CN113418150B - Color-switchable light source and preparation method thereof - Google Patents
Color-switchable light source and preparation method thereof Download PDFInfo
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- CN113418150B CN113418150B CN202110684893.6A CN202110684893A CN113418150B CN 113418150 B CN113418150 B CN 113418150B CN 202110684893 A CN202110684893 A CN 202110684893A CN 113418150 B CN113418150 B CN 113418150B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
Abstract
The invention discloses a color-switchable light source and a preparation method thereof. The color-switchable light source comprises a light source, wherein the light source is used for emitting light beams; the optical filtering device is positioned on the propagation path of the light beam; the light source comprises a first color light source and a second color light source, wherein the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light; the light filtering device comprises a first light filtering area and a second light filtering area, wherein the first light filtering area is used for passing the first color light, and the second light filtering area is used for passing the second color light; the first color light and the second color light are complementary color light. According to the color-switchable light source and the preparation method thereof, provided by the invention, the first color light emitted by the color-switchable light source can only be emitted from the first filtering area by utilizing the complementary color principle; the emitted second color light can only exit from the second filtering area, thereby realizing the light source with the switchable colors, which has sharp boundary, uniform brightness and continuous luminous surface of the luminous area.
Description
Technical Field
The embodiment of the invention relates to the technical field of machine vision, in particular to a color-switchable light source and a preparation method thereof.
Background
At present, in the technical fields of machine vision industry, illumination and the like, a multi-area multi-color switching light source is often needed, and although the existing light source realizes that a plurality of areas emit light with different colors independently, two defects exist in some multi-color light sources at present: 1. the boundary transition of each light-emitting area is fuzzy, namely the brightness of the boundary part of each light-emitting area is continuously reduced and uneven, and the acquired picture increases the processing difficulty of an algorithm under the illumination; 2. in order to make the boundary sharp, a physical barrier is directly added to the boundary of each light-emitting area to make the boundary of each light-emitting area transition sharp, but the boundary of each area is discontinuous because the physical barrier does not emit light, so that the corresponding transition area among a plurality of light-emitting areas is not illuminated, and black is displayed in an image, and the condition also can lead to a great discount on the effect of the shot picture.
Disclosure of Invention
The invention provides a light source with switchable colors and a preparation method thereof, which are used for realizing the light source with switchable light-emitting colors, sharp boundaries of a light-emitting area and continuous light-emitting surfaces.
In a first aspect, an embodiment of the present invention provides a color-switchable light source, including:
a light source for emitting a light beam;
a filter device located on a propagation path of the light beam;
the light source comprises a first color light source and a second color light source, wherein the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light;
the light filtering device comprises a first light filtering area and a second light filtering area, wherein the first light filtering area is used for passing first color light, and the second light filtering area is used for passing second color light;
the first color light and the second color light are complementary color light.
Optionally, the first color light source is disposed corresponding to the first filtering area, and the second color light source is disposed corresponding to the second filtering area.
Optionally, the first color light is green light, and the second color light is red light;
or the first color light is yellow light, and the second color light is purple light;
alternatively, the first color light is orange light and the second color light is blue light.
Optionally, the light filtering device comprises an integrally formed light diffusion plate, the light diffusion plate comprising a first diffusion section and a second diffusion section;
the first diffusion subsection is positioned in the first filtering area and is used for passing the first color light;
the second diffusion subsection is positioned in the second filtering area and is used for passing second color light.
Optionally, the optical filtering device includes a transmissive substrate and an optical filtering film disposed on one side of the transmissive substrate;
the filter film comprises a first color filter film and a second color filter film, the first color filter film is positioned in the first filter area, and the second color filter film is positioned in the second filter area;
or,
the optical filtering device comprises a transmission substrate and an optical filtering coating arranged on one side of the transmission substrate;
the filter coating comprises a first color filter coating and a second color filter coating, wherein the first color filter coating is positioned in the first filter region, and the second color filter coating is positioned in the second filter region.
Optionally, the transmissive substrate includes a light diffusing plate or a transparent substrate.
Optionally, the first filter regions and the second filter regions are alternately arranged along a first direction, wherein the first direction intersects with a propagation direction of the light beam.
Optionally, the first filter regions and the second filter regions are alternately arranged along a second direction, where the second direction intersects the first direction.
Optionally, the light emitting surface of the light filtering device is a plane or a curved surface.
