CN107884422B - Optical detection device - Google Patents
Optical detection device Download PDFInfo
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- CN107884422B CN107884422B CN201710003457.1A CN201710003457A CN107884422B CN 107884422 B CN107884422 B CN 107884422B CN 201710003457 A CN201710003457 A CN 201710003457A CN 107884422 B CN107884422 B CN 107884422B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
- G01N2021/9583—Lenses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Testing Of Optical Devices Or Fibers (AREA)
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Abstract
The invention relates to optical detection equipment, which comprises a supporting mechanism, an image acquisition mechanism movably supported on the supporting mechanism, a target positioned beside the supporting mechanism and below the image acquisition mechanism, a lens bearing device positioned between the image acquisition mechanism and the target, and a supporting mechanism positioned beside the target and used for supporting the lens bearing device and being capable of adjusting the position of the lens bearing device, wherein the supporting mechanism, the target and the supporting mechanism are sequentially arranged from left to right. The optical detection device has the advantages of simple structure, convenient and quick detection process, high detection precision and low cost.
Description
Technical Field
The present invention relates to an optical inspection apparatus, and more particularly, to an optical inspection apparatus for inspecting Virtual reality (Virtual reality) lenses.
Background
Chinese patent 201510424415.6 discloses an automatic detection device and method for optical grating modulated lens defects. The automatic detection device for the defects of the grating-modulated lenses comprises an image acquisition device, a camera fixing frame, a lens fixing frame, gratings, linear screw guide rails, a planar backlight source and the like. In such a grating-modulated automatic lens defect detection device, the image acquisition device is mounted on the camera mount, and the image acquisition device can only make a translational movement in the lateral direction on the camera mount. Meanwhile, the lens fixing frame can not move, and the position of the detected lens on the lens fixing frame is fixed. The grating is mounted on the linear screw guide rail and can only do translational motion along the axial direction. The planar backlight is disposed below the grating, spaced apart from the grating. In addition, the image acquisition device, the grating and the planar backlight source can be detected only by driving or controlling an external motion control card, a motor driver, a stepping motor, a light source controller and the like. Therefore, the detection blind spot exists in the detection process of the automatic detection device for the lens defects modulated by the grating, so that the detection precision is low, and meanwhile, the whole structure of the device is complex and the cost is high.
The virtual reality technology VR (Virtual reality) is to generate a virtual world in a three-dimensional space by computer simulation, and provide the simulation of the sense of vision, hearing, touch and the like for the user, so that the user is as if the user is in the scene. Since Facebook purchased virtual reality technology company Oculus at 20 million dollars in 2014, VR industry began to fire burst, and various manufacturers put forward VR products in dispute, VR helmets are one of the most popular VR products in the market at present, and the inside of the helmet has an optical imaging effect as an optical lens. At present, an optical lens mainly adopts a plastic aspherical lens or a Fresnel lens, an injection molding process is adopted to detect the imaging quality of the existing VR lens, human eyes are used for observation and experience, subjective judgment factors of a person are large, the efficiency is low, and the quality cannot be ensured, so that the development of equipment capable of quantitatively detecting the imaging quality of the plastic aspherical lens or the Fresnel lens is urgent.
Disclosure of Invention
The invention aims to provide an optical detection device which is convenient and quick to adjust, high in detection precision, simple in structure and low in cost.
In order to achieve the above object, the present invention provides an optical inspection apparatus including a support mechanism, an image pickup mechanism movably supported on the support mechanism, a target located beside the support mechanism and below the image pickup mechanism, a lens carrying device located between the image pickup mechanism and the target, a support mechanism located beside the target for supporting the lens carrying device and capable of adjusting a position of the lens carrying device;
the support mechanism, the target and the support mechanism are sequentially arranged from left to right.
According to one aspect of the invention, the image acquisition mechanism comprises an industrial lens for imaging and an industrial camera mutually adapted to the industrial lens for processing image information.
According to one aspect of the invention, the support mechanism comprises a bearing seat and a rotary table supported on the bearing seat;
the section of the supporting seat is L-shaped;
the supporting seat comprises a sliding rail with a dovetail-shaped cross section and a diagonal rack.
