CN221897679U - Spectrum-adjustable light source and aging detection device - Google Patents

Abstract

The utility model provides a spectrum-adjustable light source and an aging detection device, comprising a first shell and a second shell that are detachably connected, wherein a monochromatic light source component with adjustable spectrum intensity is arranged in the first shell, and a background light source component is arranged in the second shell; the spectrum-adjustable light source also includes a reflection enhancement film component arranged between the first shell and the second shell, and the reflection enhancement film component includes a reflection enhancement film corresponding to the emission band of the monochromatic light source component; the light emitted by the background light source component can pass through the reflection enhancement film component and the first shell in sequence. The utility model can realize light aging of a single band, a full spectrum band, and a specific band in the full spectrum after filtering, to meet different testing requirements.

Description

A spectrum adjustable light source and aging detection device

Technical Field

The utility model belongs to the technical field of illumination, and relates to a spectrum-adjustable light source and an aging detection device.

Background Art

Photovoltaic technology is an important branch of the energy supply system and an important component of new energy. With the continuous development of the photovoltaic industry, industry standards are becoming more and more standardized. Photovoltaic modules need to pass strict IEC (International Electrotechnical Commission) standard tests, including UV tests, initial and final stabilization, hot spot effects and other test sequences involving UV light or full spectrum light.

Traditional solar simulators often use xenon lamps, halogen lamps, etc. as light sources, among which xenon lamps are the most widely used. However, xenon lamps require a higher starting voltage, resulting in poor stability and high energy consumption. In addition, the spectrum of xenon lamps needs to pass through a complex filtering structure to approach the full spectrum of sunlight, resulting in high maintenance costs in the later stage of use.

LED (light-emitting diode) light boxes can simulate the entire solar spectrum by combining LED lights with different wavelengths. They have good spectral monochromaticity and can maintain spectral stability during use. However, most existing LED light boxes are based on a single condition, such as only providing a full-spectrum light source or only providing a UV light source, which cannot meet diverse testing needs. When the intensity of a certain band in the spectrum needs to be adjustable, it is generally necessary to use filters and multiple light sources to build a special optical path, which has a complex structure and cumbersome operation.

Therefore, it is necessary to develop a light source that can easily adjust the intensity of a specific band in the spectrum to meet the diverse needs of optical testing.

Utility Model Content

In view of the shortcomings of the prior art, the purpose of the utility model is to provide a spectrally adjustable light source and an aging detection device with a wide spectral range, which can adjust the light intensity of a specific band and filter the light of a specific band in the full spectrum to meet different testing needs.

To achieve this purpose, the utility model adopts the following technical solutions:

In a first aspect, the utility model provides a spectrally adjustable light source, comprising a first shell and a second shell that are detachably connected, a monochromatic light source assembly with adjustable spectral intensity is arranged in the first shell, and a background light source assembly is arranged in the second shell; the spectrally adjustable light source also includes an anti-reflection film assembly arranged between the first shell and the second shell, the anti-reflection film assembly includes an anti-reflection film corresponding to the emission band of the monochromatic light source assembly; the light emitted by the background light source assembly can pass through the anti-reflection film assembly and the first shell in sequence.

The anti-reflection film assembly in the present invention has an anti-reflection effect on the light within the emission band of the monochromatic light source assembly, and generally has no anti-reflection effect or has a very weak anti-reflection effect on the light that does not belong to this band. The anti-reflection film may refer to a film made using the principle of constructive interference of light reflected on the upper and lower surfaces of the film, which can enhance the reflected light. It can be understood by those skilled in the art that the anti-reflection effect of the anti-reflection film is related to the thickness of the film layer and the number of film layers. There are many materials that can be used to prepare the anti-reflection film, such as silicon dioxide, silicon nitride, indium nitride, etc. The present invention does not limit this, and it can be replaced arbitrarily as long as it can meet the use requirements. The technical solution obtained after the replacement also falls within the protection scope and disclosure scope of the present invention.

