CN217332170U - Semi-integrating sphere sample measurement system - Google Patents

Abstract

The utility model provides a half integrating sphere system of surveying appearance, including half integrating sphere device, dress appearance platform, light source, camera and spectrum appearance. The light-emitting imaging of the luminescent material can be carried out, the excitation light emitted by the light source is reflected to the spherical wall of the semi-integral sphere and the high reflection plane through the reflector plate to be subjected to diffuse reflection and then uniformly irradiates the sample to be detected, and the light emitted by the sample to be detected is collected by the camera to be imaged; the device can measure the luminous quantum efficiency of the luminescent material, the exciting light emitted by the light source is reflected by the reflector plate to irradiate the sample to be measured, and the light emitted by the sample to be measured is subjected to multiple diffuse reflections by the spherical wall of the semi-integrating sphere and the high reflection plane and then collected by the spectrometer to obtain sample spectrum data. The utility model discloses a built-in speculum extension optical path reduces the direct feedback loss of scattered light through the entrance by a wide margin, trades the appearance and need not to open half integrating sphere, has avoided the integrating sphere pollution problem that the dress appearance carelessly leads to still can obtain luminescent material's luminous image and spectral information simultaneously.

Description

Semi-integrating sphere sample measurement system

Technical Field

The utility model belongs to the technical field of the optical measurement, concretely relates to half integrating sphere system of surveying appearance.

Background

An integrating sphere is a hollow sphere with an inner wall coated with a white diffuse reflective material, and is commonly used in photometric measurements for radiometric, colorimetric, photometric, etc. measurements. With the rapid development of LED lighting devices in recent years, research on luminescent materials has become an important focus of people. In tests of luminous intensity color coordinates, spectrum, luminous flux, quantum efficiency and the like of the luminescent material, an integrating sphere sample measuring device is often selected due to the characteristic that fluorescence emitted by a fluorescence sample has uneven spatial light intensity distribution. The semi-integrating sphere sample measuring device has the advantages that the size of the integrating sphere is greatly reduced while the light homogenizing function of the conventional integrating sphere is realized by skillfully utilizing the equatorial plane mirror symmetry principle, and the semi-integrating sphere sample measuring device can be suitable for more light collecting and light homogenizing scenes with requirements on the size of the device. Ideally, when the reflectivity of the plane reflector of the integrating sphere sample measuring device is equal to 1, the signal output intensity of the half integrating sphere with the same aperture ratio is 2 times that of the full integrating sphere.

The semi-integrating sphere is a closed hemispherical space formed by a semi-integrating sphere and an equatorial high-reflection plane, a conventional semi-integrating sphere is usually placed at a position right facing a light source incidence port, a sample is directly irradiated for excitation, and the part of light scattered by the sample directly fed back to the light source incidence port cannot participate in scattering of the integrating sphere, so that the scattering light is lost, a larger error occurs in a scattered light intensity test, and the accuracy of an absolute quantum efficiency test is influenced. In addition, in the existing integrating sphere design, a sample is placed in an integrating sphere optical cavity, and the integrating sphere optical cavity needs to be opened during sample changing, so that the sample measuring process is complicated, and a high diffuse reflection coating on the inner wall of the integrating sphere is easily polluted. In order to solve the above problems, a semi-integrating sphere sample measurement system is provided, which can greatly reduce the direct feedback loss of scattered light through an entrance port, does not need to open an integrating sphere for sample change, and can simultaneously obtain a luminescent image and spectral information of a luminescent material, thereby satisfying the photometric measurement of more luminescent materials.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, the utility model provides a half integrating sphere surveys appearance system can reduce the direct feedback loss of scattered light through the entrance by a wide margin, trades the appearance and need not to open the integrating sphere to but luminous image and the spectral information of accessible luminescent material simultaneously satisfy the photometry measurement of more luminescent materials.

The utility model provides a pair of half score sphere system of surveying appearance mainly includes half score sphere device. As shown in fig. 3, the half-integrating sphere device is composed of a housing, a half-integrating sphere, a rotating motor, a reflector plate, a high reflection plane and a light-transmitting window cover. The shell is used for protecting the semi-integral sphere and the high reflection plane, the upper part of the semi-integral sphere is provided with a round hole, and the side surface of the semi-integral sphere is provided with three round holes; the rotating motor is arranged on the shell and extends into the semi-integrating sphere from one of the round holes formed in the side surface of the semi-integrating sphere, and the reflecting plate is arranged on an output shaft of the rotating motor; the high reflecting plane is arranged below the semi-integral sphere, and a circular through hole is formed in the middle of the high reflecting plane and used for installing the light-transmitting window cover.

