CN116203697A - Optical mechanism and optical equipment - Google Patents

Abstract

The invention discloses an optical mechanism and an optical device, wherein the optical mechanism comprises: the laser image sensor is used for emitting laser beams, collecting the laser beams reflected by the surface of the measured object and carrying out algorithm processing on the received optical signals; the optical lens is an optical imaging module and is used for observing an object to be measured and is a carrier for installing and fixing the sensor mechanism and the motor transmission mechanism. The laser image sensor is based on the principle of eccentric defocusing of light beams, the detector can obtain the light spot change form of defocusing up and down in a certain range of a focus, and the defocusing direction is judged and the distance between the infinity conjugate objective and the measured object is calculated through the phenomenon. The combination of the optical lens and the motor transmission mechanism realizes accurate imaging and automatic focusing. In the detection process of combining the zooming and zooming optical lens, the product can be clearly observed in automatic focusing under different multiplying powers without changing objective lenses with different multiplying powers, so that the cost and manpower resources are saved, and the working efficiency is improved.

Description

Optical mechanism and optical equipment

Technical Field

The invention relates to the technical field of industrial lenses, in particular to an optical mechanism and optical equipment.

Background

In the modern industrial technical field, the position of a lens is usually adjusted according to the distance between detection targets before detection, so that an industrial camera obtains the clearest image, but in practical application, the flatness of a product and the product with the height difference feature can change the distance between the product and an optical lens, and the depth of field of the lens is exceeded, so that imaging is unclear. Because of the diversity of the products, the products are observed by frequently replacing lenses with different multiplying powers, and the products are complex, time-consuming and labor-consuming, and the working efficiency is affected. Meanwhile, customers have high requirements on the accuracy and the speed of product detection, and the existing industrial lens can not accurately and rapidly carry out clear detection on focusing of products in actual scene test.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the invention is to propose an optical mechanism comprising:

the laser image sensor is used for emitting laser beams, collecting the laser beams reflected by the surface of the measured object and carrying out algorithm processing on the received optical signals;

the optical lens is communicated with the laser image sensor and is used for receiving the laser beam emitted by the laser image sensor, reflecting the laser beam to the objective lens and converging the laser beam to the surface of the measured object, and finally, reflecting the laser beam through the surface of the measured object and collecting the laser beam by the laser image sensor;

the laser image sensor includes:

a mounting box;

the laser is arranged in the mounting box and emits a laser beam towards a specified direction;

the knife edge is arranged in the appointed direction and is suitable for shielding the laser beam to form an eccentric laser beam in a semicircular light spot shape;

the lens assembly comprises a reflecting mirror and a beam splitter, wherein the reflecting mirror is arranged in the preset direction of the laser beam in the semicircular light spot form and reflects the eccentric laser beam in the semicircular light spot form, and when the laser beam continuously propagates to the reflecting mirror along the first light path direction through the knife edge, the reflecting mirror deflects the laser beam to the second light path direction and reflects the laser beam to the beam splitter so as to be output to an emergent window lens group through the beam splitter and then output to the optical lens;

the optical lens includes:

an optical system structure having a series of imaging lens groups and their fixed lenses, a structural work piece of a motor;

the servo motor is arranged on the optical system structure;

the transmission assembly is connected with the servo motor;

the objective lens seat is connected with the transmission assembly to communicate the optical system structure with the mounting box, and moves along a straight line along with the transmission assembly when the transmission assembly is driven, and the beam splitter outputs the laser beam to the objective lens assembly along a third light path when the reflecting mirror deflects the laser beam to the second light path direction and reflects the laser beam to the beam splitter;

the objective lens assembly is connected with the objective lens seat, when the beam splitter outputs the laser beam to the objective lens assembly along a third light path, the laser beam is converged to the surface of the object to be measured through the objective lens assembly, the surface of the object to be measured reflects the laser beam to form a reflected beam, the reflected beam propagates to the beam splitter through the objective lens assembly, and the beam splitter splits the reflected beam into two reflected laser beams and deflects the two reflected laser beams to a fourth light path and a fifth light path respectively.

