CN109358435A - A kind of the adjustment device and method of adjustment of doubly telecentric camera lens verticality - Google Patents
A kind of the adjustment device and method of adjustment of doubly telecentric camera lens verticality Download PDFInfo
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- CN109358435A CN109358435A CN201811547488.4A CN201811547488A CN109358435A CN 109358435 A CN109358435 A CN 109358435A CN 201811547488 A CN201811547488 A CN 201811547488A CN 109358435 A CN109358435 A CN 109358435A
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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Abstract
A kind of the adjustment device and method of adjustment of doubly telecentric camera lens verticality, the adjustment device includes source of parallel light, the first spectroscope, the 4th spectroscope, the first mirror assembly, the second mirror assembly and the second spectroscope being sequentially arranged along main shaft optical path, third spectroscope, object lens and camera, and camera is located in the focus of object lens；First spectroscope, the second spectroscope and the 4th spectroscope are sequentially arranged along the input path of source of parallel light, and input path is vertical with main shaft optical path；First mirror assembly is located on first spectroscopical light splitting optical path, light through the first spectroscope dichroic reflection is reflexed to third spectroscope by the first mirror assembly, and the light reflected through the first mirror assembly is reflexed to object lens along the direction for being parallel to main shaft optical path by third spectroscope；Second mirror assembly is located on the 4th spectroscopical light splitting optical path.Whether the present invention is convenient for the optical axis of confirmation doubly telecentric camera lens perpendicular to article carrying platform.
Description
Technical field
The present invention relates to vision-based detection and radiographic measurement technical field, especially a kind of adjustment of doubly telecentric camera lens verticality
Device and method of adjustment.
Background technique
Telecentric lens mainly design to correct traditional industry camera lens parallax, it can be in certain object distance range
The image enlargement ratio made will not change, this is very important application to situation of the measured object not on same object plane,
It is widely used on various vision imaging detection devices.
When being detected using doubly telecentric camera lens, in order to guarantee measurement accuracy, it is desirable that necessary between camera lens and objective table
Strictly meet a certain known geometrical relationship, this geometrical relationship is to require the optical axis of doubly telecentric camera lens flat perpendicular to loading mostly
Platform.
In the prior art, guarantee doubly telecentric camera lens optical axis is by machinery positioning, by loading perpendicular to the mode of article carrying platform
Platform is vertically mounted on elevating mechanism, and doubly telecentric camera lens is mounted on straight down on camera lens support frame, however, this mechanical fixed
Whether position mode can not determine doubly telecentric camera lens optical axis perpendicular to article carrying platform.
Summary of the invention
The present invention provides the adjustment device and method of adjustment of a kind of doubly telecentric camera lens verticality, convenient for confirmation doubly telecentric camera lens
Optical axis whether perpendicular to article carrying platform.
According to the first aspect of the invention, the present invention provides a kind of adjustment device of doubly telecentric camera lens verticality, including flat
Line light source, the first spectroscope, the 4th spectroscope, the first mirror assembly, the second mirror assembly and along main shaft optical path sequentially
The second spectroscope, third spectroscope, object lens and the camera being arranged, the camera are located in the focus of object lens；First light splitting
Mirror, the second spectroscope and the 4th spectroscope are sequentially arranged along the input path of source of parallel light, the input path and the main shaft
Optical path is vertical；First mirror assembly is located on first spectroscopical light splitting optical path, and the first mirror assembly is for will be through
The light of first spectroscope dichroic reflection reflexes to third spectroscope, and third spectroscope through the first mirror assembly for that will reflect
Light reflex to object lens along the direction for being parallel to main shaft optical path；Second mirror assembly is located at the 4th spectroscopical light splitting optical path
On, the second mirror assembly is used to the light through the 4th spectroscope dichroic reflection reflexing to the 4th spectroscope, the 4th spectroscope
Light for reflecting the second mirror assembly reflexes to the second spectroscope, and the second spectroscope is used to reflect in the 4th spectroscope
Light reflectance-transmittance third reflective mirror and along being parallel to the direction directive object lens of main shaft optical path.
Preferably, first spectroscope, the second spectroscope, third spectroscope and the 4th spectroscope are cube light splitting
Prism.
