CN215647020U - Ultraviolet image acquisition device and ultraviolet imaging device - Google Patents
Ultraviolet image acquisition device and ultraviolet imaging device Download PDFInfo
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- CN215647020U CN215647020U CN202121779633.9U CN202121779633U CN215647020U CN 215647020 U CN215647020 U CN 215647020U CN 202121779633 U CN202121779633 U CN 202121779633U CN 215647020 U CN215647020 U CN 215647020U
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Abstract
The utility model provides an ultraviolet image acquisition device and an ultraviolet imaging device, wherein the ultraviolet image acquisition device comprises: the light filtering unit is used for filtering incident light to obtain a target light beam, and is a band-pass light filtering unit, and the light transmitting wave band of the light filtering unit is an ultraviolet UVA wave band and an ultraviolet UVB wave band; the beam splitting unit is used for receiving the target light beam, transmitting and reflecting the target light beam to obtain a transmitted light beam and a reflected light beam, wherein the transmitted light beam is a UVA light beam, and the reflected light beam is a UVB light beam, or the transmitted light beam is a UVB light beam, and the reflected light beam is a UVA light beam; a first image sensor for receiving the transmitted beam; a second image sensor for receiving the reflected light beam. Through the device, the sun protection effects of the UVA sun-screening agent and the UVB sun-screening agent in the sun-screening cream can be accurately and respectively displayed.
Description
Technical Field
The application relates to the technical field of figure acquisition, in particular to an ultraviolet image acquisition device and an ultraviolet imaging device.
Background
Ultraviolet imaging is currently used more and more widely as a new imaging technology. For example, in the field of sun protection, the sun protection effect of sun protection creams can be observed by UV imaging. Specifically, most sunscreen creams in the market are added with a chemical sunscreen agent, and the chemical sunscreen agent has the characteristic of absorbing ultraviolet rays, so that the chemical sunscreen cream appears dark under an ultraviolet image, and whether the sunscreen cream is effective or not can be judged according to the shade of the color of the sunscreen cream in the ultraviolet image. However, the sunscreen agents in the sunscreen cream are generally classified into UVA sunscreen agents for the UVA ultraviolet band and UVB sunscreen agents for the UVB ultraviolet band, and the ultraviolet image capturing technology in the prior art does not distinguish the ultraviolet band, so that the sunscreen effects of the UVA sunscreen agents and the UVB sunscreen agents cannot be accurately displayed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the sunscreen effects of a UVA sunscreen and a UVB sunscreen cannot be accurately and respectively displayed, an embodiment of the present invention provides an ultraviolet image capturing device, including: the light filtering unit is used for filtering incident light to obtain a target light beam, and is a band-pass light filtering unit, and the light transmitting wave band of the light filtering unit is an ultraviolet UVA wave band and an ultraviolet UVB wave band; the beam splitting unit is used for receiving the target light beam, transmitting and reflecting the target light beam to obtain a transmitted light beam and a reflected light beam, wherein the transmitted light beam is a UVA light beam, and the reflected light beam is a UVB light beam, or the transmitted light beam is a UVB light beam, and the reflected light beam is a UVA light beam; a first image sensor for receiving the transmitted beam; a second image sensor for receiving the reflected light beam.
As a preferred technical solution, the light splitting unit includes: the surface of the planar lens and the incident direction of the target light beam form an included angle which is a preset angle; the light splitting film is arranged on the planar lens, and the light splitting film penetrates through an ultraviolet UVA wave band and reflects an ultraviolet UVB wave band, or penetrates through the ultraviolet UVB wave band and reflects the ultraviolet UVA wave band.
As a preferred technical solution, the apparatus further includes: the beam splitting film is arranged on the plane lens close to one surface of the light filtering unit, and the beam splitting unit further comprises: and the antireflection film is arranged on one surface of the planar lens, which is far away from the light filtering unit, and corresponds to the antireflection film for transmitting the light beam.
As a preferred technical solution, the light splitting unit includes: the device comprises a first triangular prism and a second triangular prism which are spliced with each other, wherein the incident surface of the target light beam is positioned on the first triangular prism, and the emergent surface of the transmission light beam is positioned on the second triangular prism; the splitting film is arranged on the splicing surface of the first triangular prism and the second triangular prism, and the included angle between the splicing surface and the target light beam is a preset included angle.
As a preferred technical solution, the light splitting unit further includes: and the antireflection film is arranged on the emergent surface of the transmitted light beam on the second triangular prism and corresponds to the antireflection film of the transmitted light beam.
Preferably, the first image sensor and the second image sensor are disposed on the same plane.