Specifically, three circular holes formed in the side surface of the semi-integrating sphere are formed in the same plane surface at an angle of 90 degrees;

specifically, the reflection sheet is mounted on the output shaft of the rotating electrical machine at an angle to the horizontal direction, so that the excitation light incident in parallel with the output shaft of the rotating electrical machine can be reflected by the reflection sheet to the central position of the high reflection plane.

Further, the utility model provides a pair of half integrating sphere system of surveying appearance still includes the dress appearance platform, as shown in fig. 4, circular recess has been seted up to dress appearance bench side for place the sample that awaits measuring.

Further, the utility model provides a pair of half integrating sphere system of surveying appearance still includes light source, camera and spectrum appearance. The light source is arranged on the semi-integral sphere and extends into a round hole opposite to the round hole through the rotating motor output shaft; the camera is arranged in a circular hole formed above the semi-integrating sphere, and the spectrometer is arranged in a circular hole formed in the side face of the semi-integrating sphere and the circular hole for mounting the light source at an angle of 90 degrees.

The utility model has the advantages that:

(1) the utility model discloses a half integrating sphere surveys appearance system, light source edgewise level gets into the optics chamber of half integrating sphere, through built-in reflector reflection irradiation excitation sample, the sample receives the light of excitation reflection to pass through speculum extension optical path, thereby reduced the solid angle of the sample scattering feedback that the entrance corresponds, reduced the direct feedback loss of scattered light through the entrance, promoted the degree of accuracy of scattered light intensity test, and then can promote the precision of absolute quantum efficiency test.

(2) The utility model discloses a half total mark ball system of surveying appearance, the sample that awaits measuring is arranged in and is adorned the appearance bench, and the circular through-hole of seting up in the middle of the high anti-plane of half total mark ball device stretches into in the printing opacity window lid and tests, and the sample is located half total mark ball optical cavity outside, and the sample change need not to open half total mark ball, simplifies the test flow, has avoided the total mark ball pollution problem that dress appearance carelessly leads to.

(3) The utility model discloses a half integrating sphere sample measuring system, which can be connected with a camera and a spectrometer simultaneously, an excitation light source is reflected to the wall of the half integrating sphere by rotating a reflecting sheet by a rotating motor, and after diffuse reflection, the sample to be measured is irradiated by uniform light to perform sample luminescence imaging; the spectrum of different areas of the sample to be detected can be obtained by combining the spectrum data of the sample to be detected, so that the spectrum of the sample with uneven optical property distribution can be confirmed.

Drawings

FIG. 1 is a schematic diagram of a semi-integrating sphere sample measurement system

FIG. 2 is a schematic view of the appearance of a semi-integrating sphere sample measurement system

FIG. 3 is a schematic view of a semi-integrating sphere assembly of a semi-integrating sphere sample measurement system

FIG. 4 is a schematic view of an appearance of a sample loading platform of a semi-integrating sphere sample measuring system

FIG. 5 is a schematic view of a semi-integrating sphere sample measurement system for light emission imaging

FIG. 6 is a schematic diagram of a measurement of the quantum yield of a semi-integrating sphere sample measurement system

In the figure: 1-half integrating sphere device, 1-1-shell, 1-2-half integrating sphere, 1-3-rotating motor, 1-4-reflecting plate, 1-5-high reflecting plane, 1-6-light-transmitting window cover, 2-sample loading table, 3-light source, 4-camera, 5-spectrometer, 6-data processor and 7-sample to be measured

Detailed Description

The following will explain the technical solution of the present invention in detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All the technologies realized based on the above mentioned contents of the present invention are covered in the protection scope of the present invention.

To the above-mentioned problem that exists among the prior art, the utility model provides a half integrating sphere system of surveying appearance can reduce the direct feedback loss of scattered light through the entrance, and the integrating sphere need not to be opened in the change appearance to but luminous image and the spectral information of accessible luminescent material simultaneously satisfy more luminescent material's photometry and measure.

