CN112834462A - Method for measuring reflectivity of reflector - Google Patents
Method for measuring reflectivity of reflector Download PDFInfo
- Publication number
- CN112834462A CN112834462A CN202011631353.3A CN202011631353A CN112834462A CN 112834462 A CN112834462 A CN 112834462A CN 202011631353 A CN202011631353 A CN 202011631353A CN 112834462 A CN112834462 A CN 112834462A
- Authority
- CN
- China
- Prior art keywords
- reflectivity
- assembly
- reflector
- energy
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a method for measuring the reflectivity of a reflector, which mainly comprises the steps of aligning an optical axis and collecting total energy m1Rotating the energy emitting assembly angle, correspondingly adjusting the detector assembly angle, and collecting the reflected energy m2Calculating the reflectivity; the method and the device have the advantages that the reflectivity of the reflector can be accurately measured in unlimited scenes, namely in bright scenes or dark scenes, the method and the device are simple and easy to operate, the influence of external stray light on a test system is effectively avoided, the reflectivity test is more accurate, the structure is simple, and the carrying is convenient.
Description
Technical Field
The invention belongs to the technical field of reflector measurement, and particularly relates to a method for measuring the reflectivity of a reflector.
Background
With the rapid development of the observation field in China, photoelectric detection equipment applied to an external field is widely applied, a reflector is one of core components of the photoelectric detection equipment in an imaging system, and the reflectivity of the photoelectric detection equipment directly influences the imaging quality of the system. Because the reflector is used in an external field, the imaging quality is reduced due to factors such as dust, mould and the like, and the periodic test of the reflectivity of the reflector is very important, so that the maintenance is carried out according to the measurement result, and the imaging quality is ensured. In the traditional reflectivity test, an integrating sphere is generally placed at the receiving end of a detector for light uniformization and then the integrating sphere is received by a photoelectric detector, the test can only be completed in a darkroom environment, and the photoelectric detection equipment of an external field has large volume and is difficult to move, and needs to be calibrated again after moving, so that the test time and the cost are increased; however, the conventional method is not suitable for the external field environment due to the ambient background light.
Disclosure of Invention
The present invention has been made to solve the above problems, and in view of the above description, the present invention needs to design a method for measuring a reflectivity of a mirror suitable for an external field environment, which is not limited to a dark environment or a bright environment, and does not require an external environment condition, so as to overcome the drawbacks and disadvantages of the prior art. The method specifically comprises the following steps:
a method for measuring the reflectivity of a reflector comprises the following steps:
s1, adjusting the optical path system to align the optical axis of the energy generation assembly with the detector assembly, wherein the detector assembly images all the light beams of the energy generation assembly;
s2 recording the total energy value m of imaging on the CCD camera in the detector assembly in the step S11；
S3, rotating the energy generation assembly to enable the energy generation assembly to form a certain angle with the horizontal direction, and enabling the energy generation assembly to emit light beams to the reflector to be detected;
s4, adjusting the angle of the detector assembly, and reflecting all received light beams to the detector assembly by the reflector to be detected;
s5 recording the total energy value m of imaging on the CCD camera in the detector assembly in the step S42；
S5, calculating the reflectivity epsilon of the reflector to be measured:
preferably, the first angle in step S3 includes that the light beam emitted by the energy generating assembly is emitted obliquely upward to the mirror to be measured.
Preferably, the light beam emitted by the energy generation assembly is a parallel light beam.
Preferably, the energy generator assembly comprises a light source and a collimation system for controlling the path of the light beam emitted by the light source.
Preferably, the detector assembly further comprises an imaging lens through which the light beam is transmitted into the CCD camera.
Preferably, the aperture of the imaging lens is larger than the aperture of the collimation system.
Has the advantages that: the method for measuring the reflector is not limited to scenes, namely, the reflectivity of the reflector can be accurately measured no matter in bright scenes or dark scenes, the testing method is simple and easy to operate, the influence of external stray light on a testing system is effectively avoided, the reflectivity test is more accurate, the structure is simple, and the carrying is convenient.
Drawings
FIG. 1 is a block diagram of one embodiment of the present invention.