As a preferred technical solution, the apparatus further includes: a mirror to reflect the reflected beam to the second image sensor.
As a preferred technical solution, the apparatus further includes: and the focusing unit is arranged between the light splitting unit and the reflecting mirror or between the reflecting mirror and the second image sensor.
An embodiment of the present invention provides an ultraviolet imaging apparatus, including: the ultraviolet image acquisition device; and the image processing unit is used for processing the electric signals acquired by the ultraviolet image acquisition device to obtain an ultraviolet image.
As a preferred technical solution, the apparatus further includes: the light supplement unit is used for emitting ultraviolet UVA waveband light and/or ultraviolet UVB waveband light, and the light supplement direction of the light supplement unit is the same as the image acquisition direction of the ultraviolet image acquisition device.
In the above embodiment, the light filtering unit makes the transmitted target light beam only include ultraviolet UVA band light and ultraviolet UVB band light, the light splitting unit divides the target light beam into a beam of ultraviolet UVA band light and a beam of ultraviolet UVB band light, and the first image sensor and the second image sensor respectively collect two beams of light, so as to respectively obtain image information of the ultraviolet UVA band light and image information of the ultraviolet UVB band light. In practical application scenes, the device can accurately and respectively display the sun-blocking effects of the UVA sun-blocking agent and the UVB sun-blocking agent in sun-blocking cream, and further, the device enables equipment assembled with the device to obtain respectively displayed ultraviolet UVA wave band light images and ultraviolet UVB wave band light images through only one lens, so that the space of the equipment is saved.
Drawings
FIG. 1 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 2 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 3 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 4 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 5 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 6 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 7 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 8 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
FIG. 9 shows a schematic view of an ultraviolet image capture device in accordance with an embodiment of the present invention;
wherein the figures include the following reference numerals:
101. a light filtering unit; 102. a light splitting unit; 103. a first image sensor; 104. a second image sensor; 201. a planar lens; 202. a light splitting film; 301. an anti-reflection film; 401. a first triangular prism; 402. a second triangular prism; 601. a reflection light beam antireflection film; 701. a mirror; 801. a focusing unit.
Detailed Description
The technical solution in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Example 1
As shown in fig. 1 to 9, an ultraviolet image capturing device specifically includes: the light filtering unit is used for filtering incident light to obtain a target light beam, and is a band-pass light filtering unit, and the light transmitting wave band of the light filtering unit is an ultraviolet UVA wave band and an ultraviolet UVB wave band; the beam splitting unit is used for receiving the target light beam, transmitting and reflecting the target light beam to obtain a transmitted light beam and a reflected light beam, wherein the transmitted light beam is a UVA light beam, and the reflected light beam is a UVB light beam, or the transmitted light beam is a UVB light beam, and the reflected light beam is a UVA light beam; a first image sensor for receiving the transmitted beam; a second image sensor for receiving the reflected light beam.
The filter unit may be a filter or a filter film coated on the optical lens. In the prior art, it is generally considered that the electronic wave with a wavelength in the range of 320nm to 420nm is an ultraviolet UVA band, and the electronic wave with a wavelength in the range of 275nm to 320nm is an ultraviolet UVB band, so the light transmission range of the filtering unit can be 275nm and 420 nm. However, since the above range is only a range set manually, if the light transmission range of the filtering unit is within the above wavelength band range, or includes the above wavelength band, or partially coincides with the above wavelength band, as long as the purpose is to transmit the ultraviolet light in the UVA band and the ultraviolet light in the UVB band and filter other wavelength bands, the filtering unit should be "a band-pass filtering unit whose transmission wavelength band is the ultraviolet UVA band and the ultraviolet UVB band" described in this embodiment. The light splitting unit can be a dichroic mirror, which is also called as a dichroic mirror, and is characterized in that the light splitting unit almost completely transmits light with certain wavelength and almost completely reflects light with other wavelengths. That is, the spectroscopic unit may be almost completely transparent to the ultraviolet UVA band light and almost completely reflective to the ultraviolet UVB band light, or almost completely transparent to the ultraviolet UVB band light and almost completely reflective to the ultraviolet UVA band light. The first image sensor and the second image sensor can be ultraviolet CMOS image sensors or ultraviolet CCD image sensors and comprise ultraviolet band-pass filter layers and image acquisition layers.
Optionally, as shown in fig. 2, the light splitting unit includes: the surface of the planar lens and the incident direction of the target light beam form an included angle which is a preset angle; the light splitting film is arranged on the planar lens, and the light splitting film penetrates through an ultraviolet UVA wave band and reflects an ultraviolet UVB wave band, or penetrates through the ultraviolet UVB wave band and reflects the ultraviolet UVA wave band.