In a second aspect, an embodiment of the present invention further provides a method for preparing a color-switchable light source, where the method includes:
preparing a light source, wherein the light source is used for emitting light beams, the light source comprises a first color light source and a second color light source, the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light;
preparing a light filtering device, wherein the light filtering device comprises a first light filtering area and a second light filtering area, the first light filtering area is used for passing first color light, the second light filtering area is used for passing second color light, and the first color light and the second color light are complementary color light;
the filter device is arranged on the propagation path of the light beam.
According to the color-switchable light source and the preparation method thereof, the light source comprises the first color light source and the second color light source, the light filtering device arranged on the light emitting side of the light source comprises the first light filtering area and the second light filtering area, the first light filtering area is used for passing through the first color light, the second light filtering area is used for passing through the second color light, the first color light and the second color light are complementary light, when the color-switchable light source emits the first color light, the first color light source is turned on, the second color light source is turned off, the first color light cannot pass through the second light filtering area at all and can only emit from the first light filtering area, and therefore the first color light is emitted by the first light filtering area; when the light source of the switchable color emits light of the second color, the light source of the second color is started, the light source of the first color is closed, the light of the second color cannot pass through the first filtering area at all and can only exit from the second filtering area, so that the light of the second color is emitted from the second filtering area.
Drawings
Fig. 1 is a schematic structural diagram of a color-switchable light source according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a switchable light source according to an embodiment of the present invention when emitting a first color light;
fig. 3 is a schematic diagram of a switchable light source according to an embodiment of the present invention when emitting a second color light;
FIG. 4 is a color wheel diagram provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a filtering device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another optical filtering device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another optical filtering device according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of another color-switchable light source according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a color-switchable light source according to an embodiment of the present invention;
fig. 10 is a schematic perspective view of a color-switchable light source according to an embodiment of the present invention;
fig. 11 is a schematic flow chart of a method for preparing a color-switchable light source according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a light source with switchable colors according to an embodiment of the present invention, fig. 2 is a schematic diagram of a light source with switchable colors according to an embodiment of the present invention when emitting light with a first color, and fig. 3 is a schematic diagram of a light source with switchable colors according to an embodiment of the present invention when emitting light with a second color, as shown in fig. 1-3, where the light source with switchable colors according to an embodiment of the present invention includes:
the light source 10, the light source 10 is used for emergent light beam.
And a filter 11, the filter 11 being located in the propagation path of the light beam.
The light source 10 includes a first color light source 101 and a second color light source 102, where the first color light source 101 is used to emit the first color light 21, and the second color light source 102 is used to emit the second color light 22. The filter device 11 comprises a first filter region 111 and a second filter region 112, the first filter region 111 being configured to pass the first color light 21, the second filter region 112 being configured to pass the second color light 22, the first color light 21 and the second color light 22 being complementary colors of light.
1-3, the light source 10 may include a plurality of circuit boards and a plurality of LED light beads, wherein the LED light beads are arranged on the circuit boards in an array, and the circuit boards may be PCB boards matched with a power supply for driving the LED light beads to emit light.
With continued reference to fig. 1-3, the light source 10 includes a first color light source 101 and a second color light source 102, the first color light source 101 is configured to emit first color light 21, the second color light source 102 is configured to emit second color light 22, and the first color light 21 and the second color light 22 are complementary colors of light. For example, the first color light source 101 may be an LED lamp bead that emits the first color light 21, the second color light source 102 may be an LED lamp bead that emits the second color light 22, and in other embodiments, the first color light source 101 and the second color light source 102 may also be two-color LED lamp beads that can emit the first color light 21 and the second color light 22 at the same time, which is not limited in the embodiments of the present invention.
The complementary color light means that white light can be formed after the first color light 21 and the second color light 22 are added, and the complementary color light can form a blocking effect.
With continued reference to fig. 1-3, the filter means 11 is located at the light emitting side of the light source 10, the filter means 11 comprising a first filter area 111 for passing the first color light 21, i.e. the first filter area 111 for filtering out light other than the first color light 21, and a second filter area 112 for passing the second color light 22, i.e. the second filter area 112 for filtering out light other than the second color light 22.
