodiment, the device further comprises a mounting base (11), and the plane mirror assembly (20), the focusing lens (3), the detector (8), the microscope objective (2), the right-angle prism (5) and the eyepiece (6) are all arranged on the mounting base (11).
As an optional embodiment, the device also comprises a connecting sleeve (10), wherein the connecting sleeve (10) is arranged at the front end of the mounting base (11), the microscope objective (2) is arranged at the front end of the connecting sleeve (10), and the focusing lens (3) is arranged inside the connecting sleeve (10).
As an optional embodiment, the device further comprises a rotating seat (12) and a limiting block (19);
the rotary seat (12) is arranged on the upper part of the mounting base (11) and is used as the upper limit of the plane mirror assembly (20); the limiting block (19) is arranged on the mounting base (11) and is used as the lower limiting block of the plane mirror assembly (20); the planar mirror assembly (20) is positionable between an upper limit and a lower limit.
As an optional embodiment, the device also comprises a rotating shaft sleeve (13), a rotating shaft (14) and a rotating shaft mounting seat (16);
the rotating shaft sleeve (13) is arranged in the rotating seat (12), the rotating shaft (14) is arranged in the rotating shaft sleeve (13) through clearance fit, the lower end of the rotating shaft (14) is positioned through a shoulder of the rotating shaft, and the upper end of the rotating shaft (14) is arranged at the bottom of the rotating shaft mounting seat (16).
As an optional embodiment, the device further comprises a right-angle prism mounting seat (17);
the right-angle prism (5) is arranged in a right-angle prism mounting seat (17), and the right-angle prism mounting seat (17) is arranged in a rotating shaft mounting seat (16) and used for adjusting the angle of emergent light of the right-angle prism (5).
As an alternative embodiment, the ocular seat (18) is further included, and the ocular seat (18) is arranged in the rotating shaft mounting seat (16) and used for mounting the ocular (6).
As an optional embodiment, the device further comprises a detector mounting seat (21), and the detector mounting seat (21) is mounted at the rear end of the mounting base (11) and used for mounting the detector (8).
As an optional embodiment, the plane mirror assembly (20) further comprises a knob (20-2), a first shaft sleeve (20-3), a plane mirror rotating shaft (20-4), a plane mirror mounting seat (20-5), a second shaft sleeve (20-6), a spring connecting seat (20-7), a first spring mounting screw (20-8), a spring (20-9) and a second spring mounting screw (20-10);
the plane mirror (20-1) is arranged in the plane mirror mounting seat (20-5) and is used for deflecting the light path; the plane mirror mounting base (20-5) is fixedly arranged on the plane mirror rotating shaft (20-4); the plane mirror rotating shaft (20-4) is arranged in the first shaft sleeve (20-3) and the second shaft sleeve (20-6) in a clearance fit manner; the first shaft sleeve (20-3) and the second shaft sleeve (20-6) are fixedly arranged in the mounting base (11);
the knob (20-2) is arranged at one end of the plane mirror rotating shaft (20-4), and the spring connecting seat (20-7) is fixedly arranged at the other end of the plane mirror rotating shaft (20-4);
the first spring mounting screw (20-8) is mounted on the mounting base (11) and is used for connecting one end of the spring (20-9); the second spring mounting screw (20-10) is mounted on the spring connecting seat (20-7) and is used for connecting the other end of the spring (20-9).
In a second aspect, the present invention provides an image analysis method suitable for optical lens transfer function detection, the method being applied to an image analyzer apparatus as in the first aspect of the present invention, the method comprising the steps of:
the plane mirror (20-1) is arranged at a second position (4-2), and the microobjective (2) is used for amplifying the image formed by the measured lens (9) and emitting the image in a parallel light mode; the focusing lens (3) focuses the parallel light emitted by the microscope objective (2); the plane mirror (20-1) reflects the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to the ocular (6);
the plane mirror (20-1) is placed at the first position (4-1), and the parallel light emitted by the tested lens (9) is focused through the focusing lens (3) and then transmitted to the detector (8).
