CN116448244B - Light projector brightness detection device based on external environment changes - Google Patents
Light projector brightness detection device based on external environment changes Download PDFInfo
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- CN116448244B CN116448244B CN202310729366.1A CN202310729366A CN116448244B CN 116448244 B CN116448244 B CN 116448244B CN 202310729366 A CN202310729366 A CN 202310729366A CN 116448244 B CN116448244 B CN 116448244B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0214—Constructional arrangements for removing stray light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J2001/4247—Photometry, e.g. photographic exposure meter using electric radiation detectors for testing lamps or other light sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The application relates to the technical field of light source light-emitting curve measurement, in particular to a light-emitting lamp brightness detection device based on external environment change. The end part of the horizontal rail is slidably mounted on the vertical rail, and the hanging bracket is mounted at the upper end of the vertical rail. The scattered electrons generated on the unit area through the light are used as light intensity basis, the camera is not required to directly align the light for detecting the light intensity, the angle direction adjusting error is reduced, the electrons are attracted by the electronic bucket to be discharged after overflowing, and the current is changed into signal output by the current transducer after being amplified.
Description
Technical Field
The application relates to the technical field of light source light-emitting curve measurement, in particular to a projection lamp brightness detection device based on external environment change.
Background
Led light sources are widely used in the field of illumination due to their low energy consumption and high light efficiency, and with the development of light sources, led light sources can be customized and can generate specific distribution conditions by means of reflectors and the like, so that the light sources can meet the requirements of more and more illumination ranges.
Such as stage lighting, auditorium exterior wall lighting, soft lighting of museum collections, etc., all require specific light intensity distribution designs. The light designer of building, decoration needs the distribution condition of light source to make the light design in software, and the projecting lamp producer is then need produce the light source of suitable light intensity distribution and sell, in the middle of just using the grading curve to link, in the present standard measurement method, need establish spherical space and set up accurate angle change structure, the light intensity of the light that goes out in the specific direction is surveyed by the camera sensor, trace centering error all can lead to measuring curve deformation, influence the light design, the complicated survey of grading curve is the main technical obstacle between lamp light designer and the producer.
In addition, in the aspect of road traffic lighting and bedroom light allocation, the glare condition needs to be considered, because the eye comfort of a driver directly influences the driving safety, and in the horizontal state, soft and comfortable lighting light distribution is also needed, and the light distribution curve needs to be measured for theoretical research.
Disclosure of Invention
The application aims to provide a projection lamp brightness detection device based on external environment change so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme:
the utility model provides a projecting lamp brightness detection device based on external environment changes, detection device includes the base station, the light effect spare, examine the flow circuit, the horizontal rail, the gallows, gallows tip installation waits to detect the projecting lamp, the base station is installed on the horizontal rail, the base station is towards the surface mounting light effect spare of projecting lamp, still install on the base station and examine the flow circuit, examine flow circuit and light effect spare electricity and be connected, the light effect spare receives the projecting lamp and exports the electrical signal on examining the flow circuit after shining, the base station is sliding connection with the connection of horizontal rail.
For the spherical similar point light source, the projection direction is vertical downwards, the relation P-theta of the light intensity P along with the included angle theta of the light and the optical axis is only needed to be detected, the base platform slides on the horizontal rail, the width of the upper surface of the light effect piece is slid each time, the distribution condition of the light intensity in the plane where the light projector and the light effect piece are located on the path is detected, and therefore the relation between the light intensity P of the light projector in the plane and the angle theta is obtained. According to the application, the projection lamp is fixed, the component for detecting the light intensity is linearly moved to obtain the light intensity signal so as to describe the light distribution curve in the plane, the projection lamp is not required to rotate, the measuring component is not required to be arranged on the spherical surface or the circular arc surface, and inaccurate angle change is not required, so that the operation action precision is improved, and the light distribution curve measurement is more accurate.
The detection device further comprises a vertical rail, the end part of the horizontal rail is slidably mounted on the vertical rail, and the hanging frame is mounted at the upper end of the vertical rail.