That is, the utility model provides the following illumination conditions of a spectrum-adjustable light source: (1) the first shell is used alone to form an illumination condition of a monochromatic light source of a specific wavelength band; (2) the second shell is used alone to form an illumination condition of a background light source; (3) the first shell and the second shell are used together to form a combined light source, at which time the light emitted by the background light source assembly is emitted into the first shell through the anti-reflection film assembly, and the anti-reflection film assembly is used to filter the spectrum corresponding to the monochromatic light source in the light emitted by the background light source assembly. When the illumination intensity of the monochromatic light source is enhanced from zero, the spectral intensity corresponding to the monochromatic light source in the emission spectrum of the combined light source can be enhanced from zero, that is, the combined light source becomes a light source with a background light source spectrum and an adjustable specific spectral intensity. When the intensity of a specific spectrum in the background light source needs to be adjustable, it is only necessary to replace the second shell in the combined light source with a second shell having an emission spectrum identical to the specific spectrum, and select a corresponding anti-reflection film assembly. As for the method of adjusting the illumination intensity of the monochromatic light source, the technician can select it according to actual needs. For example, the opening and closing of the lamp beads in the monochromatic light source can be independently controlled by adjusting the number of lamp beads lit in the monochromatic light source. For example, the luminous intensity of each lamp bead of a monochromatic light source can be directly adjusted by adjusting the current.

It should be noted that the present invention does not specifically limit the structure and size of the first shell and the second shell. For example, they can be cylindrical, cube or cuboid, and those skilled in the art can also adjust the size according to actual lighting conditions and lighting scenes. In addition, the side of the second shell close to the first shell can be an open structure, or a transparent material can be configured to allow the light emitted by the background light source assembly to enter the first shell through the anti-reflection film assembly.

As a preferred technical solution of the utility model, the anti-reflection film assembly is a flat plate structure or a concave plate structure.

As a preferred technical solution of the utility model, the monochromatic light source assembly includes a plurality of monochromatic illumination groups sequentially arranged along the axial direction of the first shell, and the monochromatic illumination group includes a plurality of monochromatic lamp beads distributed circumferentially along the inner wall of the first shell.

As a preferred technical solution of the utility model, the monochromatic lamp beads are arranged obliquely toward the anti-reflection film assembly.

As a preferred technical solution of the utility model, the monochromatic lamp beads include LED lamp beads used to emit monochromatic light in any band of the full spectrum band.

As a preferred technical solution of the utility model, the monochromatic lamp beads include any one of ultraviolet lamp beads, infrared lamp beads, blue light lamp beads or red light lamp beads.

In the utility model, the monochromatic lamp beads are inclined toward the anti-reflection film assembly, and the anti-reflection film assembly is made of transparent material, so that the light emitted by the monochromatic lamp beads of a specific spectrum can enhance the light intensity of a specific band after being reflected by the anti-reflection film, and form a uniform surface light source at the same time.

As a preferred technical solution of the present utility model, the background light source component is a full-spectrum light source component.

The full-spectrum light source assembly described in the utility model is composed of a plurality of single-light lamp beads for emitting light rays of different wavelengths.

As a preferred technical solution of the utility model, the full-spectrum light source assembly includes single-light lamp beads with a peak wavelength between 300 and 470nm, single-light lamp beads with a peak wavelength between 470 and 561nm, single-light lamp beads with a peak wavelength between 561 and 657nm, single-light lamp beads with a peak wavelength between 657 and 772nm, single-light lamp beads with a peak wavelength between 772 and 919nm, and single-light lamp beads with a peak wavelength between 919 and 1200nm.

The full-spectrum light source assembly of the utility model is adjustable in the corresponding bands of 300-470nm, 470-561nm, 561-657nm, 657-772nm, 772-919nm, and 919-1200nm. The corresponding single-light lamp beads are selected, and the full-spectrum matching is achieved through array arrangement and intensity adjustment of different bands. When the second shell is used alone, it can be used as a solar simulator light source to perform related sequence tests, and when used in combination with the first shell, the intensity of a specific spectrum in the full-spectrum background can be adjusted.

As a preferred technical solution of the utility model, the wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are the same or different.