As shown in fig. 2, when the switchable color light source emits the first color light 21, the first color light source 101 is turned on, the second color light source 102 is turned off, and since the first color light 21 and the second color light 22 are complementary colors, the first color light 21 cannot pass through the second filter region 112 at all, and at this time, the first color light 21 is emitted from the first filter region 111 only, so that the first filter region 111 emits the first color light 21, and the boundary of the light emitting region is sharp and uniform in brightness. Similarly, when the switchable light source emits the second color light 22, the second color light source 102 is turned on, the first color light source 101 is turned off, and the first color light 21 and the second color light 22 are complementary colors, so that the second color light 22 cannot pass through the first filter region 111 at all, and at this time, the second color light 22 only exits from the second filter region 112, thereby realizing that the second filter region 112 emits the second color light 22, and the boundary of the light emitting region is sharp and uniform in brightness. Meanwhile, the physical barrier is not required to be added to the color-switchable light source, so that the boundaries of the first filtering area 111 and the second filtering area 112 are continuous, and therefore, when the color-switchable light source is used for workpiece detection, the material areas corresponding to the color-switchable light source can be illuminated, and the risk of omission is reduced.
According to the color-switchable light source provided by the embodiment of the invention, the light source 10 comprises the first color light source 101 and the second color light source 102, the light filtering device 11 positioned on the light emitting side of the light source 10 comprises the first light filtering area 111 and the second light filtering area 112, the first light filtering area 111 is used for passing through the first color light 21, the second light filtering area 112 is used for passing through the second color light 22, the first color light 21 and the second color light 22 are complementary colors, so that when the color-switchable light source emits the first color light 21, the first color light source 101 is turned on, the second color light source 102 is turned off, the first color light 21 cannot pass through the second light filtering area 112 at all, and only can be emitted from the first light filtering area 111, and therefore the first color light 21 emitted by the first light filtering area 111 is realized; when the light source with the switchable color emits the second color light 22, the second color light source 102 is turned on, the first color light source 101 is turned off, the second color light 22 cannot pass through the first filtering area 111 at all and can only exit from the second filtering area 112, so that the second filtering area 112 emits the second color light 22.
With continued reference to fig. 1-3, optionally, the first color light source 101 is disposed corresponding to the first filter region 111 and the second color light source 102 is disposed corresponding to the second filter region 112.
Specifically, as shown in fig. 1-3, in this embodiment, the first color light source 101 is disposed corresponding to the first filtering area 111, so that most of the first color light 21 emitted from the first color light source 101 is emitted through the first filtering area 111, and the first color light 21 filtered by the second filtering area 112 is reduced, so as to improve the utilization rate of the first color light 21. Similarly, by arranging the second color light source 102 and the second filtering area 112 correspondingly, most of the second color light 22 emitted by the second color light source 102 is emitted through the second filtering area 112, so that the second color light 22 filtered by the first color light source 101 is reduced, and the utilization rate of the second color light 22 is improved.
It should be noted that, the arrangement of the first color light source 101 corresponding to the first filter region 111 means that the first color light source 101 at least partially overlaps the first filter region 111 along the emitting direction of the first color light 21, and optionally, along the emitting direction of the first color light 21, the first color light source 101 is located in the first filter region 111, so as to further improve the utilization rate of the first color light 21. Similarly, the arrangement of the second color light source 102 corresponding to the second filtering area 112 means that the second color light source 102 at least partially overlaps the second filtering area 112 along the emitting direction of the second color light 22, and optionally, along the emitting direction of the second color light 22, the second color light source 102 is located in the second filtering area 112, so as to further improve the utilization rate of the second color light 22.
Optionally, the first color light 21 is green light, and the second color light 22 is red light; alternatively, the first color light 21 is yellow light and the second color light 22 is violet light; alternatively, the first color light 21 is orange light and the second color light 22 is blue light.
Specifically, fig. 4 is a color ring diagram provided by the embodiment of the present invention, as shown in fig. 4, after the colors of the two end points of the diameter of the color ring are superimposed, white or gray can be formed, that is, the colors of the two end points of the diameter of the color ring are complementary colors. In the present embodiment, the first color light 21 is set to be green light, and the second color light 22 is set to be red light; alternatively, the first color light 21 is yellow light and the second color light 22 is violet light; alternatively, the first color light 21 is orange light, the second color light 22 is blue light, and the first color light 21 and the second color light 22 are complementary colors, so that when the light source with switchable colors emits the first color light 21, the first color light 21 cannot pass through the second filter region 112 at all, and can only be emitted from the first filter region 111, and the first filter region 111 emits the first color light 21; when the light source with switchable color emits the second color light 22, the second color light 22 cannot pass through the first filter region 111 at all, and can only be emitted from the second filter region 112, so that the second filter region 112 emits the second color light 22, and the boundary of the light emitting region is sharp and the brightness is uniform.
