CN217953674U - Absolute spectrum acquisition system - Google Patents

Abstract

The present application relates to the field of spectrum collection technology, and in particular, to an absolute spectrum collection system, which includes: the light inlet component is provided with an incident light path; a light splitting member passing through the incident light path; the spectrum connecting part is arranged on the first light path; and an image sensor connecting part arranged on the second light path. After light enters an incident light path of the light inlet component, the light passes through the light splitting component and is divided into a first light path and a second light path under the action of the light splitting component to be transmitted, the light transmitted along the first light path can be transmitted to the absolute spectrum acquisition module through the spectrum connecting part, and the light transmitted along the second light path can be transmitted to the image sensing component through the image sensor connecting part. In practical application, the position of the measured object in an optical image of the image sensing assembly can be observed through the image sensing assembly, and then the measured object is located at a specified position through position adjustment, so that the visual error of human eyes is reduced, and the measurement precision during absolute spectrum acquisition is improved.

Description

Absolute spectrum acquisition system

The priority basis includes: application No. 2022110205286, entitled "Absolute Spectrum acquisition method and System", an invention application having an application date of 2022, 08 months and 24 days.

Technical Field

The application relates to the field of spectrum acquisition technology, in particular to an absolute spectrum acquisition 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 measured object is firstly incident into the absolute spectrum collecting system from the collecting lens, then middle light in the incident light is incident into the photodiode array, and edge light in the incident light is 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

In order to reduce the measurement error of the absolute spectrum, the application provides an absolute spectrum acquisition system.

The application provides an absolute spectrum collection system adopts following technical scheme:

an absolute spectrum acquisition system comprising:

the light inlet component is provided with an 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;

and 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 sensing component.

By adopting the technical scheme, after light enters the incident light path of the light inlet component, the light passes through the light splitting component and is split into the first light path and the second light path under the action of the light splitting component to be transmitted, the light transmitted along the first light path can be transmitted to the absolute spectrum acquisition module through the spectrum connecting part, and the light transmitted along the second light path can be transmitted to the image sensing component through the image sensor connecting part.

By dividing the incident light path into the first light path and the second light path and transmitting the first light path and the second light path to the absolute spectrum acquisition module and the image sensing assembly respectively, light rays emitted from the same position and passing through the function switching position can be respectively transmitted into the image sensing assembly and the absolute spectrum acquisition module. When the measured object is measured, the position of the measured object in the optical image of the image sensing component can be observed through the image sensing component, and then the measured object is located at the specified position through position adjustment. The setting of the ocular is cancelled, the adjustment of a human eye direct observation ocular is replaced, the error of human eye vision is reduced, and meanwhile, the light is vertically incident to the absolute spectrum acquisition module, so that the measurement precision during absolute spectrum acquisition is improved.

Optionally, the light entrance assembly includes a light entrance lens and a light entrance bracket, the light entrance bracket is provided with a light splitting hole for the light splitting component to accommodate, and the light splitting hole is aligned with the light entrance lens.

By adopting the technical scheme, the light splitting piece is accommodated and fixed in the light splitting hole, and the light splitting hole is aligned to the light incidence lens, so that light rays entering the light incidence lens can be transmitted to the light splitting piece.

Optionally, a light splitting support for fixing the light splitting element is disposed in the light splitting hole, the light splitting support and the light incident support can slide relative to each other, and the sliding direction is parallel to the incident light path.

By adopting the technical scheme, the position of the light splitting bracket in the light incidence bracket can be adjusted, so that the position of the light splitting piece is adjusted, the position of the second light path is adjusted, and the second light path can be aligned to the image sensing component.

Optionally, a light splitting support for fixing the light splitting element is disposed in the light splitting hole, the light splitting support and the light incident support can rotate relatively, and a rotation axis is parallel to the incident light path.

By adopting the technical scheme, the position of the second light path can be adjusted by rotating the light splitting piece, so that the second light path can be aligned to the image sensing component.

Optionally, the light incident support is provided with a connection hole communicated with the light splitting hole, and the connection hole is aligned with the image sensing assembly to form the image sensor connection portion.

Through adopting above-mentioned technical scheme, the space in connecting hole intercommunication beam split hole for the light of beam split spare can get into the connecting hole and propagate to image sensing subassembly according to the second light path, goes into the formation of light support itself and can shelter from external light and get into in the connecting hole, thereby reduces the interference of other light to image sensing subassembly.

Optionally, an adjusting bracket is arranged between the light incident bracket and the image sensing assembly, and the adjusting bracket can maintain a distance between the light incident bracket and the image sensing assembly.

By adopting the technical scheme, the distance between the light incidence support and the image sensing assembly can be adjusted through the adjusting frame, so that the light of the second light path can obtain a proper optical image in the image sensing assembly.

Optionally, the spectrum connection portion includes an optical fiber connector connected to the collection input end of the absolute spectrum collection module.

Through adopting above-mentioned technical scheme, the light of first light path passes through fiber connector and gets into absolute spectrum collection module for light can stably propagate to absolute spectrum collection module in.

Optionally, the method further includes:

the light transmitter is connected between the light inlet assembly and the spectrum connecting part and is used for transmitting the light rays entering the light inlet assembly to the absolute spectrum acquisition module;

the optical adjusting piece is arranged on the light transmitter and used for adjusting the optical property of the light passing through the light transmitter, and the optical adjusting piece comprises one or more combinations of an attenuation piece and an aperture adjusting piece.

Through adopting above-mentioned technical scheme, the decay piece can be weakened to the light that gets into absolute spectrum collection module to the light intensity degree that gets into absolute spectrum collection module is changed. The aperture adjusting sheet can change the size range of a light ray area entering the absolute spectrum acquisition module.

Optionally, the optical adjustment member includes an aperture adjustment sheet, the aperture adjustment sheet and the light transmitter are movably disposed relatively, and the aperture adjustment sheet is provided with a plurality of light path holes with different apertures;

and/or, the optical adjusting part comprises an attenuation sheet, the attenuation sheet and the light transmitter are movably arranged relatively, and the attenuation sheet is provided with a plurality of filter lens holes for installing filter lenses.

By adopting the technical scheme, the aperture adjusting sheet can move the appointed aperture hole to the light inlet assembly in a movable mode, so that the size of the area of the light entering the absolute spectrum acquisition module is kept in a certain appointed range. The attenuation sheet can move the designated filter hole into the light inlet assembly in a movable mode, so that the attenuation sheet can attenuate the incoming light.

Optionally, the optical module further comprises a hidden bottom buckle movably connected to the light entrance assembly, and the hidden bottom buckle can block light propagation between the light entrance assembly and the spectrum connection portion when entering the optical channel of the light entrance assembly.

By adopting the technical scheme, when the hidden bottom buckle enters the optical channel of the light inlet component, the hidden bottom buckle blocks the light transmission between the light transmitter and the spectrum connecting part, and the absolute spectrum acquisition module can acquire data of the equipment under the condition of no light.

Drawings

Fig. 1 is a schematic structural diagram of an absolute spectrum acquisition system according to an embodiment of the present application.

Fig. 2 is a conceptual diagram of an incident light path, a first light path, and a second light path in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an optical subassembly, a light splitter, and an absolute spectrum acquisition module according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of an optical device according to an embodiment of the present disclosure.

Fig. 5 is a conceptual diagram of an optical adjuster according to an embodiment of the present invention, in which fig. 5 (a) shows a single aperture-adjusting piece combined with a single attenuation piece, and fig. 5 (b) shows a single aperture-adjusting piece combined with a plurality of attenuation pieces.

Fig. 6 is a conceptual diagram of the incident light path, the first light path and the second light path in the second embodiment of the present application.

Description of reference numerals:

1. a housing; 2. a light inlet component; 21. an image sensor connecting portion; 22. a spectrum connecting part; 3. a light splitting member; 31. a spectroscopic support; 4. an image sensing component; 41. an image sensor; 42. a control circuit board; 43. an adjusting bracket; 5. an absolute spectrum acquisition module; 6. a light bracket is arranged; 61. a housing hole; 62. a spectroscopic aperture; 63. connecting holes; 64. mounting holes; 7. a light entrance lens; 8. an optical adjustment member; 81. an attenuation sheet; 811. a filter hole; 82. an aperture adjusting sheet; 821. an optical path hole; 9. a light transmitter; 91. a hidden bottom button.

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.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship, unless otherwise specified.

Embodiments of the present invention are described in further detail below with reference to figures 1-6 of the drawings.

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 housing 1, and a light incident assembly 2, a light splitting member 3, an image sensing assembly 4 and an absolute spectrum collection module 5, which are disposed in the housing 1. The light entering component 2 is used for light emitted by the object to be measured to enter the interior of the shell 1, the light entering component 2 is provided with an incident light path, and the light entering component 2 propagates along the incident light path. The light splitting component 3 passes through the incident light path and is arranged at the tail end of the incident light path, and is used for splitting the incident light path into a first light path and a second light path, wherein the first light path is transmitted to the absolute spectrum acquisition module 5, and the second light path is transmitted to the image sensing component 4. When the light reaches the light splitting element 3 along the incident light path, the light propagates through the first light path and the second light path, and then propagates through the absolute spectrum collection module 5 and the image sensing element 4.

Referring to fig. 2, since the light beams of the first optical path and the second optical path all originate from the same incident optical path, that is, the light sources of the absolute spectrum acquisition module 5 and the image sensing component 4 all originate from the same object, when the light beam of the first optical path propagates to the absolute spectrum acquisition module 5 and the light beam of the second optical path propagates to the image sensing component 4, the image sensing component 4 can reflect the content of the light beam of the first optical path entering the absolute spectrum acquisition module 5 based on the optical image displayed by the light beam of the second optical path.

Referring to fig. 2, in an actual application scenario, according to an optical image of the image sensing component 4, it can be known whether a light ray of the measured object falls on a designated position, and if the light ray does not fall on the designated position, the measured object can be located on the designated position through position adjustment, so that the light ray of the measured object can be accurately emitted into the absolute spectrum acquisition module 5, and then the absolute spectrum is accurately acquired.

Referring to fig. 1 and fig. 3, for a detailed description of the structure of the light incident assembly 2, in the present embodiment, the light incident assembly 2 includes a light incident bracket 6 and a light incident lens 7, wherein the light incident lens 7 allows light outside the housing 1 to enter the housing 1, the light incident lens 7 is embedded and fixed on the housing 1, and the light incident lens 7 is installed on one side of the housing 1 away from the absolute spectrum acquisition module 5. One end of the light incident lens 7 is exposed outside the housing 1, the other end of the light incident lens 7 enters the housing 1 to form a light exit end, and the light exit end of the light incident lens 7 is connected with the light incident support 6. The light path between the light incident brackets 6 is the incident light path after entering the light incident lens 7. In the present embodiment, the central axis direction of the light entrance lens 7 is arranged in the horizontal direction, and the incident light path is also arranged in the horizontal direction.

Referring to fig. 1 and fig. 3, the light incident support 6 is fixedly installed in the housing 1, and the specific fixing manner may be bolting, clamping, adhering, and the like, which is not limited in this embodiment. The end of the light incident bracket 6 facing the light incident lens 7 is provided with a containing hole 61, the shape and the outline inside the containing hole 61 are matched with the shape and the outline of the light emergent end of the light incident lens 7, and the light emergent end of the light incident lens 7 is contained in the containing hole 61. In this embodiment, the light-entering support 6 covers the light-exiting end of the light-entering lens 7 to form a light-shielding structure capable of being sealed, so as to block the influence of the light that does not enter the light-entering lens 7 on the light path inside the housing 1.

Referring to fig. 3, further, in order to enhance the stability between the light entrance lens 7 and the light entrance bracket 6, the light entrance lens 7 is fixed on the light entrance bracket 6 in a detachable manner, such as bolting, clamping, and bonding.

Referring to fig. 3, the structure of the light splitter 3 is specifically described, and in this embodiment, the light splitter 3 is preferably an optical device capable of splitting the light path into a plurality of light paths, such as a spectroscope or a half-silvered mirror. The installation position of the light splitting member 3 passes through the central axis of the light entrance lens 7 to pass through the incident light path. The light passes through the beam splitter 3 to transmit a path collinear with the incident path and to reflect a path angularly disposed with respect to the incident path. In this embodiment, the transmitted optical path that is collinear with the incident optical path is a first optical path, and the reflected optical path that is angularly disposed from the incident optical path is a second optical path. Specifically, the incident light path is perpendicular to the second light path.

Referring to fig. 3 and 4, in the present embodiment, the light splitter 3 is installed in the light incident bracket 6. Specifically, the light incident support 6 is provided with a light splitting hole 62 for accommodating the light splitting element 3, and the light splitting element 3 is installed and fixed in the light splitting hole 62.

Referring to fig. 4, the light splitting hole 62 communicates with the accommodating hole 61, and the light splitting hole 62 passes through the central axis of the light entrance lens 7, so that the light splitting hole 62 and the light splitting component 3 located in the light splitting hole 62 can be aligned with the light exit end of the light entrance lens 7, and the light of the light entrance lens 7 can be transmitted to the light splitting component 3 according to the incident light path.

Referring to fig. 3 and 4, in this embodiment, the absolute spectrum collection module 5 is disposed on a side of the light incident support 6 away from the light incident lens 7, the image sensing assembly 4 is disposed on a lower portion of the light incident support 6, and the light splitting hole 62 communicates with the side of the light incident support 6 facing the absolute spectrum collection module 5, so that the first light path split by the light splitting element 3 can point to the absolute spectrum collection module 5, and the light splitting hole 62 further communicates with a lower end of the light incident support 6, so that the second light path split by the light splitting element 3 can point to the image sensing assembly 4.

Referring to fig. 4, regarding the way in which the light of the second light path propagates to the image sensing component 4, in the present embodiment, the light incident bracket 6 is provided with an image sensor connecting portion 21 for establishing the second light path. Specifically, the lower portion of the light incident bracket 6 is provided with a connecting hole 63, the image sensing assembly 4 is disposed at the connecting hole 63, the connecting hole 63 is communicated with the light splitting hole 62, and the connecting hole 63 forms the image sensor connecting portion 21. The connection hole 63 enables the light of the second light path to be transmitted to the image sensor module 4, and has a sealed light shielding effect to block the influence of other light rays on the second light path, which are not the light entering the light-entering lens 7.

Referring to fig. 4, a detailed description about the structure of the image sensor assembly 4 is provided, in this embodiment, the image sensor assembly 4 includes an image sensor 41 and a control circuit board 42, the image sensor 41 is preferably a CCD camera, the image sensor 41 is fixedly soldered on the control circuit board 42, the control circuit board 42 is fixed on the lower portion of the light incident frame 6, and in this embodiment, the control circuit board 42 is fixed on the light incident frame 6 through a frame structure. The collecting end of the image sensor 41 is vertically aligned with the light splitter 3 from bottom to top to receive the light of the second optical path.

Referring to fig. 4, in the present embodiment, the lower surface of the light incident bracket 6 is provided with a mounting hole 64, the mounting hole 64 communicates with the connection hole 63, and the shape and size of the inside of the mounting hole 64 is larger than those of the control circuit board 42, and the control circuit board 42 is accommodated and fixed in the mounting hole 64. In the present embodiment, the size of the mounting hole 64 is larger than that of the connection hole 63, and a stepped positioning structure for the control circuit board 42 is further formed between the connection hole 63 and the mounting hole 64.

Referring to fig. 4, for further explanation on a specific installation manner of the image sensor module 4, in the present embodiment, an adjusting bracket 43 is further disposed between the light incident bracket 6 and the image sensor module 4, and the adjusting bracket 43 is used for maintaining a specified distance between the light incident bracket 6 and the image sensor module 4. Specifically, the adjusting bracket 43 is provided with a groove for accommodating the control circuit board 42 and a through hole for exposing the image sensor 41 out of the groove, and the control circuit board 42 is fixed in the groove by bonding or bolting.

Referring to fig. 4, the shape and size of the inside of the mounting hole 64 is greater than or equal to the size of the adjusting bracket 43, the adjusting bracket 43 is accommodated in the mounting hole 64, and the adjusting bracket 43 is detachably connected with the light incident bracket 6, in this embodiment, the adjusting bracket 43 is detachably connected with the light incident bracket 6 through a bolt. It will be appreciated that the thickness of the spacer 43 determines the distance between the image sensor assembly 4 and the light incident housing 6, and thus the distance between the image sensor assembly 4 and the light splitting member 3. When the image sensor module 4 is mounted, the distance between the image sensor module 4 and the light splitting member 3 can be maintained within a predetermined range by disposing the adjusting bracket 43 having a predetermined thickness between the image sensor module 4 and the light incident bracket 6.

Referring to fig. 1 and 3, regarding the manner in which the light of the first optical path propagates to the absolute spectrum collection module 5, in this embodiment, the light incident bracket 6 is connected with the light transmitter 9, the light splitting hole 62 is aligned with the light transmitter 9 to propagate the light to the light transmitter 9, and the light incident bracket 6 is connected with the spectrum connection portion 22 for establishing the first optical path through the light transmitter 9. Spectral connection 22 is embodied as a fiber optic connector. The absolute spectrum acquisition module 5 is bolted in the shell 1, the acquisition input end of the absolute spectrum acquisition module 5 is aligned with the light splitting piece 3, and the central axis of the acquisition input end of the absolute spectrum acquisition module 5 is parallel or collinear with the central axis of the light incident lens 7. The light from the light-incident lens 7 will propagate to the optical fiber connector after passing through the light-splitting component 3, and then propagate into the collection input end of the absolute spectrum collection module 5. The spectrum connecting portion 22 can transmit the light of the first optical path to the absolute spectrum collecting module 5, and has a sealed light shielding effect to block the influence of other light not entering the light lens 7 on the light of the first optical path.

Referring to fig. 4, for further explanation of a specific installation manner of the light splitting member 3, in the present embodiment, the light incident holder 6 is provided with a light splitting holder 31 for supporting the light splitting member 3. Specifically, the light splitting bracket 31 is installed in the light splitting hole 62, a through hole for light to pass through is formed in the middle of the light splitting bracket 31, and the light splitting element 3 is embedded and fixed in the through hole. In the present embodiment, the outer shape of the spectroscopic piece 3 matches the inner wall shape of the spectroscopic hole 62, and when both the spectroscopic holder 31 and the spectroscopic hole 62 are not completely fixed, the spectroscopic holder 31 can relatively slide within the spectroscopic hole 62, and the sliding direction is parallel to the incident light path.

Referring to fig. 4, since the spectroscopic member 3 is fixed to the spectroscopic holder 31, the movement of the spectroscopic holder 31 can adjust the position of the spectroscopic member 3 in the spectroscopic hole 62. Therefore, when the spectroscopic holder 31 is mounted, the position of the spectroscopic member 3 can be adjusted by sliding the spectroscopic holder 31 so that the second optical path formed by the spectroscopic member 3 can be aligned in the image sensing assembly 4. Then, the light splitting support 31 is completely fixed in the light incident support 6, and the fixing manner may be bolting, bonding, clamping, and the like.

Referring to fig. 4, further, the inside cross section of the splitting aperture 62 is circular, when both the splitting support 31 and the splitting support 31 are not completely fixed, the splitting support 31 can rotate relatively in the splitting aperture 62, and the rotation axis is parallel to the incident light path. The angle of rotation of the beam-splitting support 31 determines the angle of rotation of the beam-splitting element 3 relative to the light-entering support 6 and thus determines the direction of emission of the second light path. When the spectroscopic support 31 is mounted, the position of the spectroscopic member 3 can be adjusted by rotating the spectroscopic support 31 so that the second optical path formed by the spectroscopic member 3 can be aligned in the image sensing assembly 4. Then, the light splitting support 31 is completely fixed in the light incident support 6, and the fixing manner may be bolting, bonding, clamping, and the like.

Referring to fig. 2 and 3, for further explanation of relevant components of the light inlet module 2, in the present embodiment, a dark bottom buckle 91 is disposed at one end of the light transmitter 9 close to the spectrum connecting portion 22, and the dark bottom buckle 91 is movably connected to the spectrum connecting portion 22. In this embodiment, the hidden bottom buckle 91 is disposed on the light transmitter 9 in a direction perpendicular to the axis of the light transmitter 9, and is fixedly connected to the light transmitter 9 by bolting, bonding, clamping, etc. The dark bottom button 91 is preferably an electronic shutter. The dark buckle 91 can be opened/closed by a built-in shutter closing switch, when the shutter of the dark buckle 91 is closed, the light transmission between the light transmitter 9 and the spectrum connecting part 22 can be blocked, and at the moment, the absolute spectrum acquisition module 5 can acquire and obtain data of the device under the condition of no light; when the shutter of the dark buckle 91 is opened, the light of the light transmitter 9 can be transmitted to the spectrum connecting part 22, and the absolute spectrum data of the measured object can be collected by the absolute spectrum collection module 5.

Referring to fig. 3, for further explanation of relevant components of the light inlet module 2, in the present embodiment, the light inlet module 2 is further configured with an optical adjustment member 8, and the optical adjustment member 8 is disposed between the light inlet module 2 and the spectrum connection portion 22 through a light transmitter 9, and is used for adjusting optical properties of light entering the absolute spectrum collection module 5, so as to facilitate collection of an absolute spectrum. In the present embodiment, the optical adjustment member 8 is disposed between the light splitter 3 and the dark bottom buckle 91, and only adjusts the light of the first light path, and does not adjust the light transmitted to the image sensing assembly 4.

Referring to fig. 3, the optical adjustment member 8 is disposed on the light transmitter 9. Wherein, the inside of passing optical ware 9 is provided with optical channel to the light that supplies first light path passes through, passes optical ware 9's one end and goes into the beam split hole 62 alignment and sealing connection of light support 6, passes optical ware 9's other end and is connected with fiber connector.

Referring to fig. 3, the optical adjustment member 8 includes one or more combinations of an attenuation sheet 81 and an aperture adjustment sheet 82, and the optical adjustment member 8 passes through the optical path in the optical channel, wherein the attenuation sheet 81 can change the attenuation degree of the light entering the absolute spectrum collection module 5, and the aperture adjustment sheet 82 can change the size range of the light entering the absolute spectrum collection module 5.

Referring to fig. 3, specifically, the side wall of the light transmitter 9 is provided with adjusting holes for allowing the attenuation sheet 81 and the aperture adjusting sheet 82 to enter the optical channel, and the attenuation sheet 81 and the aperture adjusting sheet 82 are inserted into the corresponding adjusting holes respectively. In this embodiment, the light entering the light transmitter 9 passes through the aperture adjusting sheet 82 and then passes through the attenuation sheet 81.

Referring to fig. 3, further, the aperture adjustment sheet 82 is rotatably connected to the light incident bracket 6, and the aperture adjustment sheet 82 is provided with a plurality of light path holes 821 around the axis of the rotation shaft thereof, and the center line of the light path hole 821 is coaxial or parallel to the central axis of the light incident lens 7, and there is a difference between the inner diameters of the light path holes 821. The light path hole 821 can limit the size range of the light ray area, and the larger the inner diameter of the light path hole 821 is, the larger the light ray area that can pass through the light path hole 821 is, the larger the imaging range is, and vice versa. The aperture adjusting sheet 82 allows the designated light path hole 821 to be located in the optical channel, thereby adjusting the degree of restriction of the light passing through the optical channel by the light path hole 821.

Referring to fig. 3, in the present embodiment, the aperture adjustment sheet 82 rotates by using a motor as a power source (not shown).

Referring to fig. 3, in other embodiments, the aperture adjustment sheet 82 may also be an aperture stop to perform the beam adjustment function.

Referring to fig. 3, further, the attenuation sheet 81 is rotatably connected to the light incident frame 6, and a plurality of filter holes 811 are formed around the axis of the rotation shaft of the attenuation sheet 81, and the center line of the filter holes 811 is collinear or parallel with the central axis of the light incident lens 7. A filter lens is fixedly embedded in each filter hole 811, and the filter performance of each filter lens is different. By rotating the attenuator 81, a designated filter lens can be positioned in the optical channel, and the attenuator 81 is adjusted to adjust the degree of attenuation of light.

Referring to fig. 3, in the present embodiment, the damping sheet 81 rotates by using a motor (not shown) as a power source.

Referring to fig. 3, in the present embodiment, the optical adjustment member 8 preferably employs a combination of a single attenuation sheet 81 and a single aperture adjustment sheet 82. In practical applications, the configuration of the optical adjustment member 8 can be determined according to practical requirements, such as the arrangement of a single attenuation sheet 81 on the light transmitter 9, the arrangement of a single aperture adjustment sheet 82 on the light transmitter 9, the arrangement of a single attenuation sheet 81 and a plurality of aperture adjustment sheets 82 on the light transmitter 9, the arrangement of a plurality of attenuation sheets 81 and a single aperture adjustment sheet 82 on the light transmitter 9, and the like.

Referring to fig. 3 and 5, it can be understood that the attenuation plate 81 is a filter lens passing through the filter hole 811 to adjust the intensity of light attenuation, and the aperture adjustment plate 82 plays a role of restricting light through the aperture hole 821. When a single aperture-adjusting plate 82 is provided on the light transmitter 9 in combination with a single attenuation plate 81, it functions in practice as if a light-path hole 821 and a filter lens were provided in the light transmitter 9; when a single aperture-adjusting plate 82 is provided in combination with a plurality of attenuation plates 81 at the same time on the light transmitter 9, it actually functions as if one aperture hole 821 and a plurality of filter lenses are provided in the light transmitter 9.

The implementation principle of an absolute spectrum acquisition system in the embodiment of the application is as follows: after light enters the incident light path of the light-entering component 2, the light passes through the light-splitting component 3 and is split into a first light path and a second light path under the action of the light-splitting component 3 to be transmitted, the light transmitted along the first light path can be transmitted to the absolute spectrum acquisition module 5 through the spectrum connecting part 22, and the light transmitted along the second light path can be transmitted to the image sensing component 4 through the image sensor connecting part 21.

By dividing the incident light path into the first light path and the second light path and transmitting the first light path and the second light path to the absolute spectrum acquisition module 5 and the image sensing module 4, light rays emitted from the same position and passing through the function switching position can be transmitted into the image sensing module 4 and the absolute spectrum acquisition module 5 respectively. Moreover, since the first light path is formed by the incident light path transmitting the light splitting element 3, the second light path is formed by the incident light path refracting at the light splitting element 3, 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 therefore, the optical image in the image sensing component 4 can more accurately present the content of the absolute spectrum acquisition module 5.

When measuring the object to be measured, the position of the object to be measured in the optical image of the image sensing assembly 4 can be observed through the image sensing assembly 4, and then the object to be measured is located at a designated position by the position adjustment. The arrangement of the ocular lens is cancelled, the adjustment of the ocular lens for direct observation of human eyes is replaced, and the error of human eye vision is reduced, so that the measurement precision during absolute spectrum acquisition is improved.

The second embodiment:

referring to fig. 6, the present embodiment is different from the first embodiment in that: the incident light path can transmit a light path which is collinear with the incident light path when passing through the light splitting component 3 as a second light path, the second light path is transmitted to the image sensing component 4, the incident light path can reflect a light path which is collinear with the incident light path when passing through the light splitting component 3 as a first light path, the first light path is transmitted to the absolute spectrum acquisition module 5, and the first light path is perpendicular to the second light path.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, 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 (10)

1. An absolute spectrum acquisition system, comprising:

the light inlet component (2) is provided with an incident light path;

a light splitting member (3) 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 (22) is arranged on the first light path and is used for enabling the light rays of the first light path to be transmitted to the absolute spectrum collecting module (5);

and the image sensor connecting part (21) is arranged on the second light path and is used for enabling the light rays of the second light path to be transmitted to the image sensing component (4).

2. The absolute spectrum acquisition system of claim 1, wherein: the light-incident component (2) comprises a light-incident lens (7) and a light-incident support (6), the light-incident support (6) is provided with a light-splitting hole (62) for accommodating the light-splitting piece (3), and the light-splitting hole (62) is aligned to the light-incident lens (7).

3. The absolute spectrum acquisition system of claim 2, wherein: a light splitting support (31) used for fixing the light splitting piece (3) is arranged in the light splitting hole (62), the light splitting support and the light inlet support (6) can slide relatively, and the sliding direction is parallel to the incident light path.

4. The absolute spectrum acquisition system according to claim 2, wherein: a light splitting support (31) used for fixing the light splitting piece (3) is arranged in the light splitting hole (62), the light splitting support and the light inlet support (6) can rotate relatively, and the rotation axis is parallel to the incident light path.

5. The absolute spectrum acquisition system of claim 2, wherein: the light incidence support (6) is provided with a connecting hole (63) communicated with the light splitting hole (62), and the connecting hole (63) is aligned with the image sensing assembly (4) to form the image sensor connecting part (21).

6. The absolute spectrum acquisition system according to claim 5, wherein: the light-incident support (6) and the image sensing assembly (4) are arranged between adjusting frames (43), and the adjusting frames (43) can maintain the distance between the light-incident support (6) and the image sensing assembly (4).

7. The absolute spectrum acquisition system of claim 1, wherein: the spectrum connection part (22) comprises an optical fiber connector connected to the collection input end of the absolute spectrum collection module (5).

8. The absolute spectral acquisition system of claim 1, further comprising:

the light transmitter (9) is connected between the light inlet component (2) and the spectrum connecting part (22) and is used for transmitting the light rays entering the light inlet component (2) to the absolute spectrum acquisition module (5);

the optical adjusting piece (8) is arranged on the light transmitter (9) and used for adjusting the optical property of the light passing through the light transmitter (9), and the optical adjusting piece (8) comprises one or more combinations of an attenuation sheet (81) and an aperture adjusting sheet (82).

9. The absolute spectrum acquisition system of claim 8, wherein: the optical adjusting piece (8) comprises an aperture adjusting sheet (82), the aperture adjusting sheet (82) and the light transmitter (9) are arranged in a relatively movable mode, and the aperture adjusting sheet (82) is provided with a plurality of light path holes (821) with different apertures;

and/or, the optical adjusting piece (8) comprises an attenuation sheet (81), the attenuation sheet (81) and the light transmitter (9) are arranged in a relatively movable mode, and the attenuation sheet (81) is provided with a plurality of filter holes (811) for installing filter lenses.

10. The absolute spectrum collection system of claim 1, further comprising a blind button (91) movably connected to the light entrance component (2), wherein the blind button (91) is capable of blocking light propagation between the light entrance component (2) and the spectrum connection portion (22) when entering the optical channel of the light entrance component (2).

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