That is, all the monochromatic lamp beads in the first shell of the utility model can be configured to emit light of the same wavelength, or each monochromatic illumination group can be configured to emit light of one wavelength, and the light emitted by any two monochromatic illumination groups are different from each other, or at least two monochromatic illumination groups can be configured to emit light of the same wavelength. When the wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are the same, the adjustment range of the emission spectrum intensity of the monochromatic light source assembly can be increased due to the presence of multiple monochromatic illumination groups with the same emission spectrum. When the wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are different, the monochromatic light source assembly can provide different monochromatic spectra. At this time, the anti-reflection film assembly generally needs to be adaptively improved so that various monochromatic illumination groups have their corresponding anti-reflection films, and the anti-reflection films corresponding to the emission spectrum of each monochromatic light source assembly can be stacked.

In a second aspect, the utility model provides an aging detection device, wherein the aging detection device comprises the spectrum adjustable light source described in the first aspect.

The aging test device of the utility model can realize light aging with adjustable intensity in a single band, a background spectrum band, and a specific band in the full spectrum to meet different testing needs. By integrating the background spectrum with a monochromatic light source in a specific band, the use cost of light aging equipment and other consumables is reduced.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model provides a spectrum adjustable light source and aging detection device, which integrates a monochromatic light source of a specific band and a background light source to obtain a combined light source with adjustable spectral intensity of a specific band. The anti-reflection film component is used to reflect the light emitted by the monochromatic light source, and at the same time, the light of a specific band in the spectrum of the background light source (that is, the light in the spectrum emitted by the monochromatic light source) can be filtered to meet different lighting requirements, and the first shell and the second shell are detachable. After being disassembled, they can be used separately in scenes with different spectral requirements, and can also be combined and applied to scenes that require adjustable spectral intensity of a specific band, with a wide range of applications and stronger adjustability.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a spectrum-adjustable light source provided in Example 1 of the utility model;

FIG2 is a schematic structural diagram of a second housing provided in Example 1 of the present utility model;

FIG3 is a schematic diagram of light irradiation provided by Application Example 1 of the present utility model;

FIG. 4 is a schematic diagram of light irradiation provided in Application Example 3 of the present utility model.

Among them, 1-first shell; 2-second shell; 3-anti-reflection film assembly; 4-ultraviolet LED lamp beads; 5-background light source assembly; 6-circuit auxiliary components.

DETAILED DESCRIPTION

It should be understood that, in the description of the present utility model, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

In a specific embodiment, the utility model provides a spectrally adjustable light source, comprising a first shell and a second shell that are detachably connected, a monochromatic light source assembly with adjustable spectral intensity is arranged in the first shell, and a background light source assembly is arranged in the second shell; the spectrally adjustable light source also includes an anti-reflection film assembly arranged between the first shell and the second shell, the anti-reflection film assembly includes an anti-reflection film corresponding to the emission band of the monochromatic light source assembly; the light emitted by the background light source assembly can pass through the anti-reflection film assembly and the first shell in sequence.

The spectrum adjustable light source provided by the utility model integrates a monochromatic light source of a specific wavelength band and a background light source into one, thereby obtaining a combined light source with adjustable spectrum intensity of a specific wavelength band. The anti-reflection film assembly is used to reflect the light emitted by the monochromatic light source, and at the same time, the light of a specific wavelength band in the spectrum of the background light source can be filtered to meet different lighting requirements. The first shell and the second shell are detachable and can be used separately for scenes with different spectrum requirements after being disassembled, and can also be combined and applied to scenes requiring spectrum intensity of a specific wavelength band.

That is, the utility model provides the following illumination conditions of a spectrum-adjustable light source: (1) the first shell is used alone to form an illumination condition of a monochromatic light source of a specific wavelength band; (2) the second shell is used alone to form an illumination condition of a background light source; (3) the first shell and the second shell are used together to form a combined light source, at which time the light emitted by the background light source assembly is emitted into the first shell through the anti-reflection film assembly, and the anti-reflection film assembly is used to filter the spectrum corresponding to the monochromatic light source in the light emitted by the background light source assembly. When the illumination intensity of the monochromatic light source is enhanced from zero, the spectral intensity corresponding to the monochromatic light source in the emission spectrum of the combined light source can be enhanced from zero, that is, the combined light source becomes a light source with a background light source spectrum and an adjustable specific spectral intensity. When the intensity of a specific spectrum in the background light source needs to be adjustable, it is only necessary to replace the second shell in the combined light source with a second shell having an emission spectrum identical to the specific spectrum, and select a corresponding anti-reflection film assembly. As for the method of adjusting the illumination intensity of the monochromatic light source, the technician can select it according to actual needs. For example, the opening and closing of the lamp beads in the monochromatic light source can be independently controlled by adjusting the number of lamp beads lit in the monochromatic light source. For example, the luminous intensity of each lamp bead of a monochromatic light source can be directly adjusted by adjusting the current.

In some embodiments, the structures of the first shell and the second shell may be cylindrical, cube-shaped, or rectangular parallelepiped-shaped.

In some embodiments, a side of the second shell close to the first shell may be an open structure, or may be configured with a transparent material to allow light emitted by the background light source assembly to enter the first shell through the anti-reflection film assembly.

In some embodiments, the anti-reflection film assembly is a flat plate structure or a concave plate structure.

In some embodiments, the monochromatic light source assembly includes a plurality of monochromatic illumination groups sequentially arranged along the axial direction of the first shell, and the monochromatic illumination group includes a plurality of monochromatic lamp beads distributed circumferentially along the inner wall of the first shell. The monochromatic lamp beads are arranged obliquely toward the anti-reflection film assembly. The monochromatic lamp beads include LED lamp beads for emitting monochromatic light in any band of the full spectrum band. Specifically, the monochromatic lamp beads include any one of ultraviolet lamp beads, infrared lamp beads, blue light lamp beads or red light lamp beads. The wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are the same or different.

The utility model provides the following three arrangements for the arrangement of monochromatic illumination groups: (1) all monochromatic lamp beads in the first shell can be configured to emit light of the same wavelength; (2) each monochromatic illumination group in the first shell emits light of one wavelength, and the light emitted by any two monochromatic illumination groups are different from each other; (3) at least two monochromatic illumination groups in the first shell emit light of the same wavelength. Among them, when the wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are the same, the adjustment range of the emission spectrum intensity of the monochromatic light source assembly can be increased due to the presence of multiple monochromatic illumination groups with the same emission spectrum. When the wavelengths of light emitted by the monochromatic lamp beads of two adjacent monochromatic illumination groups are different, the monochromatic light source assembly can provide different monochromatic spectra. At this time, the anti-reflection film assembly generally needs to be adaptively improved so that various monochromatic illumination groups have their corresponding anti-reflection films, and the anti-reflection films corresponding to the emission spectrum of each monochromatic light source assembly can be stacked.

In the utility model, the monochromatic lamp beads are inclined toward the anti-reflection film assembly, and the anti-reflection film assembly is made of transparent material, so that the light emitted by the monochromatic lamp beads of a specific spectrum in the second shell can be reflected by the anti-reflection film to enhance the light intensity of a specific band and form a uniform surface light source.

In some embodiments, the background light source assembly is a full-spectrum light source assembly, which may be composed of a number of single-light lamp beads for emitting light of different wavelengths. Specifically, the full-spectrum light source assembly includes single-light lamp beads with a peak wavelength between 300 and 470 nm, single-light lamp beads with a peak wavelength between 470 and 561 nm, single-light lamp beads with a peak wavelength between 561 and 657 nm, single-light lamp beads with a peak wavelength between 657 and 772 nm, single-light lamp beads with a peak wavelength between 772 and 919 nm, and single-light lamp beads with a peak wavelength between 919 and 1200 nm. The full-spectrum light source assembly of the utility model is adjustable in the corresponding bands of 300 to 470 nm, 470 to 561 nm, 561 to 657 nm, 657 to 772 nm, 772 to 919 nm, and 919 to 1200 nm. The corresponding single-light lamp beads are selected, and the full-spectrum matching is achieved through array arrangement and intensity adjustment of different bands. When the second shell is used alone, it can be used as a solar simulator light source to perform related sequence tests, and when used in combination with the first shell, it can achieve adjustable intensity of a specific spectrum in the full spectrum background.

In some embodiments, a first power supply chamber and a second power supply chamber are respectively disposed on the first shell and the second shell. The first power supply chamber is used to supply power to the monochromatic light source assembly, and the second power supply chamber is used to supply power to the background light source assembly.

Specifically, the first power supply chamber independently controls the opening and closing of each monochromatic illumination group to adjust the illumination intensity, and can also select the opening or closing of the monochromatic illumination group with a specific wavelength according to actual illumination conditions.

In another specific embodiment, the utility model provides an aging detection device, which includes the spectrally adjustable light source provided in a specific embodiment, which can realize light aging in a single band, a full spectrum band, and a specific band in the full spectrum after filtering, to meet different testing needs. By integrating full-spectrum and specific-band monochromatic light sources, the use cost of light aging equipment and other consumables is reduced.

Example 1

The present embodiment provides a spectrum adjustable light source, as shown in FIG1 , specifically comprising a detachably connected first shell 1 and a second shell 2. A monochromatic light source assembly is disposed in the first shell 1, a background light source assembly 5 is disposed in the second shell 2, and an anti-reflection film assembly 3 corresponding to the emission band of the monochromatic light source assembly is also disposed between the first shell 1 and the second shell 2, the anti-reflection film assembly 3 having a concave panel structure, and the side of the second shell 2 close to the first shell 1 is an open structure, so that the light emitted by the background light source assembly 5 passes through the anti-reflection film assembly 3 and the first shell 1 in sequence.

The monochromatic light source assembly in the first housing 1 includes three groups of monochromatic illumination groups arranged in sequence along the axial direction of the first housing 1, and the monochromatic illumination groups include a plurality of ultraviolet LED lamp beads 4 distributed circumferentially along the inner wall of the first housing 1, and the ultraviolet LED lamp beads 4 are tilted toward the anti-reflection film assembly 3 (the horizontal line inside the first housing 1 in FIG. 1 is used to indicate that the LED lamp beads 4 can be distributed circumferentially inside the first housing 1). A first power supply chamber is also provided on the first housing 1, which is used to independently supply power to each group of monochromatic illumination groups, and the ultraviolet light irradiation intensity in the first housing 1 can be adjusted.

As shown in FIG2 , the background light source assembly 5 in the second housing 2 is a full-spectrum light source assembly consisting of single light lamp beads with a peak wavelength between 300 and 470 nm, single light lamp beads with a peak wavelength between 470 and 561 nm, single light lamp beads with a peak wavelength between 561 and 657 nm, single light lamp beads with a peak wavelength between 657 and 772 nm, single light lamp beads with a peak wavelength between 772 and 919 nm, and single light lamp beads with a peak wavelength between 919 and 1200 nm. A second power supply chamber is provided on the second housing 2 for supplying power to the background light source assembly 5.

Application Example 1

This application example uses the first housing 1 provided in Example 1 to conduct UV tests on solar photovoltaic modules. The first power supply chamber is used to supply power to all monochromatic illumination groups to turn on the UV LED lamp beads 4. As shown in FIG3 , the UV B light (dashed line in FIG3 ) emitted by the UV LED lamp beads 4 is reflected by the anti-reflection film assembly 3, thereby increasing the spectral intensity of the light in this band, forming a surface light source, and improving the uniformity of light emission.

Application Example 2

This application example uses the second housing 2 provided in Example 1 to simulate a sunlight simulator to perform a solar photovoltaic component related sequence test. The second power supply chamber is used to supply power to the background light source component 5 to turn on the single light lamp beads corresponding to the wavelength bands of 300-470nm, 470-561nm, 561-657nm, 657-772nm, 772-919nm, and 919-1200nm, and select the corresponding single light lamp beads to achieve full spectrum matching.