The light-emitting of the projection lamp is from the two sides of the optical axis, the light-emitting point on the left side of the optical axis, the light-emitting point on the right side of the optical axis, and the light-emitting direction is right, the light distribution curve can be obtained only by detecting the light-emitting distribution condition on one section, however, in order to realize the light-gathering effect and the side light is not too much, the part of the light on the left side of the optical axis is inclined downwards to the right, the light on the right side of the optical axis is the same, so that the cross emission condition exists, and if the measurement is carried out on only one section, much information of the light distribution curve can be lost,
the vertical rail allows the horizontal rail to move up and down along the base, for the situation that the light emitted by the projection lamp is asymmetric along the circumference of the optical axis, a plurality of sections can be selected for light intensity distribution detection, the light source is divided into five light emitting points, each light emitting point transmits a range of light downwards, the overall light intensity distribution of the light source is the light of the five light emitting points, the distribution of the light intensity of the first light emitting point x along with the angle theta is expressed by Px and theta, when no other light emitting points interfere, one horizontal movement of the light effect piece can finish Px and theta measurement, and because the number of the light emitting points is five, the one horizontal movement of the light effect piece is insufficient for solving the light intensity variation situation of the angle theta, at least five independent measurement value groups are needed for solving the light intensity variation situation of each light emitting point along with the angle theta, if the light distribution curve of the light source is more accurate, the light source should be further subdivided in the width direction to have more light emitting points, and the overall light distribution situation along with the angle theta is expressed.
The light effect piece is a metal object, the base station comprises a surface plate, a bottom plate and an insulating block, the surface plate is connected with the bottom plate in a jogged way by taking the insulating block as an intermediate, a gap between the bottom plate and the surface plate exists, the light effect piece is arranged on the bottom plate, the light effect piece passes through the surface plate to expose the upper surface, a gap exists between the light effect piece and the surface plate,
the current detecting circuit comprises a charging circuit, a discharging circuit and a current transmitter, wherein the charging circuit is electrically connected with the light effect piece, the charging circuit enables the light effect piece to be negative potential relative to the ground, the discharging circuit is connected with the gauge board, the gauge board is a metal piece, the negative electrode of the discharging circuit is connected with the ground, the discharging circuit is connected with the gauge board relative to the positive potential of the ground, and the current transmitter is arranged on the discharging circuit.
The photoelectric effect piece becomes negative potential through the charging circuit, carries a large amount of electrons, and owing to photoelectric effect after the light shines, there is electron that is proportional with light intensity to spill over from photoelectric effect piece surface, and the surface plate connection bleeder circuit becomes positive potential and attracts the collection and guide the earth to the electron of loss, and the in-process of electron flows and is detected and output the signal of telecommunication by the current transducer.
The current detection circuit further comprises a current amplifier, the current amplifier is arranged on the discharging line, and the current amplifier is positioned on one side, close to the gauge board, of the current transmitter.
The current amplifier can use semiconductor devices such as triodes, field effect transistors and the like to realize the amplification output of input current, so that smaller electron overflow quantity on the light effect element is converted into larger current, visual fluctuation on the current transducer is larger, and the detection sensitivity is improved.
The bottom plate is a conductor, the light effect piece is embedded in the bottom plate, and the charging circuit is connected to the bottom plate.
The bottom plate is fully contacted with the light effect piece, and the bottom plate is used as a connecting medium of the charging circuit and the light effect piece to prevent the charging circuit and the light effect piece from generating electron transfer resistance due to point contact.
The base station also comprises a current collecting structure, the current collecting structure is higher than the upper surface of the surface plate, and the current collecting structure does not influence the light receiving of the light effect piece in the angle of 10% -100% of the light output quantity of the light source.
If the surface plate is simply used as a component for receiving electrons, the electrons are emitted from the surface of the light effect element basically perpendicularly to the surface, so that the electrons move upwards, and although the surface plate has attractive force for the electrons, the force for guiding deflection of the electrons is insufficient, a collecting structure higher than the surface of the surface plate is used for guiding and collecting the electrons, preferably, the electrode is arranged in the emitting direction of the electrons, but the collecting structure is used for collecting the electrons, so that the irradiation of light source light to the light effect element can be influenced, and the collecting structure mainly aims at guiding and collecting the electrons from the side above the light effect element.