Preferably, the light splitting sheet includes:

the first light splitting piece is arranged opposite to the reflecting mirror and deflects the laser beam reflected by the reflecting mirror to the six-light path direction to reflect to the second light splitting piece;

the second beam splitter is arranged at the communication part of the mounting box and the optical system structure and is positioned on the path of the sixth optical path so as to deflect and reflect the laser beam to the third optical path.

Preferably, the mounting box is provided with a through hole, the objective lens seat is mounted in the through hole, and the through hole is positioned in the light emitting direction of the second light splitting piece;

an exit window is also arranged in the mounting box, is positioned between the first light splitting sheet and the second light splitting sheet and is positioned on the path of a sixth light path;

a lens is arranged in the emergent window and is suitable for transmitting the laser beam reflected by the first beam splitter towards the second beam splitter;

the outside of the installation box is provided with a reflected light beam which propagates into the installation box, and the reflected light beam is transmitted into the installation box towards the second light splitting piece.

Preferably, the laser image sensor further comprises:

the detector is arranged in the mounting box and positioned on the path of the seventh optical path to receive the optical signal;

preferably, the laser image sensor further comprises an adjusting piece, the reflecting mirror and the right-angle prism are respectively fixed on the two adjusting pieces, the reflecting mirror is adjusted and fixed in the mounting box through a jackscrew to achieve fine adjustment of the propagation direction of the light path, and the right-angle prism is slid through the U-shaped groove to achieve fine adjustment of the adjustment focal length.

Preferably, the optical system structure comprises a motor outer cover and a bottom plate, and the motor outer cover and the bottom plate are detachably connected so as to install and fix the servo motor and the transmission assembly.

Preferably, the transmission assembly comprises:

the two ends of the driving plate in the length direction are respectively fixed with a motor shaft of the servo motor and move along the length direction along with the motor shaft when the servo motor works;

one end of the connecting plate is fixed with the side surface of the driving plate in the length direction, and the other end of the connecting plate is connected with the objective lens seat; wherein, the drive plate includes:

a first connecting part connected to one end of the motor shaft;

the second connecting part is connected to the other end of the motor shaft;

the transmission part is positioned between the first connecting part and the second connecting part and is in sliding connection with the bottom plate.

Preferably, a sliding component is arranged at the bottom of the transmission part, and the transmission part is in sliding connection with the bottom plate through the sliding component; wherein, the slip subassembly includes:

the sliding rail is arranged on the bottom plate and is arranged along the length direction of the bottom plate;

the sliding block is slidably arranged on the sliding rail and is fixed with the transmission part, so that the transmission part moves along with the sliding block on the sliding rail.

Preferably, the optical lens further comprises a reading module and a wiring terminal, wherein the reading module is arranged on the bottom plate along the vertical direction and is close to the servo motor and the transmission assembly;

one end of the wiring terminal is electrically connected to the servo motor, and the other end of the wiring terminal is externally connected to the main control module.

The embodiment of the invention also provides optical equipment comprising the optical mechanism.

The scheme of the invention at least comprises the following beneficial effects: the laser image sensor is designed based on the principle of eccentric defocusing of light beams to realize judgment of defocusing direction and distance from a lens to a product, and the combination of the optical lens realizes accurate imaging and automatic focusing, so that the product is clearly observed in automatic focusing without changing objective lenses with different multiplying powers in the detection process of the combination of the zoom optical lens, thereby saving cost and manpower resources and improving the working efficiency.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings can be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of an optical mechanism provided in an embodiment of the invention;

FIG. 2 is an exploded view of the structure of an optical mechanism provided in an embodiment of the invention;

FIG. 3 is a schematic view of the beam structure of an optical mechanism provided in an embodiment of the invention;

FIG. 4 is a schematic diagram of the laser beam structure of an optical mechanism provided in an embodiment of the invention;

FIG. 5 is a schematic diagram of the reflected beam structure of an optical mechanism provided in an embodiment of the invention;

FIG. 6 is a schematic view of an optical path structure of an optical mechanism according to an embodiment of the present invention

FIG. 7 is a schematic diagram of a laser image sensor provided in an embodiment of the invention;

FIG. 8 is a schematic view of a mounting box structure provided in an embodiment of the invention;

fig. 9 is a schematic view of an optical path structure of a laser image sensor provided in an embodiment of the invention;

FIG. 10 is a schematic diagram of an optical lens according to an embodiment of the present invention;

fig. 11 is a structural exploded view of an optical lens provided in an embodiment of the present invention;

FIG. 12 is an exploded view of the drive assembly and slide assembly provided in an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a servo motor provided in an embodiment of the present invention.

