Optical film performance test system

Abstract

The utility model provides an optical film performance test system. The optical film performance test system comprises a light source; the light path assembly comprises at least one of a diaphragm, a reflector and a beam splitter; the display screen at least comprises a first color developing area and is used for displaying light waves with different wavelengths; the to-be-tested film is located between the dispersion element and the display screen; light waves with different wavelengths can be filtered; the light path starts from the light source and sequentially passes through the light path assembly, the dispersion element, the to-be-tested film and the display screen. By integrating the light source, the light path assembly and the dispersion element, the system structure is compact, spectral decomposition can be realized without complex instruments, and the equipment cost and the maintenance difficulty are greatly reduced. Meanwhile, the display screen coated with the ultraviolet color developing material and the infrared color developing material is adopted, ultraviolet, visible light and infrared light waves can be displayed at the same time, the limitation of visible light and invisible light detection in a traditional method is broken through, and the detection cost is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of optical films and belongs to the optical thin film performance testing system. Background Technology

[0002] In the field of optical thin film testing, the optical properties of thin films, such as light transmittance, reflectance, absorptivity, and scattering performance, are key factors affecting their application performance. These properties directly determine the applicability of thin films in optics, solar energy, displays, and protective coatings. For example, in the application of solar films and sunshade films, the ability to block ultraviolet (UV) and infrared (IR) rays is an important indicator of their performance, while in the fields of optical coatings and display panels, the spectral selectivity of the thin film affects the final image quality. Therefore, accurate and rapid testing of the optical properties of optical thin films is of great significance for product development, quality control, and application evaluation.

[0003] Current methods for detecting optical thin films primarily rely on high-precision spectral analysis equipment, such as spectrophotometers, Fourier transform infrared spectrometers (FTIR), and ellipsometers. These instruments offer high detection accuracy and can measure parameters such as spectral transmittance and reflectance across different wavelength ranges. However, these techniques have the following limitations:

[0004] (1) The equipment is expensive and the operating cost is high. Traditional spectrometers are expensive. A high-precision spectrophotometer or Fourier transform infrared spectrometer often costs hundreds of thousands or even millions of yuan, which is not suitable for large-scale popularization. The maintenance cost is high and the calibration is complicated. It is usually necessary to replace key components such as light source and grating regularly to maintain detection accuracy.

[0005] (2) Complex operation and poor portability. Many optical testing devices are bulky and have strict operating environment requirements, such as needing a darkroom or specific lighting conditions, making them unsuitable for on-site testing or portable applications. The operation of these devices requires professional technicians, and non-professional users find it difficult to quickly learn how to use them, thus limiting their applications.

[0006] (3) Limitations in ultraviolet and infrared detection. Traditional spectroscopic detection methods have high measurement accuracy in the visible light (400nm-700nm) range, but for ultraviolet light (10nm-400nm) and infrared light (700nm-1mm), additional special sensors or filtering systems are usually required, which further increases the cost and equipment complexity. Since ultraviolet and infrared light are difficult to observe directly, most existing methods rely on electronic sensors for data analysis, lacking intuitive visual detection methods.

[0007] (4) Low detection efficiency and inability to achieve rapid evaluation. Existing equipment often requires testing different wavelengths of spectrum separately and obtaining test results through calculation and analysis. This process is time-consuming and cannot meet the needs of rapid evaluation. For application scenarios that require batch testing, such as quality control on production lines, existing technologies cannot provide a fast and convenient solution.

[0008] In response to the above problems, researchers have proposed some improvement methods in recent years, such as:

[0009] Multi-band light sources combined with filters are used to improve the detection capability of non-visible light (ultraviolet and infrared); a miniature spectrometer is used to realize miniaturized and portable optical detection equipment; and AI algorithms are combined to perform spectral data analysis to improve detection efficiency and automation.

[0010] While these improvements have enhanced detection performance to some extent, they still struggle to overcome issues such as high equipment costs, complex operation, and a lack of intuitive colorimetric comparisons. Therefore, the market urgently needs a more economical, efficient, and portable optical thin film performance testing system to address current technological bottlenecks and improve the versatility of optical thin film testing. Utility Model Content

[0011] The purpose of this invention is to provide an optical thin film performance testing system to solve the problems in the background art.