Preferably, first mirror assembly is pentaprism, right-angle prism or plane mirror.
Preferably, second mirror assembly is prism of corner cube or plane mirror.
Preferably, the source of parallel light includes the point light source being sequentially arranged along input path, cross-graduation plate and collimation object
Mirror, the cross-graduation plate are placed close to point light source and are located in the focus of collimator objective.
Preferably, the source of parallel light includes the dot laser and attenuator being sequentially arranged along input path.
According to the second aspect of the invention, the present invention provides a kind of adjustment device of doubly telecentric camera lens verticality, including flat
Line light source, the first spectroscope, the first mirror assembly and the reflecting surface being sequentially arranged along main shaft optical path, the second spectroscope,
Three spectroscopes, object lens and camera, the camera are located in the focus of object lens；First spectroscope and the second spectroscope are along parallel
The input path of light source is sequentially arranged, and the input path is vertical with the main shaft optical path；First mirror assembly is located at
On first spectroscopical light splitting optical path, the first mirror assembly is used to reflexing to the light through the first spectroscope dichroic reflection into the
Three spectroscopes, the light that third spectroscope is used to reflect through the first mirror assembly are reflected along the direction for being parallel to main shaft optical path
To object lens；Reflecting surface is located on second spectroscopical light splitting optical path, and reflecting surface is used for will be through the light of the second spectroscope dichroic reflection
Line reflection is to the second spectroscope, and the light of reflective surface successively penetrates the second spectroscope along the direction for being parallel to main shaft optical path
With third spectroscope and directive object lens.
Preferably, first spectroscope, the second spectroscope and third spectroscope are cube Amici prism.
Preferably, described second spectroscopical side on its light splitting optical path is coated with reflectance coating, and the reflectance coating is
The reflecting surface；Alternatively, the reflecting surface is plane mirror；Alternatively, the reflecting surface is prism of corner cube.
According to the third aspect of the invention we, the present invention provides a kind of method of adjustment of doubly telecentric camera lens verticality, including such as
Lower step:
(1) using the adjustment device of above-mentioned doubly telecentric camera lens verticality, keep source of parallel light flat to the transmitting of the first spectroscope
Row light observes magazine imaging, when, there are when two hot spots not being overlapped, adjusting the adjustment device in imaging, until at
Two hot spots as in are overlapped, and complete the self calibration of adjustment device；
(2) article carrying platform is arranged in the input path that self-alignment adjustment device is completed, makes through adjustment device
Directional light be irradiated on article carrying platform, observe magazine imaging, when in imaging there are when two hot spots not being overlapped, adjustment
The article carrying platform completes the calibration of article carrying platform until two hot spots in imaging are overlapped；
(3) doubly telecentric camera lens is arranged between the adjustment device and the article carrying platform that article carrying platform calibration is completed,
Make directional light successively through adjustment device and doubly telecentric camera lens and be irradiated on article carrying platform, observes magazine imaging, treat as
There are when two hot spots not being overlapped as in, the doubly telecentric camera lens is adjusted, until two hot spots in imaging are overlapped, is completed double
The adjustment of telecentric lens verticality.
The adjustment device of doubly telecentric camera lens verticality of the invention, can be used for adjusting optical axis and the loading of doubly telecentric camera lens
Platform is vertical, be based on optical autocollimating principle, by observe it is magazine imaging i.e. can determine whether doubly telecentric camera lens optical axis whether
Perpendicular to article carrying platform, judgment mode is more intuitive and simple.
Based on the method for adjustment of doubly telecentric camera lens verticality of the invention, first to the adjustment device of doubly telecentric camera lens verticality
Self calibration is carried out, to reduce the influence of air agitation, then article carrying platform and doubly telecentric camera lens are adjusted separately, until adjustment
It completes.This adjustment mode can greatly promote the accuracy of adjustment.
Detailed description of the invention
Fig. 1 is a kind of optical path characteristic schematic diagram of the doubly telecentric camera lens of embodiment；
Fig. 2 is a kind of schematic diagram of the optical autocollimating principle of embodiment；
Fig. 3 is the structural schematic diagram of the adjustment device of the doubly telecentric camera lens verticality of an embodiment of the present invention；
Fig. 4 is the self calibration light path schematic diagram of the adjustment device of the doubly telecentric camera lens verticality of an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the adjustment device of the doubly telecentric camera lens verticality of an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the adjustment device of the doubly telecentric camera lens verticality of another embodiment of the present invention；
Fig. 7 is the self calibration optical path signal of the adjustment device of the doubly telecentric camera lens verticality of another embodiment of the present invention
Figure；
Fig. 8 is the light path schematic diagram of the adjustment article carrying platform of an embodiment of the present invention；
Fig. 9 is the light path schematic diagram of the adjustment doubly telecentric camera lens of an embodiment of the present invention.
Specific embodiment
Of the invention so-called " equal " or " identical " refer to it is equal or identical in view of reasonable error, and
It is equal or identical in non-absolute sense.Light irradiating angle, reflection angle or refraction angle determined by the present invention are both needed to
To be not the angle in absolute sense in view of presence is centainly lost light in the medium and there are certain reasonable errors
Degree.Below by specific embodiment combination attached drawing, invention is further described in detail.
Fig. 1 is the optical characteristics schematic diagram of doubly telecentric camera lens, in the light for entering to inject doubly telecentric camera lens, and if only if flat
Row is constant in the light direction of propagation of optical axis, i.e., parallel optical axis is injected, and is parallel to optical axis injection.
Fig. 2 be optical autocollimating principle schematic diagram, when light by be located at focal plane of lens graticle after, through object lens
Form directional light.Directional light is reflected by the reflecting mirror perpendicular to optical axis, then by forming graduation on focal plane after object lens
Plate graticule picture is overlapped with graticule.As soon as reflected light beam tilts 2 angles α when the mirror tilt minute angle angle α.Cause
This, may determine that whether camera lens is perpendicular or parallel with a certain plane in this way.
The embodiment of the present invention provides a kind of adjustment device of doubly telecentric camera lens verticality, as shown in Figure 3 and Figure 4, including it is flat
Line light source 1, the first spectroscope 2, the 4th spectroscope 7, the first mirror assembly 3, the second mirror assembly 8 and along main shaft optical path
200 the second spectroscope 6, third spectroscope 4, object lens 5 and the cameras 9 being sequentially arranged.Source of parallel light 1 is used to generate directional light,
The light source assembly that can be single light source or be made of light source and lens.Main shaft optical path 200 is positioned at 5 central axis of object lens
On along Propagation opticpath, the second spectroscope 6, third spectroscope 4, object lens 5 and camera 9 are same along main shaft optical path 200
Axis setting, object lens 5 can collect light, and camera 9 is located in the focus of object lens 5, so that shooting collects the hot spot to be formed.
First spectroscope 2, the second spectroscope 6 and the 4th spectroscope 7 along source of parallel light 1 input path 100 sequentially
Setting, input path 100 are that the parallel linear propagation of light that source of parallel light 1 issues is formed by optical path, and collimated light beam will successively thoroughly
The first spectroscope 2, the second spectroscope 6 and the 4th spectroscope 7 are crossed, does not generate refraction.Wherein, the input path 100 with it is described
Main shaft optical path 200 is vertical.
First spectroscope 2, the second spectroscope 6, third spectroscope 4 and the 4th spectroscope 7 can have a light splitting surface, light
Line exposes to after spectroscope, and a part of light will will occur instead directly through spectroscope, another part light on light splitting surface
It penetrates, forms light splitting optical path.
First mirror assembly 3 is on the light splitting optical path of the first spectroscope 2, and source of parallel light 1 is sent out to the first spectroscope 2
Penetrate directional light, for the first spectroscope 2 by a part of light dichroic reflection to the first mirror assembly 3, the first mirror assembly 3 will be through
The light of first spectroscope, 2 dichroic reflection reflexes to third spectroscope 4, and third spectroscope 4 will be reflected through the first mirror assembly 2
Light reflex to object lens 5 along the direction for being parallel to main shaft optical path 200, this entire optical path forms first calibration optical path, can exist
First hot spot is formed in the imaging of camera 9.Wherein, the reflection of the light splitting angle of the first spectroscope 2, the first mirror assembly 3
Angle and the light splitting angle of third spectroscope 4 need to meet by reasonable disposition: eventually passing through 4 dichroic reflection of third spectroscope
Light is along the direction directive object lens 5 for being parallel to main shaft optical path 200, with this condition, the light splitting angle of the first spectroscope 2, first
The reflection angle of mirror assembly 3 and the light splitting angle of third spectroscope 4 can be configured with the need.
