CN205719476U - A kind of width of measuring device of right angle roof prism ridge - Google Patents
A kind of width of measuring device of right angle roof prism ridge Download PDFInfo
- Publication number
- CN205719476U CN205719476U CN201620319355.1U CN201620319355U CN205719476U CN 205719476 U CN205719476 U CN 205719476U CN 201620319355 U CN201620319355 U CN 201620319355U CN 205719476 U CN205719476 U CN 205719476U
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- right angle
- roof prism
- ridge
- width
- measuring device
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Abstract
This patent discloses the device of the width measure of a kind of right angle roof prism ridge, measurement apparatus uses the measuring method of optics difference, produced by laser instrument and collimator and be similar to remote directional light, the circular light spot that directional light is formed after converging optical system is radiated on right angle roof prism ridge, the two-beam produced after the reflection of two right-angle surface of right angle roof prism is detected by laser power meter respectively after lens converge again, last by the numerical information of two laser power meters, the width of extrapolated right angle roof prism ridge.It solves the measurement problem of right angle roof prism ridge width, and method is simple.
Description
Technical field:
This patent relates to high accuracy width measure, is specifically related to the width measure of a kind of right angle roof prism ridge, its application
In aiming at, capturing and beacon hot spot centroid measurement system in tracking system.
Background technology:
Right angle roof prism has an exceedingly useful optical characteristics: when a branch of focusing light beam converges in right angle ridge rib
Time above mirror ridge, two bundles can be divided into by it in opposite direction and be in the two-beam on same straight line.Utilize this characteristic, taking aim at
Accurate, capture and follow the tracks of system localizer facula mass center detection system and use, the centroid detecting accuracy of beacon hot spot can be effectively improved.
Currently known aiming, capture and in tracking system, rarely have the matter using right angle roof prism to carry out beacon hot spot
The heart detects, and roof prism causes being difficult to measure the width of its ridge owing to there is problems with:
1., owing to aiming at, capturing and in tracking system, the ridge width of the right angle roof prism of use is less, in micron amount
Level, very difficult dip stick is directly measured.
2., in order to strengthen the reflectance of two right-angle surface of right angle roof prism, silverskin need to be plated in two right-angle surface,
Plate the right angle roof prism transmittancy extreme difference after silverskin, it is impossible to use microscope to be amplified measuring the most again to its ridge.
Summary of the invention:
In order to solve technical problem present in background technology, this patent have employed the method for optical measurement, uses laser
The equipment such as device, collimator, condenser lens, laser power meter, measure the ridge width of right angle roof prism the most accurately.
The width of measuring device of a kind of right angle of this patent roof prism ridge includes: the first laser power meter 1, and first focuses on
Lens 2, right angle to be measured roof prism 3, the second condenser lens 4, the second laser power meter 5, working computer 6, focus optical
System 7, collimator 8, laser instrument 9, electricity driving displacement platform 10.
Described measurement apparatus is placed on stabilized platform, and is rigidly connected with stabilized platform；Described collimator 8 with
The plane perpendicular of the optical axis of Focused Optical system 7 and right angle to be measured roof prism, and in the right-angled edge of right angle to be measured roof prism 3
Point is contour, and the ridge of described right angle to be measured roof prism 3 is positioned on the focal plane of described Focused Optical system 7；It is placed on institute
The laser that the laser instrument 9 on electricity driving displacement platform 10 stated sends becomes directional light after collimator 8, and this directional light is again through poly-
Focus optical system 7 is radiated on the ridge of right angle to be measured roof prism 3 after converging, and converging beam is by right angle to be measured roof prism 3
Respectively by the first condenser lens 2 with the second condenser lens 4 focuses on and by the first laser power meter 1 and the after the reflection of two right-angle surface
Dual-laser energy meter 5 receives, and the light energy data of laser power meter detection gained are transferred to working computer 6 and carry out data process
After obtain the ridge width of right angle to be measured roof prism 3.
The minimum step size of described electricity driving displacement platform 10 is in micron dimension.
Described laser instrument 9 wavelength is in visible waveband, and power is not less than 500mW, and the angle of divergence is not more than 1mrad.
The focal length of described collimator 8 is not less than 10m.
Described Focused Optical system 7 uses Cassegrain's structure, and bore is 200mm, and focal length is 2m.
The first described condenser lens 2 is consistent with focal length parameter with the second condenser lens 4 size, and its focal length is 20cm.
First laser power meter 1 is identical with the second laser power meter 5 performance parameter, detecting band and the wave band of laser instrument 9
Matching, light intensity resolution is better than 200pW.
The measuring method step of right angle roof prism ridge width is as follows:
1) use the first laser power meter 1 or the second laser power meter 5 to measure directional light to gather through Focused Optical system
The energy of defocused hot spot, records institute measured value x；
2) electricity driving displacement platform 10 moves laser instrument 9 so that the focus spot of Focused Optical system 7 complete inswept to be measured directly
The ridge of angle roof prism, is calculated shown first laser power meter 1 and described second laser merit by described working computer 6 simultaneously
Minima y of the registration sum of rate meter 5, by formula:
Solve the ridge width n drawing shown right angle to be measured roof prism；In formula: λ is laser instrument 9 wavelength, D is for focusing on optics
The bore of system 7, f is focal length.
This patent has the advantages that:
1 uses laser as measuring light, and monochromaticity is good, and uses the corresponding preferable laser of optical maser wavelength response linearity
Energy meter detects, and can reach the certainty of measurement of high roof prism ridge.
2 system integrations are higher, have high-performance, the advantage of high reliability.
Accompanying drawing illustrates:
Fig. 1 is the width of measuring device structure chart of the right angle roof prism ridge of the present invention.
In figure: 1. the first laser power meter, 2. the first condenser lens, right angle the most to be measured roof prism, 4. second focus on thoroughly
Mirror, 5. the second laser power meter, 6. working computer, 7. Focused Optical system, 8. collimator, 9. laser instrument, the most electronic position
Move platform.
Fig. 2 is to be radiated at the spot energy distribution situation schematic diagram above right angle to be measured roof prism ridge.
Detailed description of the invention:
Below in conjunction with the accompanying drawings specific implementation of the patent mode is further described:
Using plus lens and laser power meter to measure light intensity x after converging optical system, laser power meter is adopted
By thorlabs S130VC photodiode power probe and thorlabs PM200 energy meter and energy meter gauge outfit, light intensity is divided
Resolution is 100pW, and as shown in Figure 1, electricity driving displacement platform uses thorlabs MT1-Z8, and the step size of its minimum is
0.1um, regulation experiment device so that the hot spot converging optics into focus is radiated at a right angle of right angle to be measured roof prism
On face, regulate electricity driving displacement platform so that the focal plane hot spot complete inswept right angle to be measured roof prism of receiving optics
Ridge, the spatial distribution feelings of light intensity at receiving optics focal plane as the minimum y of registration sum of two laser power meters
Condition as shown in Figure 2, in conjunction with used by laser wavelength and the aperture of receiving optics used and focal length, counted by work
Calculation machine carries out program operation and calculates the ridge width that can draw right angle to be measured roof prism.
Claims (7)
1. a width of measuring device for right angle roof prism ridge, including: the first laser power meter (1), the first condenser lens
(2), right angle to be measured roof prism (3), the second condenser lens (4), the second laser power meter (5), working computer (6), focus on
Optical system (7), collimator (8), laser instrument (9), electricity driving displacement platform (10), it is characterised in that:
Described measurement apparatus is placed on stabilized platform, and is rigidly connected with stabilized platform；Described collimator (8) is with poly-
The optical axis of focus optical system (7) and the plane perpendicular of right angle to be measured roof prism, with the right-angled edge at right angle to be measured roof prism (3)
Midpoint is contour, and the ridge at described right angle to be measured roof prism (3) is positioned on the focal plane of described Focused Optical system (7)；Put
Putting the laser that the laser instrument (9) on described electricity driving displacement platform (10) sends and become directional light after collimator (8), this is put down
Row light is radiated on the ridge at right angle to be measured roof prism (3) after Focused Optical system (7) converges again, and converging beam is by be measured
Focused on also by the first condenser lens (2) and the second condenser lens (4) respectively after two right-angle surface reflections of right angle roof prism (3)
Received by the first laser power meter (1) and the second laser power meter (5), the light energy data transmission of laser power meter detection gained
The ridge width at right angle to be measured roof prism (3) is obtained after carrying out data process to working computer (6).
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described electricity
The minimum step size of dynamic displacement platform (10) is in micron dimension.
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described swashs
Light device (9) wavelength is in visible waveband, and power is not less than 500mW, and the angle of divergence is not more than 1mrad.
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described is flat
The focal length of row light pipe (8) is not less than 10m.
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described
Focused Optical system (7) uses Cassegrain's structure, and bore is 200mm, and focal length is 2m.
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described
One condenser lens (2) is consistent with focal length parameter with the second condenser lens (4) size, and its focal length is 20cm.
The width of measuring device of a kind of right angle the most according to claim 1 roof prism ridge, it is characterised in that: described
One laser power meter (1) is identical with the second laser power meter (5) performance parameter, and the wave band of detecting band and laser instrument (9) is mutually
Joining, light intensity resolution is better than 200pW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319355.1U CN205719476U (en) | 2016-04-15 | 2016-04-15 | A kind of width of measuring device of right angle roof prism ridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319355.1U CN205719476U (en) | 2016-04-15 | 2016-04-15 | A kind of width of measuring device of right angle roof prism ridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719476U true CN205719476U (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620319355.1U Withdrawn - After Issue CN205719476U (en) | 2016-04-15 | 2016-04-15 | A kind of width of measuring device of right angle roof prism ridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205719476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784329A (en) * | 2016-04-15 | 2016-07-20 | 中国科学院上海技术物理研究所 | Width measuring device and method for ridge of right-angle roof prism |
-
2016
- 2016-04-15 CN CN201620319355.1U patent/CN205719476U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784329A (en) * | 2016-04-15 | 2016-07-20 | 中国科学院上海技术物理研究所 | Width measuring device and method for ridge of right-angle roof prism |
| CN105784329B (en) * | 2016-04-15 | 2018-06-26 | 中国科学院上海技术物理研究所 | A kind of width of measuring device and method of right angle roof prism ridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180626 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180626 |