CN212646048U - MTF detection device - Google Patents
MTF detection device Download PDFInfo
- Publication number
- CN212646048U CN212646048U CN202021675233.9U CN202021675233U CN212646048U CN 212646048 U CN212646048 U CN 212646048U CN 202021675233 U CN202021675233 U CN 202021675233U CN 212646048 U CN212646048 U CN 212646048U
- Authority
- CN
- China
- Prior art keywords
- sensor
- lifting
- reticle
- lens
- mtf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lens Barrels (AREA)
Abstract
The utility model relates to a MTF detection device. The device comprises a measuring rack, and a light source device, a light homogenizing plate, a reticle, a lens mounting seat and a sensor assembly which are sequentially arranged on the measuring rack along the extension direction of a Z axis; the MTF detection device also comprises a protective cylinder and a reticle adjusting device; the sensor assembly comprises a top sensor and a plurality of side sensors; the MTF detection device also comprises a control device which is connected with each photosensitive chip of the sensor component and is used for receiving image information of the measurement and detection patterns fed back by each photosensitive chip of the sensor component and calculating the MTF parameters of the tested lens according to the image information. The utility model discloses can measure the MTF characteristic of the measured lens that the object distance is very short to the accurate quality condition who obtains the measured lens.
Description
Technical Field
The utility model relates to an optical equipment field is a MTF detection device very much.
Background
The method is characterized in that a light path of back projection is used, a reticle carved with a specific pattern and a backlight source are placed at the image surface position of a measured lens, a plurality of image sensors are placed at the object surface position, and multipoint MTF data of the measured lens are obtained through focusing adjustment and image calculation. By performing software analysis on the image obtained by the image sensor, the MTF characteristic of the optical system can be obtained.
The optical path of the back-projection measurement MTF is divided into an infinite conjugate path and a finite conjugate path as shown in fig. 1. In the existing industry, the MTF characteristics of an infinite conjugate optical path distance measuring lens are more, the MTF characteristics of a finite conjugate optical path distance measuring lens are very few, and the measuring of the MTF with the very short finite distance by an endoscopic lens is more unique.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the MTF detection device can measure the MTF characteristics of the tested lens with short object distance, thereby accurately obtaining the quality condition of the tested lens.
The utility model discloses a following technical scheme realizes: an MTF detection apparatus, characterized in that: the device comprises a measuring rack, and a light source device, a light homogenizing plate, a reticle, a lens mounting seat and a sensor assembly which are sequentially arranged on the measuring rack along the extension direction of a Z axis; the reticle is provided with patterns for measurement and detection;
the MTF detection device also comprises a protection cylinder which is used for fixedly mounting the lens mounting seat on the measuring rack, the lens mounting seat is coaxially and fixedly arranged at the top of the protection cylinder, and the protection cylinder extends along the Z-axis direction and is arranged on one side of the lens mounting seat facing the light source device; the lens mounting base is used for mounting and fixing a tested lens, and the middle part of the lens mounting base is provided with a light through hole extending along the Z-axis direction; the sensor component is arranged on the other side of the lens mounting seat, which is far away from the light source device, through the measuring rack and can receive image information of a pattern for measurement and detection, which is presented by the light source device through the measured lens after passing through the light homogenizing plate and the reticle;
the MTF detection device also comprises a reticle cylinder for fixedly mounting the light source device, the light homogenizing plate and the reticle, and a reticle adjusting device for driving the reticle cylinder to move close to or far away from the lens mounting seat along the Z-axis direction; one axial end of the reticle barrel, which is provided with the reticle and the dodging plate, extends into the protective barrel, and the other axial end of the reticle barrel extends out of the protective barrel and is connected with the reticle adjusting device;
the sensor component comprises a top sensor used for collecting image information of the pattern for measurement and detection passing through the center position of the measured lens and a plurality of side sensors distributed around the top sensor and used for collecting image information of the pattern for measurement and detection passing through different view field positions of the measured lens;
the top sensor and each side sensor are composed of a substrate and a photosensitive chip arranged in the middle of one side wall of the substrate facing the mounting position of the measured lens, the photosensitive chip of the top sensor is vertically arranged relative to the extension line of the Z-axis direction, and the central line of the photosensitive chip of the top sensor is superposed with the Z-axis direction; each side sensor is respectively arranged at the periphery of the extension line of the Z axis and positioned at one side of the top sensor close to the lens mounting seat, the center line of the photosensitive chip of each side sensor is obliquely arranged along the Z axis direction, and the intersection point of the center line of the photosensitive chip of each side sensor and the Z axis is converged on the same converging point of the Z axis;
the distances between the central point of the photosensitive chip of the top sensor and the central point and the convergence point of the photosensitive chip of each side sensor are equal to the length of an object distance l of the measured lens, and the included angle between the central line of the photosensitive chip of each side sensor and the Z axis is equal to half of the field angle alpha of the measured lens;
the MTF detection device also comprises a control device which is connected with each photosensitive chip of the sensor component and is used for receiving the image information of the measurement detection pattern fed back by each photosensitive chip of the sensor component and calculating the MTF parameter of the tested lens according to the image information.
For better implementation of the scheme, the following optimization scheme is also provided:
preferably, the measuring rack comprises a microscope base mounting rack, and the protection cylinder is fixedly connected to the microscope base mounting rack;
the reticle regulating device comprises a regulating slide rail which is fixedly arranged on the microscope stand mounting rack and extends along the direction parallel to the Z axis, a regulating slide block which is connected to the regulating slide rail in a sliding way and can slide along the direction parallel to the Z axis relative to the regulating slide rail, a regulating motor which is fixedly arranged on the side wall of the regulating slide rail, a regulating transmission component which is connected between an output shaft of the regulating motor and the regulating slide block and is used for driving the regulating slide block to slide back and forth along the extending direction of the regulating slide rail, and a reticle cylinder lifting platform which is connected between the regulating slide block and the reticle cylinder and is used for driving the reticle cylinder and the regulating slide block to move synchronously; the adjusting transmission assembly comprises a nut fixedly connected with the adjusting slide block, a screw rod in threaded connection with the nut and extending along the direction parallel to the Z axis, a screw rod transmission wheel coaxially and fixedly connected to the screw rod, a motor transmission wheel coaxially and fixedly connected to an output shaft of the adjusting motor, and a transmission belt connected between the screw rod transmission wheel and the motor transmission wheel.
In order to facilitate the adjustment of the coaxial centering of the optical axis of the measured lens and the image center of the reticle, the MTF detection device further comprises an XY centering adjustment sliding table which is connected between the protection cylinder and the lens base installation frame and used for driving the protection cylinder to move along the X-axis direction or the Y-axis direction relative to the lens base installation frame so that the optical axis of the measured lens and the image center of the reticle can be coaxially centered.
In order to be convenient for adapting to the detection of different tested lenses and the placement and installation of the tested lenses, the measuring rack further comprises a sensor installation rack for installing a sensor assembly, and the MTF detection device further comprises a lifting assembly which is connected between the sensor assembly and the sensor installation rack and is used for driving the sensor assembly to reciprocate up and down relative to the sensor installation rack along the Z-axis direction;
the lifting assembly comprises a sensor fixing frame for mounting and fixing each sensor substrate of the sensor assembly, a lifting screw rod which is arranged in a manner of extending parallel to the Z-axis direction and is rotatably connected to the sensor mounting frame, more than one lifting guide rod which is arranged in a manner of being parallel to the lifting screw rod and is distributed beside the lifting screw rod, a lifting platform which is in threaded connection with the lifting screw rod and is movably connected with the lifting guide rod and can move up and down relative to the lifting guide rod, and a lifting driving assembly for driving the lifting screw rod to rotate; the sensor fixing frame is arranged on the lifting platform;
the lifting driving assembly comprises a lifting driving motor fixedly mounted on the sensor mounting rack, a lifting motor driving wheel fixedly arranged on an output shaft of the lifting driving motor, a lifting screw rod driving wheel fixedly arranged on an axial free end of the lifting screw rod, and a lifting driving belt in transmission connection between the lifting motor driving wheel and the lifting screw rod driving wheel.
In order to facilitate the adjustment of the central axis of the sensor component to be coaxial with the optical axis of the measured lens, the MTF detection device further comprises a second XY adjustment sliding table which is connected to the lifting platform and between the sensor fixing frame and used for driving the sensor fixing frame and the sensor component to move along the X-axis direction or the Y-axis direction relative to the lifting platform.
Preferably, the side sensors are four in number and evenly distributed around the Z-axis.
Preferably, the measured lens is an endoscope lens.