The current collecting structure is an electronic bucket, the electronic bucket is a conductor and is embedded into the upper surface of the surface plate, and the lower end of the electronic bucket encloses the upper part of the light effect piece.
The inner surface of the electronic bucket encloses electrons overflowing from the upper surface of the light effect piece, the electronic bucket is positive in potential, the electrons are attracted, the electrons are deflected and move to the electronic bucket, and partial electrons are prevented from being emitted into a surrounding space and do not pass through a corresponding relation of influencing current to light intensity from a discharge line.
The light effect element is potassium simple substance.
The limit wavelength of the photoelectric effect of potassium is about 550nm, namely, the light lower than the wavelength can generate the photoelectric effect, the wavelength range of led white light is about 440-460 nm, the photoelectric effect can be generated, the limit wavelength of the photoelectric effect of common iron, copper and other materials is below 400nm, the photoelectric effect cannot be generated, the limit wavelength is related to the activity of metal objects, the activity of rubidium and cesium is higher in theory, the photoelectric effect is easier to generate, but in consideration of the use cost and safety, potassium, calcium and sodium are selected, wherein the limit wavelength of potassium is the highest.
The detection device further comprises a nitrogen pipe, the bottom of the bottom plate is provided with an air injection hole, the air injection hole is positioned in the range of the insulation block embedded into the bottom plate, and the nitrogen pipe injects nitrogen to the side of the bottom of the light effect piece. The nitrogen is blown upwards to blow away the surrounding oxygen, so that the anaerobic environment of potassium is maintained, and the combustion caused by oxidative heating is prevented. In practice, the glass cover can be used to cover the potassium so as to keep the potassium in a closed vacuum state, however, the addition of the glass cover can lead to deflection of light rays, which is unfavorable for calculating the light ray emergence angle.
The base station is divided into two petals, the two petals are provided with light effect pieces and current detection circuits, and the two petals of the base station are electrically isolated by using an insulator.
The light effect pieces which are respectively arranged on two sides of a downward vertical optical axis of the projection lamp detect the light intensity distribution conditions on two sides of the optical axis at the same time, the movement of the base station on the horizontal rail can completely detect the light intensity distribution only by moving the two light effect pieces on one side of each light effect piece, the light intensity distribution can be completely obtained without crossing the optical axis, half of detection time is saved, a plurality of light effect pieces can be theoretically arranged in the horizontal movement direction to synchronously detect the light intensity, however, in order to prevent overflowing electrons of one light effect piece from being attracted by an isolated current detection circuit, the light effect pieces are not too much.
Compared with the prior art, the application has the following beneficial effects: according to the application, scattered electrons generated by light rays on a unit area are used as light intensity basis, a camera is not required to directly align the light rays for light intensity detection, angle direction adjustment errors are reduced, electrons are absorbed by an electronic bucket to discharge after overflowing, current is changed into signal output by a current transducer after amplification, signals in the moving process of a base station are counted, light intensity distribution of a projection lamp on the section is obtained, a light source of light passing through an optical axis does not exist, a light distribution curve can be obtained by detecting the light intensity distribution of one section, for the light source of light rays passing through the optical axis, each point light-emitting curve after the light source is taken by the light source is detected on a plurality of sections and obtained by an equation set, the light-emitting curve of the whole light source is the sum of the light-emitting curves of a plurality of representative points, the light distribution curve of the projection lamp is detected to be linear movement to be taken, and displacement errors in the detection process are prevented.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of the basic structure of the present application;
FIG. 2 is a schematic illustration of a cross-sectional light intensity detection with vertical rails of the present application;
FIG. 3 is a schematic diagram of the present application detecting light intensity in a new section;
FIG. 4 is a schematic diagram of the detection principle of the light effect member and the nearby components of the present application;
FIG. 5 is a schematic diagram of a representative light intensity distribution of a projector without light passing through an optical axis;
FIG. 6 is a schematic diagram of a representative light intensity distribution of a projector with light passing through an optical axis;
in fig. 5 and 6, the back color treatment is performed to prevent the black portion from being too much;