Description of the drawings: the device comprises an energy generation assembly 1, a collimation system 1-1, a light source 1-2, a detector assembly 2, an imaging lens 2-1, a CCD camera 2-2, a normal 3, incident light 4 of a system to be detected and a reflector 5 to be detected.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second, third, etc. are used herein to describe various components or features, but these components or features are not limited by these terms. These terms are only used to distinguish one element or part from another element or part. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. For convenience of description, spatially relative terms such as "inner", "outer", "upper", "lower", "left", "right", "upper", "left", "right", and the like are used herein to describe the orientation relation of the components or parts in the present embodiment, but these spatially relative terms do not limit the orientation of the technical features in practical use.
A method for measuring the reflectivity of a mirror as shown in fig. 1 comprises the following steps:
s1, adjusting an optical path system to align the optical axis of the energy generation assembly 1 with the detector assembly 2, wherein the detector assembly 2 images all light beams of the energy generation assembly 1;
s2 records the total energy value m of imaging on the CCD camera 2-2 in the detector assembly 2 in the step S11；
S3, the energy generation assembly 1 is rotated to enable the energy generation assembly 1 to form a certain angle with the horizontal direction, and the energy generation assembly 1 emits light beams to the reflector 5 to be measured;
s4, adjusting the angle of the detector assembly 2, and the reflector 5 to be measured reflects all the received light beams to the detector assembly 2;
s5 records the total energy value m of imaging on the CCD camera 2-2 in the detector assembly 2 in the step S42；
S5 calculates the reflectance e of the mirror 5 to be measured:
the measuring method of the invention specifically comprises the following steps:
firstly, the method mainly comprises the steps of aligning the optical axis and collecting the total energy m1Rotating the energy emitting assembly, correspondingly adjusting the angle of the detector assembly 2, and collecting the reflected energy m2Calculating the reflectivity; step S1 is alignment of the optical axis, that is, the light emitted from the energy generating assembly 1 can be received by the detector assembly 2, and the light beam provided by the energy generator assembly is a parallel light beam with uniform energy; then, in step S2, the CCD camera 2-2 in the detector assembly 2 records the energy of the imaging result in the detector assembly 2, which is m1Then, the operations of steps S3 and S4 are performed, and steps S3 and S4 are only to align the post-reflection optical axes.
The specific operations of step S3 and step S4 are as shown in fig. 1, the exit angle of the beam of the energy generator module needs to be adjusted, and it needs to be ensured that the light is not received by other reflectors after being reflected by the reflector 5 to be measured, because the system under the method is used in cooperation with other optical paths in actual operation, after the energy generator module is rotated, it needs to be ensured that the light emitted by the energy generator module is completely received by the detector module 2 after being reflected by the reflector 5 to be measured, in which:
the energy generation assembly 1 is rotated by a certain angle, the angle of the detector assembly 2 is adjusted to align the light rays of the parallel light beams emitted by the energy generation assembly 1 after being reflected by the reflector 5 to be detected, the reflected light rays can be completely imaged to the detector assembly 2, the parallel light incident angle of the energy generation assembly 1 is positioned between the incident light 4 of the system to be detected and the normal 3 of the system to be detected, and the shielding influence of other structures of the photoelectric detection equipment on the reflected light rays can be avoided by the angle.
In a preferred embodiment, the first angle in step S3 includes that the light beam emitted from the energy generating assembly 1 is emitted obliquely upward to the mirror 5 to be measured. The light beam emitted by the energy generating assembly 1 is a parallel light beam. The energy generator assembly comprises a light source 1-2 and a collimation system 1-1 for controlling the path of the light beam emitted by the light source 1-2. The detector assembly 2 further comprises an imaging lens 2-1, and the light beam is transmitted to the CCD camera 2-2 through the imaging lens 2-1. The aperture of the imaging lens 2-1 is larger than that of the collimation system 1-1.