The invention can obtain the following technical effects:
the image analyzer device has the functions of visual observation and detector, adopts a common light path structure on the structure for realizing the functions, can realize the functions of visual observation and image acquisition by the detector by switching the position of the plane reflector, is simple, convenient and non-interfering, and has compact structure; visual adjustment of a test light path can be achieved through a visual observation function at any angle, the test difficulty is reduced, and the test efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of an image analyzer apparatus suitable for optical lens transfer function detection according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an image analyzer apparatus suitable for optical lens transfer function detection in accordance with one embodiment of the present invention;
fig. 3 is a schematic structural diagram of a planar mirror assembly according to an embodiment of the present invention.
Reference numerals:
1-1. A first light; 1-2. A second light; 1-3. A third light ray; 1-4. Fourth light; 1-5. Fifth ray; 2. a microscope objective; 3. a focusing lens; 4-1. A first position; 4-2. A second position; 5. a right-angle prism; 6. an eyepiece; 7. a human eye observation position; 8. a detector; 9. a measured lens;
10. a connecting sleeve; 11. mounting a base; 12. a rotating base; 13. a rotating shaft sleeve; 14. a rotating shaft; 15. an outer housing; 16. a rotating shaft mounting base; 17. a right-angle prism mounting base; 18. an eyepiece mount; 19. a limiting block; 20. a planar mirror assembly; 21. a detector mounting base;
20-1. A plane mirror; 20-2. A knob; 20-3. A first shaft sleeve; 20-4. A plane mirror rotating shaft; 20-5, a plane mirror mounting seat; 20-6. A second shaft sleeve; 20-7, spring connecting seat; 20-8. A first spring mounting screw; 20-9. A spring; and 20-10, mounting a screw by using a second spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
Fig. 2 is a cross-sectional view of an image analyzer device suitable for optical lens transfer function detection according to an embodiment of the present invention. Preferably, in the present embodiment, the image analyzer is a visible light band image analyzer having a visual observation function and a probe acquisition function, and the structure for realizing the visual observation function and the probe acquisition function adopts a common optical path structure, and the specific structure is as follows:
the device comprises a plane mirror assembly (20), wherein the plane mirror assembly (20) comprises a plane mirror (20-1), and the plane mirror (20-1) can be placed in a first position (4-1) or a second position (4-2); the plane mirror (20-1) is a plane reflector;
when the plane mirror (20-1) is arranged at the first position (4-1), the image analyzer device is provided with a focusing lens (3) and a detector (8) along the light path direction; the focusing lens (3) is used for focusing the parallel light emitted by the tested lens (9) and transmitting the light to the detector (8);
when the plane mirror (20-1) is arranged at the second position (4-2), the image analyzer device is provided with a microscope objective (2), a focusing lens (3), the plane mirror (20-1), a right-angle prism (5) and an ocular (6) along the light path direction; the microscope objective (2) is used for amplifying the image formed by the tested lens (9) and emitting the image in a parallel light mode; the focusing lens (3) is used for focusing parallel light emitted by the microscope objective (2); the plane mirror (20-1) is used for reflecting the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to the eyepiece (6).
As shown in figure 1, when the device is used for realizing the visual observation function, a plane mirror (20-1) is firstly arranged at a second position (4-2), a transfer function test equipment collimation system sends parallel light to enter a tested lens (9), first light (1-1) emitted from the tested lens (9) enters a focusing lens (3) in a parallel light mode after being amplified by a microscope objective (2), then is emitted along the second light (1-2) after being focused, then is projected to a right-angle prism (5) along third light (1-3) after being reflected by the plane mirror (20-1) at the second position (4-2), enters an ocular (6) along fourth light (1-4) after being reflected by the right-angle prism (5), and is emitted to a human eye observation position (7) after being amplified by the ocular (6), so that the visual observation function of an image analyzer is realized.
When the device is used for realizing the function of the detector, the plane mirror (20-1) is located at the first position (4-1), so that light rays are projected to the detector (8) along the second light rays (1-2) and the fifth light rays (1-5) after passing through the focusing lens (3), image acquisition of imaging parameters of the lens (9) to be detected is realized, and the transfer function can be analyzed and calculated through the acquired images. The method realizes the visual observation of the image analyzer and the image acquisition function of the detector, and can realize the visual adjustment of the test light path through the visual observation function, thereby reducing the test difficulty and improving the test precision; meanwhile, the functions of visual observation and image acquisition of the detector can be switched by switching the positions of the plane reflectors, so that the method is simple and convenient, and the testing efficiency is improved.