in the figure: 1-base station, 11-surface plate, 12-bottom plate, 121-gas injection hole, 13-gap, 14-insulating block, 15-electronic bucket, 2-light effect piece, 3-current detection circuit, 31-charging circuit, 32-discharging circuit, 33-current amplifier, 34-current transducer, 4-horizontal rail, 5-vertical rail, 6-hanger, 7-nitrogen pipe.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The utility model provides a projecting lamp brightness detection device based on external environment changes, detection device includes base station 1, light effect spare 2, current detection circuit 3, horizontal rail 4, gallows 6, the installation of gallows 6 tip waits to detect the projecting lamp, base station 1 is installed on horizontal rail 4, base station 1 is towards the surface mounting light effect spare 2 of projecting lamp, current detection circuit 3 is still installed on base station 1, current detection circuit 3 is connected with light effect spare 2 electricity, current detection circuit 3 output electrical signal after light effect spare 2 receives the projecting lamp irradiation, base station 1 is sliding connection with the connection of horizontal rail 4.
As shown in fig. 1, for a spherical point light source, the projection direction is vertical downward, only the relation P- θ of the light intensity P along with the included angle θ of the light and the optical axis is detected, the base 1 is slid on the horizontal rail 4, the width of the upper surface of the light effect element 2 is slid each time, the distribution condition of the light intensity on the path in the plane where the light projector and the light effect element 2 are located is detected, so as to obtain the relation of the light intensity P and the angle θ of the light projector in the plane, and it should be noted that the upper surface area of the light effect element 2 needs to be processed by trigonometric function with respect to θ to obtain the light intensity value. According to the application, the projection lamp is fixed, the component for detecting the light intensity is linearly moved to obtain the light intensity signal so as to describe the light distribution curve in the plane, the projection lamp is not required to rotate, the measuring component is not required to be arranged on the spherical surface or the circular arc surface, and inaccurate angle change is not required, so that the operation action precision is improved, and the light distribution curve measurement is more accurate.
The ambient light will generate a background photoelectric effect on the light effect element 2, when the current signal is processed, filtering is needed, the light effect element does not rotate light any more, but performs translation operation, so that the irradiation of the ambient light on the light effect element 2 will not have a large change, the change of the ambient brightness will generate the fluctuation of a trace background signal on the signal, and the ambient light can perform continuous trace fluctuation change, so as to be used as the state determination of whether the light effect element 2 is in a normal light receiving state.
The detection device further comprises a vertical rail 5, the end part of the horizontal rail 4 is slidably mounted on the vertical rail 5, and a hanging bracket 6 is mounted at the upper end of the vertical rail 5.
For the light-emitting condition of the projection lamp, namely, the representative light distribution shown in fig. 5, the light-emitting point on the left side of the light axis, the light-emitting point on the right side of the light axis, and the light-emitting deflection right, the light distribution condition on one section is detected to obtain the light distribution curve, however, for the light distribution condition shown in fig. 6, in order to realize the light-gathering effect and the condition that the side light is not too much, the part of the light on the left side of the light axis is inclined downwards towards the right, and the part of the light on the right side of the light axis is the same, so that the cross emission condition exists, and if the measurement is carried out on only one section, much information of the light distribution curve can be lost,
the vertical rail 5 allows the horizontal rail 4 to move up and down along the base 1, as shown in fig. 2, for the situation that the light emitting of the projection lamp is asymmetric along the circumference of the optical axis, a plurality of sections can be selected to detect the light intensity distribution, the light source is divided into five light emitting points, each light emitting point respectively transmits a range of light downwards, the overall light intensity distribution of the light source is the light of five light emitting points, the distribution of the light intensity of the first light emitting point x1 along with the angle theta is expressed by Px1 and theta by using a function, when no other light points interfere, the one-time horizontal movement of the light effect element 2 can finish the measurement of Px1 and theta, and because the number of the light emitting points is five, the one-time horizontal movement of the light effect element 2 is capable of simultaneously obtaining superposition sigma Px and theta of five light intensities, at least five independent measured values are needed to solve the change situation of each light emitting point along with the angle theta, if the light distribution curve of the light source is needed to be more accurate, the light distribution curve of the light source should be further more in the width direction along with the change of the angle theta, and the overall light distribution of five light emitting points can be expressed by five functions along with the light distribution of the angle of five light emitting points on the rail 4, and the overall light emitting point can be expressed by five functions along with the light distribution of five directions.