Reference numerals illustrate:

1. the laser image sensor, 11, the mounting box, 12, the laser, 13, the knife edge, 14, the reflector, 15, the first beam splitter, 16, the lens group, 17, the second beam splitter, 18, the detector, 19, the right-angle prism, 110 and the adjusting piece; 2. the device comprises an optical lens, an optical system structure, an imaging optical system lens group, an objective lens, an object to be measured, an industrial camera and an industrial camera, wherein the optical lens, the optical system structure and the imaging optical system lens group are respectively arranged at the same time; 31. a first optical path, 32, a second optical path, 33, a third optical path, 34, a fourth optical path, 35, a fifth optical path, 36, a sixth optical path, 37, a seventh optical path; 41. motor cover, 42, servo motor, 421, motor shaft, 43, drive plate, 430, first connection, 431, second connection, 432, transmission, 44, objective lens holder, 45, slide rail, 46, slider, 47, binding post, 48, reading module, 49, bottom plate, 410, objective lens assembly.

The realization of the object, the functional characteristics and the advantages of the invention will be further described with reference to the accompanying drawings in connection with the embodiments.

Detailed Description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are intended to illustrate the invention and should not be construed as limiting the invention, based on the embodiments in the invention, all other embodiments obtained by a person of ordinary skill in the art without making inventive efforts are within the scope of protection of the invention.

In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the invention will be understood by those skilled in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

An optical mechanism and an optical apparatus according to an embodiment of the invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 13, an optical mechanism provided in an embodiment of the invention includes: the laser image sensor 1 is used for emitting laser beams and collecting the laser beams reflected by the surface of the measured object 24 and carrying out algorithm processing on the received optical signals; the optical lens 2 is communicated with the laser image sensor 1, and is used for receiving the laser beam emitted by the laser image sensor 1, reflecting the laser beam to the surface of the measured object 24, and finally, collecting the laser beam by the laser image sensor 1 after being reflected by the surface of the measured object; the optical mechanism further comprises an industrial camera 25, the camera 25 being connected to the optical lens 2 for receiving the laser beam reflected by the object 24 to be measured. The laser image sensor 1 includes: a mounting box 11; a laser 12, the laser 12 being provided in the mounting box 11 and emitting a laser beam toward a predetermined direction; a knife edge 13, the knife edge 13 is arranged in a designated direction and is suitable for shielding the laser beam to form an eccentric laser beam in a semicircular light spot shape; the mirror assembly comprises a reflecting mirror 14 and a beam splitting sheet, the reflecting mirror 14 is arranged in the appointed direction of the laser beam in the semicircular light spot shape and reflects the eccentric laser beam in the semicircular light spot shape, when the laser beam continuously propagates along the direction of the first optical path 311 and irradiates the reflecting mirror 14 through the knife edge 13, the reflecting mirror 14 deflects the laser beam to the direction of the second optical path 32 and reflects the laser beam to the beam splitting sheet, so that the laser beam is output to the emergent window lens group through the beam splitting sheet and is further output to the optical lens 2. Wherein the optic assembly further comprises an optical lens that, in conjunction with the mirror 14 and the beam splitter, performs optical imaging. The laser beam is emitted towards a specified direction through the laser 12, when the laser passes through the knife edge 13, the knife edge 13 shields the laser beam and obtains a laser beam in a semicircular light spot shape, the laser beam in the semicircular light spot shape is irradiated to the reflecting mirror 14, the reflecting mirror 14 irradiates the laser beam in the semicircular light spot shape to the light splitting sheet, and the light splitting sheet reflects the laser beam in the semicircular light spot shape to the outside of the mounting box 11 and then to the inside of the optical lens 2; after reflecting the laser beam in the form of a semicircle light spot to the outside of the installation box 11, the laser beam in the form of the semicircle light spot is irradiated to an external measured object 24 to be measured through the optical lens 2, and then the laser beam is reflected by the measured object 24 to the inside of the installation box 11, so that the defocusing direction can be obtained.