[0012] To achieve the above objectives, this utility model provides the following technical solution:

[0013] This utility model provides an optical thin film performance testing system in a first aspect, comprising:

[0014] light source;

[0015] Optical path components, including at least one of an aperture, a mirror, and a beam splitter;

[0016] Dispersive elements, and

[0017] The display screen includes at least a first color area for displaying light waves of different wavelengths;

[0018] The thin film under test is located between the dispersive element and the display screen; it can filter light waves of different wavelengths; the optical path starts from the light source and passes through the optical path assembly, the dispersive element, the thin film under test and the display screen in sequence.

[0019] In one or more embodiments, the light source is one of xenon lamps, halogen lamps, tungsten filament lamps, LEDs, solar simulators, infrared emitters, and ultraviolet emitters.

[0020] In one or more embodiments, the dispersive element is one of a prism, a diffraction grating, a Fresnel zone plate, a birefringent crystal, a photonic crystal, and a gradient refractive index medium, and the dispersive element can be rotated.

[0021] In one or more embodiments, the display screen is made of white or transparent material. A convex lens is also disposed in front of the display screen, and a light intensity sensor and a temperature sensor are disposed on the display screen.

[0022] In one or more embodiments, the display screen is coated with ultraviolet color-developing materials and infrared color-developing materials.

[0023] In one or more embodiments, the ultraviolet colorimetric material is a rare-earth-doped phosphor, a sulfide phosphor, or Rhodamine B.

[0024] In one or more embodiments, the infrared color-changing material is a photochromic or upconversion material.

[0025] In one or more embodiments, the test system further includes a light source intensity adjuster, an attenuator, and a heat dissipation device.

[0026] In one or more embodiments, the display screen further includes a second color display area, and the display screen is rotatable.

[0027] Compared with the prior art, the present invention has at least the following beneficial effects:

[0028] (1) Portability and low cost: This invention integrates optical path components (such as apertures, mirrors, and beam splitters) and dispersive elements (prisms or gratings), resulting in a compact system structure that achieves spectral decomposition without complex instruments, significantly reducing equipment costs and maintenance difficulty. Simultaneously, it employs coated ultraviolet colorimetric materials (such as Rhodamine B and sulfide phosphors) and infrared colorimetric materials (such as NaYF4:Yb). 3+ / Tm 3+ The display screen can simultaneously display ultraviolet, visible and infrared light waves, breaking through the limitations of traditional methods in detecting visible and non-visible light, and significantly reducing detection costs.

[0029] (2) Intuitive and rapid analysis: This invention, through its beam splitter and multi-color development area design, supports simultaneous comparison between the film under test and the blank control group. Users can directly observe the color differences in the color development areas and quickly determine the absorption and reflection characteristics of the film at different wavelengths, significantly improving detection efficiency. In addition, the optical path components and dispersive elements are compatible with various light sources (such as xenon lamps, halogen lamps, ultraviolet lamps, and infrared lamps) and color development materials, supporting the testing needs of various types of films. The system has strong scalability and is applicable to a wide range of scenarios.

[0030] (3) Environmental adaptability: This utility model is equipped with a light source intensity regulator and a heat dissipation device to ensure stable operation of the system under different lighting conditions, avoid performance degradation caused by overheating, and improve the reliability and service life of the equipment. Through the above technical solutions, this utility model effectively solves the problems of high cost, low efficiency, and difficulty in non-visible light detection in existing detection technologies, and provides an efficient, intuitive and economical solution for the performance evaluation of optical thin films.

[0031] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the optical thin film performance testing system of this utility model.

[0033] Figure 2 This is a schematic diagram of the specific structure of the optical path component of this utility model.

[0034] Figure 3 This is a schematic diagram of the structure of the color display area of ​​the display screen in Embodiment 1 of this utility model.

[0035] Figure 4 This is a schematic diagram of the display screen color display area structure in Embodiment 2 of this utility model.

[0036] Figure label:

[0037] 1. Light source; 2. Optical path assembly; 201. Aperture; 202. Mirror; 203. Beam splitter; 3. Dispersion element; 401. First thin film; 402. Second thin film; 5. Display screen; 501. First color display area; 502. Second color display area. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “on the left,” “left side,” “on the right,” and “on the right side” are used herein for convenience of description to describe the relationship between one component or feature shown in the figure and other components or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of components in use and operation. For example, if a component in the figure is flipped, then a component or feature described as “below,” “under,” or “below” other components or features would be oriented “above” other components or features. Thus, the exemplary terms “below” and “under” can include both upper and lower orientations. “On the left” and “on the left” can include both left and right orientations.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] Please see Figure 1 This is a schematic diagram of the optical thin film performance testing system of this utility model.

[0044] Example 1

[0045] Optical thin film performance testing system, including:

[0046] Light source 1;

[0047] The optical path component 2 includes an aperture 201 and a reflector 202. The reflector 202 reflects the light from the light source 1 at a 90° angle before it shines onto the thin film, thus reducing the interference of direct sunlight from the light source 1 on the dispersive spectrum. The aperture 201 can modify and limit the width and geometric dimensions of the light source 1.

[0048] Please see Figure 3 Dispersive element 3 can disperse light waves into:

[0049] Ultraviolet (UV) wavelength range: 10nm-400nm

[0050] Violet (400-450nm)

[0051] Blue light (450-495nm)

[0052] Cyan (495-520nm)

[0053] Green light (520-570nm)

[0054] Yellow light (570-590nm)

[0055] Orange (590-620nm)

[0056] Red light (620-700nm)

[0057] Infrared (IR) wavelength range: 700nm-1mm.

[0058] Display screen 5 includes a first color display area 501 and a second color display area 502, used to display light waves of different wavelengths. For ease of observation, display screen 5 can be rotated. The first color display area 501 and the second color display area 502 are on the same vertical plane.

[0059] The film to be tested is located between the dispersive element 3 and the display screen 5. In this embodiment, a first film 401 and a second film 402 are provided. The first film 401 is the film to be tested, and the second film 402 is a blank control group. In other embodiments, the second film 402 can also be other films to be tested and compared. A third film and a fourth film, etc., can be provided according to actual needs, and no limitation is made here. The first film 401 and the second film 402 are attached to two locations on the dispersive element 3.

[0060] The first thin film 401 can filter light waves of different wavelengths; the optical path starts from the light source 1 and passes sequentially through the aperture 201, the dispersive element 3, the thin film to be tested, and the display screen 5 in the optical path assembly 2.

[0061] In this embodiment, the light source 1 is a xenon lamp, the dispersive element 3 is a prism, and the display screen 5 is white.

[0062] The display screen 5 is coated with ultraviolet color-developing materials and infrared color-developing materials.

[0063] The ultraviolet colorimetric material is Rhodamine B, which emits red light when exposed to ultraviolet light.

[0064] The infrared colorimetric material is NaYF4:Yb 3+ / Tm 3+ Excitation with 980nm infrared light produces blue light (450nm). In other embodiments, other color-developing materials can also be used to achieve the effect of displaying infrared and ultraviolet light on the display screen 5 of this utility model, and no limitation is made here.

[0065] The testing system in this embodiment also includes a light source 1 intensity adjuster and a heat dissipation device. These are used to adjust the brightness and protect the device from overheating.

[0066] The testing method of this utility model first turns on the light source 1, and adjusts the brightness of the light source 1 to a suitable intensity through the light source 1 intensity adjuster, so that the light passes through the optical path component 2, the dispersive element 3 and the thin film, and is displayed on the first color display area 501 and the second color display area 502 on the display screen 5, thereby determining which wavelengths of light are filtered by the thin film.

[0067] In this embodiment, a light intensity sensor and a temperature sensor are provided on the display screen 5 to measure the intensity and temperature of light waves of various wavelengths after dispersion, in order to evaluate the filtration effect of the thin film.

[0068] For example, the first film 401 is used to filter green light. At this time, the second film 402 is used as a blank control. By comparing the color depth of the green light part of the first color development area and the second color development area, the filtering degree of the green light of the first film 401 can be evaluated.

[0069] Example 2

[0070] Optical thin film performance testing system, including:

[0071] Light source 1;

[0072] Please see Figure 1 and Figure 2 The optical path component 2 includes an aperture 201, a reflector 202, and a beam splitter 203; wherein the beam splitter 203 splits the light into at least two beams, the two beams pass through the dispersive element 3, and then through the first thin film 401 and the second thin film 402 respectively.

[0073] Dispersive element 3 can disperse light waves into:

[0074] Ultraviolet (UV) wavelength range: 10nm-400nm

[0075] Violet 400-450nm

[0076] Blue light (450-495nm)

[0077] Cyan (495-520nm)

[0078] Green light (520-570nm)

[0079] Yellow light (570-590nm)

[0080] Orange (590-620nm)

[0081] Red light (620-700nm)

[0082] Infrared (IR) wavelength range: 700nm-1mm.

[0083] To facilitate observation and present a better expressive effect, the dispersive element 3 can be rotated via a support.

[0084] Please see Figure 4 The display screen 5, in this embodiment, includes a first color display area 501 and a second color display area 502. The first color display area 501 and the second color display area 502 are parallel and are used to display light waves of different wavelengths. For easier observation and magnification, a convex lens is also provided in front of the display screen 5.

[0085] The film to be tested is located between the dispersive element 3 and the display screen 5; in this embodiment, a first film 401 and a second film 402 are provided. The first film 401 is the film to be tested, and the second film 402 is another film that needs to be tested and compared. In this embodiment, the first film 401 and the second film 402 are fixed to the rear end of the dispersive element 3 by means of inserts and clamps.

[0086] The first thin film 401 and the second thin film 402 can filter light waves of different wavelengths; the light path starts from the light source 1, passes through the aperture 201 in sequence, then passes through the reflector 202 for 90-degree reflection, then passes through the beam splitter 203 to disperse into two light waves, then passes through the dispersing element 3 to disperse into light waves of different wavelengths, and finally passes through the thin film to be tested to reach the display screen 5.

[0087] In this embodiment, the light source 1 is a xenon lamp, the dispersive element 3 is a prism, and the display screen 5 is white.

[0088] The display screen 5 is coated with ultraviolet color-developing materials and infrared color-developing materials.

[0089] The ultraviolet colorimetric material is a sulfide phosphor (such as ZnS:Cu, CdS, etc.) – it emits green light when excited by ultraviolet light.

[0090] The infrared colorimetric material is NaYF4:Yb 3+ / Er 3+ —Excited by 980nm infrared light, it emits green light (550nm) + red light (660nm). In other embodiments, other color-developing materials can also be used to achieve the effect of displaying infrared and ultraviolet light on the display screen 5 of this utility model, and no limitation is made here.

[0091] The testing system in this embodiment also includes a light source 1 intensity adjuster and a heat dissipation device. These are used to adjust the brightness and protect the device from overheating.

[0092] The testing method of this utility model first turns on the light source 1, and adjusts the brightness of the light source 1 to a suitable intensity through the light source 1 intensity adjuster, so that the light passes through the optical path component 2, the dispersive element 3 and the thin film, and is displayed on the first color display area 501 and the second color display area 502 on the display screen 5, thereby determining which wavelengths of light are filtered by the first thin film 401 and the second thin film 402.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above merely illustrate several implementations of this utility model, and should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An optical thin film performance testing system, characterized in that, include: Light source (1); Optical path assembly (2), the optical path assembly (2) includes an aperture (201), a reflector (202) and a beam splitter (203); Dispersive element (3); The display screen (5) includes a first color display area (501) and a second color display area (502), and the display screen (5) is coated with ultraviolet color display material and infrared color display material. A first thin film (401) and a second thin film (402) are located between the dispersive element (3) and the display screen (5); The optical path starts from the light source (1), passes through the aperture (201), the reflector (202) and the beam splitter (203) in sequence. The beam splitter (203) splits the light into at least two beams. The two beams are dispersed into light waves of different wavelengths by the dispersing element (3) and then pass through the first film (401) and the second film (402) respectively, and reach the first color rendering area (501) and the second color rendering area (502) respectively.

2. The optical thin film performance testing system according to claim 1, characterized in that, The light source (1) is one of the following: xenon lamp, halogen lamp, tungsten filament lamp, LED, solar simulator, infrared emitter, and ultraviolet emitter.

3. The optical thin film performance testing system according to claim 1, characterized in that, The dispersive element (3) is one of a prism, a diffraction grating, a Fresnel zone plate, a birefringent crystal, a photonic crystal, and a medium with a graded refractive index, and the dispersive element (3) is capable of rotation.

4. The optical thin film performance testing system according to claim 1, characterized in that, The display screen (5) is made of white or transparent material. A convex lens is provided in front of the display screen (5). A light intensity sensor and a temperature sensor are provided on the display screen (5).

5. The optical thin film performance testing system according to claim 1, characterized in that, The first color rendering area (501) and the second color rendering area (502) are located in the same vertical plane or are parallel to each other.

6. The optical thin film performance testing system according to claim 1, characterized in that, The testing system also includes a light source intensity adjuster, an attenuator, and a heat dissipation device.

7. The optical thin film performance testing system according to claim 1, characterized in that, The second film (402) is a blank control group film or a comparison film, and the display screen (5) is rotatable.

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