The utility model provides a pair of half score sphere system of surveying appearance mainly includes half score sphere device 1. As shown in FIG. 3, the half integrating sphere device 1 is composed of a shell 1-1, a half integrating sphere 1-2, a rotating motor 1-3, a reflecting plate 1-4, a high reflecting plane 1-5 and a light-transmitting window cover 1-6. The shell 1-1 is used for protecting the semi-integral sphere 1-2 and the high reflection plane 1-5, the upper part of the semi-integral sphere 1-2 is provided with a round hole, and the side surface of the semi-integral sphere is provided with three round holes; the rotating motor 1-3 is arranged on the shell 1-1, and extends into the semi-integrating sphere 1-2 from one of the round holes formed in the side surface of the semi-integrating sphere 1-2, and the reflector plate 1-4 is arranged on the output shaft of the rotating motor 1-3; the high reflecting plane 1-5 is arranged below the semi-integrating sphere 1-2, and a circular through hole is formed in the middle of the high reflecting plane 1-5 and used for installing the light-transmitting window cover 1-6.

Specifically, three circular holes formed in the side surfaces of the semi-integral spheres 1-2 are formed in the same plane at 90 degrees;

specifically, the reflection sheet 1-4 is mounted on the output shaft of the rotating electrical machine 1-3 at an angle to the horizontal direction, so that the excitation light incident in parallel with the output shaft of the rotating electrical machine 1-3 can be reflected by the reflection sheet 1-4 to the center of the high reflection plane 1-5.

Further, the utility model provides a pair of half integrating sphere system of surveying appearance still includes dress appearance platform 2, as shown in fig. 4, circular recess has been seted up to dress appearance platform 2 top for place the sample 7 that awaits measuring. As shown in fig. 5, in operation, the sample 7 to be tested is placed on the sample loading platform 2, and then the half integrating sphere device 1 is covered on the sample loading platform 2, so that the sample 7 to be tested on the sample loading platform 2 extends into the light-transmitting window cover 1-6 through the circular through hole formed in the middle of the high reflection plane 1-5 for testing.

Further, the utility model provides a pair of half integrating sphere system of surveying appearance still includes light source 3, camera 4 and spectrum appearance 5. The light source 3 is arranged on the semi-integrating sphere 1-2 and extends into a round hole opposite to the round hole with the output shaft of the rotating motor 1-3; the camera 4 is arranged in a circular hole formed above the semi-integrating sphere 1-2, and the spectrometer 5 is arranged in a circular hole formed in the side surface of the semi-integrating sphere 1-2 and the circular hole for mounting the light source 3 at an angle of 90 degrees.

The following is a detailed description with reference to specific examples:

example 1

The utility model provides a pair of half integrating sphere system of surveying appearance mainly includes half integrating sphere device 1, dress appearance platform 2, light source 3, camera 4 and spectrum appearance 5, half integrating sphere device 1 comprises shell 1-1, half integrating sphere 1-2, rotating electrical machines 1-3, reflector plate 1-4, high reflection plane 1-5 and printing opacity window lid 1-6, can carry out the luminous formation of image of the sample 7 that awaits measuring. Fig. 4 shows a first embodiment of the semi-integrating sphere sample measuring system, a sample 7 to be measured is placed on a sample loading platform 2, a semi-integrating sphere device 1 provided with a light source 3, a camera 4 and a spectrometer 5 is covered on the sample loading platform from top to bottom, and the sample 7 to be measured on the sample loading platform 2 extends into the light-transmitting window cover 1-6 through a circular through hole arranged in the middle of the high reflection plane 1-5; turning on a light source 3, rotating a reflector plate 1-4 by a rotating motor 1-3 until an excitation light beam emitted by the light source 3 can be reflected to the spherical wall of a semi-integral sphere 1-2, and uniformly irradiating a sample 7 to be measured after the excitation light beam is subjected to multiple diffuse reflections by the spherical wall of the semi-integral sphere 1-2; the camera 4 is turned on, receives the optical signal sent by the sample 7 to be measured, converts the optical signal into an electric signal and transmits the electric signal to the data processor 6 to complete the output of the optical image of the sample.