According to an aspect of the present invention, the rotary table includes a displaceable portion movable up and down along the support base and a rotatable portion rotatably supported on the displaceable portion;
the rotary table further comprises a handle for controlling the rotary table to rotate around the central axis of the rotary table, a dovetail groove and a bevel gear which can be matched with the sliding rail with the cross section in a dovetail shape and provided with the bevel rack, and a knob for controlling the rotary table to move up and down through the mutual meshing of the bevel gear and the bevel rack.
According to an aspect of the present invention, the rotation angle of the rotatable portion is adjusted to θ by the handle, and 0 ° < θ <60 ° is satisfied.
According to an aspect of the present invention, the support mechanism further includes first and second adapter plates for connecting the rotary table and the industrial camera;
the first adapter plate is square plate-shaped;
the section of the second adapter plate is I-shaped.
According to one aspect of the invention, the lens carrying device comprises a round hole end for holding a detection lens and an extending end for connecting the round hole end and supporting on the supporting mechanism;
and the round hole end is provided with a universal lens supporting seat.
According to one aspect of the invention, the support mechanism includes a Z-axis adjustment stage for supporting the lens-carrying device, a carriage for supporting the Z-axis adjustment stage, and an XY-axis adjustment stage for supporting the carriage;
the section of the bracket is L-shaped;
the bracket comprises a guide rail with a dovetail-shaped section and a diagonal rack.
According to one aspect of the invention, the Z-axis adjustment platform comprises a dovetail groove and a bevel gear which can be matched with the guide rail with the bevel gear in a dovetail shape in section, and an adjusting knob for controlling the Z-axis adjustment platform to move up and down through the mutual engagement of the bevel gear and the bevel gear.
According to one aspect of the present invention, the XY axis adjustment stage includes a stage for supporting the support, a left-right adjustment lever for adjusting a left-right position of the stage, and a front-rear adjustment lever for adjusting a front-rear position of the stage.
According to one aspect of the invention, the target includes a housing, a light source located inside the housing, a light source diffuser plate located over the light source, and a target located over the light source diffuser plate for testing resolution.
According to the scheme of the invention, the sections of the supporting seat and the bracket are L-shaped, and the long arm and the short arm of the supporting seat and the bracket are fixedly connected with the rib plate, so that the strength and the stability of the supporting seat and the bracket are enhanced, the integral strength of the optical detection equipment is ensured, and the detection precision is ensured.
According to the scheme of the invention, the sliding rail on the supporting seat is provided with the dovetail-shaped cross section and the structure with the inclined racks, the rotating table is provided with the dovetail grooves and the inclined racks which are matched with the sliding rail, and the meshing rotation of the gear rack is controlled through the knob, so that the upper position and the lower position of the rotating table on the supporting seat are controlled, the process is convenient and quick to adjust, the position accuracy is high, and the high detection accuracy is ensured. Meanwhile, the industrial camera and the industrial lens move flexibly in the vertical direction, and the requirements of different detected lenses on the detection distance of the industrial camera and the industrial lens are met.
According to the scheme of the invention, the rotatable part can rotate by the handle, so that the angle of the equipment can be adjusted according to the detection requirement when detecting the lens, the detection is more flexible, meanwhile, the angle can be adjusted, so that the image capturing range of the image acquisition mechanism is larger, the detection range is increased, no dead angle exists on the detection lens, and the detection precision is higher and more reliable.
According to an aspect of the present invention, the first adapter plate is vertically installed on the rotatable portion through one end thereof, and the second adapter plate is vertically installed on the other end of the first adapter plate and is installed on a different side from the rotatable portion. The installation mode can lengthen the longitudinal installation distance, so that the installation position of the industrial camera can be higher, the installation space of the industrial lens matched with the industrial camera is increased, the industrial camera and the industrial lens are ensured to be positioned on the target and the lens bearing device, the operation space is larger, different industrial cameras or industrial lenses are replaced more conveniently and rapidly, component interference in equipment can not be generated, and meanwhile, the detection flexibility and the detection precision are ensured.
According to the scheme of the invention, the lens bearing device adopts a stack bridge type extending structure, so that the structure of the lens bearing device is simplified, the cost is saved, the space is saved, and the parts are more compact. The universal lens supporting seat is adopted, so that the universality of the lens bearing device is improved, the detected lenses with different specifications can be borne, the applicability of the device is enhanced, and the production cost is saved. In the working process of the invention, the detected lenses can be conveniently and integrally replaced by taking and placing the universal lens supporting seat, thereby improving the working efficiency and realizing batch detection of the lenses.
According to one scheme of the invention, a dovetail-shaped guide rail with a bevel gear is arranged on the bracket, and a dovetail groove and a bevel gear matched with the guide rail are arranged on the Z-axis adjusting platform. The gear and rack are controlled to be meshed and rotated through the adjusting knob, so that the upper position and the lower position of the Z-axis adjusting platform on the bracket are controlled, and the detection relative distance between the universal lens bearing seat and the industrial lens is accurately adjusted. The position of the Z-axis adjusting platform is adjusted, so that the distance between the Z-axis adjusting platform and the industrial lens is increased, the universal lens bearing seat can be conveniently taken and placed without moving the industrial lens, and interference of the industrial lens is avoided. Meanwhile, the detected lens can be imaged clearly by adjusting the universal lens bearing seat, so that adjustment of an industrial lens after the detected lens is replaced is avoided, and the invention can be used conveniently and rapidly. The process is convenient and quick to adjust, and high in position accuracy, so that high detection accuracy is guaranteed.
According to the scheme of the invention, the XY axis adjusting platform can realize the accurate adjustment of the front and back positions and the left and right positions of the bracket through the accurate adjustment of the left and right adjusting rotating rods and the front and back adjusting rotating rods. The relative position of the support supported by the XY axis adjusting platform is accurately adjusted through the combined action of the left-right adjusting rotating rod and the front-back adjusting rotating rod, so that the mutual position between the industrial lens and the lens to be measured below is accurately adjusted. The XY axis adjusting platform is used, so that the detected lenses carried on the universal lens carrying seat can be aligned with the industrial lenses quickly and conveniently without adjusting the positions of the industrial lenses, and the efficiency of detecting the lenses is improved.
According to one aspect of the invention, the use of a black box blocks the influence of ambient light on the detection process of the invention. The accuracy of the detection result of the invention is ensured.
According to one scheme of the invention, the optical detection device is reasonable and simple in overall structure and low in cost.
Drawings
Fig. 1 is a perspective view schematically showing an optical detection apparatus according to the present invention;
fig. 2 is a perspective view schematically showing an optical detection apparatus according to the present invention;
FIG. 3 is a side view schematically illustrating a target according to the present invention;
fig. 4 is a perspective view schematically showing a black box which can house the optical detection device according to the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
In describing embodiments of the present invention, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in terms of orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and do not denote or imply that the devices or elements in question must have a particular orientation, be constructed and operated in a particular orientation, so that the above terms are not to be construed as limiting the invention.
The present invention will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present invention are not limited to the following embodiments.
Fig. 1 schematically shows an optical detection device according to the invention in a perspective view. As shown, the optical inspection apparatus includes an image acquisition mechanism 1, a support mechanism 2, a target 3, a lens carrier 4, and a support mechanism 5. In the present embodiment, the image pickup mechanism 1 is mounted on the support mechanism 2, and the target 3 is located below the image pickup mechanism 1 while being located on the right side of the support mechanism 2. The lens carrier 4 is mounted on a support mechanism 5, the support mechanism 5 being located on the right side of the target 3, the lens carrier 4 being located between the image acquisition mechanism 1 and the target 3. In the present embodiment, the target 3 is provided in a square shape, and the support mechanism 2 and the support mechanism 5 are located on one side of two opposite sides of the target 3. The image acquisition mechanism 1 is movably supported on the support mechanism 2, and the lens carrier 4 is movably supported on the support mechanism 5.
Fig. 2 schematically shows an optical detection device according to the invention in a perspective view. As shown, the image capturing mechanism 1 includes an industrial lens 101 and an industrial camera 102. In the present embodiment, an industrial lens 101 for imaging and an industrial camera 102 for processing image information are mutually adapted. Both the industrial lens 101 and the industrial camera 102 meet the optical design requirement, the field angle of the industrial lens 101 is close to or slightly exceeds the field angle of the measured lens, and the distance between the entrance pupil position and human eyes is equal to the distance between the human eyes and lenses. In the present embodiment, the selected industrial camera 102 includes a pixel size, a chip size, and the like, which are matched with the industrial lens 101.
As shown in fig. 2, the support mechanism 2 includes a bearing block 201, a rotary table 202, a first adapter plate 203, and a second adapter plate 204. In the present embodiment, the rotary table 202 is supported movably on the support base 201. The first adapter plate 203 is fixedly supported on the rotary table 202, and the second adapter plate 204 is fixedly supported on the first adapter plate 203. Meanwhile, the second adapter plate 204 is fixedly connected with the industrial camera 102. Thereby enabling the joint movement of the turntable 202 and the industrial camera 102, and the turntable 202 may also drive the industrial camera 102 for angular adjustment.
As shown in fig. 2, in the present embodiment, the cross section of the support base 201 is L-shaped, and the long arm and the short arm thereof are fixedly connected to each other with the rib, thereby reinforcing the strength of the entire support base 201. The rib plate can be a triangular plate, a right-angle trapezoid plate and the like. The support block 201 is fixedly supported on the mounting table by a short arm, the long arm of which remains upright. The long arm of the supporting seat 201 is provided with a sliding rail 2011 with the same length as the long arm, and the section of the sliding rail 2011 is in a dovetail shape and provided with a diagonal rack. The supporting seats 201 may be provided as an integral piece, and may be fixedly connected to each other by welding, riveting, or the like.
As shown in fig. 2, in the present embodiment, the rotary table 202 is composed of a displaceable portion 202a and a rotatable portion 202b, the rotatable portion 202b being fixedly supported on the displaceable portion 202a, the rotatable portion 202b being movable up and down with the displaceable portion 202 a. In the present embodiment, a dovetail groove matching with a slide rail 2011 having a dovetail shape in cross section is provided on the displaceable portion 202a of the rotary table 202, and a helical gear engaged with a helical gear on the slide rail 2011 is also provided on the displaceable portion 202 a. The rotating table 202 is connected with the slide rail 2011 through the dovetail groove of the displaceable part 202a in a mutually matched manner, meanwhile, the bevel gear in the rotating table 202 is meshed with the bevel gear rack on the slide rail 2011, and the meshing relative position between the bevel gear and the bevel gear rack is accurately adjusted by controlling the knob 2022 arranged on the displaceable part 202a of the rotating table 202, so that the relative position of the rotating table 202 on the slide rail 2011 is adjusted, and the accuracy of the up-and-down moving position of the rotating table is ensured. Thereby ensuring the accuracy of the moving position of the industrial camera 102 along with the rotary table 202 in the vertical direction, and simultaneously enabling the industrial camera 102 to move flexibly in the vertical direction, and adapting to the requirements of different detected lenses on the detection distance of the industrial camera 102. As shown in fig. 2, the rotatable portion 202b of the rotary table 202 is fixedly supported on the displaceable portion 202a, and the rotatable portion 202b of the rotary table 202 is provided with a handle 2021 that can control the rotation angle of the rotatable portion 202 b. The rotation angle θ of the rotatable portion 202b can be accurately adjusted by turning the knob 2021, and in the present embodiment, the rotation angle θ of the rotatable portion 202b is θ and satisfies the adjustment range of 0 ° < θ <60 °. In the invention, because the rotatable part 202b in the rotary table 202 can rotate by an angle, the angle of the equipment can be adjusted according to the detection requirement when detecting the lens, so that the detection is more flexible, and meanwhile, because the angle can be adjusted, the image capturing range of the image capturing mechanism 1 is larger, the detection range is increased, no dead angle exists in the detection lens, the detection precision is higher, and the detection is more reliable.
As shown in fig. 2, according to an embodiment of the present invention, the first adapter plate 203 has a square plate shape, and the second adapter plate 204 has an "i" shape. In the present embodiment, an end surface of one end of the second interposer 204 is fixedly connected to one side surface of the first interposer 203, and the second interposer 204 is fixedly mounted near one end of the first interposer 203. I.e. the end position of the second adapter plate 204 vertically supported on one side of the first adapter plate 203. The other side of the first adapter plate 203 is fixedly connected to the rotatable portion 202b of the rotary table 202, and the rotatable portion 202b of the rotary table 202 is located at the other end of the first adapter plate 203, i.e., the end remote from the second adapter plate 204. Namely, the second connection plate 204 and the rotary table 202 are located on opposite sides of the first connection plate 203, and are located at both ends of the first connection plate 203, respectively. As shown in the figure, the first adapter plate 203 is vertically installed, and such an installation manner can lengthen the longitudinal installation distance, so that the installation position of the industrial camera 102 can be higher, thereby increasing the installation space of the industrial lens 101 matched with the industrial camera 102, ensuring that the industrial camera 102 and the industrial lens 101 can be positioned on the target 3 and the lens bearing device 4, having larger operation space, being more convenient and rapid to replace different industrial cameras 102 or industrial lenses 101, not generating component interference in the equipment, and ensuring the flexibility and the detection precision of the detection.
As shown in fig. 2, according to one embodiment of the present invention, the lens carrier 4 includes a rounded end 401, an extended end 402, and a universal lens support block 403. In this embodiment, the circular hole end 401 and the protruding end 402 are fixedly connected to each other as an integral structure. The circular hole end 401 is a circular flat plate, the extension end 402 is a strip flat plate, and the other end of the extension end 402 is fixedly supported on the Z-axis adjustment platform 501. The universal lens support seat 403 is matched with the hollow position in the middle of the round hole end 401, and the universal lens support seat 403 is detachably arranged at the hollow position of the round hole end 401. The universal lens mount 403 is located below the center of the industrial camera 102 and industrial lens 101. The lens bearing device 4 adopts the extension structure of the bridge type, so that the structure of the lens bearing device 4 is simplified, the cost is saved, the space is saved, and the parts are more compact. By adopting the universal lens supporting seat 403, the universality of the lens bearing device 4 is improved, so that the detected lenses with different specifications can be borne, the applicability of the invention is enhanced, and the production cost is saved. In the working process of the invention, the detected lenses can be conveniently and integrally replaced by taking and placing the universal lens supporting seat 403, so that the working efficiency is improved, and meanwhile, the batch detection of the lenses is realized.
As shown in fig. 2, the support mechanism 5 includes a Z-axis adjustment stage 501, a bracket 502, and an XY-axis adjustment stage 503, according to one embodiment of the present invention. In the present embodiment, the Z-axis adjustment stage 501 is slidably connected to a bracket 502, the bracket 502 is fixedly supported on an XY-axis adjustment stage 503, and the XY-axis adjustment stage 503 is fixedly supported on a mounting table. The bracket 502 is "L" shaped in cross section with its short arm fixedly supported on the XY adjustment table 503 and its long arm held upright. The long and short arms of the bracket 502 are fixedly connected with the reinforcement rib, thereby enhancing the strength and stability of the bracket 502. The long arm, the short arm and the reinforcing rib of the bracket 502 may be integrally formed, and of course, may be fixedly connected by welding, riveting or the like. A rail 5021 having a dovetail cross section and a diagonal rack is provided on the long arm of the bracket 502. The length of the guide rail 5021 is the same as the length of the long arm of the bracket 502.
As shown in fig. 2, in the present embodiment, the Z-axis adjustment platform 501 is provided with a dovetail groove matching the dovetail section of the guide rail 5021, and the Z-axis adjustment platform 501 is provided with a bevel gear capable of meshing with a bevel gear on the guide rail 5021. The Z-axis adjusting platform 501 is connected with the guide rail 5021 in a matched mode through a dovetail groove, meanwhile, the bevel gear is meshed with the bevel gear rack on the guide rail 5021, the meshing position of the bevel gear and the bevel gear rack is changed, and the position of the Z-axis adjusting platform 501 on the bracket 502 is adjusted. Of course, in order to precisely control the displacement of the Z-axis adjustment platform 501 on the bracket 502, an adjusting knob 5022 for controlling the rotation of the bevel gear is further provided on the Z-axis adjustment platform 501, and the relative meshing position of the bevel gear and the bevel rack can be precisely controlled by rotating the adjusting knob 5022, so that the position of the Z-axis adjustment platform 501 on the bracket 502 can be precisely changed. The detected relative distance between the universal lens carrier 403 and the industrial lens 101 is precisely adjusted by precisely controlling the position of the Z-axis adjustment platform 501 on the bracket 502. The position of the Z-axis adjusting platform 501 is adjusted to enlarge the distance between the Z-axis adjusting platform and the industrial lens 101, so that the universal lens bearing seat 403 can be conveniently taken and placed without moving the industrial lens 101, and interference of the industrial lens 101 is avoided. Meanwhile, the detected lens can be imaged clearly by adjusting the universal lens bearing seat 403, so that the adjustment of the industrial lens 101 after the detected lens is replaced is avoided, and the invention can be used conveniently and rapidly.
As shown in fig. 2, the XY axis adjustment stage 503 includes a stage 5031, a left-right adjustment lever 5032, and a front-rear adjustment lever 5033 according to an embodiment of the present invention. In the present embodiment, the upper end of the stage 5031 is fixedly connected to the short arm of the holder 502, and the lower end thereof is fixedly supported on the mounting table. The left and right positions (i.e., the positions in the left and right directions in the drawing) of the stage 5031 can be precisely adjusted by rotating the left and right adjustment lever 5032, so that the left and right positions of the bracket 502 can be precisely adjusted, and the front and rear positions (i.e., the positions in the up and down directions in the drawing) of the stage 5031 can be precisely adjusted by rotating the front and rear adjustment lever 5033, so that the front and rear positions of the bracket 502 can be precisely adjusted. By the combined action of the left-right adjusting rotary rod 5032 and the front-back adjusting rotary rod 5033, the relative position of the bracket 502 supported by the XY axis adjusting platform 503 is accurately adjusted, so that the mutual center position between the industrial lens 101 and the lens to be measured below is accurately adjusted. The XY axis adjustment platform 503 is used, so that the detected lens carried on the universal lens carrying seat 403 can be aligned with the industrial lens 101 quickly and conveniently, without adjusting the position of the industrial lens 101, and the efficiency of detecting the lens is improved.
Fig. 3 schematically shows a side view of a target according to the invention. According to one embodiment of the present invention, the target 3 includes a housing 301, a light source 302, a light source diffusion plate 303, and a target 304. In this embodiment, the target 304, the light source diffusion plate 303 and the light source 302 are sequentially disposed from top to bottom, the target 304 and the housing 301 form a closed space, and the light source 302 and the light source diffusion plate 303 are located in the closed space formed by the target 304 and the housing 301. The light source 302 is an LED ring belt uniform light source, and the target 304 is a film target with longitudinal and transverse lines.
Fig. 4 schematically shows a perspective view of a black box which can accommodate an optical detection device according to the invention. According to one embodiment of the invention, the black box 6 is a square hollow box body as a whole. In this embodiment, as shown in fig. 4, the black box 6 has an opening at the bottom thereof, which is matched with the mounting table, and the black box 6 is directly mounted on the mounting table through the opening. In this embodiment, a sliding door capable of moving up and down is provided on the front side of the black box, and the black box 6 is used for accommodating the equipment on the mounting table into the box body, and when the lens to be tested is put in or taken out, the black box can be opened or closed by moving the sliding door up and down. When the device is opened, the lens to be measured is placed at the corresponding position in the device, and after the lens to be measured is placed, the sliding door is closed, so that a closed space is formed between the lens to be measured and the mounting table. The use of the black box 6 blocks the influence of external light on the detection process of the invention. The accuracy of the detection result of the invention is ensured.
The foregoing is merely exemplary of embodiments of the present invention and, as for devices and structures not explicitly described herein, it should be understood that they may be implemented using general purpose devices and general purpose methods known in the art.
The above description is only one embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An optical inspection apparatus comprising a support mechanism (2), an image pickup mechanism (1) movably supported on the support mechanism (2), a target (3) located beside the support mechanism (2) and below the image pickup mechanism (1), a lens carrier (4) located between the image pickup mechanism (1) and the target (3), a support mechanism (5) located beside the target (3) for supporting the lens carrier (4) and capable of adjusting the position of the lens carrier (4);
the supporting mechanism (2), the target (3) and the supporting mechanism (5) are sequentially arranged from left to right;
the support mechanism (2) comprises a supporting seat (201) and a rotary table (202) supported on the supporting seat (201); the section of the supporting seat (201) is L-shaped; the supporting seat (201) comprises a sliding rail (2011) with a dovetail-shaped cross section and a diagonal rack;
the rotary table (202) includes a displaceable portion (202 a) that can move up and down along the support base (201) and a rotatable portion (202 b) rotatably supported on the displaceable portion (202 a); the rotary table (202) further comprises a handle (2021) for controlling the rotary table (202) to rotate around the central axis thereof, a dovetail groove and a bevel gear which can be matched with the slide rail (2011) with a dovetail-shaped cross section and a bevel rack, and a knob (2022) for controlling the rotary table (202) to move up and down through the mutual meshing of the bevel gear and the bevel rack;
the supporting mechanism (5) comprises a Z-axis adjusting platform (501) for supporting the lens bearing device (4), a bracket (502) for supporting the Z-axis adjusting platform (501) and an XY-axis adjusting platform (503) for supporting the bracket (502);
the section of the bracket (502) is L-shaped;
the bracket (502) comprises a guide rail (5021) with a dovetail-shaped cross section and a diagonal rack.
2. Optical detection device according to claim 1, characterized in that the image acquisition means (1) comprise an industrial lens (101) for imaging and an industrial camera (102) mutually adapted to the industrial lens (101) for processing image information.
3. The optical detection device according to claim 1, characterized in that the rotation angle of the rotatable part (202 b) is adjusted by the handle (2021) to θ and satisfies 0 ° < θ <60 °.
4. The optical detection device according to claim 2, characterized in that the support mechanism (2) further comprises a first adapter plate (203) and a second adapter plate (204) for connecting the rotation table (202) and the industrial camera (102);
the first adapter plate (203) is in a square plate shape;
the section of the second adapter plate (204) is I-shaped.
5. Optical detection apparatus according to claim 1, characterized in that the lens carrying device (4) comprises a circular hole end (401) for holding a detection lens and an extension end (402) for connecting the circular hole end (401) and bearing on the support means (5);
the round hole end (401) is provided with a universal lens supporting seat (403).
6. The optical inspection apparatus according to claim 1, wherein the Z-axis adjustment stage (501) includes a dovetail groove and a bevel gear that can be mated with the rail (5021) having a dovetail shape in cross section and a bevel rack, and an adjustment knob (5022) that controls the Z-axis adjustment stage (501) to move up and down by the mutual engagement of the bevel gear and the bevel rack.
7. The optical inspection apparatus according to claim 1 or 6, wherein the XY axis adjustment stage (503) includes a stage (5031) for supporting the holder (502), a left-right adjustment lever (5032) for adjusting a left-right position of the stage (5031), and a front-rear adjustment lever (5033) for adjusting a front-rear position of the stage (5031).
8. The optical detection apparatus according to claim 1, wherein the target (3) comprises a housing (301), a light source (302) located inside the housing (301), a light source diffusion plate (303) located above the light source (302), and a target (304) located above the light source diffusion plate (303) for testing the resolution.
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| CN201710003457.1A CN107884422B (en) | 2017-01-04 | 2017-01-04 | Optical detection device |
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| CN201710003457.1A CN107884422B (en) | 2017-01-04 | 2017-01-04 | Optical detection device |
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| CN107884422A CN107884422A (en) | 2018-04-06 |
| CN107884422B true CN107884422B (en) | 2023-08-11 |
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| CN110320010A (en) * | 2019-07-05 | 2019-10-11 | 舜宇光学(中山)有限公司 | A kind of camera lens MTF detecting tool and calibration method |
| CN110346119A (en) * | 2019-08-06 | 2019-10-18 | 广东工业大学 | A kind of eyeglass detection system |
| CN116929725B (en) * | 2023-09-19 | 2023-11-21 | 山东中创文化创意产业集团有限公司 | VR glasses vision simulation detecting system |
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| US5521700A (en) * | 1992-03-31 | 1996-05-28 | Nidek Co., Ltd. | Meter for testing progressive multifocus lenses |
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| CN105067639A (en) * | 2015-07-20 | 2015-11-18 | 丹阳市精通眼镜技术创新服务中心有限公司 | Device and method for automatically detecting lens defects through modulation by optical grating |
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| WO2012011406A1 (en) * | 2010-07-23 | 2012-01-26 | コニカミノルタオプト株式会社 | Diaphragm position measuring method, diaphragm position measuring device, diaphragm positioning method and diaphragm positioning device |
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| US5521700A (en) * | 1992-03-31 | 1996-05-28 | Nidek Co., Ltd. | Meter for testing progressive multifocus lenses |
| JP2005134158A (en) * | 2003-10-28 | 2005-05-26 | Olympus Corp | Defect detector |
| CN1987348A (en) * | 2005-12-23 | 2007-06-27 | 鸿富锦精密工业（深圳）有限公司 | Accentric detector |
| JP2009139365A (en) * | 2007-12-07 | 2009-06-25 | Utechzone Co Ltd | Device and method for defect inspection of translucent material |
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