In some embodiments, the device further comprises a mounting base (11), and the plane mirror assembly (20), the focusing lens (3), the detector (8), the microscope objective (2), the right-angle prism (5) and the ocular (6) are all arranged on the mounting base (11). Through setting up mounting base (11) as the carrier of other parts in the device, can prevent that each part position from taking place the skew in the test procedure, effectively promote the degree of accuracy of test.
In some embodiments, the device further comprises a connecting sleeve (10), the connecting sleeve (10) is arranged at the front end of the mounting base (11), the microscope objective (2) is arranged at the front end of the connecting sleeve (10), and the focusing lens (3) is arranged inside the connecting sleeve (10).
In this embodiment, the connection sleeve (10) can be installed at the front end of the installation base (11) through threaded connection, and the connection sleeve (10) is installed at the front end of the installation base (11) through threaded connection, but in other embodiments, the connection sleeve (10) and the installation base (11), and the microscope objective (2) and the connection sleeve (10) can also be connected through clamping, plugging and the like. Can effectively assemble micro objective (2), focusing lens (3) through setting up connecting sleeve (10), prevent that both positions from taking place the skew in test process, effectively promote the degree of accuracy of test.
In some embodiments, the device further comprises a rotating base (12) and a limiting block (19). The rotary seat (12) is arranged on the upper part of the mounting base (11) and is used as the upper limit of the plane mirror assembly (20); the limiting block (19) is arranged on the mounting base (11) and is used as the lower limiting block of the plane mirror assembly (20); the planar mirror assembly (20) is positionable between an upper limit and a lower limit. In the present embodiment, the rotary base (12) is attached to the upper part of the base (11) by screws. In the embodiment, the limiting block (19) is installed on the installation base (11) through screw connection.
Preferably, the device also comprises a rotating shaft sleeve (13), a rotating shaft (14) and a rotating shaft mounting seat (16). The rotating shaft sleeve (13) is installed in the rotating seat (12), the rotating shaft (14) is installed in the rotating shaft sleeve (13) through clearance fit, the lower end of the rotating shaft (14) is located through a shoulder of the rotating shaft, and the upper end of the rotating shaft (14) is installed at the bottom of the rotating shaft installation seat (16).
In the embodiment, the rotating shaft sleeve (13) is installed in the rotating base (12) through a threaded connection, and the upper end of the rotating shaft (14) is installed at the bottom of the rotating shaft installation base (16) through a threaded connection. Therefore, the rotating shaft (14) and the rotating shaft mounting seat (16) can rotate 360 degrees in the circumferential direction relative to the rotating shaft sleeve (13). Preferably, the visible light wave band image analysis device further comprises an outer shell (15), and the outer shell (15) is fixedly arranged on the rotating shaft mounting seat (16) through screw connection.
In certain embodiments, the apparatus further comprises a right angle prism mount (17); the right-angle prism (5) is arranged in a right-angle prism mounting seat (17), and the right-angle prism mounting seat (17) is arranged in a rotating shaft mounting seat (16) and used for adjusting the angle of emergent light of the right-angle prism (5).
In some embodiments, the apparatus further comprises an eyepiece mount (18), the eyepiece mount (18) being mounted in the spindle mount (16) for mounting the eyepiece (6). Therefore, 360-degree circumferential rotation of the ocular lens (6) can be realized through the rotating shaft mounting seat (16), and visual observation of human eyes at any angle is facilitated.
In some embodiments, the device further comprises a detector mounting seat (21), and the detector mounting seat (21) is mounted at the rear end of the mounting base (11) and is used for mounting the detector (8). The detector (8) is preferably an image detector and is used for collecting images of the imaging parameters of the tested lens so as to realize the analysis and calculation of the transfer function.
As shown in fig. 3, in some embodiments, the planar mirror assembly (20) further includes a knob (20-2), a first shaft sleeve (20-3), a mirror rotating shaft (20-4), a mirror mounting seat (20-5), a second shaft sleeve (20-6), a spring connecting seat (20-7), a first spring mounting screw (20-8), a spring (20-9), and a second spring mounting screw (20-10);
the plane mirror (20-1) is arranged in the plane mirror mounting seat (20-5) and is used for deflecting the light path; the plane mirror mounting seat (20-5) is fixedly arranged on the plane mirror rotating shaft (20-4); the plane mirror rotating shaft (20-4) is arranged in the first shaft sleeve (20-3) and the second shaft sleeve (20-6) in a clearance fit manner; the first shaft sleeve (20-3) and the second shaft sleeve (20-6) are fixedly arranged in the mounting base (11);
the knob (20-2) is arranged at one end of the plane mirror rotating shaft (20-4), and the spring connecting seat (20-7) is fixedly arranged at the other end of the plane mirror rotating shaft (20-4);
the first spring mounting screw (20-8) is mounted on the mounting base (11) and is used for connecting one end of the spring (20-9); the second spring mounting screw (20-10) is mounted on the spring connecting seat (20-7) and is used for connecting the other end of the spring (20-9).
When the plane mirror (20-1) is located at the first position (4-1) and the second position (4-2), the lengths of the springs (20-9) are L1 and L2 respectively; when the plane mirror (20-1) is located between the first position (4-1) and the second position (4-2), the length of the spring (20-9) is Ln, and L1 and L2 are both smaller than Ln by adjusting the angle between the spring connecting seat (20-7) and the plane mirror rotating shaft (20-4), so that the position of the plane mirror (20-1) can be locked by the spring (20-9) when the analyzer has different functions.
When the device works, firstly, visual adjustment is carried out on a test light path by using a visual function, the plane mirror assembly (20) is adjusted to a second position (4-2) through the knob (20-2), position locking is carried out through the spring (20-9), and light passing through the tested lens (9) enters eyes of an observer after passing through the microscope objective (2), the focusing lens (3), the plane mirror assembly (20), the right-angle prism (5) and the eyepiece (6) respectively, so that visual adjustment of the test light path is realized, the test difficulty is reduced, and the test efficiency is improved; after the visual function adjustment of the image analyzer is completed, the plane reflector component (20) is adjusted to the first position (4-1) through the knob (20-2), the image analyzer is switched to the detector function, and meanwhile, stray light of a visual observation window is shielded, so that the test precision is improved, at the moment, light passing through the tested lens (9) is projected to the detector (8) after passing through the microscope objective (2) and the focusing lens (3) respectively, the image acquisition of the imaging parameters of the tested lens is realized, and the analysis and calculation of the transfer function of the tested lens are further realized.
In a second aspect, the present invention provides an image analysis method suitable for optical lens transfer function detection, the method being applied to an image analyzer apparatus as in the first aspect of the present invention, the method comprising the steps of:
the plane mirror (20-1) is placed at a first position (4-1), and the parallel light emitted by the tested lens (9) is focused through the focusing lens (3) and then transmitted to the detector (8);
or, the plane mirror (20-1) is arranged at the second position (4-2), the microscope objective (2) is used for amplifying the image formed by the measured lens (9) and emitting the image in a parallel light mode; the focusing lens (3) focuses the parallel light emitted by the microscope objective (2); the plane mirror (20-1) reflects the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to the eyepiece (6).
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An image analyzer arrangement suitable for optical lens transfer function detection, characterized by comprising a planar mirror assembly (20), said planar mirror assembly (20) comprising a planar mirror (20-1), said planar mirror (20-1) being placeable in a first position (4-1) or a second position (4-2);
when the plane mirror (20-1) is arranged at the second position (4-2), the image analyzer device is provided with a microscope objective (2), a focusing lens (3), the plane mirror (20-1), a right-angle prism (5) and an ocular (6) along the light path direction; the microscope objective (2) is used for amplifying the image formed by the tested lens (9) and emitting the image in a parallel light mode; the focusing lens (3) is used for focusing the parallel light emitted by the microscope objective (2); the plane mirror (20-1) is used for reflecting the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to an ocular (6);
when the plane mirror (20-1) is arranged at the first position (4-1), the image analyzer device is provided with a microscope objective (2), a focusing lens (3) and a detector (8) along the light path direction; and the focusing lens (3) is used for focusing the parallel light emitted by the tested lens (9) and transmitting the focused parallel light to the detector (8).
2. The image analyzer device for optical lens transfer function detection as claimed in claim 1, further comprising a mounting base (11), wherein the plane mirror assembly (20), the focusing lens (3), the detector (8), the microscope objective (2), the right-angle prism (5) and the eyepiece (6) are all arranged on the mounting base (11).