Example 2

The utility model provides a pair of half integrating sphere surveys appearance system mainly includes half integrating sphere device 1, dress appearance platform 2, light source 3, camera 4 and spectrum appearance 5, half integrating sphere device 1 comprises shell 1-1, half integrating sphere 1-2, rotating electrical machines 1-3, reflector plate 1-4, high reflection plane 1-5 and printing opacity window lid 1-6, can carry out the luminous quantum efficiency measurement of the sample 7 that awaits measuring. Fig. 5 shows the luminescence of a second embodiment of the semi-integrating sphere sampling system:

firstly, measuring a background luminescence spectrum of a half integrating sphere:

a sample 7 to be detected is not placed on the sample loading platform 2, the semi-integral sphere device 1 provided with the light source 3, the camera 4 and the spectrometer 5 is directly covered, the light source 3 is turned on, the rotating motor 1-3 rotates the reflecting sheet 1-4 until the exciting light beam emitted by the light source 3 is reflected, penetrates through the light-transmitting window cover 1-6 to irradiate the sample loading platform 2, and then is reflected back to the semi-integral sphere 1-2 for multiple diffuse reflection; and opening the spectrometer 5, collecting the excitation light signals after multiple diffuse reflections by the half-integrating sphere 1-2, converting the excitation light signals into electric signals, and transmitting the electric signals to the data processor 6 for half-integrating sphere background spectrum output.

Step two, measuring the luminescence spectrum of the sample 7 to be measured:

picking up the half-integrating sphere device 1 provided with the light source 3, the camera 4 and the spectrometer 5, putting the sample 7 to be tested on the sample loading platform 2, covering the half-integrating sphere device provided with the light source 3, the camera 4 and the spectrometer 5 again, turning on the light source 3, reflecting the emitted excitation light beam by the reflector plate 1-4, transmitting the light beam through the light-transmitting window cover 1-6 to irradiate the sample 7 to be tested, and performing diffuse reflection on the light-emitting signal emitted by the excited sample 7 to be tested in the half-integrating sphere 1-2; and turning on the spectrometer 5, collecting the luminescence signals after multiple diffuse reflections by the half integrating sphere, converting the luminescence signals into electric signals, and transmitting the electric signals to the data processor 6 for sample luminescence spectrum output.

Thirdly, calculating the luminous quantum efficiency:

and processing and calculating the data of the semi-integrating sphere background luminescence spectrum and the luminescence spectrum of the sample 7 to be detected by using the data processor 6 to obtain the luminescence quantum efficiency of the sample 7 to be detected.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A semi-integrating sphere sample measuring system is characterized in that the device mainly comprises a semi-integrating sphere device (1); the semi-integrating sphere device (1) consists of a shell (1-1), a semi-integrating sphere (1-2), a rotating motor (1-3), a reflector plate (1-4), a high reflection plane (1-5) and a light-transmitting window cover (1-6); the shell (1-1) is used for protecting the semi-integral sphere (1-2) and the high reflection plane (1-5), the upper part of the semi-integral sphere (1-2) is provided with a round hole, and the side surface of the semi-integral sphere is provided with three round holes; the rotating motor (1-3) is arranged on the shell (1-1), an output shaft of the rotating motor extends into the semi-integrating sphere (1-2) from one round hole formed in the side face of the semi-integrating sphere (1-2), and the reflector plate (1-4) is arranged on the output shaft of the rotating motor (1-3); the high reflecting plane (1-5) is arranged below the semi-integrating sphere (1-2), and a circular through hole is formed in the middle of the high reflecting plane (1-5) and used for installing the light-transmitting window cover (1-6).

2. The semi-integrating sphere sample measurement system according to claim 1, wherein three circular holes formed in the side surface of the semi-integrating sphere (1-2) are formed in the same plane at 90 degrees to each other.

3. The semi-integrating sphere sampling system according to claim 1, wherein the reflector plate (1-4) is installed on the output shaft of the rotating electrical machine 1-3) at an angle with the horizontal direction, so that the excitation light incident in parallel with the output shaft of the rotating electrical machine 1-3) can be reflected by the reflector plate (1-4) to the center of the high reflection plane (1-5).

4. The system for measuring the sample of the semi-integrating sphere according to any one of claims 1 to 3, further comprising a sample table (2), wherein a circular groove is formed above the sample table (2).

5. The semi-integrating sphere sample measurement system according to claim 4, further comprising a light source (3), a camera (4) and a spectrometer (5), wherein the light source (3) is mounted on the semi-integrating sphere (1-2) and extends into a round hole opposite to the round hole through which the output shaft of the rotating motor (1-3) extends; the camera (4) is arranged in a round hole formed above the semi-integral sphere (1-2), and the spectrometer (5) is arranged in a round hole formed in the side surface of the semi-integral sphere (1-2) and the round hole for mounting the light source (3) at an angle of 90 degrees.

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