CN216012474U - Broadband spectrum measuring instrument - Google Patents
Broadband spectrum measuring instrument Download PDFInfo
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- CN216012474U CN216012474U CN202121855505.8U CN202121855505U CN216012474U CN 216012474 U CN216012474 U CN 216012474U CN 202121855505 U CN202121855505 U CN 202121855505U CN 216012474 U CN216012474 U CN 216012474U
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Abstract
The invention discloses a broadband spectral measuring instrument, comprising: the optical fiber laser comprises an optical input port, a light shield, a beam collimator, a first flat glass, a second flat glass, at least 2 cylindrical lenses and at least 2 linear photodetectors, wherein an isolation frame which is provided with a hollow area at the center and a wedge angle is arranged between the first flat glass and the second flat glass so as to form a sealed cavity, and the front surface of the first flat glass and the rear surface of the second flat glass are oppositely arranged; at least one small flat glass with the thickness and positioned in the sealed cavity is arranged on one side of the front surface of the first flat glass, a first reflecting layer is arranged on the other side of the front surface, a second reflecting layer is arranged on the rear surface of the second flat glass, and a third reflecting layer is arranged on the surface, opposite to the second flat glass, of the small flat glass. The broadband spectrum measuring instrument has the advantages that the size of a light path is not increased, the detected spectrum range is wide, the measuring precision is high, the pm-level measuring precision is achieved, and the cost is reduced.
Description
Technical Field
The invention relates to a broadband spectrum measuring instrument, belonging to the technical field of optical wavelength detection.
Background
The existing interference etalon is limited by factors such as transverse size, the number of pixels of a linear array photoelectric detector, signal noise, calculation accuracy and the like, and the pm-level and higher measurement accuracy is difficult to realize in a wide spectral range (hundreds of nanometers) by adopting one interference etalon. In order to solve the contradiction between the wide measurement range and the high measurement precision, it is important to develop an optical wavelength measurement device with a wide detection spectral range and high measurement precision for the development of the optical field.
Disclosure of Invention
The invention aims to provide a broadband spectral measuring instrument, which has the advantages of wide detection spectral range and high measurement precision without increasing the size of an optical path, achieves the pm-level measurement precision and reduces the cost.
In order to achieve the purpose, the invention adopts the technical scheme that: a broadband spectrometer comprising: the optical fiber laser comprises an optical input port, a light shield, a beam collimator, a first flat glass, a second flat glass, at least 2 cylindrical lenses and at least 2 linear photodetectors, wherein an isolation frame which is provided with a hollow area at the center and a wedge angle is arranged between the first flat glass and the second flat glass so as to form a sealed cavity, and the front surface of the first flat glass and the rear surface of the second flat glass are oppositely arranged;
the light-shielding device comprises a first flat glass, a second flat glass, a light-shielding cover and a light-shielding device, wherein one side of the front surface of the first flat glass is provided with at least one small flat glass which is thick and is positioned in a sealing cavity, the other side of the front surface of the first flat glass is provided with a first reflecting layer, the thickness of the small flat glass is smaller than that of an isolation frame, the rear surface of the second flat glass is provided with a second reflecting layer, the opposite surfaces of the small flat glass and the second flat glass are provided with third reflecting layers, and the light-shielding cover is arranged between a light beam collimator and the first flat glass or between the second flat glass and at least 2 linear photoelectric detectors.
The further improved scheme in the technical scheme is as follows:
1. in the scheme, the number of the small flat glass plates is 2, wherein the thickness of one small flat glass plate is larger than that of the other small flat glass plate.
2. In the above scheme, the optical input port is an optical fiber input port.
3. In the above scheme, the linear photodetector is a linear scanning image device.
4. In the above scheme, the reflectance of the first reflective layer, the second reflective layer and the third reflective layer is greater than 30%, and the transmittance is greater than 50%.
5. In the above scheme, the first flat glass, the second flat glass and the isolation frame are rectangular.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the broadband spectrum measuring instrument is characterized in that an isolation frame with a hollow area in the center and a wedge angle is arranged between a first flat glass and a second flat glass, so that a sealed cavity is formed, at least one small flat glass with the thickness and positioned in the sealed cavity is arranged on one side of the front surface of the first flat glass, a first reflecting layer is arranged on the other side of the front surface of the first flat glass, the thickness of the small flat glass is smaller than that of the isolation frame, a second reflecting layer is arranged on the rear surface of the second flat glass, and a third reflecting layer is arranged on the surface, opposite to the small flat glass and the second flat glass.
Drawings
FIG. 1 is a schematic structural diagram of a broadband spectral measuring instrument according to the present invention;
FIG. 2 is a schematic exploded view of a broadband spectrometer according to embodiment 1 of the present invention;
fig. 3 is a schematic exploded view of the broadband spectrometer of embodiment 2 of the present invention.
In the above drawings: 1. an optical input port; 2. a light shield; 3. a beam collimator; 4. a first flat glass plate; 5. a second flat glass plate; 6. a cylindrical lens; 7. a linear photodetector; 8. an isolation frame; 9. small flat glass; 101. a first reflective layer; 102. a second reflective layer; 103. and a third reflective layer.