It should be noted that the first color light 21 and the second color light 22 are not limited to the above-mentioned color light combination, and in other embodiments, a person skilled in the art may apply to the first color light 21 and the second color light 22 according to actual needs, as shown in fig. 4, for example, the first color light 21 may be orange color light, the second color light 22 may be blue-violet color light, etc., so long as the first color light 21 and the second color light 22 are complementary colors, which is not limited in the embodiments of the present invention.
Fig. 5 is a schematic structural diagram of a light filtering device according to an embodiment of the present invention, as shown in fig. 5, optionally, the light filtering device 11 includes an integrally formed light diffusion plate 31, the light diffusion plate 31 includes a first diffusion part 311 and a second diffusion part 312, the first diffusion part 311 is located in the first light filtering area 111, the first diffusion part 311 is used for passing the first color light 21, the second diffusion part 311 is located in the second light filtering area 112, and the second diffusion part 311 is used for passing the second color light 22.
As shown in fig. 5, the light filtering device 11 includes an integrally formed light diffusion plate 31, where the light diffusion plate 31 includes a first diffusion part 311 located in the first filtering area 111 and a second diffusion part 312 located in the second filtering area 112, where the first diffusion part 311 is used to pass through the first color light 21, and the second diffusion part 311 is used to pass through the second color light 22, and the embodiment uses the integrally formed light diffusion plate 31 by setting the light filtering device 11, so that the production process can be reduced, the production efficiency can be improved, the cost can be reduced, and the firmness of the light filtering device 11 can be enhanced.
Fig. 6 is a schematic structural diagram of another optical filtering device according to an embodiment of the present invention, as shown in fig. 6, optionally, the optical filtering device 11 includes a transmissive substrate 41 and an optical filtering film 42 disposed on one side of the transmissive substrate 41, the optical filtering film 42 includes a first color optical filtering film 421 and a second color optical filtering film 422, the first color optical filtering film 421 is located in the first optical filtering area 111, and the second color optical filtering film 422 is located in the second optical filtering area 112.
As shown in fig. 6, in this embodiment, by attaching the first color filter film 421 for passing the first color light 21 and the second color filter film 422 for passing the second color light 22 on the side of the transmission substrate 41, the first color filter film 421 is located in the first filter area 111, and the second color filter film 422 is located in the second filter area 112, the production process is simple, the cost is low, and the implementation is easy while the filtering function is implemented.
Fig. 7 is a schematic structural diagram of another optical filtering device according to an embodiment of the present invention, as shown in fig. 7, optionally, the optical filtering device 11 includes a transmissive substrate 41 and an optical filtering coating 43 disposed on one side of the transmissive substrate 41, the optical filtering coating 43 includes a first color optical filtering coating 431 and a second color optical filtering coating 432, the first color optical filtering coating 431 is located in the first optical filtering area 111, and the second color optical filtering coating 432 is located in the second optical filtering area 112.
As shown in fig. 7, in this embodiment, by coating the first color filter coating 431 for passing the first color light 21 and the second color filter coating 432 for passing the second color light 22 on the side of the transmission substrate 41, the first color filter coating 431 is located in the first filter region 111, and the second color filter coating 432 is located in the second filter region 112, the production process is simple, the cost is low, and the implementation is easy while the filter function is implemented.
Alternatively, the transmissive substrate 41 includes a light diffusion plate or a transparent substrate.
The light diffusion plate may be composed of a transparent base material and a plurality of particles dispersed in the base material, and the particles dispersed in the base material may diffuse light incident on the light diffusion plate due to a difference in refractive index of light with respect to a wavelength of a visible light region from the base material, and the light diffusion plate may be used by providing the transmission substrate 41, so that the light source of switchable color may have uniform light emission luminance.
In other embodiments, the transparent substrate 41 may also be used as a transparent substrate to reduce attenuation of light and improve light utilization, so as to improve illumination brightness of the color-switchable light source.
Fig. 8 is a schematic structural diagram of another color-switchable light source according to an embodiment of the present invention, as shown in fig. 1-3 and fig. 8, optionally, the first filter regions 111 and the second filter regions 112 are alternately arranged along a first direction X, where the first direction X intersects with a propagation direction Y of the light beam.