It should be noted that the preset angle is preferably 45 degrees, but in practical applications, the preset angle may be set correspondingly according to the internal structure of the product. The above-mentioned light splitting film, if limited by the process, cannot completely transmit the ultraviolet UVA band, reflect the ultraviolet UVB band, or transmit the ultraviolet UVB band and reflect the ultraviolet UVA band, but as long as it mainly transmits the ultraviolet UVA band, reflects the ultraviolet UVB band, or mainly transmits the ultraviolet UVB band and reflects the ultraviolet UVA band, all belong to the "light splitting film transmits the ultraviolet UVA band and reflects the ultraviolet UVB band" described in the above embodiments.
Optionally, as shown in fig. 3, the apparatus further includes: the beam splitting film is arranged on the plane lens close to one surface of the light filtering unit, and the beam splitting unit further comprises: and the antireflection film is arranged on one surface of the planar lens, which is far away from the light filtering unit, and corresponds to the antireflection film for transmitting the light beam.
The antireflection film is formed by determining the thickness of a film according to the wavelength of target light and the refractive index of a film material according to the film interference principle, so that the transmission of the light is enhanced and the reflection of the light is reduced when the light passes through the film. In the above embodiment, the reflection loss of the transmitted light when it exits the plane lens surface can be reduced. The above-mentioned "antireflection film corresponding to the transmitted light beam" means: when the transmitted light beam is ultraviolet UVA light, the antireflection film is an antireflection film corresponding to an ultraviolet UVA wave band, and when the transmitted light beam is ultraviolet UVB light, the antireflection film is an antireflection film corresponding to an ultraviolet UVB wave band.
Optionally, as shown in fig. 4, the light splitting unit includes: the device comprises a first triangular prism and a second triangular prism which are spliced with each other, wherein the incident surface of the target light beam is positioned on the first triangular prism, and the emergent surface of the transmission light beam is positioned on the second triangular prism; the splitting film is arranged on the splicing surface of the first triangular prism and the second triangular prism, and the included angle between the splicing surface and the target light beam is a preset included angle.
The first triangular prism and the second triangular prism may be prisms having equilateral triangle sections, or isosceles right triangle prisms. The predetermined angle is preferably 45 degrees.
Optionally, as shown in fig. 5, the light splitting unit further includes: and the antireflection film is arranged on the emergent surface of the transmitted light beam on the second triangular prism and corresponds to the antireflection film of the transmitted light beam.
It should be noted that, if the light splitting unit is in the form of a planar lens and a light splitting film, the reflected light beam is directly reflected on the surface of the light splitting film and does not pass through the planar lens, but in the above embodiment including the first triangular prism and the second triangular prism which are spliced with each other, after the reflected light beam is reflected by the light splitting film, the reflected light beam propagates through the first triangular prism and exits from the surface thereof, and therefore, there is a reflection loss when the reflected light beam exits from the surface of the first triangular prism. Based on this, as shown in fig. 6, a reflected light beam antireflection film may be provided on the reflected light beam outgoing surface of the first triangular prism to reduce reflection loss.
Optionally, as shown in fig. 7, the first image sensor and the second image sensor are disposed on the same plane.
It should be noted that, by disposing the first image sensor and the second image sensor on the same plane, the thickness of the whole device can be effectively reduced.
Optionally, as shown in fig. 7, the apparatus further includes: a mirror to reflect the reflected beam to the second image sensor.
It should be noted that, since the first image sensor and the second image sensor are disposed on the same plane, the reflected light beam does not directly irradiate the second image sensor, and the above-mentioned mirror is further disposed in the apparatus in order to enable the second image sensor to receive the reflected light beam.
Optionally, as shown in fig. 8 and 9, the apparatus further includes: and the focusing unit is arranged between the light splitting unit and the reflecting mirror or between the light reflecting unit and the second image sensor.
In the above embodiment, the first image sensor and the second image sensor are disposed on the same plane, and the optical path is reflected by the mirror, so that the optical path through which the reflected light beam propagates to the second image sensor is longer than the optical path through which the transmitted light beam propagates to the first image sensor, and further, the focal lengths corresponding to the two image sensors are different, so that the two image sensors cannot obtain clear images at the same time. Therefore, a focusing unit is added in the device to make the focal lengths corresponding to the two image sensors the same. The focusing unit may be disposed between the light reflecting unit and the second image sensor as shown in fig. 8, or may be disposed between the light splitting unit and the reflecting mirror as shown in fig. 9, that is, disposed on the optical path between the light splitting unit and the second image sensor.