Preferably, the size of each photosensitive chip of the sensor assembly is: two points and one fifth of an inch.
Compared with the prior art, the utility model has the advantages that:
1. the utility model provides a MTF detection device, the device can measure the object distance and very short by the MTF characteristic of lens to the accurate quality condition who obtains by the lens.
2. The utility model relates to a MTF detection device, the device still are equipped with XY centering adjustment slip table, are convenient for adjust the optical axis ability of being surveyed the lens and the coaxial centering in image center of reticle, have the auto focus function, can compatible different focuses by the detection of lens.
3. The utility model relates to a MTF detection device, the device still are equipped with lifting unit, can make things convenient for in the detection of different measured lens and the installation of placing of measured lens.
4. The utility model relates to a MTF detection device, the device still are equipped with second XY centering adjustment slip table, and the central axis of being convenient for adjust sensor subassembly is coaxial with the optical axis of measurand lens.
Drawings
FIG. 1 is a diagram of a conventional infinite conjugate optical path;
fig. 2 is a light path diagram of the MTF detection apparatus of the present invention;
fig. 3 is a schematic three-dimensional structure diagram of the MTF detection apparatus of the present invention;
fig. 4 is a schematic view of a part of the structure of the MTF detection apparatus of the present invention;
fig. 5 is a schematic structural diagram of a sensor module in the MTF detection apparatus of the present invention;
fig. 6 is a schematic diagram of a partial structure of the MTF detection apparatus of the present invention;
FIG. 7 is a cross-sectional view A-A of FIG. 6;
fig. 8 is a schematic view of a part of the structure of the MTF detection apparatus of the present invention;
FIG. 9 is a schematic view of the internal structure of FIG. 8;
fig. 10 is a schematic view of a part of the structure of the MTF detection apparatus of the present invention;
FIG. 11 is an exploded view of FIG. 8;
fig. 12 is a schematic view of a part of the structure of the MTF detection apparatus of the present invention;
fig. 13 is a schematic diagram six of a partial structure of the MTF detection apparatus of the present invention;
fig. 14 is a schematic structural view of fig. 12 with the sensor assembly, the sensor fixing frame, and the second XY adjustment slide table removed.
Description of reference numerals: 1-a measuring frame, 11-a lens seat mounting frame, 12-a sensor mounting frame, 2-a light source device, 3-a light homogenizing plate, 4-a reticle, 5-a lens mounting frame, 6-a sensor component, 61-a top sensor, 62-a side sensor, 7-a protective cylinder, 8-a reticle cylinder, 9-a reticle adjusting device, 91-an adjusting slide rail, 92-an adjusting slide block, 93-an adjusting motor, 94-an adjusting transmission component, 941-a nut, 942-a screw rod, 943-a screw rod transmission wheel, 944-a motor transmission wheel, 945-a transmission belt, 95-a reticle cylinder lifting platform, a-a measured lens head, b-XY centering adjusting sliding table, c-a lifting component, c 1-a sensor fixing frame, c 2-a lifting screw rod, c 3-a lifting guide rod, c 4-a lifting platform, c 5-a lifting driving component, c 51-a lifting driving motor, c 52-a lifting motor driving wheel, c 53-a lifting screw rod driving wheel, c 54-a lifting transmission belt, d-a second XY adjusting sliding table, an e-collimating lens, an f-image sensor, a g-convergent point, an l-object distance of a measured lens and an alpha-field angle of the measured lens.
Detailed Description
The invention is explained in detail below with reference to the accompanying drawings:
2-14, an MTF detection apparatus, comprising: the device comprises a measuring rack 1, and a light source device 2, a light homogenizing plate 3, a reticle 4, a lens mounting seat 5 and a sensor assembly 6 which are sequentially arranged on the measuring rack 1 along the extension direction of a Z axis; the reticle 4 is provided with patterns for measurement and detection;
the MTF detection device further comprises a protection cylinder 7 which is used for fixedly mounting the lens mounting seat 5 on the measuring rack 1, the lens mounting seat 5 is coaxially and fixedly arranged at the top of the protection cylinder 7, and the protection cylinder 7 extends along the Z-axis direction and is arranged on one side, facing the light source device 2, of the lens mounting seat 5; the lens mounting base 5 is used for mounting and fixing a measured lens a, and the middle part of the lens mounting base 5 is provided with a light through hole extending along the Z-axis direction; the sensor assembly 6 is arranged on the other side of the lens mounting seat 5, which is far away from the light source device 2, through the measuring frame 1 and can receive image information of a pattern for measurement and detection, which is presented by the light source device 2 after passing through the light homogenizing plate 3 and the reticle 4 and penetrating through the measured lens a;
the MTF detection device also comprises a reticle cylinder 8 for fixedly mounting the light source device 2, the dodging plate 3 and the reticle 4, and a reticle adjusting device 9 for driving the reticle cylinder 8 to move close to or far away from the lens mounting base 5 along the Z-axis direction; one axial end of the reticle barrel 8, which is provided with the reticle 4 and the dodging plate 3, extends into the protective barrel 7, and the other axial end of the reticle barrel 8 extends out of the protective barrel 7 and is connected with a reticle adjusting device 9;
the sensor component 6 comprises a top sensor 61 for collecting the image information of the pattern for measurement and detection passing through the center position of the measured lens a, and a plurality of side sensors 62 distributed around the top sensor 61 for collecting the image information of the pattern for measurement and detection passing through different view field positions of the measured lens a;
the top sensor 61 and each side sensor 62 are composed of a substrate and a photosensitive chip mounted in the middle of a side wall of the substrate facing the mounting position of the measured lens 1, the photosensitive chip of the top sensor 61 is vertically arranged relative to the extension line of the Z-axis direction, and the central line of the photosensitive chip of the top sensor 61 coincides with the Z-axis direction; each side sensor 62 is respectively arranged around the extension line of the Z axis and positioned at one side of the top sensor 61 close to the lens mounting seat 5, the center line of the photosensitive chip of each side sensor 62 is obliquely arranged along the Z axis direction, and the intersection points of the center line of the photosensitive chip of each side sensor 62 and the Z axis are converged at the same convergence point g of the Z axis;
the distances between the central point of the photosensitive chip of the top sensor 61 and the central point of the photosensitive chip of each side sensor 62 and the convergence point g are equal to the length of the object distance l of the measured lens, and the included angle between the central line of the photosensitive chip of each side sensor 62 and the Z axis is equal to half of the field angle alpha of the measured lens;
the MTF detection device further comprises a control device connected with each photosensitive chip of the sensor assembly 6 and used for receiving image information of the measurement detection pattern fed back by each photosensitive chip of the sensor assembly 6 and calculating the MTF parameter of the measured lens according to the image information.
For better implementation of the scheme, the following optimization scheme is also provided:
preferably, the measuring rack 1 comprises a lens holder mounting rack 11, and the protective cylinder 7 is fixedly connected to the lens holder mounting rack 11;
the reticle regulating device 9 comprises a regulating slide rail 91 which is fixedly installed on the microscope stand installation frame 11 and extends along the direction parallel to the Z axis, a regulating slide block 92 which is slidably connected to the regulating slide rail 91 and can slide along the direction parallel to the Z axis relative to the regulating slide rail 91, a regulating motor 93 which is fixedly installed on the side wall of the regulating slide rail 91, a regulating transmission assembly 94 which is connected between the output shaft of the regulating motor 93 and the regulating slide block 92 and is used for driving the regulating slide block 92 to slide back and forth along the extending direction of the regulating slide rail 91, and a reticle cylinder lifting platform 95 which is connected between the regulating slide block 92 and the reticle cylinder 8 and is used for driving the reticle cylinder 8 and the regulating slide block 92 to synchronously move; the adjusting transmission assembly 94 includes a nut 941 fixedly connected to the adjusting slider 92, a screw 942 threadedly connected to the nut 941 and extending in a direction parallel to the Z axis, a screw transmission wheel 943 coaxially and fixedly connected to the screw 942, a motor transmission wheel 944 coaxially and fixedly connected to an output shaft of the adjusting motor 93, and a transmission belt 945 connected between the screw transmission wheel 943 and the motor transmission wheel 944.
In order to facilitate the adjustment of the coaxial alignment of the optical axis of the measured lens and the image center of the reticle, the MTF detection device further comprises an XY alignment adjustment sliding table b connected between the protection cylinder 7 and the lens base installation frame 11 and used for driving the protection cylinder 7 to move along the X-axis direction or the Y-axis direction relative to the lens base installation frame 11 so that the optical axis of the measured lens a and the image center of the reticle 4 can be coaxially aligned.