The optical lens 2 includes: optical system structure 21, servo motor 42, drive assembly, objective lens holder 44, objective lens assembly 410; the optical lens 2 further includes an imaging optical system lens group 22, and the imaging optical system lens group 22 and the objective lens 23 constitute an imaging system. The optical system structure 21 includes a motor cover 41 and a base plate 49, and the motor cover 41 and the base plate 213 are detachably connected to mount and fix the servo motor 42 and the transmission assembly. The servo motor 42 is arranged on the bottom plate 49; the transmission assembly is connected with a servo motor 42; the objective lens seat 44 is used for installing an objective lens structure, and the objective lens seat 44 is connected with the transmission component so as to communicate the optical system structure 21 with the installation box 11, so that the optical paths of the objective lens, the imaging lens and the laser image sensor 1 are on the same optical axis. When the transmission assembly is driven to move along a straight line along with the transmission assembly, when the reflecting mirror 14 deflects the laser beam to the direction of the second optical path 32 and reflects the laser beam to the light splitting sheet, the light splitting sheet outputs the laser beam to the objective lens assembly along the third optical path 33, wherein a pipe orifice is arranged at the upper end of the optical system structure 21 and is used for installing a lens pipe, the objective lens assembly 410 is connected with the objective lens seat 44, and when the light splitting sheet outputs the laser beam to the objective lens 23 in the objective lens assembly 410 along the third optical path 33, the laser beam is converged to the surface of the measured object 24 through the objective lens 23 in the objective lens assembly 410, so that the measured object 24 can be accurately captured. The surface of the object 24 to be measured reflects the laser beam to form a reflected beam, and the reflected beam is irradiated onto a beam splitter (the second beam splitter 17 of the beam splitter) through the objective lens assembly 410, and the beam splitter (the second beam splitter 17 of the beam splitter) splits the reflected beam into two reflected laser beams, and deflects to the fourth optical path 34 and the fifth optical path 35, respectively. It is understood that the servo motor 42 and the drive assembly may be in driving engagement with each other. The objective lens assembly 410 is mounted in the direction of the third optical path 33 of the optical lens 2. The objective lens assembly 410 may be referred to as an objective lens comprising lenses or a single standard objective lens, and functions to optically image and converge the laser beam onto the surface of the object 24 under test. When the servo motor 42 outputs a control signal and drives the transmission assembly to move, the transmission assembly drives the objective lens seat 44 to reciprocate along the vertical direction, so that zooming and zooming are realized in the detection process.

In the embodiment, the laser image sensor 1 is adopted to confirm the defocusing direction, and the optical lens 2 is combined to realize automatic focusing, so that lenses with different multiplying powers are not required to be changed to observe products in the detection process, the cost and manpower resources are saved, the working efficiency is improved, and the automatic focusing is adopted to combine the zooming and the zooming of the lenses, so that the focusing accuracy of an optical mechanism is better ensured.

In the present embodiment, the spectroscopic sheet includes: the first beam splitter 15 is disposed opposite to the reflecting mirror 14, and deflects the laser beam reflected by the reflecting mirror 14 to the sixth optical path 36 and reflects the laser beam to the second beam splitter 17; the second beam splitter 17 is provided at a portion where the mounting box 11 communicates with the optical system structure 21, and is located on a path of the sixth optical path 36 to deflect and reflect the laser beam to the third optical path 33.

In this embodiment, the mounting box 11 has a through hole, the through hole is located in the light emitting direction of the second beam splitter 17, the objective lens seat 44 is installed in the through hole and is installed at one end of the motor shaft 421, the through hole and the second beam splitter 17 are located at the same vertical position, when the laser beam in the form of a semicircle light spot is reflected to the second beam splitter 17, the second beam splitter 17 reflects the laser beam in the form of a semicircle light spot to the outside of the mounting box 11 through the through hole, so that the laser beam in the form of a semicircle light spot is output to the lens in the objective lens seat 44 in the optical lens 2, when the optical lens 2 has the reflected beam reflected to the mounting box 11, the reflected beam is irradiated to the second beam splitter 17 through the through hole, and the second beam splitter 17 reflects the reflected beam to the mounting box 11.

Preferably, an exit window is also provided in the mounting box 11, the exit window being located between the first and second light splitting sheets 15, 17 and in the path of the sixth light path 36. The lens group 16 is arranged in the exit window, the lens group 16 is suitable for transmitting the laser beam reflected by the first beam splitter 15 towards the second beam splitter 17, when the laser beam in the semicircular light spot form is reflected to the first beam splitter 15, the laser beam in the semicircular light spot form is required to be concentrated by the lens group 16 arranged at one side of the second beam splitter 17, and the laser beam in the semicircular light spot form is not scattered and reflected to the second beam splitter 17.

In this embodiment, the mounting box 11 is externally provided with a reflected light beam to be irradiated into the mounting box 11, the reflected light beam is transmitted into the mounting box 11 towards the second beam splitter 17, and when the laser beam is transmitted onto the object 24 to be measured from the second beam splitter 17, the object 24 to be measured emits the reflected light beam, and the reflected light beam is irradiated into the mounting box 11 through the second beam splitter 17.

In the present embodiment, the laser image sensor 1 further includes: a detector 18 provided in the mounting case 11 and located on the path of the seventh optical path 37, for receiving an optical signal; a right angle prism 19, the right angle prism 19 is arranged in the installation box 11 and located in the direction of the fifth light path 35, and is used for reflecting the reflected light beam to the detector 18; the right-angle prism 19 has at least two reflecting surfaces, and the at least two reflecting surfaces are perpendicular to each other; when light of the vertical image sensor is received, the light is reflected to the second light-splitting sheet 17 through the through hole, the light of the vertical image sensor is reflected to the right-angle prism 19 through the lens group 16 by the second light-splitting sheet 17, the light of the vertical image sensor is reflected to the detector 18 by the right-angle prism 19, and the detector 18 can start calculation and judgment.

In this embodiment, the laser image sensor 1 further includes an adjusting member 110, the reflecting mirror 14 and the right-angle prism 19 are respectively fixed on the adjusting member 110, the reflecting mirror 14 is adjusted and fixed in the mounting box 11 through a jackscrew, so as to achieve fine adjustment of the propagation direction of the optical path, and the right-angle prism 19 slides through a U-shaped groove to achieve fine adjustment of the adjustment focal length. When the distance between the right-angle prism 19 and the detector 18 needs to be adjusted, the right-angle prism 19 can be adjusted by the sliding adjusting piece 110, and the distance between the third light path and the detector 18 can be flexibly adjusted by the adjusting piece 110 during installation, so that the distance between the light beam received by the detector 18 is accurate.

In this embodiment, the transmission assembly includes a driving plate 43 and a connection plate, wherein two ends of the driving plate 43 in the length direction are fixed with a servo motor 421 of the servo motor 42, and move along the length direction along with the servo motor 421 when the servo motor 42 works, one end of the connection plate is fixed with a side surface of the driving plate 43 in the length direction, and the other end is connected with the objective lens holder 44.

Specifically, the servo motors 421 of the servo motors 42 are respectively fixed at two sides of the driving plate 43 during operation, so that the servo motors 421 can be in screw transmission with the driving plate 43 during movement, and further drive the driving plate 43 and the connecting plate to move together, so that the objective lens seat 44 is driven to perform focusing operation.

In the present embodiment, the driving plate 43 includes a first connecting portion 430, a second connecting portion 431, and a transmission portion 432, wherein the first connecting portion 430 is connected to one end of the servo motor 421, the second connecting portion 431 is connected to the other end of the servo motor 421, and the transmission portion 432 is located between the first connecting portion 430 and the second connecting portion 431 and slidably connected to the bottom plate 49.

Specifically, during operation, the first connection portion 430 clamps and fixes one end of the servo motor 421, and the position where the first connection portion 430 is connected with the servo motor 421 can be adjusted by tightness through the through hole, so that the transmission rod is not easy to shake or fall off in the process of driving the connection block to move, the second connection portion 431 and the other end of the servo motor 421 can be fixed by bolts, and the transmission portion 432 can move stably with the servo motor 421 when moving along with the servo motor 421.

In this embodiment, a sliding component is disposed at the bottom of the transmission portion 432, the transmission portion 432 is slidably connected to the bottom plate 49 through the sliding component, the sliding component includes a sliding rail 45 and a sliding block 46, the sliding rail 45 is disposed on the bottom plate 49 and along the length direction of the bottom plate 49, and the sliding block 46 is slidably disposed on the sliding rail 45 and fixed to the transmission portion 432, so that the transmission portion 432 moves along with the sliding block 46 on the sliding rail 45.

Specifically, the sliding rail 45 is arranged in the length direction of the bottom plate 49, the number of the sliding blocks 46 is two, the sliding blocks 46 are embedded on the sliding rail 45 and are close to the bottom plate 49, one ends of the two sliding blocks 46 are connected with the transmission part 432 respectively, the other ends of the two sliding blocks are slidable with the sliding rail 45, the servo motor 421 is driven to move when the servo motor 42 works, the servo motor 421 is driven to be connected with the driving plate 43 in a transmission manner, and the driving plate 43 and the sliding blocks 46 can slide linearly between the sliding rails 45, so that the driving plate 43 has better stability in the sliding process.

In this embodiment, the optical lens 2 further includes a reading module 48, where the reading module 48 is disposed on the bottom plate 49 along a vertical direction and is close to the servo motor 42 and the transmission assembly.

Specifically, the reading module 48 is fixed on the other side of the bottom plate 49, and can obtain a relatively high reading speed through the reading module 48, and meanwhile, data can be stored conveniently, so that the data can be read and written, later data transmission and searching are convenient, and higher focusing efficiency is obtained.

In this embodiment, the optical lens 2 further includes a connection terminal 47, one end of the connection terminal 47 is electrically connected to the servo motor 42, and the other end is externally connected to the main control module.

Specifically, the number of the wiring terminals 47 can be two, the distance between the two wiring terminals 47 can be 32mm, the wiring terminals 47 can be made of insulating plastics and the like, signal transmission is realized between the internal metal conductor and the servo motor 42, stable and reliable contact force and good conductivity can be kept, and meanwhile, the safety in the power utilization process can be protected. Of course

In this embodiment, an embodiment of the present invention further provides an optical apparatus including the optical mechanism provided in the above embodiment.

In the embodiment, as the optical mechanism adopts the laser image sensor 1 to realize confirmation of the defocusing direction, and simultaneously combines the optical lens 2 to realize accurate and rapid automatic focusing, in the detection process of the combined zoom lens, under the condition that different magnifications are realized without changing objective lenses with different magnifications, products are clearly observed in automatic focusing, the cost and manpower resources are saved, the working efficiency is improved, and the automatic focusing is adopted to combine the zooming of the lens with the zooming of the lens, so that the focusing accuracy of the optical mechanism is better ensured. Thereby guaranteeing the focusing accuracy of the optical equipment.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the scope of the invention, but rather, the equivalent structural changes made by the description of the invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (10)

1. An optical mechanism, comprising:

the laser image sensor is used for emitting laser beams, collecting the laser beams reflected by the surface of the measured object and carrying out algorithm processing on the received optical signals;

the optical lens is communicated with the laser image sensor and is used for receiving the laser beam emitted by the laser image sensor, reflecting the laser beam to the surface of the measured object, and finally, reflecting the laser beam through the surface of the measured object and collecting the laser beam by the laser image sensor;

the laser image sensor includes:

a mounting box;

the laser is arranged in the mounting box and emits a laser beam towards a specified direction;

the knife edge is arranged in the appointed direction and is used for shielding the laser beam to form an eccentric laser beam in a semicircular light spot shape;

the lens assembly comprises a reflecting mirror and a beam splitter, wherein the reflecting mirror is arranged in the preset direction of the laser beam in the semicircular light spot form and reflects the eccentric laser beam in the semicircular light spot form, and when the laser beam continuously propagates to the reflecting mirror along the first light path direction through the knife edge, the reflecting mirror deflects the laser beam to the second light path direction and reflects the laser beam to the beam splitter so as to be output to an emergent window lens group through the beam splitter and then output to the optical lens;

the optical lens includes:

an optical system structure having a series of imaging lens groups and their fixed lenses, a structural work piece of a motor;