3. The image analyzer device suitable for optical lens transfer function detection as claimed in claim 2, further comprising a connection sleeve (10), wherein the connection sleeve (10) is mounted at a front end of the mounting base (11), the microscope objective (2) is mounted at a front end of the connection sleeve (10), and the focusing lens (3) is mounted inside the connection sleeve (10).
4. The image analyzer device suitable for optical lens transfer function inspection according to claim 2, further comprising a rotary base (12) and a stopper (19);
the rotary seat (12) is arranged on the upper part of the mounting base (11) and is used as an upper limit of the plane mirror assembly (20); the limiting block (19) is arranged on the mounting base (11) and is used as a lower limiting block of the plane mirror assembly (20); the planar mirror assembly (20) may be disposed between the upper limit and the lower limit.
5. The image analyzer device suitable for optical lens transfer function detection as claimed in claim 4, further comprising a rotary shaft sleeve (13), a rotary shaft (14) and a rotary shaft mounting seat (16);
the rotary shaft sleeve (13) is installed in the rotary base (12), the rotary shaft (14) is installed in the rotary shaft sleeve (13) through clearance fit, the lower end of the rotary shaft (14) is located through a shoulder of the rotary shaft, and the upper end of the rotary shaft (14) is installed at the bottom of the rotary shaft installation base (16).
6. The image analyzer device for optical lens transfer function inspection according to claim 5, further comprising a right angle prism mount (17);
right angle prism (5) are installed in right angle prism mount pad (17), right angle prism mount pad (17) are installed in pivot mount pad (16), it is right to be used for the angle of the emergent light of right angle prism (5) is adjusted.
7. The image analyzer device for optical lens transfer function inspection according to claim 5, further comprising an eyepiece mount (18), wherein the eyepiece mount (18) is mounted in the spindle mount (16) for mounting an eyepiece (6).
8. The image analyzer device for optical lens transfer function inspection as claimed in claim 2, further comprising a probe mounting seat (21), wherein the probe mounting seat (21) is mounted at the rear end of the mounting base (11) for mounting the probe (8).
9. The image analyzer device for optical lens transfer function detection as claimed in claim 2,
the plane mirror assembly (20) further comprises a knob (20-2), a first shaft sleeve (20-3), a plane mirror rotating shaft (20-4), a plane mirror mounting seat (20-5), a second shaft sleeve (20-6), a spring connecting seat (20-7), a first spring mounting screw (20-8), a spring (20-9) and a second spring mounting screw (20-10);
the plane mirror (20-1) is arranged in the plane mirror mounting seat (20-5) and is used for deflecting an optical path; the plane mirror mounting base (20-5) is fixedly arranged on the plane mirror rotating shaft (20-4); the plane mirror rotating shaft (20-4) is arranged in the first shaft sleeve (20-3) and the second shaft sleeve (20-6) in a clearance fit manner; the first shaft sleeve (20-3) and the second shaft sleeve (20-6) are fixedly installed in the installation base (11);
the knob (20-2) is installed at one end of the plane mirror rotating shaft (20-4), and the spring connecting seat (20-7) is installed and fastened at the other end of the plane mirror rotating shaft (20-4);
the first spring mounting screw (20-8) is mounted on the mounting base (11) and is used for connecting one end of the spring (20-9); the second spring mounting screw (20-10) is mounted on the spring connecting seat (20-7) and is used for connecting the other end of the spring (20-9).
10. An image analysis method suitable for optical lens transfer function detection, applied to an image analyzer device according to any one of claims 1 to 9, comprising the steps of:
the plane mirror (20-1) is arranged at a second position (4-2), and the microobjective (2) is used for amplifying the image formed by the measured lens (9) and emitting the image in a parallel light mode; the focusing lens (3) focuses the parallel light emitted by the microscope objective (2); the plane mirror (20-1) reflects the light focused by the focusing lens (3) to the right-angle prism (5); the right-angle prism (5) projects the received light to the ocular (6);
and adjusting the plane mirror (20-1) from the second position (4-2) to the first position (4-1), amplifying and focusing the parallel light emitted by the tested lens (9) through the microscope objective (2) and the focusing lens (3), and transmitting the amplified and focused parallel light to the detector (8).
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| Publication number | Priority date | Publication date | Assignee | Title |
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