Specifically, as shown in fig. 1 to 3 and fig. 8, the first filter regions 111 and the second filter regions 112 are alternately arranged along the first direction X, so as to improve the consistency of the illumination regions of the first color light 21 and the illumination regions of the second color light 22, thereby helping to improve the illumination effect.
The first direction X may be set according to actual requirements, for example, the first direction X is set to be perpendicular to the propagation direction Y of the light beam, where the propagation direction Y of the light beam is the illumination direction of the light source capable of switching colors, which is not limited in the embodiment of the present invention.
Fig. 9 is a schematic structural diagram of another color-switchable light source according to an embodiment of the present invention, and fig. 10 is a schematic structural diagram of a color-switchable light source according to an embodiment of the present invention, as shown in fig. 9 and 10, optionally, first filter regions 111 and second filter regions 112 are alternately arranged along a second direction Z, where the second direction Z intersects the first direction X.
Specifically, as shown in fig. 9 and 10, by providing the first filter regions 111 and the second filter regions 112 alternately arranged along the second direction Z, the uniformity of the illumination regions of the first color light 21 and the illumination regions of the second color light 22 can be further improved, thereby further improving the illumination effect.
The second direction Z may be set according to actual requirements, for example, the second direction Z is set to be perpendicular to the first direction X, which is not limited in the embodiment of the present invention.
With continued reference to fig. 8-10, the light emitting surface of the filter device 11 may alternatively be planar or curved.
The light emitting surface of the light filtering device 11 may be a plane or a curved surface, so that the light source with switchable colors has high applicability and can be widely applied to light sources with planar or curved light emitting surfaces, such as a multi-angle strip light source, a multi-area surface light source, a multi-angle annular light source, a multi-area coaxial light source, a multi-angle arch light source, a multi-angle sphere integral light source, and the like.
It should be noted that, a person skilled in the art may also set other functional modules of the light source with switchable colors according to actual needs, for example, a heat dissipating device is disposed near the light source 10, and the heat dissipating device may use one or more heat dissipating fans, which is not limited in this embodiment of the present invention.
According to the color-switchable light source provided by the embodiment of the invention, the light source 10 comprises the first color light source 101 and the second color light source 102, the light filtering device 11 positioned on the light emitting side of the light source 10 comprises the first light filtering area 111 and the second light filtering area 112, the first light filtering area 111 is used for passing through the first color light 21, the second light filtering area 112 is used for passing through the second color light 22, the first color light 21 and the second color light 22 are complementary colors, and when the color-switchable light source emits the first color light 21 by utilizing the complementary color principle, the first color light 21 cannot pass through the second light filtering area 112 at all and can only be emitted from the first light filtering area 111; when the light source of the switchable color emits the second color light 22, the second color light 22 cannot pass through the first filter region 111 at all, and can only exit from the second filter region 112, so that the first color light 21 and the second color light 22 are switched. The color-switchable light source realizes a plurality of independently controlled light-emitting areas, the light-emitting areas are in seamless connection, the boundary transition of the light-emitting areas is sharp, the color-switchable light source is suitable for multi-angle defect detection of a high-reflection surface, and meanwhile, the color-switchable light source is low in design complexity, low in cost and easy to realize.
Based on the same inventive concept, the embodiment of the present invention further provides a method for preparing a light source with switchable colors, which is used for preparing any one of the light sources with switchable colors provided in the above embodiment, the same or corresponding structure and terms as those of the above embodiment are not described herein, and fig. 11 is a schematic flow chart of a method for preparing a light source with switchable colors provided in the embodiment of the present invention, as shown in fig. 11, and the method includes the following steps:
step 110, preparing a light source, wherein the light source is used for emitting light beams, the light source comprises a first color light source and a second color light source, the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light.
The light source can comprise a plurality of circuit boards and a plurality of LED lamp beads, the LED lamp beads are arranged on the circuit boards in an array mode, the circuit boards can be PCB boards, and the PCB boards are matched with a power supply and used for driving the LED lamp beads to emit light. The first color light source may be an LED light bead that emits light of a first color, the second color light source may be an LED light bead that emits light of a second color, and in other embodiments, the first color light source and the second color light source may also be two-color light beads that can emit light of the first color and light of the second color at the same time, which is not limited in the embodiments of the present invention.
Step 120, preparing a light filtering device, wherein the light filtering device comprises a first light filtering area and a second light filtering area, the first light filtering area is used for passing through first color light, the second light filtering area is used for passing through second color light, and the first color light and the second color light are complementary color light.
Wherein the first filter region is for passing the first color light, i.e. the first filter region is for filtering out light other than the first color light, and the second filter region is for passing the second color light, i.e. the second filter region is for filtering out light other than the second color light.
And 130, arranging the light filtering device on the propagation path of the light beam.
The light filtering device is arranged on the light emitting side of the light source, and the first color light and the second color light are complementary color light, so that the effect of blocking each other can be formed, when the light source with the switchable color emits the first color light, the first color light cannot pass through the second light filtering area at all, and at the moment, the first color light only exits from the first light filtering area, so that the first light filtering area emits the first color light, and the boundary of the light emitting area is sharp and uniform in brightness. Similarly, when the light source with the switchable color emits the second color light, the second color light cannot pass through the first filtering area at all, and at this time, the second color light only exits from the second filtering area, so that the second filtering area emits the second color light, and the boundary of the light emitting area is sharp and uniform in brightness. Meanwhile, the physical barrier is not required to be added to the light source with the switchable color, so that the boundaries of the first light filtering area and the second light filtering area are continuous, the material areas corresponding to the light source with the switchable color can be illuminated, and the risk of omission is reduced.
It should be noted that the order of the steps 110 and 120 is not limited, and in other embodiments, the steps 120 may be performed before the steps 110, and in other embodiments, the steps 110 and 120 may be performed simultaneously, and those skilled in the art may set the order according to the actual requirements.
It should be noted that, before the step 110 and the step 120, the light source with switchable colors may also be designed.
Illustratively, the designing of the switchable color light source includes:
1. the project situation is clear, and the design requirement of the light source with switchable colors is clear.
The design requirements of the switchable colors include the appearance size, power, total size of the light emitting surface and total number of light emitting areas N (N > 1) of the switchable colors, and the shape, length, width, radius, area and the like of each light emitting area.
2. The light source is designed to switch colors.
Wherein designing a color switchable light source may comprise:
the arrangement and the channel number of LED lamp beads in the light source capable of switching colors are designed to realize N luminous areas.
Each light-emitting area on the light-emitting surface of the light source with switchable colors is designed.
The light source luminous surface with switchable colors is divided and complementary color distribution is planned, so that the purposes of sharp boundary of a luminous area and continuous luminous surface are realized.
Other parts such as a light source structure, appearance, heat dissipation and the like with switchable colors are designed.
3. The color-switchable light source is processed and fabricated.
Wherein, the processing and manufacturing of the light source with switchable colors is the steps 110-130.
Illustratively, the processing and fabricating a switchable color light source may further include:
and finishing the processes of lamp bead welding, pasting a filter film with complementary colors on the surface of the transmission substrate to form a filter device, assembling a color-switchable light source structure and the like according to the drawing.
In other embodiments, the filtering device may also be a direct-machined complementary color light emitting plate or a spray-coated complementary color light emitting plate, which can be set by those skilled in the art according to actual requirements.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. The color-switchable light source is characterized by comprising a multi-angle strip light source, a multi-area surface light source, a multi-angle annular light source, a multi-area coaxial light source, a multi-angle arched light source or a multi-angle sphere integral light source in machine vision imaging, which are used for illuminating a material area;
the color switchable light source comprises:
a light source for emitting a light beam;
a filter device located on a propagation path of the light beam;
the light source only comprises a first color light source and a second color light source, wherein the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light;
the light filtering device only comprises a first light filtering area and a second light filtering area, and no physical barrier is needed to be added between the first light filtering area and the second light filtering area, so that the boundaries of the first light filtering area and the second light filtering area are continuous, and the material areas corresponding to the light sources with switchable colors can be illuminated;
the first filter region is used for passing the first color light, and the second filter region is used for passing the second color light;
the first color light and the second color light are complementary color light such that the first color light cannot pass through the second filter region and the second color light cannot pass through the first filter region;
the light filtering device comprises an integrally formed light diffusion plate, wherein the light diffusion plate comprises a first diffusion subsection and a second diffusion subsection; the first diffusion subsection is positioned in the first filtering area and is used for passing the first color light; the second diffusion subsection is positioned in the second filtering area and is used for passing second color light;
or,
the optical filtering device comprises a transmission substrate and an optical filtering film arranged on one side of the transmission substrate; the filter film comprises a first color filter film and a second color filter film, the first color filter film is positioned in the first filter area, and the second color filter film is positioned in the second filter area;
or,
the optical filtering device comprises a transmission substrate and an optical filtering coating arranged on one side of the transmission substrate; the filter coating comprises a first color filter coating and a second color filter coating, wherein the first color filter coating is positioned in the first filter region, and the second color filter coating is positioned in the second filter region.
2. The switchable color light source of claim 1 wherein,
the first color light source is arranged corresponding to the first filtering area, and the second color light source is arranged corresponding to the second filtering area.
3. The switchable color light source of claim 1 wherein,
the first color light is green light, and the second color light is red light;
or the first color light is yellow light, and the second color light is purple light;
alternatively, the first color light is orange light and the second color light is blue light.
4. The switchable color light source of claim 1 wherein,
the transmissive substrate includes a light diffusion plate or a transparent substrate.
5. The switchable color light source of claim 1 wherein,
the first filter regions and the second filter regions are alternately arranged along a first direction, wherein the first direction intersects a propagation direction of the light beam.
6. The switchable color light source of claim 5 wherein,
the first filter regions and the second filter regions are alternately arranged along a second direction, wherein the second direction intersects the first direction.
7. The switchable color light source of claim 1 wherein,
the luminous surface of the light filtering device is a plane or a curved surface.
8. The preparation method of the color-switchable light source is characterized in that the color-switchable light source comprises a multi-angle strip light source, a multi-region area light source, a multi-angle annular light source, a multi-region coaxial light source, a multi-angle arched light source or a multi-angle sphere integral light source in machine vision imaging, and is used for illuminating a material region;
the preparation method of the color-switchable light source comprises the following steps:
preparing a light source, wherein the light source is used for emitting light beams, the light source only comprises a first color light source and a second color light source, the first color light source is used for emitting first color light, and the second color light source is used for emitting second color light;
preparing a light filtering device, wherein the light filtering device only comprises a first light filtering area and a second light filtering area, no physical barrier is needed to be added between the first light filtering area and the second light filtering area, so that the boundaries of the first light filtering area and the second light filtering area are continuous, the material areas corresponding to the light sources with switchable colors can be illuminated, the first light filtering area is used for passing first color light, the second light filtering area is used for passing second color light, the first color light and the second color light are complementary color light, and the first color light cannot pass through the second light filtering area, and the second color light cannot pass through the first light filtering area;
the light filtering device comprises an integrally formed light diffusion plate, wherein the light diffusion plate comprises a first diffusion subsection and a second diffusion subsection; the first diffusion subsection is positioned in the first filtering area and is used for passing the first color light; the second diffusion subsection is positioned in the second filtering area and is used for passing second color light;
or,
the optical filtering device comprises a transmission substrate and an optical filtering film arranged on one side of the transmission substrate; the filter film comprises a first color filter film and a second color filter film, the first color filter film is positioned in the first filter area, and the second color filter film is positioned in the second filter area;
or,
the optical filtering device comprises a transmission substrate and an optical filtering coating arranged on one side of the transmission substrate; the filter coating comprises a first color filter coating and a second color filter coating, the first color filter coating is positioned in the first filter area, and the second color filter coating is positioned in the second filter area;
the filter device is arranged on the propagation path of the light beam.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684893.6A CN113418150B (en) | 2021-06-21 | 2021-06-21 | Color-switchable light source and preparation method thereof |
| PCT/CN2022/086981 WO2022267643A1 (en) | 2021-06-21 | 2022-04-15 | Color-switchable light source and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110684893.6A CN113418150B (en) | 2021-06-21 | 2021-06-21 | Color-switchable light source and preparation method thereof |
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| CN113418150B true CN113418150B (en) | 2023-12-05 |
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| WO (1) | WO2022267643A1 (en) |
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| JP2000331502A (en) * | 1999-05-21 | 2000-11-30 | Chitose Denki Kk | Portable guide light |
| CN101501558A (en) * | 2006-08-09 | 2009-08-05 | 夏普株式会社 | Liquid crystal display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022267643A1 (en) | 2022-12-29 |
| CN113418150A (en) | 2021-09-21 |
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