Example 2
An ultraviolet imaging apparatus, the apparatus comprising: the ultraviolet image acquisition device described in example 1; and the image processing unit is used for processing the electric signals acquired by the ultraviolet image acquisition device to obtain an ultraviolet image.
It should be noted that the ultraviolet imaging device may be a mobile display device such as a mobile phone and a tablet computer, or an external device applied to a mobile display device such as a mobile phone and a tablet computer. The device is provided with the camera, and due to the arrangement of the ultraviolet image acquisition device in the embodiment 1, the device can respectively obtain an ultraviolet UVA wave band light image and an ultraviolet UVB wave band light image only by arranging one camera corresponding to ultraviolet outside.
Optionally, the apparatus further comprises: the light supplement unit is used for emitting ultraviolet UVA waveband light and/or ultraviolet UVB waveband light, and the light supplement direction of the light supplement unit is the same as the image acquisition direction of the ultraviolet image acquisition device.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ultraviolet image acquisition device, characterized in that the device comprises:
the light filtering unit is used for filtering incident light to obtain a target light beam, and is a band-pass light filtering unit, and the light transmitting wave band of the light filtering unit is an ultraviolet UVA wave band and an ultraviolet UVB wave band;
the beam splitting unit is used for receiving the target light beam, transmitting and reflecting the target light beam to obtain a transmitted light beam and a reflected light beam, wherein the transmitted light beam is a UVA light beam, and the reflected light beam is a UVB light beam, or the transmitted light beam is a UVB light beam, and the reflected light beam is a UVA light beam;
a first image sensor for receiving the transmitted beam;
a second image sensor for receiving the reflected light beam.
2. The apparatus of claim 1, wherein the light splitting unit comprises:
the surface of the planar lens and the incident direction of the target light beam form an included angle which is a preset angle;
the light splitting film is arranged on the planar lens, and the light splitting film penetrates through an ultraviolet UVA wave band and reflects an ultraviolet UVB wave band, or penetrates through the ultraviolet UVB wave band and reflects the ultraviolet UVA wave band.
3. The apparatus of claim 2, further comprising: the beam splitting film is arranged on the plane lens close to one surface of the light filtering unit, and the beam splitting unit further comprises:
and the antireflection film is arranged on one surface of the planar lens, which is far away from the light filtering unit, and corresponds to the antireflection film for transmitting the light beam.
4. The apparatus of claim 1, wherein the light splitting unit comprises:
the device comprises a first triangular prism and a second triangular prism which are spliced with each other, wherein the incident surface of the target light beam is positioned on the first triangular prism, and the emergent surface of the transmission light beam is positioned on the second triangular prism;
the splitting film is arranged on the splicing surface of the first triangular prism and the second triangular prism, and the included angle between the splicing surface and the target light beam is a preset included angle.
5. The apparatus of claim 4, wherein the light splitting unit further comprises:
and the antireflection film is arranged on the emergent surface of the transmitted light beam on the second triangular prism and corresponds to the antireflection film of the transmitted light beam.
6. The apparatus of any of claims 1-5, wherein the first image sensor and the second image sensor are disposed in a same plane.
7. The apparatus of claim 6, further comprising:
a mirror to reflect the reflected beam to the second image sensor.
8. The apparatus of claim 7, further comprising:
and the focusing unit is arranged between the light splitting unit and the reflecting mirror or between the reflecting mirror and the second image sensor.
9. An ultraviolet imaging apparatus, comprising:
the ultraviolet image capturing device of any one of claims 1 to 8;
and the image processing unit is used for processing the electric signals acquired by the ultraviolet image acquisition device to obtain an ultraviolet image.
10. The apparatus of claim 9, further comprising:
the light supplement unit is used for emitting ultraviolet UVA waveband light and/or ultraviolet UVB waveband light, and the light supplement direction of the light supplement unit is the same as the image acquisition direction of the ultraviolet image acquisition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779633.9U CN215647020U (en) | 2021-08-02 | 2021-08-02 | Ultraviolet image acquisition device and ultraviolet imaging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779633.9U CN215647020U (en) | 2021-08-02 | 2021-08-02 | Ultraviolet image acquisition device and ultraviolet imaging device |
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| Publication Number | Publication Date |
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| CN215647020U true CN215647020U (en) | 2022-01-25 |
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| CN202121779633.9U Active CN215647020U (en) | 2021-08-02 | 2021-08-02 | Ultraviolet image acquisition device and ultraviolet imaging device |
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