Detailed Description
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
Example 1: a broadband spectrometer comprising: the optical fiber beam collimator comprises an optical input port 1, a light shield 2, a beam collimator 3, a first flat glass 4, a second flat glass 5, 2 cylindrical lenses 6 and 2 linear photodetectors 7, wherein a separation frame 8 which is provided with a hollow area at the center and a wedge angle is arranged between the first flat glass 4 and the second flat glass 5 so as to form a sealed cavity, and the front surface of the first flat glass 4 is opposite to the rear surface of the second flat glass 5;
a small flat glass 9 with a thickness and located in the sealed cavity is arranged on one side of the front surface of the first flat glass 4, a first reflecting layer 101 is arranged on the other side of the front surface, the thickness of the small flat glass 9 is smaller than that of the isolation frame 8, a second reflecting layer 102 is arranged on the rear surface of the second flat glass 5, a third reflecting layer 103 is arranged on the surface of the small flat glass 9 opposite to the second flat glass 5, and the light shield 2 is arranged between the beam collimator 3 and the first flat glass 4 or between the second flat glass 5 and at least 2 linear photodetectors 7.
The optical input port 1 is an optical fiber input port.
The above-described linear photodetector 7 is a linear scanning image device.
The first, second, and third reflective layers 101, 102, and 103 have a reflectance of more than 30% and a transmittance of more than 50%.
Example 2: a broadband spectrometer comprising: the optical fiber beam collimator comprises an optical input port 1, a light shield 2, a beam collimator 3, a first flat glass 4, a second flat glass 5, 2 cylindrical lenses 6 and 2 linear photodetectors 7, wherein a separation frame 8 which is provided with a hollow area at the center and a wedge angle is arranged between the first flat glass 4 and the second flat glass 5 so as to form a sealed cavity, and the front surface of the first flat glass 4 is opposite to the rear surface of the second flat glass 5;
two small flat glass plates 9 with the thickness being smaller than that of the isolation frame 8 are arranged on one side of the front surface of the first flat glass plate 4 and located in the sealed cavity, a first reflection layer 101 is arranged on the other side of the front surface, the thickness of each small flat glass plate 9 is smaller than that of the corresponding isolation frame 8, the thickness of one small flat glass plate 9 is larger than that of the other small flat glass plate 9, a second reflection layer 102 is arranged on the rear surface of the second flat glass plate 5, a third reflection layer 103 is arranged on the surface, opposite to the small flat glass plates 9 and the second flat glass plate 5, of each small flat glass plate 9, and the light shield 2 is arranged between the beam collimator 3 and the first flat glass plate 4 or between the second flat glass plate 5 and the 2 linear photodetectors 7.
The optical input port 1 is an optical fiber input port.
The first plate glass 4, the second plate glass 5 and the spacer frame 8 are rectangular.
When the broadband spectral measuring instrument is adopted, the isolation frame with the hollowed-out area in the center and the wedge angle is arranged between the first flat glass and the second flat glass, so that a sealed cavity is formed, at least one small flat glass with the thickness being smaller than that of the isolation frame is arranged on one side of the front surface of the first flat glass, the small flat glass is located in the sealed cavity, the first reflection layer is arranged on the other side of the front surface of the first flat glass, the second reflection layer is arranged on the rear surface of the second flat glass, and the third reflection layer is arranged on the surface, opposite to the small flat glass and the second flat glass.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A broadband spectral measuring instrument is characterized in that: the method comprises the following steps: the optical fiber collimator comprises an optical input port (1), a light shield (2), a beam collimator (3), a first flat glass (4), a second flat glass (5), at least 2 cylindrical lenses (6) and at least 2 linear photodetectors (7), wherein a separation frame (8) with a hollow area in the center and a wedge angle is arranged between the first flat glass (4) and the second flat glass (5) so as to form a sealed cavity, and the front surface of the first flat glass (4) is opposite to the rear surface of the second flat glass (5);
the light-shielding structure is characterized in that at least one small plate glass (9) which is thick and is located in the sealed cavity is arranged on one side of the front surface of the first plate glass (4), a first reflecting layer (101) is arranged on the other side of the front surface of the first plate glass, the thickness of the small plate glass (9) is smaller than that of the isolating frame (8), a second reflecting layer (102) is arranged on the rear surface of the second plate glass (5), a third reflecting layer (103) is arranged on the surface, opposite to the small plate glass (9) and the second plate glass (5), of the small plate glass (9), and the light-shielding cover (2) is arranged between the beam collimator (3) and the first plate glass (4) or between the second plate glass (5) and at least 2 linear photodetectors (7).
2. The broadband spectrometer according to claim 1, wherein: the number of the small flat glass (9) is 2, wherein the thickness of one small flat glass (9) is larger than that of the other small flat glass (9).
3. The broadband spectrometer according to claim 1, wherein: the optical input port (1) is an optical fiber input port.
4. The broadband spectrometer according to claim 1, wherein: the linear photodetector (7) is a linear scanning image device.
5. The broadband spectrometer according to claim 1, wherein: the reflectivity of the first reflecting layer (101), the second reflecting layer (102) and the third reflecting layer (103) is more than 30%, and the transmissivity is more than 50%.
6. The broadband spectrometer according to claim 1, wherein: the first flat glass (4), the second flat glass (5) and the isolation frame (8) are rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855505.8U CN216012474U (en) | 2021-08-10 | 2021-08-10 | Broadband spectrum measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855505.8U CN216012474U (en) | 2021-08-10 | 2021-08-10 | Broadband spectrum measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216012474U true CN216012474U (en) | 2022-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121855505.8U Active CN216012474U (en) | 2021-08-10 | 2021-08-10 | Broadband spectrum measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216012474U (en) |
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2021
- 2021-08-10 CN CN202121855505.8U patent/CN216012474U/en active Active
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| GR01 | Patent grant | ||
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Address after: Building 5, No. 1508, Xiangjiang Road, Suzhou High-tech Zone, Suzhou City, Jiangsu Province 215129 Patentee after: Suzhou Lianxun Instrument Co.,Ltd. Address before: 215011 Building 5, no.1508 Xiangjiang Road, high tech Zone, Suzhou City, Jiangsu Province Patentee before: STELIGHT INSTRUMENT Inc. |