The light effect piece 2 is a metal object, the base 1 comprises a surface plate 11, a bottom plate 12 and an insulating block 14, the surface plate 11 is connected with the bottom plate 12 in a jogged way by taking the insulating block 14 as an intermediate, a gap 13 between the bottom plate 12 and the surface plate 11 exists, the light effect piece 2 is arranged on the bottom plate 12, the light effect piece 2 passes through the surface plate 11 to expose the upper surface, a gap exists between the light effect piece 2 and the surface plate 11,
the current detection circuit 3 comprises a charging circuit 31, a discharging circuit 32 and a current transducer 34, the charging circuit 31 is electrically connected with the light effect element 2, the charging circuit 31 enables the light effect element 2 to be at a negative potential relative to the ground, the discharging circuit 32 is connected with the gauge board 11, the gauge board 11 is a metal piece, the negative electrode of the discharging circuit 32 is connected with the ground, the discharging circuit 32 is connected with the gauge board 11 relative to the positive potential of the ground, and the current transducer 34 is arranged on the discharging circuit 32.
As shown in fig. 4, the light effect element 2 becomes negative potential through the charging circuit 31, a large amount of electrons are carried, electrons proportional to the light intensity overflow from the surface of the light effect element 2 due to the photoelectric effect after the light is irradiated, the gauge board 11 is connected with the discharging circuit 32 to become positive potential to attract and collect the escaped electrons and guide the escaped electrons to the ground, and the current transducer 34 detects and outputs an electric signal in the flowing process of the electrons.
The current sensing circuit 3 further comprises a current amplifier 33, the current amplifier 33 being arranged on the bleed line 32, the current amplifier 33 being located on the side of the current transducer 34 close to the gauge panel 11.
The current amplifier 33 may use a semiconductor device such as a triode, a field effect transistor, or the like to amplify the input current, thereby converting a smaller electron overflow amount on the photo-effect element 2 into a larger current, so that the visible fluctuation on the current transducer 34 is larger, and the detection sensitivity is improved.
The base plate 12 is a conductor, the light effect member 2 is embedded in the base plate 12, and the charging line 31 is connected to the base plate 12.
The bottom plate 12 is sufficiently contacted with the light effect element 2, and the bottom plate 12 is used as a connecting medium of the charging circuit 31 and the light effect element 2, so that the charging circuit 31 and the light effect element 2 are prevented from generating electron transfer resistance due to point contact.
The base 1 further comprises a current collecting structure, the current collecting structure is higher than the upper surface of the surface plate 11, and the current collecting structure does not influence the light receiving of the light effect element 2 in the angle of 10% -100% of the light output quantity of the light source.
As shown in fig. 4, if only the surface plate 11 is used as a component for receiving electrons, since electrons are emitted substantially perpendicularly to the surface of the light effect element 2 when they overflow from the surface, the electrons move upward, and although the surface plate 11 is attractive to electrons, the force for guiding deflection of electrons is insufficient, a collector structure higher than the surface of the surface plate 11 is used for guiding and collecting electrons, preferably, electrodes are arranged in the emitting direction of electrons, but collecting electrons in the emitting direction may affect the irradiation of light source light to the light effect element 2, and the collector structure of the present application mainly considers guiding and collecting electrons from the side above the light effect element 2.
