CN209878604U - Multifunctional photoelectric energy detection system with large dynamic range - Google Patents
Multifunctional photoelectric energy detection system with large dynamic range Download PDFInfo
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- CN209878604U CN209878604U CN201920123899.4U CN201920123899U CN209878604U CN 209878604 U CN209878604 U CN 209878604U CN 201920123899 U CN201920123899 U CN 201920123899U CN 209878604 U CN209878604 U CN 209878604U
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Abstract
The utility model relates to a photoelectric energy detection system, aiming at the problems of small dynamic range, single function, easy physical interference with the optical system structure and the like of the existing photoelectric energy detection unit, the utility model provides a multifunctional photoelectric energy detection system with large dynamic range, which comprises a detector power supply, a signal acquisition module, a three-axis electric control displacement platform and an integrating sphere component fixedly arranged on the three-axis electric control displacement platform; the integrating sphere assembly comprises an integrating sphere body, an optical signal guide cylinder and a photoelectric energy detection unit; one end of the optical signal guide cylinder is arranged at the light inlet of the integrating sphere body, the axis of the optical signal guide cylinder is parallel to the axis of the light inlet of the integrating sphere body, and the other end of the optical signal guide cylinder is provided with a steel star point plate; the steel star point plate is a cover body with a hole in the center, and the steel star point plate is buckled at the end head of the front end guide cylinder; the photoelectric energy detection unit is arranged at a light outlet of the integrating sphere body and is electrically connected with the detector power supply and the signal acquisition module.
Description
Technical Field
The utility model relates to a photoelectric energy detection system, concretely relates to multi-functional photoelectric energy detection system of big dynamic range.
Background
In recent years, with the increasing demand of aerospace and aviation products on optical systems (such as star sensors, airborne cameras and the like), the test indexes are gradually increased.
In order to judge whether the performance index of the product meets the development requirement, the stray light inhibition capability level of the product is obtained through a stray light test, the loss ratio of the product to the light is obtained through a transmittance test, and whether the light intensity distribution of the product image is uniform is obtained through an illumination uniformity test, so that the product becomes a necessary test item of various optical systems basically.
However, the conventional photoelectric energy detection unit has a small detection dynamic range and a single function (only one of the technical indexes such as stray light, transmittance and illuminance uniformity can be tested), and due to the unreasonable structural design, the photoelectric energy detection unit is easy to physically interfere with the structure of an optical system, so that the photoelectric energy detection unit is difficult to meet the actual use requirement.
Therefore, it is necessary to develop a photoelectric energy detection system with a wide dynamic range, multiple functions and a wide application range.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming that current photoelectric energy detection unit dynamic range is little, the function singleness, easily take place physical interference etc. not enough with the optical system structure, and provide a big dynamic range's multi-functional photoelectric energy detection system, this detection system can be applied to multiple optical system's detection, and is especially complicated to the optical system rear end structure, and general detection unit easily produces physical interference, leads to in the unable measuring optical system of parasitic light coefficient, transmissivity, illuminance homogeneity.
In order to achieve the above purpose, the utility model provides a technical scheme is: a multifunctional photoelectric energy detection system with a large dynamic range is characterized by comprising a detector power supply, a signal acquisition module, a three-axis electric control displacement table and an integrating sphere assembly fixedly arranged on the three-axis electric control displacement table; the integrating sphere assembly comprises an integrating sphere body, an optical signal guide cylinder and a photoelectric energy detection unit; one end of the optical signal guide cylinder is arranged at the light inlet of the integrating sphere body, the axis of the optical signal guide cylinder is parallel to the axis of the light inlet of the integrating sphere body, and the other end of the optical signal guide cylinder is provided with a steel star point plate; the steel star point plate is a cover body with a hole in the center, and the steel star point plate is buckled at the end head of the front end guide cylinder; the photoelectric energy detection unit is arranged at a light outlet of the integrating sphere body and is electrically connected with the detector power supply and the signal acquisition module. The detector power supply is used for supplying power to the photoelectric energy detection unit, and the signal acquisition module receives signals transmitted by the photoelectric energy detection unit.
Furthermore, an iris diaphragm used for adjusting the energy of an incident beam of the integrating sphere is arranged between the optical signal guide cylinder and the light inlet of the integrating sphere body. The iris diaphragm can effectively change the incident light energy entering the integrating sphere under the condition of not influencing the test spectrum, thereby increasing the dynamic range of the photoelectric energy detection system. If the iris diaphragm is selected to be adjustable from a smaller R1 to a larger R2, the adjustable dynamic range is R2 2/R1 2。
Further, the optical signal guiding barrel comprises a front end guiding barrel and a rear end guiding barrel which are coaxially and detachably connected; the rear end guide cylinder is of a hollow cylindrical structure and is arranged at the light inlet of the integrating sphere body; the front end guide cylinder is of a hollow cone structure, and the large end of the front end guide cylinder is connected with the rear end guide cylinder. The conical structure of the front-end guide cylinder can reduce the diameter of the steel star point template as much as possible, and further increase the application range of the detection system.
Furthermore, the end of the front guide cylinder is fixedly provided with a magnet for attracting and fixing the steel star point plate. The steel star point template is fixedly connected with the front end guide cylinder through the attraction force of the magnet, and the steel star point template can be quickly replaced only by lightly plugging; compared with a common thread fixing mode, the method is very convenient and quick, and the testing efficiency of the optical system is greatly improved.
Further, in order to more firmly adsorb the steel star point template, the magnet is an annular magnet, the end of the front end guide cylinder is recessed inwards to form an installation groove, and the annular magnet is embedded in the installation groove.
Furthermore, two sides of the integrating sphere body are respectively and symmetrically provided with a light outlet, and each light outlet is provided with a photoelectric energy detection unit.
Further, the photoelectric energy detection unit is a photoelectric detector.
Further, the photoelectric energy detection unit is a silicon-based detector or an indium gallium arsenic detector.
Further, the front end guide cylinder and the rear end guide cylinder are connected by a screw.
The utility model has the advantages that:
1. the utility model discloses a light signal guide section of thick bamboo that stretches out forward can stretch into some optical system rear end structures in the complicated optical system, has avoided the interference of detecting system and structure, makes its scope that is suitable for the optical device that awaits measuring wider.
2. Compared with the prior art for adjusting the brightness of the light source, the light source brightness adjusting range is limited by additionally arranging the diaphragm in front of the light source, and the test spectrum range can be changed by adjusting the voltage and the current of the light source, so that the test result is influenced. The utility model discloses set up the iris diaphragm between the light mouth is gone into to rear end guide cylinder and integrating sphere body, and the diaphragm before the cooperation light source can effectively change the incident light energy that gets into the integrating sphere under the condition that does not influence the test spectrum, and then increase photoelectric energy detection system's dynamic range.
3. The utility model embeds a magnet in the end of the front guide cylinder, the steel star point plate is fixedly connected with the front guide cylinder by the attraction of the magnet, and the steel star point plate can be replaced quickly by only lightly plugging; compared with a common thread fixing mode, the method is very convenient and quick, and the testing efficiency of the optical system can be greatly improved.
4. The utility model adopts the three-axis electric control displacement platform, which can accurately adjust the position of the light inlet of the detection system, is convenient for the position adjustment in the test of stray light coefficient and transmittance, and can also make the light inlet of the detection system perform two-dimensional scanning on the image surface position of the optical system, thereby realizing the detection of the illumination uniformity of the optical system; has the advantages of large dynamic range, multiple functions and wide application range.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of the photoelectric energy detection system of the present invention;
fig. 2 is a sectional view of an integrating sphere assembly according to a first embodiment of the present invention;
FIG. 3 is an exploded schematic view of the integrating sphere assembly of FIG. 2 (with the iris and integrating sphere body omitted);
FIG. 4 is a schematic view of the assembly of the optical signal guiding barrel and the steel star point plate of FIG. 3;
FIG. 5 is a cross-sectional view of the front end guide barrel of FIG. 4;
FIG. 6 is a cross-sectional view of the steel star point plate of FIG. 4;
fig. 7 is a schematic view of a connection structure between the optical signal guiding tube and the steel star point plate according to the second embodiment of the present invention.
The reference numerals in the drawings are explained as follows:
1-three-axis electric control displacement table;
2-integrating sphere assembly;
21-integrating sphere body, 22-variable diaphragm, 23-optical signal guiding cylinder, 231-rear end guiding cylinder, 232-front end guiding cylinder, 233-annular magnet, 24-photoelectric energy detection unit, and 25-steel star point plate;
3, a power box.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1, the present embodiment provides a large dynamic range multifunctional photoelectric energy detection system, which includes a three-axis electronic control displacement platform 1, and an integrating sphere assembly 2 and a power box 3 fixedly disposed on the three-axis electronic control displacement platform 1, wherein a detector power supply and a signal acquisition module are mounted in the power box 3. The signal acquisition module adopts an NI 9215BNC 4 channel AI module and is adapted to an NICDAQ-9181 Ethernet case.
Referring to fig. 1 and 2, the integrating sphere assembly 2 includes an integrating sphere body 21, an iris 22, an optical signal guiding cylinder 23, and a photoelectric energy detection unit 24; the type of the iris diaphragm 22 used in this embodiment is the scholar photo 7MD 122.
As shown in fig. 2 to 5, the optical signal guiding cylinder 23 includes a front end guiding cylinder 232 and a rear end guiding cylinder 231 which are coaxial and connected by a screw. The rear end guide cylinder 231 is a hollow cylindrical structure; the front end guide cylinder 232 is a hollow cone structure, and the large end thereof is sleeved on the end of the rear end guide cylinder 231. The rear end guide cylinder 231 is arranged at the light inlet of the integrating sphere body 21 through a flange, and the axis of the rear end guide cylinder is parallel to the axis of the light inlet of the integrating sphere body 21; the end of the front end guide cylinder 232 is recessed inwards to form a mounting groove, and a ring magnet 233 for attracting and fixing the steel star point plate 25 is embedded in the mounting groove. Referring to fig. 6, a steel star point plate 25 is a conical cover with a central opening, and is fastened to the front end guide cylinder 232 by the magnetic force of a ring magnet 233.
The iris 22 is disposed between the rear end guide cylinder 231 and the light inlet of the integrating sphere body 21 for adjusting the incident light beam energy of the integrating sphere.
Two photoelectric energy detection units 24 are respectively and fixedly arranged at the light outlet at two sides of the integrating sphere body 21; one of the photoelectric energy detection units 24 is a silicon-based detector, and the other photoelectric energy detection unit 24 is an indium gallium arsenic detector. The photoelectric energy detection unit 24 is electrically connected with a detector power supply and a signal acquisition module in the power box 3.
The iris diaphragm selected for the embodiment can be selected fromIs adjusted toAdjustable dynamic range of 202/12400; the small end of the front end guide cylinder 232 of the optical signal guide cylinder 23 has a diameter of 15mm and can be extended into an optical system with a complex rear end structure; the light-transmitting aperture of the front end guide cylinder 232 isThe light-passing aperture of the replaceable large diaphragm isThe system is provided with a three-axis electric control displacement platform, and the stroke of each axis is 200 mm.
Example two
The embodiment provides a large-dynamic-range multifunctional photoelectric energy detection system, which comprises a triaxial electronic control displacement table 1, an integrating sphere assembly 2 and a power box 3, wherein the integrating sphere assembly and the power box are fixedly arranged on the triaxial electronic control displacement table 1, and a detector power supply and a signal acquisition module are arranged in the power box 3. The signal acquisition module adopts an NI 9215BNC 4 channel AI module and is adapted to an NI CDAQ-9181 Ethernet case.
The integrating sphere assembly 2 includes an integrating sphere body 21, an iris 22, a light signal guiding cylinder 23, and a photoelectric energy detecting unit 24. The type of the iris diaphragm 22 used in this embodiment is the scholar photo 7MD 122.
As shown in fig. 7, unlike the first embodiment, the optical signal guiding barrel 23 of the present embodiment does not include the front end guiding barrel 232, and has no transition of the tapered section of the front end guiding barrel 232 in the first embodiment, and is always in a hollow straight barrel-shaped structure. The optical signal guide cylinder 23 with the hollow straight cylinder structure has a large diameter of the light inlet hole, can be matched with a diaphragm with a larger light passing aperture, and can enable the detection system to be suitable for more optical systems to be detected.
One end of the optical signal guide cylinder 23 is arranged at the light inlet of the integrating sphere body 21 through a flange, and the axis of the optical signal guide cylinder is parallel to the axis of the light inlet of the integrating sphere body 21; the other end is directly buckled with a steel star point plate 25 with an end cover structure with a central hole. The iris 22 is disposed between the rear end guide cylinder 231 and the light inlet of the integrating sphere body 21 for adjusting the incident light beam energy of the integrating sphere.
Two photoelectric energy detection units 24 are respectively and fixedly arranged at the light outlet at two sides of the integrating sphere body 21; one of the photoelectric energy detection units 24 is a silicon-based detector, and the other photoelectric energy detection unit 24 is an indium gallium arsenic detector. The photoelectric energy detection unit 24 is electrically connected with a detector power supply and a signal acquisition module in the power box 3.
The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art on the basis of the main technical idea of the present invention belong to the technical scope to be protected by the present invention.
Claims (9)
1. A multifunctional photoelectric energy detection system with a large dynamic range is characterized in that: the device comprises a detector power supply, a signal acquisition module, a three-axis electric control displacement table (1) and an integrating sphere assembly (2) fixedly arranged on the three-axis electric control displacement table (1);
the integrating sphere assembly (2) comprises an integrating sphere body (21), a light signal guide cylinder (23) and a photoelectric energy detection unit (24);
one end of the optical signal guide cylinder (23) is arranged at the light inlet of the integrating sphere body (21), the axis of the optical signal guide cylinder is parallel to the axis of the light inlet of the integrating sphere body (21), and the other end of the optical signal guide cylinder is provided with a steel star point plate (25);
the steel star point plate (25) is a cover body with a hole in the center, and the steel star point plate (25) is buckled at the end head of the front end guide cylinder (232);
the photoelectric energy detection unit (24) is arranged at a light outlet of the integrating sphere body (21), and the photoelectric energy detection unit (24) is electrically connected with a detector power supply and a signal acquisition module.
2. The high dynamic range multifunctional photoelectric energy detection system of claim 1, wherein: an iris diaphragm (22) for adjusting the energy of an incident beam of the integrating sphere is arranged between the optical signal guide cylinder (23) and the light inlet of the integrating sphere body (21).
3. A high dynamic range multifunctional photoelectric energy detection system according to claim 1 or 2, characterized in that: the optical signal guide barrel (23) comprises a front end guide barrel (232) and a rear end guide barrel (231) which are coaxially and detachably connected;
the rear end guide cylinder (231) is of a hollow cylindrical structure, and the rear end guide cylinder (231) is arranged at a light inlet of the integrating sphere body (21);
the front end guide cylinder (232) is of a hollow cone structure, and the large end of the front end guide cylinder is connected with the rear end guide cylinder (231).
4. The high dynamic range multifunctional photoelectric energy detection system of claim 3, wherein: and the end head of the front end guide cylinder (232) is fixedly provided with a magnet for attracting and fixing the steel star point plate (25).
5. The high dynamic range multifunctional photoelectric energy detection system of claim 4, wherein: the magnet is a ring magnet (233), the end of the front end guide cylinder (232) is recessed inwards to form an installation groove, and the ring magnet (233) is embedded in the installation groove.
6. The high dynamic range multifunctional photoelectric energy detection system of claim 5, wherein: two sides of the integrating sphere body (21) are respectively and symmetrically provided with a light outlet, and each light outlet is provided with a photoelectric energy detection unit (24).
7. The high dynamic range multifunctional photoelectric energy detection system of claim 6, wherein: the photoelectric energy detection unit (24) is a photoelectric detector.
8. The high dynamic range multifunctional photoelectric energy detection system of claim 6, wherein: the photoelectric energy detection unit (24) is a silicon-based detector or an indium gallium arsenic detector.
9. The high dynamic range multifunctional photoelectric energy detection system of claim 8, wherein: the front end guide barrel (232) and the rear end guide barrel (231) are connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123899.4U CN209878604U (en) | 2019-01-24 | 2019-01-24 | Multifunctional photoelectric energy detection system with large dynamic range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123899.4U CN209878604U (en) | 2019-01-24 | 2019-01-24 | Multifunctional photoelectric energy detection system with large dynamic range |
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| Publication Number | Publication Date |
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| CN209878604U true CN209878604U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920123899.4U Active CN209878604U (en) | 2019-01-24 | 2019-01-24 | Multifunctional photoelectric energy detection system with large dynamic range |
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