In order to facilitate the adaptation to the detection of different tested lenses and the placement and installation of the tested lenses, the measurement rack 1 further comprises a sensor installation rack 12 for installing the sensor component 6, and the MTF detection device further comprises a lifting component c connected between the sensor component 6 and the sensor installation rack 12 and used for driving the sensor component 6 to reciprocate up and down relative to the sensor installation rack 12 along the Z-axis direction;
the lifting assembly c comprises a sensor fixing frame c1 for mounting and fixing each sensor substrate of the sensor assembly 6, a lifting screw rod c2 which is arranged in parallel with the Z-axis direction in an extending way and is rotatably connected to the sensor mounting frame 12, more than one lifting guide rod c3 which is arranged in parallel with the lifting screw rod c2 and is distributed at the side of the lifting screw rod c2, a lifting platform c4 which is in threaded connection with the lifting screw rod c2 and is movably connected with the lifting guide rod c3 and can move up and down relative to the lifting guide rod c3, and a lifting driving assembly c5 for driving the lifting screw rod c2 to rotate; the sensor fixing frame c1 is installed on the lifting platform c 4;
the lifting driving assembly c5 comprises a lifting driving motor c51 fixedly mounted on the sensor mounting frame 12, a lifting motor driving wheel c52 fixedly arranged on an output shaft of the lifting driving motor c51, a lifting screw driving wheel c53 fixedly arranged on the axial free end of the lifting screw c2, and a lifting driving belt c54 in transmission connection between the lifting motor driving wheel c52 and the lifting screw driving wheel c 53.
In order to facilitate the adjustment of the central axis of the sensor component to be coaxial with the optical axis of the measured lens, the MTF detection device further comprises a second XY adjustment sliding table d connected between the lifting platform c4 and the sensor fixing frame c1 and used for driving the sensor fixing frame c1 and the sensor component 6 to move along the X-axis direction or the Y-axis direction relative to the lifting platform c 4.
Preferably, the side sensors 62 are four in number and evenly distributed about the Z-axis.
Preferably, the measured lens a is an endoscope lens.
Preferably, the size of each photosensitive chip of the sensor assembly 6 is: two points and one fifth of an inch.
While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.
Claims (8)
1. An MTF detection apparatus, characterized in that: the device comprises a measuring rack (1), and a light source device (2), a light homogenizing plate (3), a reticle (4), a lens mounting seat (5) and a sensor assembly (6) which are sequentially arranged on the measuring rack (1) along the extension direction of a Z axis; the reticle (4) is provided with patterns for measurement and detection;
the MTF detection device further comprises a protection cylinder (7) which is used for fixedly mounting the lens mounting seat (5) on the measuring rack (1), the lens mounting seat (5) is coaxially and fixedly arranged at the top of the protection cylinder (7), and the protection cylinder (7) extends along the Z-axis direction and is arranged on one side, facing the light source device (2), of the lens mounting seat (5); the lens mounting seat (5) is used for mounting and fixing a tested lens (a), and the middle part of the lens mounting seat (5) is provided with a light through hole extending along the Z-axis direction; the sensor component (6) is arranged on the other side of the lens mounting seat (5) away from the light source device (2) through the measuring frame (1) and can receive image information of a pattern for measurement and detection, which is presented by the light source device (2) through the measured lens (a) after passing through the light homogenizing plate (3) and the reticle (4);
the MTF detection device also comprises a reticle cylinder (8) for fixedly mounting the light source device (2), the light homogenizing plate (3) and the reticle (4), and a reticle adjusting device (9) for driving the reticle cylinder (8) to move close to or far away from the lens mounting seat (5) along the Z-axis direction; one axial end of the reticle cylinder (8), which is provided with the reticle (4) and the light homogenizing plate (3), extends into the protective cylinder (7), and the other axial end of the reticle cylinder (8) extends out of the protective cylinder (7) and is connected with a reticle adjusting device (9);
the sensor component (6) comprises a top sensor (61) used for collecting image information of the pattern for measurement and detection passing through the center position of the measured lens (a), and a plurality of side sensors (62) distributed around the top sensor (61) and used for collecting image information of the pattern for measurement and detection passing through different view field positions of the measured lens (a);
the top sensor (61) and each side sensor (62) are composed of a substrate and a photosensitive chip arranged in the middle of one side wall of the substrate facing the mounting position of the measured lens (a), the photosensitive chip of the top sensor (61) is vertically arranged relative to the extension line of the Z-axis direction, and the central line of the photosensitive chip of the top sensor (61) is superposed with the Z-axis direction; each side sensor (62) is respectively arranged on the periphery of the extension line of the Z axis and is positioned on one side of the top sensor (61) close to the lens mounting seat (5), the center line of the photosensitive chip of each side sensor (62) is obliquely arranged with the Z axis direction, and the intersection points of the center line of the photosensitive chip of each side sensor (62) and the Z axis are converged on the same convergence point (g) of the Z axis;
the distances between the central point of the photosensitive chip of the top sensor (61) and the central point of the photosensitive chip of each side sensor (62) and the convergent point (g) are equal to the length of an object distance l of the measured lens, and the included angle between the central line of the photosensitive chip of each side sensor (62) and the Z axis is equal to half of the field angle alpha of the measured lens;
the MTF detection device also comprises a control device which is connected with each photosensitive chip of the sensor component (6) and is used for receiving the image information of the measurement detection pattern fed back by each photosensitive chip of the sensor component (6) and calculating the MTF parameter of the tested lens according to the image information.
2. The MTF detection apparatus according to claim 1, wherein: the measuring rack (1) comprises a microscope base mounting rack (11), and the protective cylinder (7) is fixedly connected to the microscope base mounting rack (11);
the reticle adjusting device (9) comprises an adjusting slide rail (91) which is fixedly installed on the microscope base installing frame (11) and extends along the direction parallel to the Z axis, an adjusting slide block (92) which is connected to the adjusting slide rail (91) in a sliding mode and can slide along the direction parallel to the Z axis relative to the adjusting slide rail (91), an adjusting motor (93) which is fixedly installed on the side wall of the adjusting slide rail (91), an adjusting transmission component (94) which is connected between an output shaft of the adjusting motor (93) and the adjusting slide block (92) and used for driving the adjusting slide block (92) to slide in a reciprocating mode along the extending direction of the adjusting slide rail (91), and a reticle barrel lifting platform (95) which is connected between the adjusting slide block (92) and the reticle barrel (8) and used for driving the reticle barrel (8) and the adjusting slide block (92) to move synchronously; the adjusting transmission assembly (94) comprises a nut (941) fixedly connected with the adjusting slider (92), a screw rod (942) in threaded connection with the nut (941) and extending in the direction parallel to the Z axis, a screw rod transmission wheel (943) coaxially and fixedly connected to the screw rod (942), a motor transmission wheel (944) coaxially and fixedly connected to an output shaft of the adjusting motor (93), and a transmission belt (945) connected between the screw rod transmission wheel (943) and the motor transmission wheel (944).
3. The MTF detection apparatus according to claim 2, wherein: the MTF detection device also comprises an XY centering adjusting sliding table (b) which is connected between the protection cylinder (7) and the microscope base mounting rack (11) and used for driving the protection cylinder (7) to move along the X-axis direction or the Y-axis direction relative to the microscope base mounting rack (11) so that the optical axis of the measured lens (a) can be coaxially centered with the image center of the reticle (4).
4. The MTF detection apparatus according to claim 1, wherein: the measurement rack (1) further comprises a sensor installation rack (12) used for installing the sensor component (6), and the MTF detection device further comprises a lifting component (c) which is connected between the sensor component (6) and the sensor installation rack (12) and used for driving the sensor component (6) to reciprocate along the Z-axis direction relative to the sensor installation rack (12);
the lifting assembly (c) comprises a sensor fixing frame (c1) used for installing and fixing each sensor substrate of the sensor assembly (6), a lifting screw rod (c2) which is arranged in parallel to the Z-axis direction in an extending mode and is connected to the sensor installing frame (12) in a rotating mode, more than one lifting guide rod (c3) which is arranged in parallel to the lifting screw rod (c2) and distributed on the side of the lifting screw rod (c2), a lifting platform (c4) which is connected to the lifting screw rod (c2) in a threaded mode and is movably connected with the lifting guide rod (c3) and can move up and down relative to the lifting guide rod (c3), and a lifting driving assembly (c5) used for driving the lifting screw rod (c2) to rotate; the sensor fixing frame (c1) is installed on the lifting platform (c 4);
the lifting driving assembly (c5) comprises a lifting driving motor (c51) fixedly mounted on the sensor mounting rack (12), a lifting motor driving wheel (c52) fixedly arranged on an output shaft of the lifting driving motor (c51), a lifting lead screw driving wheel (c53) fixedly arranged on the axial free end of the lifting lead screw (c2), and a lifting driving belt (c54) in transmission connection between the lifting motor driving wheel (c52) and the lifting lead screw driving wheel (c 53).