The current collecting structure is an electronic bucket 15, the electronic bucket 15 is a conductor and is embedded into the upper surface of the surface plate 11, and the lower end of the electronic bucket 15 encloses the upper part of the light effect piece 2.
As shown in fig. 4, the inner surface of the electron bucket 15 encloses electrons overflowing from the upper surface of the light effect member 2, the electron bucket 15 has a positive potential, attracts the electrons, deflects the electrons to the electron bucket 15, and prevents part of the electrons from being emitted into the surrounding space without influencing the correspondence of the current to the light intensity from the discharge line 32.
The light effect element 2 is a potassium simple substance.
The limit wavelength of the photoelectric effect of potassium is about 550nm, namely, the light lower than the wavelength can generate the photoelectric effect, the wavelength range of led white light is about 440-460 nm, the photoelectric effect can be generated, the limit wavelength of the photoelectric effect of common iron, copper and other materials is below 400nm, the photoelectric effect cannot be generated, the limit wavelength is related to the activity of metal objects, the activity of rubidium and cesium is higher in theory, the photoelectric effect is easier to generate, but in consideration of the use cost and safety, potassium, calcium and sodium are selected, wherein the limit wavelength of potassium is the highest.
The detection device further comprises a nitrogen pipe 7, the bottom of the bottom plate 12 is provided with an air injection hole 121, the air injection hole 121 is positioned in the range of the insulating block 14 embedded in the bottom plate 12, and the nitrogen pipe 7 injects nitrogen to the side of the bottom of the light effect piece 2. The nitrogen is blown upwards to blow away the surrounding oxygen, so that the anaerobic environment of potassium is maintained, and the combustion caused by oxidative heating is prevented. In practice, the glass cover can be used to cover the potassium so as to keep the potassium in a closed vacuum state, however, the addition of the glass cover can lead to deflection of light rays, which is unfavorable for calculating the light ray emergence angle.
The base station 1 is divided into two sections, the two sections are provided with the light effect piece 2 and the current detection circuit 3, and the two sections of the base station 1 are electrically isolated by using an insulator.
As shown in fig. 1 to 3, the light effect pieces 2 respectively arranged at two sides of a downward vertical optical axis of the projection lamp detect light intensity distribution conditions at two sides of the optical axis at the same time, the movement of the base 1 on the horizontal rail 4 only needs to complete the movement of the two light effect pieces 2 at one side of each light effect piece, the light intensity distribution can be completely detected, the light intensity is not required to cross the optical axis, half of detection time is saved, a plurality of light effect pieces can be theoretically arranged in the horizontal movement direction to synchronously detect the light intensity, but in order to prevent overflow electrons of one of the light effect pieces 2 from being attracted by an isolated current detection circuit, the light effect pieces 2 are not suitable to be too much.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a projecting lamp luminance detection device based on external environment changes which characterized in that: the detection device comprises a base station (1), a light effect piece (2), a current detection circuit (3), a horizontal rail (4) and a hanging bracket (6),
the light-emitting device is characterized in that a projection lamp to be detected is arranged at the end part of the hanging bracket (6), the base station (1) is arranged on the horizontal rail (4), a light effect piece (2) is arranged on the surface of the base station (1) facing the projection lamp, a current detection circuit (3) is further arranged on the base station (1), the current detection circuit (3) is electrically connected with the light effect piece (2), the light effect piece (2) outputs an electric signal on the current detection circuit (3) after being irradiated by the projection lamp, and the base station (1) is connected with the horizontal rail (4) in a sliding mode;
the detection device further comprises a vertical rail (5), the end part of the horizontal rail (4) is slidably mounted on the vertical rail (5), and the hanging bracket (6) is mounted at the upper end of the vertical rail (5);
the light effect piece (2) is a metal object, the base station (1) comprises a surface plate (11), a bottom plate (12) and an insulating block (14), the surface plate (11) is connected with the bottom plate (12) in a jogged way by taking the insulating block (14) as an intermediate, a gap (13) between the bottom plate (12) and the surface plate (11) exists, the light effect piece (2) is arranged on the bottom plate (12), the light effect piece (2) passes through the surface plate (11) to expose the upper surface, a gap exists between the light effect piece (2) and the surface plate (11),
the current detection circuit (3) comprises a charging circuit (31), a discharging circuit (32) and a current transmitter (34), wherein the charging circuit (31) is electrically connected with the light effect piece (2), the charging circuit (31) enables the light effect piece (2) to be negative potential relative to the ground, the discharging circuit (32) is connected with the gauge board (11), the gauge board (11) is a metal piece, the negative electrode of the discharging circuit (32) is connected with the ground, the discharging circuit (32) is connected with the gauge board (11) relative to the positive potential of the ground, and the current transmitter (34) is arranged on the discharging circuit (32).