the servo motor is arranged on the optical system structure;

the transmission assembly is connected with the servo motor;

the objective lens seat is connected with the transmission assembly to communicate the optical system structure with the mounting box, and moves along a straight line along with the transmission assembly when the transmission assembly is driven, and the beam splitter outputs the laser beam to the objective lens assembly along a third light path when the reflecting mirror deflects the laser beam to the second light path direction and reflects the laser beam to the beam splitter;

the objective lens assembly is connected with the objective lens seat, when the beam splitter outputs the laser beam to the objective lens assembly along a third light path, the laser beam is converged to the surface of the object to be measured through the objective lens assembly, the surface of the object to be measured reflects the laser beam to form a reflected beam, the reflected beam propagates to the beam splitter through the objective lens assembly, and the beam splitter splits the reflected beam into two reflected laser beams and deflects the two reflected laser beams to a fourth light path and a fifth light path respectively.

2. The optical mechanism of claim 1, wherein the beam splitter plate comprises:

the first light splitting piece is arranged opposite to the reflecting mirror and deflects the laser beam reflected by the reflecting mirror to the sixth light path direction to reflect to the second light splitting piece;

the second beam splitter is arranged at the communication part of the mounting box and the optical system structure and is positioned on the path of the sixth optical path so as to deflect and reflect the laser beam to the third optical path.

3. The optical mechanism according to claim 2, wherein the mounting box is provided with a through hole, the objective lens seat is mounted in the through hole, and the through hole is positioned in the light emergent direction of the second light splitting piece;

an exit window is also arranged in the mounting box, is positioned between the first light splitting sheet and the second light splitting sheet and is positioned on the path of a sixth light path;

a lens is arranged in the emergent window and is suitable for transmitting the laser beam reflected by the first beam splitter towards the second beam splitter;

the outside of the installation box is provided with a reflected light beam which propagates into the installation box, and the reflected light beam is transmitted into the installation box towards the second light splitting piece.

4. The optical mechanism of claim 1, wherein the laser image sensor further comprises:

and the detector is arranged in the mounting box and positioned on the path of the seventh optical path to receive the optical signal.

5. The optical mechanism of claim 4, wherein the laser image sensor further comprises an adjusting member, the reflecting mirror and the right-angle prism are respectively fixed on the adjusting member, the reflecting mirror is adjusted and fixed in the mounting box through a jackscrew to realize fine adjustment of the propagation direction of the optical path, and the right-angle prism slides through a U-shaped groove to realize fine adjustment of the adjustment focal length.

6. The optical mechanism of claim 1, wherein the optical system structure comprises a motor cover and a base plate, the motor cover and the base plate being detachably connected to mount and secure the servo motor and the transmission assembly.

7. The optical mechanism of claim 6, wherein the transmission assembly comprises:

the two ends of the driving plate in the length direction are respectively fixed with a motor shaft of the servo motor and move along the length direction along with the motor shaft when the servo motor works;

one end of the connecting plate is fixed with the side surface of the driving plate in the length direction, and the other end of the connecting plate is connected with the objective lens seat; wherein, the drive plate includes:

a first connecting part connected to one end of the motor shaft;

the second connecting part is connected to the other end of the motor shaft;

the transmission part is positioned between the first connecting part and the second connecting part and is in sliding connection with the bottom plate.

8. The optical mechanism according to claim 7, wherein a sliding component is arranged at the bottom of the transmission part, and the transmission part is in sliding connection with the bottom plate through the sliding component; wherein, the slip subassembly includes:

the sliding rail is arranged on the bottom plate and is arranged along the length direction of the bottom plate;

the sliding block is slidably arranged on the sliding rail and is fixed with the transmission part, so that the transmission part moves along with the sliding block on the sliding rail.

9. The optical mechanism of claim 7, wherein the optical lens further comprises a reading module and a connecting terminal, wherein the reading module is arranged on the bottom plate along the vertical direction and is close to the servo motor and the transmission assembly;

one end of the wiring terminal is electrically connected to the servo motor, and the other end of the wiring terminal is externally connected to the main control module.

10. An optical device comprising an optical mechanism as claimed in any one of claims 1 to 9.

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