CN114166476A - Optical axis parallelism detection method - Google Patents
Optical axis parallelism detection method Download PDFInfo
- Publication number
- CN114166476A CN114166476A CN202111462695.1A CN202111462695A CN114166476A CN 114166476 A CN114166476 A CN 114166476A CN 202111462695 A CN202111462695 A CN 202111462695A CN 114166476 A CN114166476 A CN 114166476A
- Authority
- CN
- China
- Prior art keywords
- light pipe
- light
- auto
- refraction
- collimation
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The invention provides an optical axis parallelism detection method, which comprises the following steps: s1, pre-installation step: s101, collimating emergent light of an auto-collimation light pipe and a parallel light source; s102, placing a refraction element between the auto-collimation light pipe and the parallel light source and determining the position of the refraction element; s103, placing a folding light pipe between the auto-collimation light pipe and the refraction element; s2, detecting the folded light conversion tube: the light beam emitted by the parallel light source enters the refraction element after passing through the refraction light pipe, the light beam enters the auto-collimation light pipe after being refracted by the refraction element, and the auto-collimation light pipe measures optical axis parallelism errors delta alpha and delta beta of the refraction light pipe; when Δ α and Δ β are zero, it indicates that there is no parallelism error in the folded light pipe in both the horizontal and vertical directions. The parallelism detection is carried out under the condition that a plane mirror is not used as a detection tool by the mode that the pentaprism is matched with the deflection light pipe, so that the detection applicability is improved.
Description
Technical Field
The invention relates to the technical field of optical detection, in particular to a method for detecting parallelism of an optical axis.
Background
The application of the deflection light pipe as a light deflection device in an optical system is becoming more and more extensive, and now becomes a typical optical device. When the device is used, the precision of the folded light pipe, namely the optical axis parallelism error of the folded light pipe caused by the relative installation positions of the two reflectors in the folded light pipe, is high, so the device is very important for detecting the optical axis parallelism error of the folded light pipe. At present, the parallelism error of the optical axis of the bending light pipe is usually detected by adopting a plane mirror reflection method. An autocollimator and a flat mirror with dimensions larger than the distance between the optical axes of the bending light pipes are required. After the autocollimator and the plane mirror are autocollimated, the horizontal reading alpha of the autocollimator is read0And high and low readings beta0. And under the condition of keeping the autocollimator and the plane mirror unchanged after reading, placing the folding light tube between the autocollimator and the plane mirror and adjusting the placing position of the folding light tube, so that the incident light of the autocollimator 1 keeps the full aperture, enters the folding light tube, is folded to the plane mirror and then returns to the autocollimator. The level reading α and the high-low reading β of the autocollimator 1 at this time are read. The optical axis parallelism error of the folded light pipe is:
horizontal error: Δ α ═ α - α0
High-low error: Δ β ═ β - β0
The existing method for detecting the parallelism of the optical axis of the folding light pipe has to use a plane mirror with a longer optical axis distance than the folding light pipe for detection, and the parallelism of the optical axis of the folding light pipe cannot be detected under the condition that the plane mirror cannot meet the requirement.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an optical axis parallelism detecting method, which can detect parallelism without using a plane mirror as a detecting tool by matching a pentaprism with a folded light pipe, thereby improving detection applicability.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
the invention provides an optical axis parallelism detection method, which comprises the following steps:
s1, pre-installation step:
s101, collimating emergent light of an auto-collimation light pipe and a parallel light source;
s102, placing a refraction element between the auto-collimation light pipe and the parallel light source and determining the position of the refraction element;
s103, placing a folding light pipe between the auto-collimation light pipe and the refraction element;
s2, detecting the folded light conversion tube:
the light beam emitted by the parallel light source enters the refraction element after passing through the refraction light pipe, the light beam enters the auto-collimation light pipe after being refracted by the refraction element, and the auto-collimation light pipe measures optical axis parallelism errors delta alpha and delta beta of the refraction light pipe;
when Δ α and Δ β are zero, it indicates that there is no parallelism error in the folded light pipe in both the horizontal and vertical directions.
Preferably, the refractive element is a pentaprism or a flat mirror.
Compared with the existing method for detecting the parallelism of the optical axis of the folding light pipe, the method provided by the invention has the advantages that the parallelism is detected in a mode of matching the refraction element with the folding light pipe under the condition of not using a plane mirror as a detection tool, and the detection applicability is improved.
Drawings
Fig. 1 is a flowchart of an optical axis parallelism detection method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of light path collimation in the optical axis parallelism detection method according to the embodiment of the invention.
Fig. 3 is a schematic optical path diagram when detecting according to the optical axis parallelism detection method provided by the embodiment of the invention.
Wherein the reference numerals include: the light source comprises an auto-collimation light pipe 1, a refraction element 2, a parallel light source 3 and a refraction light pipe 4.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same blocks. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
Fig. 1 illustrates steps of an optical axis parallelism detection method provided according to an embodiment of the present invention.
The optical axis parallelism detection method provided by the invention comprises the following steps:
s1, pre-installation step:
and S101, collimating the emergent light of the autocollimation light pipe 1 and the parallel light source 3.
Fig. 2 shows a collimated light path of the optical axis parallelism detection method provided by the embodiment of the invention.
As shown in FIG. 2, the emergent light of the autocollimator 1 and the collimated light source 3 is collimated before detection. At this time, the parallelism error of the optical axes of the autocollimator 1 and the parallel light source 3 can be considered to be 0 in both the height and the azimuth directions.
S102, placing the refraction element 2 between the autocollimation light pipe 1 and the parallel light source 3, and determining the position of the refraction element 2.
The refraction element 2 is arranged in the emergent direction of the parallel light source 3, the refraction element 2 is adjusted to ensure that the caliber of emergent light of the auto-collimation tube 1 completely passes through the incident port of the refraction element 2 and is bent, the refraction element 2 bends the light ray by 90 degrees, the emergent parallel light enters the auto-collimation tube 1, and the position of the auto-collimation tube 1 is adjusted to enable the emergent light of the auto-collimation tube 1 to be collimated with the emergent light of the refraction element 2. At this time, the autocollimation light pipe 1 and the optical axis of the parallel light source 3 are aligned in a direction of 90 degrees, namely the optical axes of the two light pipes are perpendicular to each other.
The refractive element 2 may be a pentaprism or a flat mirror.
On the premise of ensuring that the emergent light of the refraction element 2 can enter the autocollimation light tube 1, the refraction element 2 can perform the refraction of the light beam at any angle.
S103, placing a folding light pipe between the self-collimating light pipe and the refraction element.
And S2, detecting the folded light conversion tube.
Fig. 3 illustrates a detection optical path of the optical axis parallelism detection method provided by the embodiment of the invention.
As shown in FIG. 3, the detected folded light pipe 4 is placed between the autocollimation light pipe 1 and the parallel light source 3 at a proper position, so that the parallel light source 3 irradiates and passes through the entrance port of the folded light pipe 4. The folding light tube 4 is placed at a proper position of the refraction element 2 and is leveled, emergent light finally enters the caliber of the autocollimation light tube 1 after being folded by the refraction element 2, and the horizontal reading alpha and the high and low reading beta measured by the autocollimation light tube 1 at the moment are the optical axis parallelism errors delta alpha and delta beta of the folding light tube.
When the delta alpha is zero, the folding light pipe 4 is indicated to have no parallelism error in the horizontal direction;
when the value of delta beta is zero, the folded light pipe 4 is indicated to have no parallelism error in the vertical direction;
when both Δ α and Δ β are zero, it indicates that there is no parallelism error in the folded light pipe 4 in both the horizontal direction and the vertical direction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (2)
1. An optical axis parallelism detection method is characterized by comprising the following steps:
s1, pre-installation step:
s101, collimating emergent light of an auto-collimation light pipe and a parallel light source;
s102, placing a refraction element between the auto-collimation light pipe and the parallel light source and determining the position of the refraction element;
s103, placing a folding light pipe between the self-collimating light pipe and the refraction element;
s2, detecting the folded light pipe:
the light beam emitted by the parallel light source enters the refraction element after passing through the refraction light pipe, the light beam enters the auto-collimation light pipe after being refracted by the refraction element, and the auto-collimation light pipe measures the optical axis parallelism errors delta alpha and delta beta of the refraction light pipe at the moment;
when the delta alpha and the delta beta are zero values, the folding light pipe is indicated to have no parallelism error in the horizontal direction and the vertical direction.
2. The method for detecting parallelism of optical axes of claim 1, wherein the refractive element is a pentaprism or a plane mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462695.1A CN114166476A (en) | 2021-12-02 | 2021-12-02 | Optical axis parallelism detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462695.1A CN114166476A (en) | 2021-12-02 | 2021-12-02 | Optical axis parallelism detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114166476A true CN114166476A (en) | 2022-03-11 |
Family
ID=80482618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111462695.1A Pending CN114166476A (en) | 2021-12-02 | 2021-12-02 | Optical axis parallelism detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114166476A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490593A (en) * | 2002-10-15 | 2004-04-21 | 中国科学院长春光学精密机械与物理研 | Inspection of parallelism of light axle of bending optical pipe |
-
2021
- 2021-12-02 CN CN202111462695.1A patent/CN114166476A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490593A (en) * | 2002-10-15 | 2004-04-21 | 中国科学院长春光学精密机械与物理研 | Inspection of parallelism of light axle of bending optical pipe |
Non-Patent Citations (1)
| Title |
|---|
| 李永刚等: "折转光管误差检测方法的研究", 《宇航计测技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858735B (en) | Large-caliber off-axis non-spherical measuring and calibration system | |
| CN105424322A (en) | Self-calibration optical axis parallelism detector and detection method | |
| CN110207588B (en) | Method for assembling and adjusting optical vertex aiming device of pyramid prism | |
| CN111721235B (en) | Photoelectric edge detection system and detection method thereof | |
| CN101672726B (en) | Spatial light communication terminal communication detector locating test device and method | |
| CN101339008B (en) | Device for checking heavy caliber paraboloidal mirror K value coefficient | |
| CN103630073A (en) | Wedge-shaped lens detecting and correcting method | |
| CN116164673A (en) | Straightness interferometry method based on optical interference principle | |
| CN1057832C (en) | Appts. for non-contact measurement of body thickness made of transparent material | |
| CN113607091B (en) | Optical measurement system and method for included angle between optical axis of off-axis aspheric mirror and mounting surface | |
| CN110132160A (en) | A kind of Measurement Methods Of Bridge Deflection using optical fiber source | |
| CN114166476A (en) | Optical axis parallelism detection method | |
| CN108061527A (en) | A kind of two-dimensional laser autocollimator of anti-air agitation | |
| KR100590232B1 (en) | Large telescopic optical system with null alignment optics | |
| CN113310434B (en) | Method for measuring perpendicularity of two-dimensional linear motion platform | |
| CN109212775A (en) | A kind of bio-measurement instrument zero point arm debugging apparatus and method | |
| CN105758333A (en) | Long-trace optical surface profile detector | |
| CN102003950A (en) | Device and method for measuring surface flatness of light wave array surface or optical reflecting surface | |
| CN102288129A (en) | System for testing surface shape deviation of birefringent crystal optical element | |
| CN1025972C (en) | Comprehensive checker for precise levelling instrument | |
| CN103673928A (en) | High-precision measuring device for micro-curvature of optical reflecting mirror | |
| CN209706769U (en) | Shaft coupling coaxality measuring mechanism | |
| CN203191194U (en) | Lens scattered light detector with dual optical paths | |
| CN106066529A (en) | A kind of big visual field refraction-reflection type measures optical system | |
| CN220304798U (en) | Right angle error detection auxiliary device for pentaprism |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220311 |
|
| RJ01 | Rejection of invention patent application after publication |