2. The device for detecting brightness of a projector according to claim 1, wherein: the current detection circuit (3) further comprises a current amplifier (33), the current amplifier (33) is arranged on the bleeder circuit (32), and the current amplifier (33) is positioned on one side of the current transducer (34) close to the gauge board (11).
3. The device for detecting brightness of a projector according to claim 2, wherein: the base plate (12) is a conductor, the light effect element (2) is embedded in the base plate (12), and the charging circuit (31) is connected to the base plate (12).
4. The device for detecting brightness of a projector according to claim 2, wherein: the base (1) further comprises a current collecting structure, the current collecting structure is higher than the upper surface of the surface plate (11), and the current collecting structure does not influence the light receiving of the light effect piece (2) in the angle of 10% -100% of the light output quantity of the light source.
5. The device for detecting brightness of a projector according to claim 4, wherein: the collecting structure is an electronic bucket (15), the electronic bucket (15) is a conductor and is embedded into the upper surface of the surface plate (11), and the lower end of the electronic bucket (15) encloses the upper part of the light effect piece (2).
6. The device for detecting brightness of a projector according to claim 1, wherein: the light effect piece (2) is a potassium simple substance.
7. The device for detecting brightness of a projector according to claim 6, wherein: the detection device further comprises a nitrogen pipe (7), wherein an air injection hole (121) is formed in the bottom of the bottom plate (12), the air injection hole (121) is located in the range of the insulation block (14) embedded into the bottom plate (12), and the nitrogen pipe (7) injects nitrogen to the bottom side of the light effect piece (2).
8. The device for detecting brightness of a projector according to claim 1, wherein: the base station (1) is divided into two petals, the two petals are provided with the light effect piece (2) and the current detection circuit (3), and the two petals of the base station (1) are electrically isolated by using an insulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310729366.1A CN116448244B (en) | 2023-06-20 | 2023-06-20 | Light projector brightness detection device based on external environment changes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310729366.1A CN116448244B (en) | 2023-06-20 | 2023-06-20 | Light projector brightness detection device based on external environment changes |
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| CN116448244B true CN116448244B (en) | 2023-08-29 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29706488U1 (en) * | 1997-04-11 | 1997-08-07 | TechnoTeam Bildverarbeitung GmbH, 98693 Ilmenau | Arrangement for measuring the luminous intensity distribution of luminaires and lamps |
| CN213842590U (en) * | 2020-10-21 | 2021-07-30 | 深圳市宏润电子塑胶有限公司 | Automatic testing device for light-emitting uniformity of light guide plate |
| CN115219156A (en) * | 2022-07-15 | 2022-10-21 | 康佳集团股份有限公司 | Display screen detection system and display screen detection method |
-
2023
- 2023-06-20 CN CN202310729366.1A patent/CN116448244B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29706488U1 (en) * | 1997-04-11 | 1997-08-07 | TechnoTeam Bildverarbeitung GmbH, 98693 Ilmenau | Arrangement for measuring the luminous intensity distribution of luminaires and lamps |
| CN213842590U (en) * | 2020-10-21 | 2021-07-30 | 深圳市宏润电子塑胶有限公司 | Automatic testing device for light-emitting uniformity of light guide plate |
| CN115219156A (en) * | 2022-07-15 | 2022-10-21 | 康佳集团股份有限公司 | Display screen detection system and display screen detection method |
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