Application Example 3

This application example uses the spectrum adjustable light source provided in Example 1 to conduct an experiment on the influence of ultraviolet light in the full spectrum. As shown in Figure 4, the first power supply chamber is used to control all the ultraviolet LED lamp beads 4 in the first shell 1 to turn on, and the second power supply chamber is used to control the background light source assembly 5 to turn on. The background light source assembly 5 emits full-spectrum A light (as shown by the thick black dotted line inside the second shell 2 in Figure 4). When passing through the anti-reflection film assembly 3, the light in the ultraviolet light band is lost (as shown by the thin black dotted line inside the second shell 2 in Figure 4), so that the anti-reflection film assembly 3 transmits light in other bands except the ultraviolet light band (as shown by the thin black solid line in Figure 4). At the same time, the ultraviolet LED lamp beads 4 emit ultraviolet spectra with adjustable ultraviolet spectrum intensity, which are reflected at the anti-reflection film assembly 3. The emission light of the first shell transmitted by the anti-reflection film assembly 3 and the emission light of the second shell reflected by the anti-reflection film assembly 3 are combined to irradiate the outside of the light source together. It should be noted that some of the accompanying drawings also illustrate circuit auxiliary elements 6, which can be considered as a part of the second power supply chamber. However, the utility model does not impose specific restrictions on the power supply method and power supply structure of the first shell and the second shell, that is, it does not impose specific restrictions on the aforementioned first power supply chamber and second power supply chamber. Technical personnel can choose a suitable design according to actual needs.

Example 2

This embodiment provides a spectrum adjustable light source, which is different from the embodiment 1 in that the wavelengths of light emitted by the three monochromatic illumination groups in the first housing 1 are different from each other, and from top to bottom, they are a monochromatic illumination group for emitting ultraviolet light, a monochromatic illumination group for emitting infrared light, and a monochromatic illumination group for emitting blue light. The first power supply chamber independently controls the opening or closing of each monochromatic illumination group to achieve different light irradiation, and the rest of the structure is the same as the embodiment 1.

The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims (10)

1. The spectrum-adjustable light source is characterized by comprising a first shell and a second shell which are detachably connected, wherein a monochromatic light source component with adjustable spectrum intensity is arranged in the first shell, and a background light source component is arranged in the second shell; the spectrum-adjustable light source further comprises a reflection enhancing film component arranged between the first shell and the second shell, and the reflection enhancing film component comprises a reflection enhancing film corresponding to the emission wave band of the monochromatic light source component; light rays emitted by the background light source component can sequentially pass through the reflection enhancing film component and the first shell.

2. The spectrally tunable light source of claim 1, wherein the reflection enhancing film component is a planar plate structure or a concave plate structure.

3. The spectrally adjustable light source of claim 1, wherein the monochromatic light source assembly comprises a plurality of monochromatic light groupings disposed in sequence along the first housing axis, the monochromatic light groupings comprising a plurality of monochromatic light beads circumferentially distributed along the first housing inner wall.

4. A spectrally adjustable light source as recited in claim 3, wherein said single color light beads are disposed obliquely toward said reflection enhancing film assembly.

5. A spectrally adjustable light source as recited in claim 3, wherein the single-color light bead comprises an LED light bead for emitting single-color light in any one of the full spectral bands.

6. A spectrally adjustable light source as recited in claim 3, wherein the single-color bead comprises any one of an ultraviolet bead, an infrared bead, a blue bead, or a red bead.

7. The spectrally tunable light source of claim 1, wherein the background light source component is a full spectrum light source component.

8. The spectrally tunable light source of claim 7, wherein the full-spectrum light source component comprises single-light beads with peak wavelengths between 300 and 470nm, single-light beads with peak wavelengths between 470 and 561nm, single-light beads with peak wavelengths between 561 and 657nm, single-light beads with peak wavelengths between 657 and 772nm, single-light beads with peak wavelengths between 772 and 919nm, and single-light beads with peak wavelengths between 919 and 1200 nm.

9. A spectrally adjustable light source as recited in claim 3, wherein the wavelengths of light emitted by the single-color light beads of two of said single-color light groupings disposed adjacent one another are the same or different.

10. An aging detection apparatus comprising a spectrally adjustable light source as claimed in any one of claims 1 to 9.