The principle of the method is as follows: the method comprises an energy generating assembly 1 and a detector assembly 2. The energy generation assembly 1 is used for providing uniform parallel light energy input for a test system and consists of a collimation system 1-1 and a light source 1-2; the detector component 2 is used for receiving total energy emitted by the energy generation component 1 and energy reflected by a reflector 5 to be detected, the detector component 2 is used for blocking stray light of an external environment, the detector component 2 is composed of an imaging lens 2-1 and a CCD camera 2-2, the imaging lens 2-1 is used for imaging the received light to a camera target surface, the imaging lens 2-1 is used for blocking the stray light generated by the external environment, the caliber of the imaging lens 2-1 is larger than that of the collimation system 1-1, so that the light emitted by the energy generation component 1 can be completely imaged to the CCD camera 2-2, and the CCD camera 2-2 is used for imaging the received light and displaying the imaged light in an energy value form. Energy m received by the detector assembly 21、m2And comparing to obtain the reflectivity of the reflecting mirror of the photoelectric detection equipment in the external field environment.
The method for measuring the reflector is not limited to scenes, namely, the reflectivity of the reflector can be accurately measured no matter in bright scenes or dark scenes, the testing method is simple and easy to operate, the influence of external stray light on a testing system is effectively avoided, the reflectivity test is more accurate, the structure is simple, and the carrying is convenient.
The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.
Claims (6)
1. A method for measuring the reflectivity of a reflector is characterized by comprising the following steps:
s1, adjusting an optical path system to align the optical axis of the energy generation assembly (1) with the detector assembly (2), wherein the detector assembly (2) images all light beams of the energy generation assembly (1);
s2 recording the total imaging energy value m on the CCD camera (2-2) in the detector assembly (2) in the step S11；
S3, the energy generation assembly (1) is rotated to enable the energy generation assembly (1) to form a certain angle with the horizontal direction, and the energy generation assembly (1) emits light beams to the reflector (5) to be measured;
s4, adjusting the angle of the detector assembly (2), and reflecting all received light beams to the detector assembly (2) by the reflector (5) to be detected;
s5 recording the total imaging energy value m on the CCD camera (2-2) in the detector assembly (2) in the step S42；
S6, calculating the reflectivity epsilon of the reflector (5) to be measured:
2. the method for measuring the reflectivity of a reflective mirror according to claim 1, wherein the first angle in step S3 includes that the light beam emitted from the energy generating assembly (1) is emitted obliquely upward to the reflective mirror (5) to be measured.
3. The method for measuring the reflectivity of a mirror according to claim 1, wherein the light beam emitted from the energy generating assembly (1) is a parallel light beam.
4. A method for measuring the reflectivity of a mirror according to claim 1, wherein the energy generator assembly comprises a light source (1-2) and a collimating system (1-1) for controlling the path of the light beam emitted by the light source (1-2).
5. The method for measuring the reflectivity of a mirror according to claim 1, wherein the detector assembly (2) further comprises an imaging lens (2-1), and the light beam is transmitted into the CCD camera (2-2) through the imaging lens (2-1).
6. Method for measuring the reflectivity of mirrors according to any of claims 4 or 5, characterized in that the aperture of the imaging lens (2-1) is larger than the aperture of the collimation system (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631353.3A CN112834462A (en) | 2020-12-31 | 2020-12-31 | Method for measuring reflectivity of reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011631353.3A CN112834462A (en) | 2020-12-31 | 2020-12-31 | Method for measuring reflectivity of reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112834462A true CN112834462A (en) | 2021-05-25 |
Family
ID=75924886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011631353.3A Pending CN112834462A (en) | 2020-12-31 | 2020-12-31 | Method for measuring reflectivity of reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112834462A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418895A (en) * | 2021-06-30 | 2021-09-21 | 中国人民解放军63921部队 | Specular reflectivity measuring method and device for large-caliber telescope |
| CN113466182A (en) * | 2021-06-30 | 2021-10-01 | 中国人民解放军63921部队 | Specular reflectivity measuring method and device for medium-caliber telescope |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070268481A1 (en) * | 2006-05-17 | 2007-11-22 | Ramesh Raskar | System and method for measuring scene reflectance using optical sensors |
| CN102607806A (en) * | 2012-02-23 | 2012-07-25 | 科纳技术(苏州)有限公司 | System for detecting reflectivity of plane mirror |
| CN204308408U (en) * | 2014-12-02 | 2015-05-06 | 大族激光科技产业集团股份有限公司 | Laser Machining head and laser process equipment |
| CN106996922A (en) * | 2016-01-25 | 2017-08-01 | 杭州海康威视数字技术股份有限公司 | A kind of target object infrared reflectivity measurement method and device |
-
2020
- 2020-12-31 CN CN202011631353.3A patent/CN112834462A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070268481A1 (en) * | 2006-05-17 | 2007-11-22 | Ramesh Raskar | System and method for measuring scene reflectance using optical sensors |
| CN102607806A (en) * | 2012-02-23 | 2012-07-25 | 科纳技术(苏州)有限公司 | System for detecting reflectivity of plane mirror |
| CN204308408U (en) * | 2014-12-02 | 2015-05-06 | 大族激光科技产业集团股份有限公司 | Laser Machining head and laser process equipment |
| CN106996922A (en) * | 2016-01-25 | 2017-08-01 | 杭州海康威视数字技术股份有限公司 | A kind of target object infrared reflectivity measurement method and device |
Non-Patent Citations (1)
| Title |
|---|
| 帅永 等: "《热辐射测量技术》", 31 August 2014 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418895A (en) * | 2021-06-30 | 2021-09-21 | 中国人民解放军63921部队 | Specular reflectivity measuring method and device for large-caliber telescope |
| CN113466182A (en) * | 2021-06-30 | 2021-10-01 | 中国人民解放军63921部队 | Specular reflectivity measuring method and device for medium-caliber telescope |
| CN113418895B (en) * | 2021-06-30 | 2022-04-08 | 中国人民解放军63921部队 | Specular reflectivity measuring method and device for large-caliber telescope |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109100876B (en) | Multi-optical-axis parallel adjusting device and multi-optical-axis parallel adjusting method | |
| JP5721070B2 (en) | Optical property measuring device | |
| CN101210806B (en) | measuring method of angle deviation along azimuth axis direction and pitching angle deviation of laser emission axis and mechanical base level normal based on secondary light source | |
| US6862097B2 (en) | Three-dimensional shape measuring method, and three-dimensional shape measuring apparatus | |
| CN208520336U (en) | Laser datum bridge Multi-point deflection vision inspection apparatus | |
| CN105784335B (en) | The fill-in light calibration device and method of a kind of reference-calibrating mirror normal direction | |
| CN102564611B (en) | High-power laser wave front measuring instrument and wave front measuring method | |
| RU2670809C2 (en) | Surface roughness measurement device | |
| CN110662020B (en) | Transfer function testing system and method based on auto-collimation principle | |
| CN110146259A (en) | A kind of reflective multi-light axis consistency quantitative test of large-caliber off-axis and calibrating installation | |
| CN100442010C (en) | Single-photodetector confocal laser triangulation device | |
| CN208506390U (en) | Parallelism of optical axis regulating device for multiple light path systems | |
| CN106767545A (en) | A kind of high accuracy high-space resolution angel measuring instrument and angle measurement method | |
| CN112834462A (en) | Method for measuring reflectivity of reflector | |
| CN105044704A (en) | High precision spaceborne laser transmitter performance integrated test system | |
| CN100588919C (en) | Device for measuring radiation and scattered light field three dimensional distribution | |
| CN101922932B (en) | Compensating device of pyramid prism coordinate measuring error | |
| CN109358435B (en) | Device and method for adjusting perpendicularity of double telecentric lenses | |
| JP2002181698A (en) | Spectral reflectance measuring apparatus and method | |
| CN209147932U (en) | A kind of laser imaging range-measurement system | |
| KR100763974B1 (en) | Method and apparatus for aligning optical axis for wavefront sensor for mid-infrared band | |
| US7531775B1 (en) | Photometer for tracking a moving light source | |
| CN102809351A (en) | Wall thickness detecting device and wall thickness detecting method for transparent and semitransparent glass bottles | |
| CN109000591A (en) | A kind of bias difference measuring instrument | |
| CN109405749A (en) | A kind of laser imaging distance measuring method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |