CN115479669A

CN115479669A - Absolute spectrum acquisition method and system

Info

Publication number: CN115479669A
Application number: CN202211085278.4A
Authority: CN
Inventors: 刘永华; 卢振冰; 胡家同
Original assignee: Shenzhen Mooncell Electronics Co ltd
Current assignee: Shenzhen Mooncell Electronics Co ltd
Priority date: 2022-08-24
Filing date: 2022-09-06
Publication date: 2022-12-16
Also published as: CN217953675U; CN217953674U

Abstract

The application relates to the field of spectrum acquisition technology, in particular to an absolute spectrum acquisition method and system, wherein the absolute spectrum acquisition method comprises the following steps: obtaining light rays of an incident light path in an optical channel; splitting an incident light path into a first light path and a second light path; transmitting the light of the first light path to an absolute spectrum acquisition module; transmitting the light of the second light path to the image sensor; obtaining a calibration optical image based on the sensing signal of the image sensor; and the absolute spectrum acquisition module acquires data of light rays in an acquisition area in the detection picture to obtain absolute spectrum information of the detected object. The optical imaging of the second optical path in the image sensor can be utilized to determine whether the light of the measured object can be accurately incident into the absolute spectrum acquisition module through the first optical path, so that the absolute spectrum acquisition module can accurately acquire data of the measured object, and the measurement error is reduced.

Description

Absolute spectrum acquisition method and system

The priority basis includes: application number 2022110205286, entitled "Absolute Spectrum Collection method and System", the invention application with application date of 2022, 08 months and 24 days.

Technical Field

The present application relates to the field of spectrum collection technologies, and in particular, to an absolute spectrum collection method and system.

Background

The absolute spectrum collecting system is one of important parts of a spectral radiance luminance meter, and is mainly used for collecting the absolute spectrum of a light source so as to measure the spectral distribution, the chromaticity, the tristimulus values, the luminance and the corrected color temperature of each wave band of the light source. The absolute spectrum acquisition system has the advantages of high-efficiency measurement of low brightness and high contrast, high-precision rapid measurement during low brightness, low polarization error and the like, can obtain stable measurement data even facing light sources with different characteristics, and is widely applied to the detection of the color uniformity of a screen light source at present.

The related art absolute spectrum collection system includes a collection lens, a close-up lens (also called an eyepiece), and a photodiode array. In the collecting process, light of the detected object is firstly incident into the absolute spectrum collecting system from the collecting lens, then middle light in the incident light can be incident into the photodiode array, and edge light in the incident light can be reflected to the close-up lens.

The common absolute spectrum acquisition system can select different optical measurement angles according to different application scenes, so that the relative position of a detected object appearing in an acquisition picture of the photodiode array is positioned in a specified locking area. When the measured object is measured, an operator can indirectly determine the measured object by observing the position of the peripheral picture of the measured object in the ocular imaging through the close-up lens, and then manually move the acquisition lens, so that the measured object is indirectly positioned in a specified locking area in the ocular imaging. The adjusting mode is that human eyes directly observe the close-up lens, so that human eye vision errors exist, meanwhile, a certain angle exists between the middle part of incident light and the photodiode array instead of vertical incidence, so that measurement errors exist during absolute spectrum acquisition, and especially when the measured object is a small area and cannot fill the acquisition picture of the whole detector, the errors are larger when the measured object falls on different positions on the acquisition picture of the detector.

Disclosure of Invention

The application provides an absolute spectrum acquisition method and system, which adopts the following technical scheme:

an absolute spectral acquisition method comprising: obtaining light rays of an incident light path in an optical channel, wherein the light rays emitted by a measured object enter the optical channel to form the incident light path; splitting an incident light path into a first light path and a second light path; transmitting the light of the first light path to an absolute spectrum acquisition module; transmitting the light of the second light path to the image sensor; obtaining a calibration optical image based on the sensing signal of the image sensor, wherein the position of the light of the second optical path in the calibration optical image can reflect the position of the light of the first optical path in a detection picture of the absolute spectrum acquisition module; and the absolute spectrum acquisition module acquires data of light rays in an acquisition area in the detection picture to obtain absolute spectrum information of the detected object.

Optionally, before the step of acquiring data of the light in the acquisition region in the detection picture by the absolute spectrum acquisition module to obtain the absolute spectrum information of the object to be measured, the method further includes: acquiring a target position, wherein the target position is used for reflecting the relative position of the measured object in the calibration optical image; determining a calibration area, wherein the calibration area is used for reflecting the relative position of the acquisition area in the detection picture; and judging whether the target position deviates from the calibration area, and outputting offset adjusting information based on the offset from the target position to the calibration area according to a judgment result.

Optionally, the method further includes: the mobile calibration module drives the light inlet assembly to move based on the offset adjustment information so as to enable the target position to move towards the calibration area.

An absolute spectrum acquisition system comprising: the light-in component is provided with an optical channel, and light emitted by the object to be measured enters the optical channel to form the incident light path; a light splitting member passing through the incident light path for splitting the incident light path into a first light path and a second light path; the spectrum connecting part is arranged on the first light path and is used for transmitting the light of the first light path to the absolute spectrum collecting module; the image sensor connecting part is arranged on the second light path and is used for transmitting the light of the second light path to the image sensor; the light sensing control module is used for obtaining a calibration optical image based on a sensing signal of the image sensor, wherein the position of the light ray of the second light path in the calibration optical image can reflect the position of the light ray of the first light path in a detection picture of the absolute spectrum acquisition module; and the absolute spectrum acquisition module is used for acquiring data of light rays in an acquisition area in the detection picture to obtain absolute spectrum information of the detected object.

Optionally, the target positioning module is configured to obtain a target position, where the target position is used to reflect a relative position of the measured object in the calibration optical image; an initial calibration module, configured to determine a calibration area, where the calibration area is used to reflect a relative position of the acquisition area in the detection frame; and the deviation calculation module is used for judging whether the target position deviates from the calibration area or not and outputting deviation adjustment information based on the deviation amount from the target position to the calibration area according to the judgment result.

According to the absolute spectrum acquisition method and system based on the technical scheme, the incident light path is divided into the first light path and the second light path and is respectively transmitted to the absolute spectrum acquisition module and the image sensor, so that light rays emitted from the same position can be respectively transmitted to the image sensor and the absolute spectrum acquisition module, whether the light rays of the object to be measured can be accurately transmitted to the absolute spectrum acquisition module through the first light path can be determined by optical imaging of the second light path in the image sensor, the absolute spectrum acquisition module can accurately acquire data of the object to be measured, and the measurement error is reduced.

An absolute spectral acquisition method comprising: the method comprises the steps that light of an incident light path in an optical channel is obtained, wherein the light emitted by a measured object enters the optical channel to form the incident light path, a function switching position is arranged at the tail end of the optical channel, and the incident light path can be switched into a first light path or a second light path after passing through the function switching position; transmitting the light passing through the function switching position to an image sensor along the second optical path; obtaining a calibration optical image based on the sensing signal of the image sensor; transmitting the light rays passing through the function switching position to an absolute spectrum acquisition module along the first light path; the position of the light ray of the second optical path in the calibration optical image can reflect the position of the light ray of the first optical path in a detection picture of the absolute spectrum acquisition module; and the absolute spectrum acquisition module acquires data of light rays in an acquisition area in the detection picture to obtain absolute spectrum information of the detected object.

Optionally, before the step of causing the light passing through the functional switching position to propagate to the absolute spectrum collection module along the first optical path, the method further includes: acquiring a target position, wherein the target position is used for reflecting the relative position of the measured object in the calibration optical image; determining a calibration area, wherein the calibration area is used for reflecting the relative position of the acquisition area in the detection picture; judging whether the target position deviates from the calibration area, and outputting offset adjustment information based on the offset from the target position to the calibration area according to a judgment result;

Optionally, a spectrum connecting portion, an image sensor connecting portion and a movable block are arranged at the function switching position, wherein the spectrum connecting portion corresponds to the first light path, the image sensor connecting portion corresponds to the second light path, and the movable block is used for driving the spectrum connecting portion or the image sensor connecting portion to move to the function switching position; the step of causing the light passing through the function switching position to propagate to the image sensor along the second optical path includes: the movable block drives the image sensor connecting part to move to the function switching position, so that the incident light path is switched to the second light path after passing through the function switching position, and light rays passing through the function switching position are transmitted to the image sensor along the second light path; the step of transmitting the light passing through the functional switching position to the absolute spectrum acquisition module along the first optical path includes: the movable block drives the spectrum connecting part to move to the function switching position, so that the incident light path is switched into the first light path after passing through the function switching position, and light passing through the function switching position is transmitted to the absolute spectrum acquisition module along the first light path.

An absolute spectrum acquisition system comprising: the optical path switching device comprises an optical component, a first optical path and a second optical path, wherein the optical component is provided with an optical channel and used for obtaining light of the optical channel, the light emitted by a measured object enters the optical channel to form an incident light path, the tail end of the optical channel is provided with a function switching position, and the incident light path can be switched into the first light path or the second light path after passing through the function switching position; the movable block is movably arranged on the light inlet component; the image sensor connecting part is arranged in a region where the movable block can pass through the function switching position, and is used for switching the incident light path into the second light path after passing through the function switching position so as to enable light rays passing through the function switching position to be transmitted to the image sensor along the second light path; the light sensing control module is used for obtaining a calibration optical image based on a sensing signal of the image sensor; the spectrum connecting part is arranged in a region where the movable block can pass through the function switching position, and is used for switching the incident light path into the first light path after passing through the function switching position so as to enable light rays passing through the function switching position to be transmitted to the absolute spectrum acquisition module along the first light path; the position of the light ray of the second optical path in the calibration optical image can reflect the position of the light ray of the first optical path in a detection picture of an absolute spectrum acquisition module; the spectrum connecting part is arranged in a region where the movable block can pass through the function switching position, so that light passing through the function switching position is transmitted to the absolute spectrum acquisition module; and the absolute spectrum acquisition module is used for acquiring data of light rays in an acquisition area in the detection picture to obtain absolute spectrum information of the detected object.

Optionally, the method further includes: the target positioning module is used for acquiring a target position, wherein the target position is used for reflecting the relative position of the measured object in the calibration optical image; an initial calibration module, configured to determine a calibration area, where the calibration area is used to reflect a relative position of the acquisition area in the detection frame; the deviation calculation module is used for judging whether the target position deviates from the calibration area or not and outputting deviation adjustment information based on the deviation amount from the target position to the calibration area according to a judgment result; optionally, the method further includes: the mobile calibration module drives the light inlet assembly to move based on the offset adjustment information so as to enable the target position to move towards the calibration area.

According to the absolute spectrum acquisition method and system based on the technical scheme, the incident light path is transmitted to different terminals, the incident angle of the incident light path is not changed, and the light is not changed, so that the light emitted from the same position can be transmitted to the image sensor and the absolute spectrum acquisition module respectively. The optical imaging of the second optical path in the image sensor can be utilized to determine whether the light of the measured object can be accurately incident into the absolute spectrum acquisition module through the first optical path, so that the absolute spectrum acquisition module can accurately acquire data of the measured object, and the measurement error is reduced.

Drawings

Fig. 1 is a schematic diagram illustrating an appearance of an absolute spectrum acquisition system according to a first embodiment of the present application;

fig. 2 is a schematic diagram illustrating an optical incident device, a light splitter, an absolute spectrum acquisition module, an image sensor, and other devices according to an embodiment of the present disclosure;

fig. 3 is a conceptual diagram of an incident light path, a first light path and a second light path of an absolute spectrum collection system according to an embodiment of the present application;

fig. 4 is a conceptual diagram illustrating the imaging effect of the first optical path and the second optical path of the absolute spectrum acquisition system according to the first embodiment of the present application;

FIG. 5 is a schematic flow chart of a method for absolute spectrum acquisition according to a first embodiment of the present application;

FIG. 6 is a conceptual diagram illustrating an operation mode of an absolute spectrum collection method according to an embodiment of the present application;

FIG. 7 is a functional block diagram of an absolute spectrum acquisition system according to an embodiment of the present application;

FIG. 8 is a schematic flow chart of a second method for absolute spectrum acquisition according to the second embodiment of the present application;

FIG. 9 is a conceptual diagram of calibrating an optical image in an absolute spectrum acquisition method according to a second embodiment of the present application;

FIG. 10 is a schematic diagram illustrating the operation of an absolute spectrum acquisition system according to a second embodiment of the present application;

FIG. 11 is a functional block diagram of an absolute spectrum acquisition system according to a second embodiment of the present application;

fig. 12 is a schematic external view of an absolute spectrum acquisition system according to a third embodiment of the present application;

fig. 13 is a schematic diagram illustrating an optical incident module, an absolute spectrum acquisition module, an image sensor, and other components according to a third embodiment of the present disclosure;

fig. 14 is a schematic diagram showing the operation states of the absolute spectrum acquisition system according to the third embodiment of the present application in different states, in which the image sensor connection portion is located at the functional switch position in fig. (a), and the spectrum connection portion is located at the functional switch position in fig. (b);

fig. 15 is a conceptual diagram illustrating the imaging effect of the first optical path and the second optical path of the absolute spectrum collection system according to the third embodiment of the present application;

fig. 16 is a schematic view illustrating an optical lens, an optical holder, a light transmitter, a movable block, and other components according to a third embodiment of the present disclosure;

FIG. 17 is a schematic diagram of a movable block, an image sensor connection portion, a spectrum connection portion, and other components according to a third embodiment of the present disclosure;

FIG. 18 is a schematic diagram of the components of the movable block, the driving module, and the like according to the third embodiment of the present application;

FIG. 19 is a schematic flowchart of a third method for absolute spectrum acquisition according to the present application;

fig. 20 is a conceptual diagram illustrating an operation mode of an absolute spectrum acquisition method according to a third embodiment of the present application, in which the image sensor connection portion is located at the functional switch position in (c) and the spectrum connection portion is located at the functional switch position in (d);

FIG. 21 is a functional block diagram of an absolute spectrum acquisition system according to a third embodiment of the present application;

FIG. 22 is a schematic flow chart of an absolute spectrum collection method according to the fourth embodiment of the present application;

FIG. 23 is a schematic diagram of an absolute spectrum acquisition system according to a fourth embodiment of the present application;

fig. 24 is a functional block diagram of an absolute spectrum acquisition system according to a fourth embodiment of the present application.

Description of reference numerals:

1. a light inlet component; 11. a light bracket is arranged; 12. an optical lens; 13. a light transmitter; 14. a hidden bottom buckle; 15. a spectrum connecting part; 16. an image sensor connecting portion; 17. function switching positions; 2. a light splitting member; 3. an absolute spectrum acquisition module; 31. detecting a picture; 32. collecting an area; 4. an image sensor; 41. calibrating the optical image; 42. a target location; 43. a calibration area; 5. a housing; 51. a display screen; 6. an optical adjustment member; 61. an attenuation sheet; 62. a filter hole; 63. an aperture adjusting sheet; 64. an aperture hole; 7. a movable block; 8. a drive assembly; 10. a light sensing control module; 20. a target positioning module; 30. an initial calibration module; 40. a deviation calculation module; 50. a mobile calibration module; 60. a sensing switching module; 70. and a spectrum switching module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiments of the present invention are described in further detail below with reference to the accompanying figures 1-24 of the specification.

The embodiment of the application discloses an absolute spectrum acquisition system.

The first embodiment is as follows:

referring to fig. 1 and 2, the absolute spectrum collection system includes a light incident module 1, a light splitting component 2, a spectrum connection portion 15, an image sensor connection portion 16, a photosensitive control module 10, an absolute spectrum collection module 3, and a housing 5.

Referring to fig. 1 and 2, the light incident module 1 is fixed to the housing 5, and the light incident module 1 allows light emitted from the object to be measured to enter the housing 5. The light inlet component 1 is provided with an optical channel, and light emitted by a measured object enters the optical channel to form the incident light path for propagation.

Referring to fig. 1 and 2, a light splitting member 2 is fixed in a housing 5, and the light splitting member 2 is disposed at a distal end of an incident light path for splitting the incident light path into a first light path and a second light path.

Referring to fig. 3, the light splitter 2 is preferably an optical device such as a spectroscope or a half-silvered mirror that can split the light path into a plurality of light paths. When passing through the light splitting element 2, the light of the incident light path transmits a light path which is collinear with the incident light path and is a first light path, and simultaneously, the light of the incident light path reflects a light path which is arranged at an angle with the incident light path and is a second light path.

Referring to fig. 3, the spectrum connecting portion 15 is disposed on the first light path, connected between the light splitter 2 and the absolute spectrum collecting module 3, and configured to transmit the light of the first light path to the absolute spectrum collecting module 3.

Referring to fig. 3 and 4, the absolute spectrum acquisition module 3 is configured to perform data acquisition on light rays of an acquisition area 32 located in a detection frame 31 of the absolute spectrum acquisition module to obtain absolute spectrum information of a measured object. Specifically, the absolute spectrum acquiring module 3 is preferably a photodiode array, and the detection picture 31 of the absolute spectrum acquiring module 3 refers to an acquisition picture of the photodiode array.

Referring to fig. 3 and 4, the detection frame 31 is preset with an acquisition region 32, and when the light of the object to be measured falls on the acquisition region 32 of the detection frame 31, the absolute spectrum acquisition module 3 has a calculation error in data acquisition on the object to be measured within an allowable error range.

The image sensor connecting portion 16 is disposed on the second optical path, connected between the light splitter 2 and the image sensor 4, and configured to transmit the light of the second optical path to the image sensor 4.

When the light is transmitted to the image sensor 4, the light falls on the photosensitive surface of the image sensor 4, and the image sensor 4 converts the light image on the photosensitive surface into an electrical signal in a proportional relationship with the light image by using a photoelectric conversion function, so as to output a sensing signal based on the received light of the second optical path.

The light sensing control module 10 is electrically connected to the image sensor 4, and after receiving the sensing signal of the image sensor 4, the light sensing control module 10 obtains the calibration optical image 41 based on the sensing signal.

Since the first optical path and the second optical path both originate from the incident optical path and the first optical path and the second optical path have consistency in the optical imaging, the relative position of the light of the second optical path in the calibration optical image 41 can reflect the relative position of the light of the first optical path in the detection frame 31 of the absolute spectrum acquisition module 3.

Further, the content of the light of the first optical path entering the absolute spectrum acquisition module 3 can be reflected by using an optical image displayed by the image sensor 4 based on the light of the second optical path. Moreover, since the first light path is formed by the incident light path transmitting through the light splitting element 2, the second light path is formed by the incident light path refracting at the light splitting element 2, and the positions of the first light path and the second light path on the incident light path are corresponding, the situation that the light of the first light path approaches the middle light of the incident light path and the light of the second light path approaches the edge light of the incident light path does not occur, and the consistency of the light between the first light path and the second light path is higher.

In a test scenario of practical application, for example, when a specified test position on an LED screen is tested for brightness uniformity, the tested object is the test position on the LED screen, so that light of the LED screen enters the light incident component 1 to form an incident light path, the incident light path is divided into a first light path and a second light path, the second light path is transmitted to the image sensor 4 to obtain a corresponding calibration optical image 41, and whether the deviation amount from the position of the light of the first light path in the detection picture 31 to the collection area 32 is within an allowable deviation range is determined according to the relative position of the light of the second light path in the optical image under the same state.

If so, it indicates that the light in the first optical path can reach the collection area 32, and the absolute spectrum collection module 3 can directly perform data collection on the first optical path to obtain the absolute spectrum information of the measured object.

If not, the relative position between the optical component 1 and the object to be measured can be adjusted until the relative position of the light ray of the second optical path in the optical image is within the specified area range, so that whether the deviation amount from the position of the light ray of the first optical path in the detection picture 31 to the acquisition area 32 is within the allowable deviation range in the same state is determined, and then the absolute spectrum acquisition module 3 is used for acquiring data of the first optical path to obtain the absolute spectrum information of the object to be measured.

It can be understood that, in the first technical solution of the embodiment of the present application, the incident light path is divided into the first light path and the second light path, and the first light path and the second light path are respectively transmitted to the absolute spectrum acquisition module 3 and the image sensor 4, so that the light emitted from the same position can be respectively transmitted to the image sensor 4 and the absolute spectrum acquisition module 3, and whether the light of the object to be measured can be accurately transmitted to the absolute spectrum acquisition module 3 through the first light path can be determined by using the optical imaging of the second light path in the image sensor 4, so that the absolute spectrum acquisition module 3 can accurately perform data acquisition on the object to be measured, and the measurement error is reduced. Compared with the technical scheme in the background art, on one hand, the technical scheme of the application cancels the arrangement of an eyepiece (a close-up lens), replaces the adjustment of direct observation of the eyepiece by human eyes, reduces the error of human vision, and simultaneously, light vertically enters the absolute spectrum acquisition module, thereby improving the measurement precision during absolute spectrum acquisition, and as the first light path is formed by transmitting the incident light path through the light splitting piece 2 and the second light path is formed by refracting the incident light path at the light splitting piece 2, the light distribution of the first light path and the second light path relative to the incident light path is almost consistent, the condition that the light of the first light path approaches the middle light of the incident light path and the light of the second light path approaches the edge light of the incident light path can not occur, and therefore, the optical image in the image sensor 4 can more accurately complete the content of the absolute spectrum acquisition module 3.

Referring to fig. 1 and fig. 2, for a detailed description of the structure of the light incident assembly 1, in the present embodiment, the light incident assembly 1 includes a light incident bracket 11 and a light incident lens 12, wherein the light incident lens 12 is embedded and fixed on the housing 5, and one end of the light incident lens 12 is exposed outside the housing 5 to obtain light. The central axis direction of the light entrance lens 12 is arranged in the horizontal direction.

The optical bracket is fixedly installed in the housing 5, an accommodating hole is formed in one end, facing the light-entering lens 12, of the light-entering bracket 11, the shape and the outline of the inside of the accommodating hole are matched with the shape and the outline of the light-emitting end of the light-entering lens 12, and the light-emitting end of the light-entering lens 12 is accommodated in the accommodating hole.

The light incidence support 11 is provided with a light splitting hole for accommodating the light splitting piece 2, and the light splitting piece 2 is installed and fixed in the light splitting hole. The light splitting hole is communicated with the accommodating hole and passes through the central axis of the light-entering lens 12, so that the light splitting hole and the light splitting piece 2 positioned in the light splitting hole can be aligned to the light-emitting end of the light-entering lens 12.

In the internal structure of the light incident holder 11, an optical channel is formed in a space between the light incident lens 12 and the light splitting element 2, light incident on the light incident lens 12 passes through the optical channel to form an incident light path, and the light on the incident light path is transmitted to the light splitting element 2.

In the present embodiment, the central axis of the light incident lens 12 is disposed in the horizontal direction, the optical channel is also disposed in the horizontal direction, and the incident light path extends in the horizontal direction. In some embodiments, the central axis of the light entrance lens 12 may also be disposed in an oblique direction or a vertical direction, and the disposition direction of the optical channel and the extending direction of the incident light path may also be changed correspondingly.

In this embodiment, the light incident support 11 covers the light exiting end of the light incident lens 12 to form a light shielding structure capable of being sealed, so as to block the influence of the light not entering the light incident lens 12 on the light incident path inside the housing 5.

In this embodiment, the absolute spectrum collection module 3 is disposed on one side of the light incident support 11 away from the light incident lens 12, the image sensor 4 is disposed on the lower portion of the light incident support 11, and the light splitting hole is communicated with one side of the light incident support 11 toward the absolute spectrum collection module 3, so that the first light path split by the light splitting element 2 can point to the absolute spectrum collection module 3, and the light splitting hole is further communicated with the lower end of the light incident support 11, so that the second light path split by the light splitting element 2 can point to the image sensor 4.

Regarding the manner of transmitting the light of the second light path to the image sensor 4, in the present embodiment, a connection hole is formed at the lower portion of the light incident support 11, the image sensor 4 is disposed at the connection hole, the connection hole communicates with the light splitting hole, and the connection hole forms the image sensor connection portion 16.

Referring to the detailed description of the image sensor 4, in the present embodiment, the image sensor 4 is preferably a CCD camera, the image sensor 4 is fixed to the lower portion of the light incident bracket 11, and the light sensing surface of the image sensor 4 is facing the light splitting member 2 through the connecting hole from bottom to top in the vertical direction to receive the light of the second light path.

Regarding the way of the light of the first optical path propagating to the absolute spectrum collecting module 3, in the present embodiment, the light incident bracket 11 is connected with the light transmitter 13, and the light splitting hole is aligned with the light transmitter 13 to propagate the light to the light transmitter 13. In this embodiment, the spectrum connection portion 15 is specifically an optical fiber connector, one end of the optical transmitter 13 is aligned with and hermetically connected to the light splitting hole of the light incident bracket 11, and the other end of the optical transmitter 13 is butted with the optical fiber connector.

In this embodiment, the collection input end of the absolute spectrum collection module 3 is aligned with the light splitting element 2, and the central axis of the collection input end of the absolute spectrum collection module 3 is parallel or collinear with the central axis of the optical lens 12. The light coming out of the light entrance lens 12 will propagate to the optical fiber connector after passing through the light splitting component 2, and then propagate into the collection input end of the absolute spectrum collection module 3.

For further explanation of relevant components of the light inlet module 1, in the present embodiment, a dark bottom buckle 14 is disposed at one end of the light transmitter 13 close to the spectrum connecting portion 15, the dark bottom buckle 14 is disposed on the light transmitter 13 in a direction perpendicular to the axis of the light transmitter 13 and is fixedly connected to the light transmitter 13, and the dark bottom buckle 14 is preferably an electronic shutter.

The dark bottom buckle 14 can be opened/closed through a built-in shutter closing switch, when the shutter of the dark bottom buckle 14 is closed, light transmission between the light transmitter 13 and the spectrum connecting part 15 can be blocked, and at the moment, the absolute spectrum acquisition module 3 can acquire data of the equipment under the condition of no light; when the shutter of the dark buckle 14 is opened, the light of the light transmitter 13 can be transmitted to the spectrum connecting part 15, and the absolute spectrum collecting module 3 can collect the absolute spectrum information of the object to be measured.

For further explanation of relevant components of the light inlet module 1, in the present embodiment, the light inlet module 1 is further configured with an optical adjustment member 6, and the optical adjustment member 6 is disposed between the light inlet module 1 and the spectrum connection portion 15 through the light transmitter 13, and is used for adjusting the optical property of the light entering the absolute spectrum collection module 3, so as to facilitate collection of the absolute spectrum.

The optical adjusting member 6 comprises one or more combinations of an attenuation sheet 61 and an aperture adjusting sheet 63, the optical adjusting member 6 passes through a light path in an optical channel, wherein the attenuation sheet 61 can change the light attenuation degree entering the absolute spectrum acquisition module 3, and the aperture adjusting sheet 63 can change the light ray area size range degree entering the absolute spectrum acquisition module 3.

The side wall of the light transmitter 13 is provided with adjusting holes for the attenuation sheet 61 and the aperture adjusting sheet 63 to enter the optical channel, and the attenuation sheet 61 and the aperture adjusting sheet 63 are respectively inserted into the corresponding adjusting holes. In this embodiment, the light entering the light transmitter 13 passes through the aperture adjusting sheet 63 and then passes through the attenuating sheet 61.

The aperture adjusting sheet 63 is rotatably disposed on the light incident bracket 11, and the aperture adjusting sheet 63 is provided with a plurality of light path holes 64 around the axis of the rotation shaft, and the center line of the light path hole 64 is collinear or parallel with the central axis of the light incident lens 12, and the inner diameters of the light path holes 64 are different. The aperture hole 64 can limit the size range of the light ray area of the light ray, and the larger the inner diameter of the aperture hole 64 is, the larger the light ray area can pass through the aperture hole 64 is, the larger the imaging range is, otherwise, the smaller the imaging range is. By the aperture regulating sheet 63, it is possible to locate the specified light path hole 64 in the optical channel, thereby regulating the degree of restriction of the light path hole 64 by the light passing through the optical channel.

In this embodiment, the aperture adjusting piece 63 is powered by a first adjusting power source, which is a motor.

Further, the attenuation sheet 61 is rotatably disposed on the light incident support 11, and the attenuation sheet 61 is provided with a plurality of filter holes 62 around the axis of the rotation shaft, and the center line of the filter hole 62 is collinear or parallel with the central axis of the light incident lens 12. A filter lens is fixedly embedded in each filter hole 62, and the filter performance of each filter lens is different. By rotating the attenuator 61, a designated filter lens can be positioned in the optical channel, and the attenuator 61 is adjusted so as to adjust the attenuation degree of the light.

In this embodiment, the damping sheet 61 is powered by a second adjusting power source, which is a motor, to realize rotation.

In this embodiment, an absolute spectrum collecting method is provided, where the absolute spectrum collecting method corresponds to each functional component in the absolute spectrum collecting system in the above embodiments, such as the light incident component 1, the light splitting component 2, the spectrum connecting portion 15, the absolute spectrum collecting module 3, the image sensor connecting portion 16, and the image sensor 4.

The absolute spectrum acquisition method comprises the following steps:

referring to fig. 5 and 6, S101, light rays incident on an optical path in an optical channel are acquired.

The light incident component 1 obtains light rays of an incident light path in the optical channel. The light emitted from the object to be measured enters the optical channel of the light inlet component 1 to form an incident light path.

S102, dividing an incident light path into a first light path and a second light path.

Wherein the beam splitter 2 splits the incident light path into a first light path and a second light path. After the incident light path passes through the light splitting element 2, a part of light of the incident light path is transmitted through the light splitting element 2 to form a first light path, and a part of light of the incident light path is reflected on the light splitting element 2 to form a second light path.

It should be noted that, the process of dividing the incident light path into a plurality of light splits may also be light splits, and the light splits in the technical solution of the present application are to perform undifferentiated light splitting on the light in the incident light path, and are not performed on the specified positions of the light in the incident light path, such as the middle position and the edge light position in the incident light path.

In some possible embodiments, a light path formed by a part of light of the incident light path passing through the light splitting element 2 may be used as the second light path, and a light path formed by a part of light of the incident light path reflecting on the light splitting element 2 may be used as the first light path.

And S103, transmitting the light rays of the second light path to the image sensor 4.

Wherein the image sensor connection 16 propagates the light of the second optical path to the image sensor 4. When the light is transmitted to the image sensor 4, the light falls on the photosensitive surface of the image sensor 4, and the image sensor 4 converts the light image on the photosensitive surface into an electrical signal in a corresponding proportional relationship with the light image by using a photoelectric conversion function, thereby outputting a sensing signal based on the received light of the second optical path.

S104, based on the sensing signal of the image sensor 4, the calibration optical image 41 is obtained.

After receiving the sensing signal of the image sensor 4, the light sensing control module 10 obtains the calibration optical image 41 based on the sensing signal.

And S105, transmitting the light of the first light path to the absolute spectrum acquisition module 3.

The spectrum connecting portion 15 transmits the light of the first optical path to the absolute spectrum collecting module 3.

The position of the light of the second optical path in the calibration optical image 41 can reflect the position of the light of the first optical path in the detection frame 31 of the absolute spectrum acquisition module 3.

In this embodiment, the display screen 51 is installed outside the housing 5, the display screen 51 is electrically connected to the light sensing control module 10, and the calibration optical image 41 of the light sensing control module 10 can be displayed in real time according to the influence data transmitted by the light sensing control module 10, so that the operator can observe the calibration optical image 41 corresponding to the second optical path.

In a test scene of practical application, for example, when a specified test position on an LED screen is tested, the tested object is the test position on the LED screen, so that light of the LED screen enters the light incident component 1 to form an incident light path, the incident light path is divided into a first light path and a second light path, the second light path is transmitted to the image sensor 4 to obtain a corresponding calibration optical image 41, and whether the deviation of the light of the first light path from the position in the detection picture 31 to the acquisition area 32 in the same state is within an allowable deviation range is determined according to the relative position of the light of the second light path in the optical image, if so, it is determined that the light emitted by the tested object can reach the acquisition area 32 in the first light path, and data acquisition can be directly performed on the first light path through the absolute spectrum acquisition module 3 to obtain absolute spectrum information of the tested object.

If not, the relative position between the optical component 1 and the object to be measured may be adjusted until the relative position of the light emitted by the object to be measured in the optical image is within the specified area range, so that the deviation amount from the position of the light of the first optical path in the detection screen 31 to the collection area 32 is within the allowable deviation range in the same state, and then step S106 is executed.

S106, the absolute spectrum acquisition module 3 acquires data of the light rays in the acquisition area 32 in the detection picture 31 to obtain absolute spectrum information of the object to be detected.

And the absolute spectrum acquisition module 3 acquires data of the first light path to obtain absolute spectrum information of the measured object.

Referring to fig. 1 and 2, in a specific embodiment, the absolute spectrum acquisition method further includes the steps of:

s201, acquiring an aperture adjusting instruction, and controlling a first adjusting power source to work based on the aperture adjusting instruction.

The aperture adjustment instruction is used for controlling the first adjustment power source to work, so that the aperture adjustment sheet 63 rotates to a specified angle, and light entering the absolute spectrum collection module 3 is limited in a specified light area size range and an imaging range.

S202, obtaining an attenuation adjusting instruction, and controlling a second adjusting power source to work based on the attenuation adjusting instruction.

The attenuation adjustment instruction is used for controlling the second adjustment power source to work, so that the attenuation sheet 61 rotates to a specified angle, and light rays entering the absolute spectrum acquisition module 3 are limited to a specified attenuation degree.

In a specific embodiment, the absolute spectrum acquisition method further comprises the following steps:

s302, a shutter switching instruction is obtained, and the dark buckle 14 is controlled to switch the switch mode based on the shutter switching instruction.

The shutter switching instruction controls a built-in shutter closing switch of the dark bottom buckle 14 to open/close the dark bottom buckle 14, when the shutter of the dark bottom buckle 14 is closed, light transmission between the light transmitter 13 and the spectrum connecting part 15 can be blocked, and at the moment, the absolute spectrum acquisition module 3 can acquire and obtain data of the equipment under the condition of no light; when the shutter of the dark buckle 14 is opened, the light of the light transmitter 13 can be transmitted to the spectrum connecting part 15, and the absolute spectrum collecting module 3 can collect the absolute spectrum information of the measured object.

In this embodiment, the display screen 51 mounted on the housing is a touch screen, and an operator can click a software interface on the touch screen to send a control command, thereby outputting an aperture adjustment command, an attenuation adjustment command, or a shutter switching command.

Corresponding to the methods of the above steps S201, S202, and S301, the absolute spectrum acquisition system further includes an aperture control module, an attenuation control module, and a shutter switching module. The functional modules are explained in detail as follows:

and the aperture control module is used for acquiring an aperture adjusting instruction and controlling the first adjusting power source to work based on the aperture adjusting instruction.

The attenuation control module is used for acquiring an attenuation adjusting instruction and controlling the second adjusting power source to work based on the attenuation adjusting instruction

And the shutter switching module is used for acquiring a shutter switching instruction and controlling the dark buckle 14 to switch the switch mode based on the shutter switching instruction.

Referring to fig. 7, in the absolute spectrum acquiring system provided in the first embodiment, the absolute spectrum acquiring system further includes a control device, the control device includes a memory, a processor, and a computer program stored in the memory and operable on the processor, and when the processor executes the computer program, the steps S105, S201, S202, and S301 in the absolute spectrum acquiring method according to the first embodiment are implemented. Alternatively, the processor executes the computer program to realize the functions of the light sensing control module 10, the aperture control module, the attenuation control module, and the shutter switching module in the above embodiments.

The method steps of the absolute spectrum collection method provided in this embodiment are implemented based on the components of the absolute spectrum collection system in the first embodiment, and can achieve the same technical effects as the absolute spectrum collection system in the first embodiment, and the principle analysis can refer to the related description, which will not be repeated herein.

Example two:

referring to fig. 8 and 9, the absolute spectrum collection method according to the embodiment of the present application is different from the absolute spectrum collection method according to the first embodiment in that after step S104 and before step S106, that is, after obtaining the calibration optical image 41 based on the sensing signal of the image sensor 4, and before the absolute spectrum collection module 3 performs data collection on the light of the collection area 32 located in the detection screen 31 to obtain the absolute spectrum information of the measured object, the method further includes the following steps:

s401, acquiring the target position 42.

The target position 42 is used to reflect the relative position of the measured object in the calibration optical image 41 in real time.

In this embodiment, the system can mark the position of the measured object in the calibration optical image 41 by using an image recognition algorithm with deep learning to obtain the target position 42. In some embodiments, the operator may also manually mark the position of the measured object in the calibration optical image 41 to obtain the target position 42.

When the light incident component 1 and the object to be measured move relatively, the position of the light emitted from the object to be measured relative to the light incident component 1 changes, which causes the composition of the light incident on the light path to change, and the target position 42 also moves in real time.

S402, determining the calibration area 43.

The calibration area 43 is used to reflect the relative position of the acquisition area 32 in the detection screen 31. The calibration area 43 may be set based on empirical values or based on equipment parameters of the absolute spectrum acquisition module 3.

S403, determine whether the target position 42 is deviated from the calibration area 43, and output offset adjustment information based on the deviation amount of the target position 42 from the calibration area 43 according to the determination result.

The specific method for determining whether the target position 42 deviates from the calibration area 43 includes: the target position 42 and the calibration area 43 are projected on the same coordinate system, the distance between the target position 42 and the calibration area 43 is calculated, and then whether the distance is within the allowable deviation range is determined.

The calculation mode of the distance may be a distance between center points of the two, or a minimum distance between edges of the two, and the like, and specifically may be set according to an actual application scenario, and the deviation range may also be set according to the actual application scenario.

If the distance between the target position 42 and the calibration region 43 is within the deviation range, the target position 42 is not deviated from the calibration region 43, which indicates that in this state, the light emitted from the object to be measured can reach the collecting region 32 in the first light path, and step S106 can be directly executed.

If the distance between the target position 42 and the calibration area 43 exceeds the deviation range, the target position 42 deviates from the calibration area 43, which indicates that the light emitted from the object to be measured cannot reach the collecting area 32 in the first optical path in this state, and at this time, the deviation adjustment information is output according to the deviation amount between the target position 42 and the calibration area 43.

The offset adjustment information includes a deviation direction between the target position 42 and the calibration area 43, and a deviation distance of the target position 42 from the calibration area 43 in the deviation direction. The target position 42 is moved by a specified offset distance in the offset direction and can be moved into the calibration area 43.

And S404, driving the optical assembly 1 to move based on the offset adjustment information.

Referring to fig. 10, the moving calibration module 50 drives the optical subassembly 1 to move to a specified position based on the offset direction and the offset distance in the offset adjustment information.

In the present embodiment, the mobile calibration module 50 is a multi-axis robot, and the housing 5 is fixedly connected to a movable end of the multi-axis robot.

Referring to fig. 10 and 11, the absolute spectrum acquisition system according to the embodiment of the present application is different from the absolute spectrum acquisition system according to the first embodiment in that the absolute spectrum acquisition system further includes: target location module 20, initial calibration module 30, deviation calculation module 40, movement calibration module 50. The functional modules are explained in detail as follows:

and a target location module 20 for obtaining a target location 42. The target position 42 is used to reflect the relative position of the measured object in the calibration optical image 41.

An initial calibration module 30 for determining a calibration area 43. The calibration area 43 is used to reflect the relative position of the acquisition area 32 in the detection screen 31.

And the deviation calculation module 40 is used for judging whether the target position 42 deviates from the calibration area 43 or not, and outputting deviation adjustment information based on the deviation amount of the target position 42 to the calibration area 43 according to the judgment result.

And a movement calibration module 50 for driving the optical subassembly 1 to move based on the offset adjustment information.

In the absolute spectrum collecting system provided in the second embodiment, the processor of the control device, when executing the computer program, further implements steps S401 to S403 in the absolute spectrum collecting method according to the first embodiment. Alternatively, the processor, when executing the computer program, also implements the functions of the target location module 20, the initial calibration module 30, and the deviation calculation module 40 in the above embodiments.

Example three:

the difference between the absolute spectrum collection system of the embodiment of the present application and the absolute spectrum collection system of the first embodiment is that the absolute spectrum collection system cancels the setting of dividing the incident light path into a plurality of light paths, and instead sets the incident light path to be capable of being emitted to different devices.

Referring to fig. 12, the absolute spectrum collection system includes a light incident module 1, a movable block 7, an absolute spectrum collection module 3, and a housing 5.

Referring to fig. 12 and 13, the light incident module 1 is fixed to the housing 5, and the light incident module 1 allows light emitted from the object to be measured to enter the interior of the housing 5. The light inlet component 1 is provided with an optical channel, and light rays emitted by a measured object enter the optical channel to form the incident light path for propagation. The tail end of the optical channel is provided with a function switching position 17, and the incident light path can be switched into a first light path or a second light path after passing through the function switching position 17.

The movable block 7 is movably arranged on the light inlet component 1, and the movable block 7 can pass through the function switching position 17 when rotating.

The movable block 7 can be provided with a spectrum connecting portion 15 through the region of the function switching bit 17, and the spectrum connecting portion 15 is connected to the absolute spectrum collection module 3. When the movable block 7 drives the spectrum connecting part 15 to move to the function switching position 17,

the incident light path passes through the functional switching position 17 and then is switched to a first light path transmitted to the spectrum connecting portion 15, so that the light passing through the functional switching position 17 is transmitted to the absolute spectrum acquisition module 3 along the first light path.

The movable block 7 is also provided with an image sensor connecting portion 16 through a region of the function switching bit 17, and the image sensor connecting portion 16 is connected to the image sensor 4. When the movable block 7 drives the image sensor connecting portion 16 to move to the function switching position 17, the incident light path passes through the function switching position 17 and then is switched to a second light path which is transmitted to the image sensor connecting portion 16, so that the light ray passing through the function switching position 17 is transmitted to the image sensor 4 along the second light path.

Referring to fig. 14 and 15, the absolute spectrum acquisition module 3 is configured to perform data acquisition on light rays of the acquisition area 32 located in the detection frame 31 thereof, so as to obtain absolute spectrum information of the measured object. The acquisition area 32 is preset in the detection picture 31, and when the light of the object to be detected falls on the acquisition area 32 of the detection picture 31, the calculation error of the absolute spectrum acquisition module 3 for acquiring the data of the object to be detected is within the allowable error range.

The image sensor 4 is electrically connected to the photosensitive control module 10, and after receiving the sensing signal of the image sensor 4, the photosensitive control module 10 obtains the calibration optical image 41 based on the sensing signal.

In this embodiment, the first optical path and the second optical path are both the same as the incident optical path, and therefore, the relative position of the light of the second optical path in the calibration optical image 41 can reflect the relative position of the light of the first optical path in the detection frame 31 of the absolute spectrum collection module 3. The content of the light of the first light path entering the absolute spectrum acquisition module 3 can be reflected by an optical image displayed by the image sensor 4 based on the light of the second light path. Because the first light path and the second light path are consistent relative to the incident light path, the condition that the light of the first light path approaches the middle light of the incident light path and the light of the second light path approaches the edge light of the incident light path does not occur, and the optical error is reduced.

In a test scenario of practical application, for example, when a specified test position on an LED screen is tested for brightness uniformity, the tested object is the test position on the LED screen, so that light of the LED screen enters the light incident component 1 to form an incident light path, the image sensor connecting part 16 is moved to the function switching position 17 through the movable block 7, so that the light propagates to the image sensor 4 along the second light path to obtain a corresponding calibration optical image 41, and whether the deviation amount from the position of the light of the first light path in the detection frame 31 to the collection area 32 is within an allowable deviation range is determined through the relative position of the light of the second light path in the optical image in the same state.

If the absolute spectrum information of the object to be measured is obtained, it indicates that the light in the first light path can reach the collection area 32, and the spectrum connection part 15 can be moved to the function switching position 17 through the movable block 7, so that the light is transmitted to the absolute spectrum collection module 3 along the first light path, and the absolute spectrum collection module 3 performs data collection on the first light path to obtain the absolute spectrum information of the object to be measured.

If not, the relative position between the optical component 1 and the object to be measured can be adjusted until the relative position of the light ray of the second optical path in the optical image is within the specified area range, so that whether the deviation amount from the position of the light ray of the first optical path in the detection picture 31 to the acquisition area 32 is within the allowable deviation range in the same state is determined, and then the spectrum connecting part 15 is moved to the function switching position 17 through the moving block 7, so that the light ray is transmitted to the absolute spectrum acquisition module 3 along the first optical path, and the absolute spectrum information of the object to be measured is obtained.

It can be understood that in the second technical solution of the embodiment of the present application, the incident light path is transmitted to different terminals, the incident angle of the incident light path is not changed, and the light itself is also not changed, so that the light emitted from the same position can be transmitted to the image sensor 4 and the absolute spectrum collection module 3 respectively. The optical imaging of the second optical path in the image sensor 4 can be used for determining whether the light of the measured object can be accurately incident into the absolute spectrum acquisition module 3 through the first optical path, so that the absolute spectrum acquisition module 3 can accurately acquire data of the measured object, and the measurement error is reduced.

In the same way, compare the technical scheme in the background art, this application technical scheme has cancelled the setting of eyepiece (close-up lens) on the one hand, replaced the adjustment of people's eye direct observation eyepiece, reduce the error of people's eye vision, light vertical incidence absolute spectrum collection module simultaneously, thereby measurement accuracy when having improved absolute spectrum collection, and, first light path and second light path are equivalent to incident light path and have the uniformity, consequently, the content of absolute spectrum collection module 3 can be accomplished to the optical image among the image sensor 4 more accurately.

Referring to fig. 16, for a detailed description of the structure of the light incident assembly 1, in the present embodiment, the light incident assembly 1 includes a light incident frame 11, a light incident lens 12 and a light transmitter 13, wherein the light incident lens 12 is embedded and fixed on the housing 5, and one end of the light incident lens 12 is exposed outside the housing 5 to obtain light. The central axis direction of the entrance lens 12 is arranged in the horizontal direction.

The optical bracket is fixedly installed in the housing 5 (see fig. 12), an accommodating hole is formed in one end of the light incident bracket 11 facing the light incident lens 12, the shape and contour of the inside of the accommodating hole are matched with the shape and contour of the light emitting end of the light incident lens 12, and the light emitting end of the light incident lens 12 is accommodated in the accommodating hole.

The light transmitter 13 is integrally in a shape of a circular tube, an optical channel is formed inside the light transmitter 13, and one end of the light transmitter 13 is fixedly connected to the light incident bracket 11. The optical channel is communicated with the accommodating hole, and the central axis of the light-entering lens 12 is collinear with the central axis of the optical channel, so that light rays entering the light-entering lens 12 from the outside of the shell 5 can enter the optical channel.

In this embodiment, the end of the light transmitter 13 away from the light incident frame 11 is the end of the optical channel, and the space in front of the end face is formed with a function switching bit 17. The light enters and passes through the optical channel to form an incident light path, and the incident light path propagates along the central axis direction of the optical channel and passes through the function switching bit 17.

In the present embodiment, the movable block 7 is rotatably provided to the light incident module 1, specifically describing the operation mode of the movable block 7. The movable block 7 is located on one side of the function switching position 17, and the movable block 7 can make itself pass through the function switching position 17 in a rotating manner. In some possible embodiments, the movable block 7 may also be slidably disposed on the light incident module 1, so that the movable block 7 may pass through the function switching position 17 by sliding.

Referring to fig. 16 and 17, in the present embodiment, the spectrum connecting portion 15 and the image sensor connecting portion 16 are not only respectively and fixedly disposed at different positions on the movable block 7, but also are circumferentially distributed around the rotation axis of the movable block 7 at intervals, so that the movable block 7 drives the spectrum connecting portion 15 and the image sensor connecting portion 16 to move synchronously, and both the moving track of the spectrum connecting portion 15 and the moving track of the image sensor connecting portion 16 can pass through the function switching position 17.

Regarding the specific description of the arrangement manner between the spectrum connection portion 15 and the absolute spectrum collection module 3, in this embodiment, the central axis of the collection input end of the absolute spectrum collection module 3 is parallel or collinear with the central axis of the light transmitter 13, and a spatial distance for the movable block 7 and related components thereof to move is left between the collection input end of the spectrum collection module and the light transmitter 13. The spectrum connecting part 15 is a through hole structure arranged on the movable block 7, and the light transmission is realized between the spectrum connecting part 15 and the acquisition input end by adopting a fiber connector.

The end of the fiber optic connector near the collection input has a flexible portion that flexes as the spectral connection 15 moves. When the spectrum connecting portion 15 moves to the function switching position 17, light in the optical channel can enter the optical fiber connector through the spectrum connecting portion 15 and then be transmitted to the absolute spectrum acquisition module 3, so that the light transmission process is more stable, and the risk that the light is still transmitted to the absolute spectrum acquisition module 3 by the spectrum connecting portion 15 under the condition of being far away from the function switching position 17 is prevented.

In the present embodiment, the image sensor connecting portion 16 is a through hole structure opened in the movable block 7, and the central axis of the image sensor connecting portion 16 is parallel to the rotation axis of the movable block 7. In the present embodiment, when the image sensor connecting portion 16 is located at the function switching position 17 and aligned with the light transmitter 13, the central axis of the image sensor connecting portion 16 is collinear with the central axis of the optical channel.

The image sensor 4 is fixedly soldered to the control circuit board, and the control circuit board is fixedly mounted on an end of the image sensor connecting portion 16 away from the light transmitter 13, and shields the image sensor connecting portion 16 on the end surface. Under the supporting action of the control circuit board, the image sensor 4 is fixedly located in the image sensor connecting portion 16, and the light sensing surface of the image sensor 4 passes through the central axis of the image sensor connecting portion 16, in this embodiment, the central point of the light sensing surface of the image sensor 4 passes through the central axis of the image sensor connecting portion 16.

Referring to fig. 17 and 18, as to a specific description of the driving manner of the movable block 7, in the present embodiment, the absolute spectrum acquisition system further includes a driving assembly 8, and the driving assembly 8 is a motor driving structure. The driving component 8 comprises a first driving motor, a machine body of the first driving motor is fixed in the shell 5, an output shaft of the first driving motor is connected with the movable block 7 through a rotating hole, and a hinged shaft for realizing rotating connection between the movable block 7 and the shell 5 is formed. The first driving motor operates in a manner of receiving an electrical signal from a control module of the system of the apparatus, and drives the movable block 7 to rotate in a designated direction according to the electrical signal, so that the spectrum connection portion 15 or the image sensor connection portion 16 moves to the function switching position 17.

In some possible embodiments, the driving assembly 8 may also adopt an electric control assembly such as an electromagnet assembly, an electrode gear and rack cooperation driving assembly 8, a lead screw motor driving assembly 8, and the like, and may be specifically set according to a motion mode (rotation or slippage) of the sliding block, as long as a function of driving the movable block 7 to move to a specified position under the control of an electric signal is achieved.

In order to detect whether the spectrum connection portion 15 or the image sensor connection portion 16 accurately reaches the function switching position 17, in a specific embodiment, the driving assembly 8 is electrically connected with contact switches, the number and the positions of the contact switches are set according to the moving range of the movable block 7, and the contact switches detect whether the movable block 7 rotates to reach the corresponding position by feeding back an electrical signal after being in mechanical contact with the movable block 7. In one embodiment, the first drive motor may alternatively be an encoder motor having an encoder. The magnetic coding motor has the advantage that the rotation quantity of the output shaft is controllable, so that the first driving motor can accurately control the rotation angle of the output shaft, and the movable block 7 can stably rotate to reach the corresponding position.

In this embodiment, an absolute spectrum collecting method is provided, where the absolute spectrum collecting method corresponds to each functional component in the absolute spectrum collecting system in the above embodiments, such as the optical component 1, the movable block 7, the spectrum connecting portion 15, the absolute spectrum collecting module 3, the image sensor connecting portion 16, the image sensor 4, and the driving component 8.

The absolute spectrum acquisition method comprises the following steps:

referring to fig. 19 and 20, S501, light incident on the optical path in the optical channel is acquired.

The light-entering component 1 is provided with an optical channel, light emitted by a measured object enters the optical channel to form an incident light path, the tail end of the optical channel is provided with a function switching position 17, and the incident light path can be switched into a first light path or a second light path after passing through the function switching position 17.

And S502, transmitting the light passing through the function switching position 17 to the image sensor 4 along a second light path.

Referring to fig. 17 and 20, the driving assembly 8 drives the movable block 7 to move, and the movable block 7 drives the image sensor connecting portion 16 to move to the function switching position 17, so that the incident light path passes through the function switching position 17 and then is switched to the second light path, so that the light passing through the function switching position 17 propagates to the image sensor 4 along the second light path.

When the light is transmitted to the image sensor 4, the light falls on the photosensitive surface of the image sensor 4, and the image sensor 4 converts the light image on the photosensitive surface into an electrical signal in a corresponding proportional relationship with the light image by using a photoelectric conversion function, thereby outputting a sensing signal based on the received light of the second optical path.

Specifically, the driving assembly 8 drives the movable block 7 to move to a specified position based on the received sensing transmission instruction, so that the image sensor connecting part 16 moves to the function switching position 17. The output of the function switching instruction may be output by an operator operating a touch screen of a control terminal or a system communicating with the system.

S503, based on the sensing signal of the image sensor 4, a calibration optical image 41 is obtained.

The light sensing control module 10 obtains the calibration optical image 41 based on the sensing signal of the image sensor 4. The position of the light of the second optical path in the calibration optical image 41 can reflect the position of the light of the first optical path in the detection frame 31 of the absolute spectrum acquisition module 3.

In this embodiment, the display screen 51 displays the calibration optical image 41 of the light sensing control module 10 in real time, so that the operator can observe the calibration optical image 41 corresponding to the second optical path.

In a practical test scenario, for example, when a specified test position on the LED screen is tested for brightness uniformity, the tested object is the test position on the LED screen, so that the light of the LED screen can be transmitted to the image sensor 4 according to the second light path to obtain the corresponding calibration optical image 41, and through the relative position of the light of the second light path in the optical image, it is determined whether the deviation amount from the position of the light of the first light path in the detection frame 31 to the collection area 32 in the same state is within an allowable deviation range, and if yes, it is determined that the light emitted by the tested object can reach the collection area 32 in the first light path, and step S504 can be executed.

If not, the relative position between the optical component 1 and the object to be measured may be adjusted until the relative position of the light beam emitted by the object to be measured in the optical image is within the specified area range, so that the deviation amount from the position of the light beam of the first optical path in the detection screen 31 to the collection area 32 in the same state is within the allowable deviation range, and then step S504 is performed.

And S504, transmitting the light rays passing through the function switching position 17 to the absolute spectrum acquisition module 3 along a first light path.

The driving component 8 drives the movable block 7 to move, the movable block 7 drives the spectrum connecting part 15 to move to the function switching position 17, so that the incident light path is switched into a first light path after passing through the function switching position 17, and light rays passing through the function switching position 17 are transmitted to the absolute spectrum acquisition module 3 along the first light path. The absolute spectrum acquisition module 3 acquires data of the first light path to obtain absolute spectrum information of the measured object.

Specifically, the driving assembly 8 drives the movable block 7 to move to a specified position based on the received spectrum transmission instruction, so that the spectrum connecting portion 15 moves to the function switching position 17. The output of the function switching instruction may be output by an operator operating a touch screen of a control terminal or a system communicating with the system.

Referring to fig. 20 and 21, corresponding to the methods of step S502, step S503 and step S504, the absolute spectrum collection system further includes a light sensing control module 10, a light sensing switching module 60 and a spectrum switching module 70. The functional modules are explained in detail as follows:

the light sensing control module 10 is configured to obtain a calibration optical image 41 based on a sensing signal of the image sensor 4.

And the sensing switching module 60 is configured to output a sensing transmission instruction to the driving assembly 8, so that the driving assembly 8 drives the movable block 7 to move to a specified position, and thus the image sensor connecting part 16 moves to the function switching position 17.

The spectrum switching module 70 is configured to output a spectrum transmission instruction to the driving assembly 8, so that the driving assembly 8 drives the movable block 7 to move to a specified position, and thus the spectrum connecting portion 15 moves to the function switching position 17.

In the absolute spectrum collection system provided in the third embodiment, the absolute spectrum collection system further includes a control device, the control device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the steps S502, S503, and S504 in the absolute spectrum collection method according to the third embodiment are implemented. Alternatively, the processor executes the computer program to realize the functions of the photosensitive control module 10, the sensing switching module 60, and the spectrum switching module 70 in the above embodiments.

In the absolute spectrum collection method provided in this embodiment, the method steps are implemented based on the components of the absolute spectrum collection system in the third embodiment, and the same technical effects as those of the absolute spectrum collection system in the third embodiment can be achieved.

Example four:

referring to fig. 20 and fig. 22, the absolute spectrum collection method according to the embodiment of the present application is different from the absolute spectrum collection method according to the first embodiment in that after step S503 and before step S504, that is, after obtaining the calibration optical image 41 based on the sensing signal of the image sensor 4, and before making the light passing through the function switching point 17 propagate to the absolute spectrum collection module 3 along the first optical path, the method further includes the following steps:

and S601, acquiring the target position 42.

And S602, determining the calibration area 43.

The calibration area 43 is used to reflect the relative position of the acquisition area 32 in the detection screen 31.

S603, determine whether the target position 42 deviates from the calibration area 43, and output offset adjustment information based on the offset amount from the target position 42 to the calibration area 43 according to the determination result.

The specific method for determining whether the target position 42 deviates from the calibration area 43 includes: the target position 42 and the calibration area 43 are projected in the same coordinate system, the distance between the target position 42 and the calibration area 43 is calculated, and then whether the distance is within the allowable deviation range is determined.

If the distance between the target position 42 and the calibration area 43 is within the deviation range, the target position 42 is not deviated from the calibration area 43, which indicates that in this state, the light emitted from the object to be measured can reach the collecting area 32 by switching to the first optical path, and step S106 can be directly executed.

If the distance between the target position 42 and the calibration area 43 exceeds the deviation range, the target position 42 deviates from the calibration area 43, which indicates that in this state, the light emitted by the object to be measured cannot reach the collecting area 32 when being switched to the first light path, and at this time, the deviation adjusting information is output according to the deviation amount between the target position 42 and the calibration area 43.

S604, based on the offset adjustment information, the optical subassembly 1 is driven to move.

Referring to fig. 23, the moving calibration module 50 drives the optical subassembly 1 to move to a designated position based on the offset direction and the offset distance in the offset adjustment information.

Referring to fig. 23 and 24, in the present embodiment, the movement calibration module 50 employs a multi-axis robot, and the housing 5 is fixedly connected to a movable end of the multi-axis robot.

The difference between the absolute spectrum collection system of the embodiment of the present application and the absolute spectrum collection system of the first embodiment is that the absolute spectrum collection system further includes: target positioning module 20, initial calibration module 30, and mobile calibration module 50. The functional modules are explained in detail as follows:

In the absolute spectrum collection system provided in the fourth embodiment, the processor of the control device, when executing the computer program, further implements steps S601 to S603 in the absolute spectrum collection method according to the first embodiment. Alternatively, the processor, when executing the computer program, also implements the functions of the target location module 20, the initial calibration module 30, and the deviation calculation module 40 in the above embodiments.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A method of absolute spectral acquisition, comprising:

obtaining light rays of an incident light path in an optical channel, wherein the light rays emitted by a measured object enter the optical channel to form the incident light path;

splitting an incident light path into a first light path and a second light path;

transmitting the light of the first light path to an absolute spectrum acquisition module (3);

propagating the light of the second optical path to an image sensor (4);

obtaining a calibration optical image (41) based on a sensing signal of the image sensor (4), wherein the position of the light ray of the second optical path in the calibration optical image (41) can reflect the position of the light ray of the first optical path in a detection picture (31) of an absolute spectrum acquisition module (3);

and the absolute spectrum acquisition module (3) acquires data of light rays in an acquisition area (32) in the detection picture (31) to obtain absolute spectrum information of the measured object.

2. The absolute spectrum collection method according to claim 1, wherein before the step of acquiring data by the absolute spectrum collection module (3) for light rays of a collection area (32) located in the detection frame (31) to obtain absolute spectrum information of the measured object, the method further comprises:

acquiring a target position (42), wherein the target position (42) is used for reflecting the relative position of the measured object in the calibration optical image (41);

determining a calibration area (43), wherein the calibration area (43) is used to reflect the relative position of the acquisition area (32) in the detection screen (31);

and judging whether the target position (42) deviates from the calibration area (43), and outputting offset adjustment information based on the offset of the target position (42) to the calibration area (43) according to the judgment result.

3. The absolute spectrum acquisition method of claim 2, further comprising: the mobile calibration module (50) drives the light inlet component (1) to move based on the offset adjustment information so as to enable the target position (42) to move towards the calibration area (43).

4. An absolute spectrum acquisition system, comprising:

the light-incident component (1) is provided with an optical channel, and light rays emitted by a measured object enter the optical channel to form the incident light path;

a light splitting member (2) passing through the incident light path for splitting the incident light path into a first light path and a second light path;

the spectrum connecting part (15) is arranged on the first light path and is used for transmitting the light of the first light path to the absolute spectrum acquisition module (3);

the image sensor connecting part (16) is arranged on the second light path and is used for transmitting the light of the second light path to the image sensor (4);

the light sensing control module (10) is used for obtaining a calibration optical image (41) based on a sensing signal of the image sensor (4), wherein the position of the light ray of the second optical path in the calibration optical image (41) can reflect the position of the light ray of the first optical path in a detection picture (31) of the absolute spectrum acquisition module (3);

the absolute spectrum acquisition module (3) is used for acquiring data of light rays in an acquisition area (32) in the detection picture (31) to obtain absolute spectrum information of the measured object.

5. The absolute spectrum acquisition system of claim 4, wherein:

a target positioning module (20) for acquiring a target position (42), wherein the target position (42) is used for reflecting the relative position of the measured object in the calibration optical image (41);

an initial calibration module (30) for determining a calibration area (43), wherein the calibration area (43) is used for reflecting the relative position of the acquisition area (32) in the detection frame (31);

and the deviation calculation module (40) is used for judging whether the target position (42) deviates from the calibration area (43) or not, and outputting deviation adjustment information based on the deviation amount of the target position (42) to the calibration area (43) according to the judgment result.

6. A method of absolute spectral acquisition, comprising:

the method comprises the steps that light rays of an incident light path in an optical channel are obtained, wherein the light rays emitted by a measured object enter the optical channel to form the incident light path, a function switching position (17) is arranged at the tail end of the optical channel, and the incident light path can be switched into a first light path or a second light path after passing through the function switching position (17);

propagating the light passing through the function switching position (17) to an image sensor (4) along the second optical path;

obtaining a calibration optical image (41) based on the sensing signal of the image sensor (4);

enabling the light rays passing through the function switching position (17) to propagate to an absolute spectrum acquisition module (3) along the first optical path;

the position of the light ray of the second optical path in the calibration optical image (41) can reflect the position of the light ray of the first optical path in a detection picture (31) of an absolute spectrum acquisition module (3);

7. The absolute spectrum acquisition system according to claim 6, further comprising, before the step of propagating the light passing through the function switching bit (17) to the absolute spectrum acquisition module (3) along the first optical path:

determining a calibration area (43), wherein the calibration area (43) is used for reflecting the relative position of the acquisition area (32) in the detection picture (31);

judging whether the target position (42) deviates from the calibration area (43), and outputting offset adjustment information based on the offset of the target position (42) to the calibration area (43) according to the judgment result;

optionally, the method further includes: the mobile calibration module (50) drives the light inlet component (1) to move based on the offset adjustment information so as to enable the target position (42) to move towards the calibration area (43).

8. The absolute spectrum acquisition system of claim 6, wherein: a spectrum connecting part (15), an image sensor connecting part (16) and a movable block (7) are arranged at the function switching position (17), wherein the spectrum connecting part (15) corresponds to the first light path, the image sensor connecting part (16) corresponds to the second light path, and the movable block (7) is used for driving the spectrum connecting part (15) or the image sensor connecting part (16) to move to the function switching position (17);

the step of making the light passing through the function switching position (17) propagate to the image sensor (4) along the second optical path comprises:

the movable block (7) drives the image sensor connecting part (16) to move to the function switching position (17), so that the incident light path is switched to the second light path after passing through the function switching position (17), and light rays passing through the function switching position (17) are transmitted to the image sensor (4) along the second light path;

the step of transmitting the light passing through the function switching position (17) to the absolute spectrum acquisition module (3) along the first optical path comprises:

the movable block (7) drives the spectrum connecting part (15) to move to the function switching position (17), so that the incident light path is switched into the first light path after passing through the function switching position (17), and light rays passing through the function switching position (17) are transmitted to the absolute spectrum acquisition module (3) along the first light path.

9. An absolute spectrum acquisition system, comprising:

the optical module comprises an optical component (1) and a light source, wherein the optical component is provided with an optical channel and is used for obtaining light of the optical channel, the light emitted by a measured object enters the optical channel to form an incident light path, the tail end of the optical channel is provided with a function switching position (17), and the incident light path can be switched into a first light path or a second light path after passing through the function switching position (17);

the movable block (7) is movably arranged on the light inlet component (1);

the image sensor connecting part (16) is arranged in the region of the movable block (7) capable of passing through the function switching position (17) and is used for switching the incident light path into the second light path after passing through the function switching position (17) so as to enable the light passing through the function switching position (17) to be transmitted to the image sensor (4) along the second light path;

the light sensing control module (10) is used for obtaining a calibration optical image (41) based on a sensing signal of the image sensor (4);

the spectrum connecting part (15) is arranged in a region where the movable block (7) can pass through the function switching position (17), and is used for switching the incident light path into the first light path after passing through the function switching position (17), so that light passing through the function switching position (17) is transmitted to the absolute spectrum acquisition module (3) along the first light path;

the spectrum connecting part (15) is arranged in a region where the movable block (7) can pass through the function switching position (17), so that light rays passing through the function switching position (17) are transmitted to the absolute spectrum acquisition module (3);

the absolute spectrum acquisition module (3) is used for acquiring data of light rays of an acquisition area (32) in the detection picture (31) to obtain absolute spectrum information of the detected object.

10. The absolute spectral acquisition system of claim 9, further comprising:

a deviation calculation module (40) for judging whether the target position (42) deviates from the calibration area (43), and outputting deviation adjustment information based on the deviation amount of the target position (42) to the calibration area (43) according to the judgment result;