5. The MTF detection apparatus according to claim 4, wherein: the MTF detection device further comprises a second XY adjusting sliding table (d) which is connected between the lifting platform (c4) and the sensor fixing frame (c1) and used for driving the sensor fixing frame (c1) and the sensor assembly (6) to move along the X-axis direction or the Y-axis direction relative to the lifting platform (c 4).
6. The MTF detection apparatus according to claim 1, wherein: the side sensors (62) are four in number and are evenly distributed around the Z axis.
7. The MTF detection apparatus according to claim 1, wherein: the measured lens (a) is an endoscope lens.
8. The MTF detection apparatus according to any one of claims 1-7, wherein: the size of each photosensitive chip of the sensor assembly (6) is as follows: two points and one fifth of an inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675233.9U CN212646048U (en) | 2020-08-12 | 2020-08-12 | MTF detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675233.9U CN212646048U (en) | 2020-08-12 | 2020-08-12 | MTF detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212646048U true CN212646048U (en) | 2021-03-02 |
Family
ID=74786195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021675233.9U Active CN212646048U (en) | 2020-08-12 | 2020-08-12 | MTF detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212646048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916508A (en) * | 2021-10-11 | 2022-01-11 | 上海千映智能科技有限公司 | Small-sized lens detection device and detection method thereof |
-
2020
- 2020-08-12 CN CN202021675233.9U patent/CN212646048U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916508A (en) * | 2021-10-11 | 2022-01-11 | 上海千映智能科技有限公司 | Small-sized lens detection device and detection method thereof |
| CN113916508B (en) * | 2021-10-11 | 2024-01-26 | 上海千映智能科技有限公司 | Small lens detection device and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106903553B (en) | Micro-diameter milling tool wear detecting method | |
| CN110057554B (en) | MTF detection device and method for imaging quality of zoom lens | |
| CN104122077A (en) | Method and device for measuring modulation transfer functions of optic lenses through infinite conjugated light paths | |
| CN108732780A (en) | A kind of automatic debugging device of optical lens and method | |
| CN105203304B (en) | Magnifying power method surveys the optical bench of focal length | |
| CN107084671B (en) | A kind of recessed bulb diameter measuring system and measurement method based on three wire configuration light | |
| WO2022033391A1 (en) | Super-depth-of-field microscopic quick measurement device and measurement method | |
| CN111598931A (en) | Monocular vision system imaging parameter calibration device and method | |
| CN211830951U (en) | Image acquisition device | |
| CN112097642B (en) | Three-dimensional cross hole position degree detection instrument and detection method | |
| CN212646048U (en) | MTF detection device | |
| CN110836641A (en) | Detection method and detection equipment for three-dimensional size of part special-shaped surface microstructure | |
| CN205067059U (en) | Optical bench of focus is surveyed to magnifying power method | |
| CN101872059A (en) | Automatic focusing system and method thereof of OTF (Optical Transfer Function) tester | |
| CN211827005U (en) | Multi-functional detection device of five-axis numerical control machine tool based on multi-eye vision | |
| CN112485261A (en) | Device and method for detecting micro-bubbles in glasses lens | |
| CN211262128U (en) | Detection equipment for three-dimensional size of part special-shaped surface microstructure | |
| KR20210139159A (en) | System and method for aligning multiple lens elements | |
| CN108534621A (en) | A kind of glass linear scale self-checking device based on machine vision | |
| CN108055446A (en) | Burnt optical system after removable sensor compensation | |
| CN209707074U (en) | The MTF detection device of zoom lens image quality | |
| CN106679938B (en) | A kind of motorized zoom lens focusing curve detection system and method | |
| CN210005216U (en) | transmitted wavefront detection devices | |
| CN110849266B (en) | Telecentric lens telecentricity debugging method of image measuring instrument | |
| CN207675139U (en) | One-touch 3D profile measurers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |