CN116718154B - Optical instrument for measuring incidence angle of light beam - Google Patents
Optical instrument for measuring incidence angle of light beam Download PDFInfo
- Publication number
- CN116718154B CN116718154B CN202311003496.3A CN202311003496A CN116718154B CN 116718154 B CN116718154 B CN 116718154B CN 202311003496 A CN202311003496 A CN 202311003496A CN 116718154 B CN116718154 B CN 116718154B
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- optical probe
- optical
- central line
- probe
- light
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- 230000003287 optical effect Effects 0.000 title claims abstract description 175
- 239000000523 sample Substances 0.000 claims abstract description 153
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 230000001502 supplementing effect Effects 0.000 abstract description 4
- 239000013589 supplement Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
Abstract
An optical instrument for measuring the incidence angle of a light beam comprises a controller, wherein a first optical probe, a second optical probe and a third optical probe are arranged on a mounting seat, the central line of the first optical probe is intersected with the central line of the second optical probe and the central line of the third optical probe at one point and is not on the same plane, the plane of the central line of the first optical probe and the central line of the second optical probe is vertical to the plane of the central line of the first optical probe and the central line of the third optical probe, and the output ends of the first optical probe, the second optical probe and the third optical probe are connected with the controller; the invention adopts three optical probes with a certain included angle to measure the optical signal intensity of the fixed light source to the measuring position of the invention, and the included angle of the three optical probes and the detected optical signal intensity can accurately obtain the incident angle of the light beam, thereby providing accurate basic data for more accurately detecting the optical parameters of the road monitoring light supplementing lamp at the measuring station.
Description
Technical Field
The invention belongs to the technical field of optical instruments, and particularly relates to an optical instrument for measuring an incident angle of a light beam.
Background
Along with the development of intelligent traffic systems, higher requirements are also put forward on the quality of a road traffic light supplementing system, and a road monitoring camera is required to clearly and truly shoot license plate numbers and road conditions in the environments with insufficient light or at night, so that enough evidence is provided for traffic law enforcement and monitoring. In order to more clearly photograph a subject, a light compensating lamp is widely used in a road traffic system.
Under the condition that a single light source emits parallel light or nearly parallel light, an illuminometer is generally used for measuring illumination (unit: lx) of a designated position and a designated angle direction, and the current traffic monitoring light supplement lamp is measured by adopting an illuminometer.
Disclosure of Invention
The invention aims to provide an optical instrument for measuring the incident angle of a light beam, which has reasonable design, simple structure and convenient use.
The technical scheme adopted for solving the technical problems is as follows: an optical instrument for measuring the incidence angle of light beam is composed of a controller, a cube with a first optical probe, a second optical probe and a third optical probe on its installing seat, and an included angle beta between the central lines of said first optical probe and the second optical probe 12 Is an acute angle or a right angle, and the included angle beta between the central line of the first optical probe and the central line of the third optical probe 13 The output ends of the first optical probe, the second optical probe and the third optical probe are connected with the controller;
the controller obtains a space light beam incident angle theta according to the intensity of the light signals collected by the first light probe, the second light probe and the third light probe and the following steps;
wherein E is 1 For the intensity of the optical signal acquired by the first optical probe, E 2 For the intensity of the optical signal acquired by the second optical probe, E 3 The intensity of the optical signal acquired by the third optical probe.
As a preferable scheme, the included angle beta between the central line of the first optical probe and the central line of the second optical probe 12 Is 30-90 degrees, and the included angle beta between the central line of the first optical probe and the central line of the third optical probe 13 Is 30-90 degrees.
As a preferred solution, the mount is made of a light-impermeable material.
The beneficial effects of the invention are as follows:
the invention adopts three optical probes with a certain included angle to measure the optical signal intensity of the fixed light source to the measuring position of the invention, and can accurately obtain the incidence angle of the light beam by utilizing the included angle of the three optical probes and the detected optical signal intensity, thereby providing accurate basic data for more accurately detecting the optical parameters of the road monitoring light supplementing lamp at the measuring station.
Drawings
Fig. 1 is a schematic diagram of the structure of an optical instrument for measuring the incident angle of a light beam according to the present invention.
Fig. 2 is a right side view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, but the present invention is not limited to the following embodiments.
Example 1
Taking the illuminance and the spatial angle of the road monitoring light supplement lamp caused to the vehicle driver as an example, the optical instrument for measuring the incident angle of the light beam of the embodiment is placed under a certain road monitoring light supplement lamp in an inclined manner and at a certain height from the ground.
In fig. 1 and 2, the optical instrument for measuring the incident angle of a light beam according to the present embodiment is configured by connecting a first optical probe 1, a second optical probe 2, a third optical probe 3, a mount 4, and a controller 5. The first optical probe 1, the second optical probe 2 and the third optical probe 3 are arranged on the light-tight mounting seat 4, the central line of the first optical probe 1 intersects with the central line of the second optical probe 2 and the central line of the third optical probe 3 at a point which is not on the same plane, the plane of the central line of the first optical probe 1 and the central line of the second optical probe 2 is vertical to the plane of the central line of the first optical probe 1 and the central line of the third optical probe 3, and the included angle beta between the central line of the first optical probe 1 and the central line of the second optical probe 2 12 At 90 °, the angle β between the centre line of the first optical probe 1 and the centre line of the third optical probe 3 13 The output ends of the first optical probe 1, the second optical probe 2 and the third optical probe 3 are connected with the controller 5 at 90 degrees; the first optical probe 1, the second optical probe 2 and the third optical probe 3 are used for collectingThe controller 5 obtains the incident angle theta of the light beam according to the following formula according to the light signal intensity collected by the first light probe 1, the second light probe 2 and the third light probe 3,
wherein E is 1 For the intensity of the optical signal acquired by the first optical probe 1, E 1 =50，E 2 For the intensity of the optical signal acquired by the second optical probe 2, E 2 =50，E 3 For the intensity of the optical signal acquired by the third optical probe 3, E 3 =50, θ=54.74 °.
The working principle of the invention is as follows:
according to the requirements in the national metrology and verification protocol of the people's republic of China JJG 245-1005, illuminometer 5.3 cosine characteristic (directional response) error 6.3.3.3: the optical head should make the response of the light projected onto it conform to the cosine law. Thereby obtaining the total light signal intensity E emitted by the light supplementing lamp for road monitoring and the light signal intensity E collected by the first light probe 1 1 And the intensity E of the optical signal acquired by the second optical probe 2 2 The relation of (2) is:
in the method, in the process of the invention,the angle between the projection of the light beam on the plane where the central line of the first optical probe 1 and the central line of the second optical probe 2 are positioned and the central line of the first optical probe 1;
thenThereby obtaining
；
The same applies to the first optical probe 1 center line to obtain the light beamAnd the angle between the projection of the central line of the third optical probe 3 on the plane and the central line of the first optical probe 1，
；
According to the incident angle theta and the incident angle thetaAnd->Is>Thereby obtaining
。
Example 2
The optical instrument for measuring the incidence angle of the light beam of the present embodiment is composed of a first optical probe 1, a second optical probe 2, a third optical probe 3, a mounting base 4, and a controller 5 which are connected. The first optical probe 1, the second optical probe 2 and the third optical probe 3 are arranged on the mounting seat 4, the central line of the first optical probe 1 intersects with the central line of the second optical probe 2 and the central line of the third optical probe 3 at a point which is not on the same plane, the central line of the first optical probe 1 is vertical to the plane of the central line of the second optical probe 2 and the plane of the central line of the first optical probe 1 and the central line of the third optical probe 3, and the central line of the first optical probe 1 is vertical to the central line of the second optical probe 2 12 At 60 °, the angle β between the centre line of the first optical probe 1 and the centre line of the third optical probe 3 13 The output ends of the first optical probe 1, the second optical probe 2 and the third optical probe 3 are connected with the controller 5 at 60 degrees; the controller 5 obtains the incident angle theta of the light beam according to the following formula according to the intensity of the light signals collected by the first light probe 1, the second light probe 2 and the third light probe 3,
wherein E is 1 For the intensity of the optical signal acquired by the first optical probe 1, E 1 =50，E 2 For the intensity of the optical signal acquired by the second optical probe 2, E 2 =40，E 3 For the intensity of the optical signal acquired by the third optical probe 3, E 3 =40, θ= 26.10 °.
Example 3
The optical instrument for measuring the incidence angle of the light beam of the present embodiment is composed of a first optical probe 1, a second optical probe 2, a third optical probe 3, a mounting base 4, and a controller 5 which are connected. The first optical probe 1, the second optical probe 2 and the third optical probe 3 are arranged on the mounting seat 4, the central line of the first optical probe 1 intersects with the central line of the second optical probe 2 and the central line of the third optical probe 3 at a point which is not on the same plane, the central line of the first optical probe 1 is vertical to the plane of the central line of the second optical probe 2 and the plane of the central line of the first optical probe 1 and the central line of the third optical probe 3, and the central line of the first optical probe 1 is vertical to the central line of the second optical probe 2 12 At 60 °, the angle β between the centre line of the first optical probe 1 and the centre line of the third optical probe 3 13 The output ends of the first optical probe 1, the second optical probe 2 and the third optical probe 3 are connected with the controller 5 at 90 degrees; the controller 5 obtains the incident angle theta of the light beam according to the following formula according to the intensity of the light signals collected by the first light probe 1, the second light probe 2 and the third light probe 3,
wherein E is 1 For the intensity of the optical signal acquired by the first optical probe 1, E 1 =100，E 2 For the intensity of the optical signal acquired by the second optical probe 2, E 2 =50，E 3 For the intensity of the optical signal acquired by the third optical probe 3, E 3 =30, θ=16.70 °.
Claims (3)
1. An optical instrument for measuring the angle of incidence of a light beam, comprising a controller, characterized in that: the mounting seat of the cube is provided with a firstA first optical probe, a second optical probe and a third optical probe, wherein the central line of the first optical probe intersects with the central line of the second optical probe and the central line of the third optical probe at a point and is not in the same plane, the plane of the central line of the first optical probe and the central line of the second optical probe is perpendicular to the plane of the central line of the first optical probe and the central line of the third optical probe, and the included angle beta between the central lines of the first optical probe and the second optical probe 12 Is an acute angle or a right angle, and the included angle beta between the central line of the first optical probe and the central line of the third optical probe 13 The output ends of the first optical probe, the second optical probe and the third optical probe are connected with the controller;
the controller obtains a space light beam incident angle theta according to the intensity of the light signals collected by the first light probe, the second light probe and the third light probe and the following steps;
wherein E is 1 For the intensity of the optical signal acquired by the first optical probe, E 2 For the intensity of the optical signal acquired by the second optical probe, E 3 The intensity of the optical signal acquired by the third optical probe.
2. The optical instrument for measuring an angle of incidence of a light beam according to claim 1, wherein: an included angle beta between the central line of the first optical probe and the central line of the second optical probe 12 Is 30-90 degrees, and the included angle beta between the central line of the first optical probe and the central line of the third optical probe 13 Is 30-90 degrees.
3. The optical instrument for measuring an angle of incidence of a light beam according to claim 1, wherein: the mount is made of an opaque material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311003496.3A CN116718154B (en) | 2023-08-10 | 2023-08-10 | Optical instrument for measuring incidence angle of light beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311003496.3A CN116718154B (en) | 2023-08-10 | 2023-08-10 | Optical instrument for measuring incidence angle of light beam |
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| Publication Number | Publication Date |
|---|---|
| CN116718154A CN116718154A (en) | 2023-09-08 |
| CN116718154B true CN116718154B (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311003496.3A Active CN116718154B (en) | 2023-08-10 | 2023-08-10 | Optical instrument for measuring incidence angle of light beam |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210280A (en) * | 2008-02-29 | 2009-09-17 | Toyama Univ | Azimuth sensor device |
| CN103616012A (en) * | 2013-11-29 | 2014-03-05 | 天津孚感科技有限公司 | Method for measuring incident angle of parallel light and photoelectric angle sensor |
| CN103760379A (en) * | 2013-12-20 | 2014-04-30 | 西安工业大学 | Correction and test system and method for miss distance of large target surface |
| JP2014228514A (en) * | 2013-05-27 | 2014-12-08 | 三菱電機株式会社 | Angle calibrator and angle calibration method |
| CN208805281U (en) * | 2018-06-04 | 2019-04-30 | 吉林工程技术师范学院 | A kind of laser energy meter probe |
| CN214251479U (en) * | 2021-08-24 | 2021-09-21 | 武汉精测电子集团股份有限公司 | Measuring equipment for light beam visual angle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7465916B2 (en) * | 2006-10-19 | 2008-12-16 | Fujikura Ltd. | Optical detection sensor |
-
2023
- 2023-08-10 CN CN202311003496.3A patent/CN116718154B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210280A (en) * | 2008-02-29 | 2009-09-17 | Toyama Univ | Azimuth sensor device |
| JP2014228514A (en) * | 2013-05-27 | 2014-12-08 | 三菱電機株式会社 | Angle calibrator and angle calibration method |
| CN103616012A (en) * | 2013-11-29 | 2014-03-05 | 天津孚感科技有限公司 | Method for measuring incident angle of parallel light and photoelectric angle sensor |
| CN103760379A (en) * | 2013-12-20 | 2014-04-30 | 西安工业大学 | Correction and test system and method for miss distance of large target surface |
| CN208805281U (en) * | 2018-06-04 | 2019-04-30 | 吉林工程技术师范学院 | A kind of laser energy meter probe |
| CN214251479U (en) * | 2021-08-24 | 2021-09-21 | 武汉精测电子集团股份有限公司 | Measuring equipment for light beam visual angle |
Non-Patent Citations (2)
| Title |
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| 朱小清 ; .照度计余弦特性测试方法.计量技术.(07),全文. * |
| 照度计余弦特性测试方法;朱小清;;计量技术(07);全文 * |
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| CN116718154A (en) | 2023-09-08 |
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