CN111323395B - Device for detecting spectral transmittance - Google Patents
Device for detecting spectral transmittance Download PDFInfo
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- CN111323395B CN111323395B CN202010318233.1A CN202010318233A CN111323395B CN 111323395 B CN111323395 B CN 111323395B CN 202010318233 A CN202010318233 A CN 202010318233A CN 111323395 B CN111323395 B CN 111323395B
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- 238000002834 transmittance Methods 0.000 title claims abstract description 47
- 230000003595 spectral effect Effects 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 241000252254 Catostomidae Species 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000005693 optoelectronics Effects 0.000 claims 4
- 238000012937 correction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/13—Moving of cuvettes or solid samples to or from the investigating station
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/04—Batch operation; multisample devices
- G01N2201/0446—Multicell plate, sequential
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/04—Batch operation; multisample devices
- G01N2201/0484—Computer controlled
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- General Health & Medical Sciences (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a device for detecting spectral transmittance, which comprises a turntable assembly and a transmittance detection assembly, wherein a feeding station, a correcting station, a detection station and a discharging station are uniformly distributed in the circumferential direction of the turntable assembly according to procedures, and the transmittance detection assembly is arranged on the detection station; the light transmittance detection assembly comprises an X-axis moving part, a Y-axis moving part and a detection part, wherein the X-axis moving part and the Y-axis moving part comprise a stepping motor, a ball screw, a linear sliding rail, a photoelectric switch and the like, the detection part comprises a light source device, an objective lens, an integrating sphere, a spectrometer, a reflecting mirror, a light source processing device, a light path module and a camera, and the turntable assembly comprises a motor, a motor transition piece, a turntable, a vacuum pipeline and a sucker. The invention realizes the automatic detection of the spectral transmittance, has simple operation and high detection precision, and is suitable for detecting the IR printing ink Kong Touguo rate of the mobile phone panels at home and abroad.
Description
Technical Field
The invention relates to the technical field of detection instruments, in particular to a spectrum transmittance detection instrument.
Background
At present, the brightness of the touch display screen has the function of automatically adjusting along with the brightness of the external environment, and when the brightness of the display screen changes from bright to dark, the brightness of the screen is adjusted to cause people to feel uncomfortable, so that the watching is influenced. This phenomenon is caused if the screen ambient light hole is inaccurate in detecting the transmittance of visible light, so that some instruments for detecting the transmittance of the screen are developed on the market.
However, the current domestic detection instrument for the ambient light hole has the following three problems:
1. when the transmittance is detected, the operation mode of manually detecting one piece and replacing one piece is adopted, the middle piece replacement time is long, so that the labor cost is wasted, and the detection efficiency is reduced.
2. When the transmittance is detected, the environment light hole of the screen to be detected and the light source light spot are manually aligned, and the detection result is inaccurate due to errors in manual operation.
3. When the transmittance is detected, the number of working procedures which are needed to be manually operated is large, and the detection automation degree is low.
Therefore, how to provide a transmittance detection apparatus with high efficiency and high automation is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a device for detecting spectral transmittance, which realizes full-automatic detection of spectral transmittance, has simple operation and high detection precision, and is suitable for detecting IR ink Kong Touguo rate of mobile phone panels at home and abroad.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an apparatus for detecting spectral transmittance, comprising: a turntable assembly and a light transmittance detection assembly;
The rotary table assembly is characterized in that a feeding station, a correcting station, a detecting station and a discharging station are uniformly distributed in the circumferential direction of the rotary table assembly according to the working procedures, and the light transmittance detecting assembly is installed on the detecting station.
Further, the light transmittance detecting assembly includes an X-axis moving portion, a Y-axis moving portion, and a detecting portion, the X-axis moving portion and the Y-axis moving portion being connected, and the Y-axis moving portion and the detecting portion being connected.
Further, the detection part comprises a light source device, an objective lens, an integrating sphere, a spectrometer, a reflecting mirror, a light source processing device, a light path module and a camera;
The light beam emitted by the light source device is changed into a parallel light beam through the light source processing device, the parallel light beam is reflected to the objective lens through the reflecting mirror, the objective lens focuses the parallel light beam into a light spot, the light spot passes through an ambient light hole of a display screen to be tested and enters the integrating sphere, and the integrating sphere measures the light flux and then transmits the light flux to the spectrometer for light transmittance analysis;
the reflected light beam of the display screen to be tested is imaged through the objective lens, and the imaging light beam is transmitted to the camera after being changed into parallel light beam through the reflecting mirror and the light path module in sequence.
Further, the light source processing device sequentially comprises a diaphragm, a first lens, a second lens and a third lens according to the light propagation direction.
Further, the light path module sequentially comprises a fourth lens, a fifth lens and a sixth lens according to the light propagation direction.
Further, the X-axis moving part comprises an X-axis fixing plate, a first linear guide rail, a first photoelectric switch, a photoelectric guide rail, a first bearing seat, a first ball screw, a first screw nut, a first nut seat, a first light sensing piece, a first coupler, a first motor seat and a first stepping motor, wherein the X-axis fixing plate is arranged on a frame, the guide rail of the first linear guide rail is fixed on the upper surface of the X-axis fixing plate, the first bearing seat, the first motor seat and the photoelectric guide rail are fixed on the lower surface of the X-axis fixing plate, the first bearing seat and the first motor seat are sleeved at two ends of the first ball screw, the first screw nut is sleeved on the first ball screw and is positioned between the first bearing seat and the first motor seat, the first nut seat is connected with the first screw nut, the first light sensing piece is fixed on the first nut seat, the first stepping motor is fixed on the first seat, the first motor is sleeved on the first coupler and the first motor seat, and the first ball screw is sleeved on the first motor seat and the first photoelectric switch;
The Y-axis moving part comprises a Y-axis fixing plate, a second stepping motor, a second motor seat, a second coupler, a second light-sensitive sheet, a second nut seat, a second screw nut, a second ball screw, a second linear guide rail, a second bearing seat, a photoelectric slide rail seat, a second photoelectric switch and a photoelectric slide rail, wherein the second motor seat, the guide rail of the second linear guide rail, the second bearing seat and the photoelectric slide rail seat are fixed on the upper surface of the Y-axis fixing plate, the second bearing seat and the second motor seat are sleeved at two ends of the second ball screw, the second screw nut is sleeved on the second ball screw and is positioned between the second bearing seat and the second motor seat, the second nut seat is connected with the second screw nut, the second light-sensitive sheet is fixed on the second nut seat, the second stepping motor is fixed on the second bearing seat, two ends of the second coupler are respectively fixed on the second stepping motor and the second ball slide rail, and the photoelectric switch is fixed on the photoelectric slide rail seat;
The Y-axis fixing plate is fixedly connected with the sliding block of the first linear guide rail, the sliding block of the first linear guide rail is in sliding connection with the guide rail of the first linear guide rail, the Y-axis fixing plate is connected with the first nut seat, the detection part is fixedly connected with the sliding block of the second linear guide rail, the sliding block of the second linear guide rail is in sliding connection with the guide rail of the second linear guide rail, and the detection part is connected with the second nut seat.
Further, the carousel subassembly includes motor, motor transition piece, carousel, vacuum pipeline and sucking disc, the motor with motor transition piece is connected, motor transition piece with carousel threaded connection, the sucking disc is evenly fixed carousel surface edge, just the sucking disc intercommunication vacuum pipeline.
Further, the number of the suckers is 4, and the suckers are respectively and correspondingly arranged at the feeding station, the correcting station, the detecting station and the discharging station.
Further, the device also comprises a processor, wherein the processor is respectively and electrically connected with the spectrometer and the camera.
Further, the camera is a CCD camera.
Compared with the prior art, the device for detecting the spectral transmittance is provided, the transmittance detection component is arranged at the detection station corresponding to the turntable component, the display screen to be detected is placed on the feeding station, the turntable component rotates for 90 degrees to the correction procedure for correction, then rotates for 90 degrees to the detection station for transmittance detection after correction, and then rotates for 90 degrees to the blanking station for blanking the detected screen. According to the invention, each station automatically completes a corresponding procedure, a manual operation mode is not needed, full automation is realized, and the detection efficiency is improved.
Drawings
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 or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a device for detecting spectral transmittance according to the present invention.
Fig. 2 is a schematic structural diagram of a turntable assembly according to the present invention.
Fig. 3 is a schematic structural diagram of a light transmittance detecting component according to the present invention.
Fig. 4 is a schematic view of the structure of the X-axis moving part provided by the present invention.
Fig. 5 is a schematic view of a structure of a Y-axis moving part provided by the present invention.
Fig. 6 is a schematic structural diagram of a detection part provided by the invention.
Fig. 7 is a schematic diagram of optical path transmission of the detection part provided by the invention.
Wherein,
1. A turntable assembly, 11, a motor, 12, a motor transition piece, 13, a turntable, 14, a suction cup, 2, a light transmittance detecting assembly, 21, an X-axis moving section, 211, an X-axis fixing plate, 212, a first linear guide, 213, a first photoelectric switch, 214, a photoelectric guide, 215, a first bearing housing, 216, a first ball screw, 217, a first screw nut, 218, a first nut holder, 219, a first light sensing sheet, 2110, a first coupling, 2111, a first motor holder, 2112, a first stepping motor, 22, a Y-axis moving section, 221, a Y-axis fixing plate, 222, a second stepping motor, 223, a second motor holder, 224, a second coupling, 225, a second light sensing sheet, 226, second nut holder, 227, second screw nut, 228, second ball screw, 229, second linear guide, 2210, second bearing, 2211, photoelectric slide holder, 2212, second photoelectric switch, 2213, photoelectric slide, 23, detection portion, 231, light source device, 232, objective lens, 233, integrating sphere, 234, spectrometer, 235, mirror, 236, light source processing device, 2361, diaphragm, 2362, first lens, 2363, second lens, 2364, third lens, 237, light path module, 2371, fourth lens, 2372, fifth lens, 2373, sixth lens, 238, camera, 3, processor, 4, display screen to be measured.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a device for detecting spectral transmittance, which is shown in fig. 1 and comprises a turntable assembly 1 and a transmittance detection assembly 2, wherein the turntable assembly 1 is uniformly distributed with four components of feeding, correcting, detecting and discharging along the circumferential direction according to procedures, and the feeding, correcting and discharging components are not shown in the figure.
As shown in fig. 2, the turntable assembly 1 comprises a motor 11, a motor transition piece 12, a turntable 13, vacuum pipelines and sucking discs 14, wherein the number of the sucking discs 14 is four, the four sucking discs are uniformly distributed on the edge of the turntable 13, the motor 11 is connected with the motor transition piece 12, the motor transition piece 12 is fixed on the turntable 13, the sucking discs 14 are communicated with the vacuum pipelines, and in particular, the motor 11 can be arranged as a dripping motor. During practical application, the display screen to be tested is placed on the sucker 14 corresponding to the feeding station, then the sucker 14 is vacuumized through the vacuum pipeline, the display screen to be tested is adsorbed on the sucker, the motor 11 rotates to drive the motor transition piece 12 to act, the motor transition piece 12 drives the turntable 13 to rotate, the turntable 13 stops for a period of time after rotating for 90 degrees, and corresponding procedures are completed for each station in the period of time. In the process, the turntable 13 rotates repeatedly and mainly and synchronously to complete the continuous feeding, correcting, transmittance detecting and discharging procedures, so that the detection waiting time is shortened and the efficiency is improved.
As shown in fig. 3, the transmittance detecting module 2 includes an X-axis moving section 21, a Y-axis moving section 22, and a detecting section 23 in this order from bottom to top. The X-axis moving part 21 and the Y-axis moving part 22 can move towards the X-axis and the Y-axis respectively, so as to drive the detecting part 23 to move in the plane, and the alignment of the ambient light hole of the display screen to be detected and the light source light spot of the detecting part is completed. The X-axis moving part and the Y-axis moving part adopt structures such as a stepping motor, a ball screw, a linear sliding rail, a photoelectric switch and the like and combine with the imaging condition of a CCD camera, so that the position correction of the ambient light hole and the light source facula of the screen to be detected is more accurate.
As shown in fig. 4 and 5, the X-axis moving part 21 includes an X-axis fixing plate 211, a first linear guide 212, a first photoelectric switch 213, a photoelectric guide 214, a first bearing housing 215, a first ball screw 216, a first screw nut 217, a first nut seat 218, a first photo-sensing piece 219, a first coupler 2110, a first motor seat 2111 and a first stepping motor 2112, the X-axis fixing plate 211 is mounted on the frame, the guide rail of the first linear guide 212 is fixed on the upper surface of the X-axis fixing plate 211, the first bearing housing 215, the first motor seat 2111 and the photoelectric guide 214 are fixed on the lower surface of the X-axis fixing plate 211, the first bearing housing 215 and the first motor seat 2111 are sleeved at both ends of the first ball screw 216, the first screw nut 217 is sleeved on the first ball screw 216 and is located between the first bearing housing 215 and the first motor seat 2111, the first nut seat 218 is connected with the first screw nut 217 through screws, the first photo-sensing piece 219 is fixed on the first nut seat 218 through screws, the first stepping motor 2112 is fixed on the first motor seat 2112 and the first motor seat 2112 is fixed on both ends of the first ball screw 2112, and the first coupler 2112 is sleeved on both ends of the first motor seat 2112;
The Y-axis moving part 22 includes a Y-axis fixing plate 221, a second stepping motor 222, a second motor seat 223, a second coupling 224, a second photo-sensing piece 225, a second nut seat 226, a second screw nut 227, a second ball screw 228, a second linear guide 229, a second bearing seat 2210, a photo-electric slide rail seat 2211, a second photo-electric switch 2212 and a photo-electric slide rail 2213, the guide rails of the second motor seat 223, the second linear guide 229, the second bearing seat 2210 and the photo-electric slide rail seat 2211 are fixed on the upper surface of the Y-axis fixing plate 221, the second bearing seat 2210 and the second motor seat 223 are sleeved at two ends of the second ball screw 228, the second screw nut 227 is sleeved on the second ball screw 228 and is positioned between the second bearing seat 2210 and the second motor seat 223, the second nut seat 226 is connected to the second screw nut 227 through a screw, the second photo-sensing piece 225 is fixed on the second nut seat 226 through a screw, the second stepping motor 222 is fixed on the second seat 223, two ends of the second coupling 224 are sleeved on the second stepping motor seat 222 and the second photo-electric slide rail 2213 respectively, and the second coupling 224 is fixed on the second photo-electric slide rail seat 2213;
the Y-axis fixing plate 221 is fixedly connected with the slider of the first linear guide 212, the slider of the first linear guide 212 is slidably connected with the slide rail, the Y-axis fixing plate 221 is fixedly connected with the first nut seat 218 through screws, the detecting portions 23 are respectively fixedly connected with the slider of the second linear guide 229, the detecting portions are fixedly connected with the second nut seat 226 through screws, and the slider of the second linear guide 229 is slidably connected with the slide rail.
As shown in fig. 4, the X-axis moving part is provided with two first photoelectric switches 213 respectively mounted on the photoelectric guide rails 214, corresponding to the origin and the limit position during the movement of the first ball screw nut 217 in design, to ensure the movement of the first ball screw nut 217 between the origin and the limit position. When the first stepper motor 2112 rotates to drive the first coupling 2110 to rotate, the first coupling 2110 then drives the first ball screw 216 to rotate, the first ball screw 216 drives the first screw nut 217 to move along the screw direction, and the first screw nut 217 then drives the first nut seat 218 and the first photosensitive web 219 to move along the screw direction. If the first light sensing piece 219 moves to the limit position, the first photoelectric switch 213 corresponding to the limit position feeds back a signal to the control system, and the system alarms and prompts the reset origin, so that the movement in the X-axis direction is realized.
As shown in fig. 5, the Y-axis moving part is provided with two second photoelectric switches 2212 respectively mounted on the photoelectric slide rail seat 2211, corresponding to the origin and the limit position in the moving process of the second ball screw nut 227, to ensure that the second ball screw nut 227 moves between the origin and the limit position. When the second stepper motor 222 rotates to drive the second coupling 224 to rotate, the second coupling 224 then drives the second ball screw 228 to rotate, the second ball screw 228 drives the second screw nut 227 to move along the screw direction, and the second screw nut 227 then drives the second nut seat 226 and the second light sensing sheet 225 to move along the screw direction. If the second light sensing sheet 225 moves to the limit position, the second photoelectric switch 2212 corresponding to the limit position feeds back a signal to the control system, and the system alarms and prompts the reset origin, so that the movement in the Y-axis direction is realized.
As shown in fig. 6 and 7, the detecting portion 23 includes a light source device 231, an objective lens 232, an integrating sphere 233, a spectrometer 234, a reflecting mirror 235, a light source processing device 236, an optical path module 237 and a CCD camera 238, wherein the upper surface of the integrating sphere 233 is slightly lower than the upper surface of the suction cup, and the objective lens 232 is disposed above the integrating sphere 233.
In this embodiment, the light source device 231 is a halogen lamp generator, which needs to detect the light transmittance of the glass sheet in different wave bands of 400-1000nm, and the halogen lamp covers the wave bands of 400-1000nm, so that the light source has smooth curve and stable energy. The integrating sphere 233 is a hollow sphere with an inner wall coated with a diffuse white reflective material, and has two holes formed on the wall thereof for light entrance and receiving holes for receiving light receiving devices, and light is collected by the integrating sphere through the light entrance, and scattered very uniformly inside the integrating sphere after being reflected multiple times inside the integrating sphere, so that the measuring result can be made more reliable by measuring the luminous flux using the integrating sphere.
The spectrometer 234 can decompose light with complex components into spectral lines, and in the invention, the data analysis is mainly performed on the luminous flux of the integrating sphere 233 to detect the transmittance of the light hole in the environment of the display screen to be detected. The light source processing device 236 includes a diaphragm 2361, a first lens 2362, a second lens 2363, and a third lens 2364 in this order in terms of the light propagation direction, mainly converting divergent light beams into parallel light beams.
The objective lens 232 can be used not only to focus the light when detecting the transmittance, but also to image the object under the objective lens. The optical path module 237 includes a fourth lens 2371, a fifth lens 2372 and a sixth lens 2373 in order according to the light propagation direction, and has the same structure and principle as the aforementioned first lens 2362, second lens 2363 and third lens 2364, and mainly converts the divergent light beam into a parallel light beam.
The CCD camera 238 can transmit the image of the objective lens 232 to the processor, wherein the processor can be set as a computer, and the human eyes on the computer can observe whether the ambient light hole of the display screen to be tested falls on the detection port, so that the observation and reference can be clearly performed, the accurate positioning can be realized, and the human eyes can clearly see whether the detection spot is in the center of the detection hole.
The specific transmission path is as follows: the light source device 231 emits incident light, the incident light enters the light source processing device 236 through the coupling optical fiber, the light is reflected by the reflecting mirror 235 and then enters the objective lens 232 to be focused into light spots, the light spots penetrate through the ambient light hole of the display screen 4 to be measured and enter the integrating sphere 233 to be measured, and the measured data are transmitted to the spectrometer 234 to be analyzed for light transmittance.
The reflected light beam of the display screen 4 to be tested enters the CCD camera 238 after being transmitted by the objective 232, the reflecting mirror 235 and the light path module 237, so that a dynamic image can be generated on a computer, and at the moment, the detection part 23 can be driven to move by moving the X-axis moving part and the Y-axis moving part according to the image, so that the light inlet hole of the adjusting integrating sphere 233 is aligned with the center of the ambient light hole of the display screen to be tested, and the light spot can be accurately irradiated in the detection hole of the display screen to be tested, thereby realizing accurate positioning of the display screen to be tested and improving the accuracy.
The working process of the invention is as follows:
After the display screen 4 to be tested is placed on the sucker, the turntable rotates to a detection station, the X-axis moving part 21 and the Y-axis moving part 22 move and are combined with a CCD camera of the detection part to carry out imaging observation, so that an ambient light hole of the display screen to be tested is aligned with a light inlet hole of the integrating sphere 233, the light source device 231 is started to emit light beams, the light beams enter the light source processing device 236 through an optical coupler fiber, the light source processing device 236 changes the scattered light beams into parallel light beams, the parallel light beams are reflected to the objective lens 232 through the reflecting mirror 235, the parallel light beams passing through the objective lens 232 are focused into light spots, the light spots pass through the detection hole of the display screen to be tested and enter the integrating sphere 233 to be processed, and the processed data are transmitted to the spectrometer 234 to carry out light transmittance analysis.
The invention has the following advantages:
1. The manual operation mode of replacing one piece after detecting is changed, continuous feeding and detection are realized, labor is saved, and detection efficiency is improved.
2. The structure of the stepping motor and the ball screw is adopted, and the CCD camera is combined for imaging to correct the positions of the light holes and the light source spots in the environment of the display screen to be tested, so that errors are reduced, the correction is more accurate, and the correction speed is improved.
3. Manual operation procedures are reduced, and the transmittance detection variation is more automatic.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An apparatus for detecting spectral transmittance, comprising: a turntable assembly (1) and a light transmittance detection assembly (2);
The circumference of the turntable assembly (1) is uniformly provided with a feeding station, a correcting station, a detecting station and a discharging station according to procedures, and the light transmittance detecting assembly (2) is arranged on the detecting station;
The light transmittance detection assembly (2) comprises an X-axis moving part (21), a Y-axis moving part (22) and a detection part (23), wherein the X-axis moving part (21) is connected with the Y-axis moving part (22), and the Y-axis moving part (22) is connected with the detection part (23);
The detection part (23) comprises a light source device (231), an objective lens (232), an integrating sphere (233), a spectrometer (234), a reflecting mirror (235), a light source processing device (236), a light path module (237) and a camera (238);
The light beam emitted by the light source device (231) is changed into a parallel light beam through the light source processing device (236), the parallel light beam is reflected to the objective lens (232) through the reflecting mirror (235), the objective lens (232) focuses the parallel light beam into a light spot, the light spot passes through an ambient light hole of the display screen (4) to be detected and enters the integrating sphere (233), and the integrating sphere (233) transmits the light flux to the spectrometer (234) for light transmittance analysis after measuring the light flux;
The reflected light beam of the display screen (4) to be detected is imaged through the objective lens (232), and the imaged light beam is changed into a parallel light beam through the reflecting mirror (235) and the light path module (237) in sequence and then is transmitted to the camera (238); the camera (238) is a CCD camera;
The X-axis moving part (21) comprises an X-axis fixing plate (211), a first linear guide rail (212), a first photoelectric switch (213), a photoelectric guide rail (214), a first bearing seat (215), a first ball screw (216), a first screw nut (217), a first nut seat (218), a first light sensing piece (219), a first coupler (2110), a first motor seat (2111) and a first stepping motor (2112), wherein the X-axis fixing plate (211) is arranged on a frame, a guide rail of the first linear guide rail (212) is fixed on the upper surface of the X-axis fixing plate (211), the first bearing seat (215), the first motor seat (2111) and the photoelectric guide rail (214) are arranged on the lower surface of the X-axis fixing plate (211), the first bearing seat (215) and the first motor seat (2111) are sleeved at two ends of the first ball screw (216), the first screw nut (217) is sleeved on the first ball screw nut (216) and is positioned between the first motor seat (215) and the first motor seat (2111) and the first ball screw nut (218) is fixed on the first motor seat (2111), two ends of the first coupler (2110) are respectively sleeved on the first stepping motor (2112) and the first ball screw (216), and the first photoelectric switch (213) is fixed on the photoelectric guide rail (214);
The Y-axis moving part (22) comprises a Y-axis fixing plate (221), a second stepping motor (222), a second motor seat (223), a second coupling (224), a second light sensing piece (225), a second nut seat (226), a second screw nut (227), a second ball screw (228), a second linear guide rail (229), a second bearing seat (2210), an optoelectronic rail seat (2211), a second optoelectronic switch (2212) and an optoelectronic rail (2213), the second motor seat (223), a guide rail of the second linear guide rail (229), the second bearing seat (2210) and the optoelectronic rail seat (2211) are fixed on the upper surface of the Y-axis fixing plate (221), the second bearing seat (2210) and the second motor seat (223) are sleeved at two ends of the second ball screw (228), the second screw nut (227) is sleeved on the second ball screw (228) and is positioned between the second bearing seat (2210) and the second motor seat (226), the second motor seat (223) is connected with the second ball screw nut (223), the second motor seat (223) is fixed on the second motor seat (223), two ends of the second coupling (224) are respectively sleeved on the second stepping motor (222) and the second ball screw (228), the photoelectric slide rail (2213) is fixed on the photoelectric slide rail seat (2211), and the second photoelectric switch (2212) is fixed on the photoelectric slide rail (2213);
The Y-axis fixing plate (221) is fixedly connected with the sliding block of the first linear guide rail (212), the sliding block of the first linear guide rail (212) is slidably connected with the guide rail of the first linear guide rail (212), the Y-axis fixing plate (221) is connected with the first nut seat (218), the detection part (23) is fixedly connected with the sliding block of the second linear guide rail (229), the sliding block of the second linear guide rail (229) is slidably connected with the guide rail of the second linear guide rail (229), and the detection part (23) is connected with the second nut seat (226).
2. The apparatus for detecting spectral transmittance according to claim 1, wherein the light source processing means (236) comprises, in order of a light propagation direction, a diaphragm (2361), a first lens (2362), a second lens (2363) and a third lens (2364).
3. The apparatus for detecting spectral transmittance according to any one of claims 1 or 2, wherein the optical path module (237) includes a fourth lens (2371), a fifth lens (2372) and a sixth lens (2373) in this order according to the propagation direction of light.
4. A device for detecting spectral transmittance according to claim 3, characterized in that the turntable assembly (1) comprises a motor (11), a motor transition piece (12), a turntable (13), a vacuum line and a suction cup (14), the motor (11) is connected with the motor transition piece (12), the motor transition piece (12) is in threaded connection with the turntable (13), the suction cup (14) is uniformly fixed at the edge of the surface of the turntable (13), and the suction cup (14) is communicated with the vacuum line.
5. The device for detecting the spectral transmittance according to claim 4, wherein the number of the suckers (14) is 4, and the suckers are respectively and correspondingly arranged at a feeding station, a correcting station, a detecting station and a discharging station.
6. The apparatus for detecting spectral transmittance according to claim 5, further comprising a processor (3), wherein the processor (3) is electrically connected to the spectrometer (234) and the camera (238), respectively.
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| CN115962921A (en) * | 2023-01-06 | 2023-04-14 | 深圳市磐锋精密技术有限公司 | Cell-phone screen luminousness performance check out test set |
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| CN204374072U (en) * | 2015-01-06 | 2015-06-03 | 北京环宇亦鼓科技有限公司 | A kind of atomic absorption spectrophotometer (AAS) auto injection equipment |
| CN206945525U (en) * | 2017-04-21 | 2018-01-30 | 东莞市捷杨光电科技有限公司 | A kind of spectral transmittance detection instrument |
| CN109211788A (en) * | 2018-10-30 | 2019-01-15 | 深圳鹏瑞智能科技有限公司 | A kind of display screen multistation automatic optical detection device |
| CN212904523U (en) * | 2020-04-21 | 2021-04-06 | 东莞市捷扬光电科技有限公司 | Device for detecting spectrum transmittance |
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| CN106248638A (en) * | 2016-10-09 | 2016-12-21 | 佛山市北创光电科技有限公司 | Spherical lens reflectance-transmittance incorporated light spectrometer |
| CN109738360A (en) * | 2019-01-28 | 2019-05-10 | 广州玉科仪器有限公司 | Micro transmittance tester and micro transmittance test stand |
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| CN204374072U (en) * | 2015-01-06 | 2015-06-03 | 北京环宇亦鼓科技有限公司 | A kind of atomic absorption spectrophotometer (AAS) auto injection equipment |
| CN206945525U (en) * | 2017-04-21 | 2018-01-30 | 东莞市捷杨光电科技有限公司 | A kind of spectral transmittance detection instrument |
| CN109211788A (en) * | 2018-10-30 | 2019-01-15 | 深圳鹏瑞智能科技有限公司 | A kind of display screen multistation automatic optical detection device |
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