Second mirror assembly 8 is located on the light splitting optical path of the 4th spectroscope 7, and the directional light that source of parallel light 1 emits is direct
Through the second spectroscope 6 and the 4th spectroscope 7 of directive, the 4th spectroscope 7 makes a part of light light splitting directive second reflect microscope group
Light through 7 dichroic reflection of the 4th spectroscope is reflexed to the 4th spectroscope 7, the 4th spectroscope 7 by part 8, the second mirror assembly 8
Light for reflecting the second mirror assembly 8 reflexes to the second spectroscope 6, and the second spectroscope is used for the 4th spectroscope 7
The light of reflection reflects and penetrates third reflective mirror 4, and is parallel to main shaft optical path 200 through the light of third reflective mirror 4 edge
Direction directive object lens 5.This entire optical path forms the second calibration optical path, and second hot spot can be formed in the imaging of camera 9.Its
In, the light splitting angle of the light splitting angle of the second spectroscope 6, the reflection angle of the second mirror assembly 8 and the 4th spectroscope 7 passes through
Reasonable disposition needs to meet: the light for eventually passing through 6 dichroic reflection of the second spectroscope is penetrated along the direction for being parallel to main shaft optical path 200
To object lens 5, with this condition, the light splitting angle of the second spectroscope 6, the reflection angle of the second mirror assembly 8 and the 4th light splitting
Mirror 7 can be configured with the need.
By optical autocollimating principle it is found that when the first optical path and the final directive object lens 5 of the second optical path light each parallel to
When main shaft optical path 200, the first hot spot and the second hot spot on camera 9 must be overlapped.It can be based on this to the vertical of doubly telecentric camera lens
Degree is judged.
In one embodiment, first spectroscope 2, the second spectroscope 6, third spectroscope 4 and the 4th spectroscope 7 are equal
For the cube Amici prism at 45 degree of angles, i.e. light injects spectroscopical light when the incident angle on light splitting surface is 45 degree
It is vertical with spectroscopical light is projected.In order to enhance the transmission of light, anti-reflection film can be plated in above-mentioned each spectroscopical right-angle surface.
The cemented surface of first spectroscope 2 and the second spectroscope 6 is coated with semi-transparent semi-reflecting film, the gluing of third spectroscope 4 and the 4th spectroscope 7
Face is coated with semi-transparent semi-reflecting film or PBS film.Inject the first spectroscope 2, the second spectroscope 6, third spectroscope 4 and the 4th spectroscope 7
Light should perpendicular to corresponding first spectroscope 2, the second spectroscope 6, third spectroscope 4 and the 4th spectroscope 7 table
Face, and the first spectroscope 2, the second spectroscope 6, third spectroscope 4 and the 4th spectroscope 7 light splitting surface and corresponding incident ray
Angle be 45 degree.
In one embodiment, first mirror assembly 3 is pentaprism, right-angle prism or plane mirror.When it
When for pentaprism, light is injected from one of vertical plane, and is projected from another vertical plane, and 90 degree of light deflection can be made to penetrate
Out.When it is right-angle prism, light is injected from one of vertical plane, and is projected from another vertical plane, and on inclined-plane
It reflects, 90 degree of light deflection injections can also be made.When for plane mirror, plane mirror can be with its light of directive
In 45 degree of angles, 90 degree of light deflection injections can also be made.
In one embodiment, second mirror assembly 8 is prism of corner cube or plane mirror.When it is pyramid rib
When mirror, light carries out two secondary reflections in pyramidal plane, is finally parallel to incident direction injection.When it is plane scintilloscope, plane
Scintilloscope can be vertical with incident ray, projects the light ray parallel of reflection in incident direction.
In one embodiment, as shown in figure 3, the source of parallel light 1 includes that the point being sequentially arranged along input path 100 swashs
Light device 101 and attenuator 102.Dot laser 101 issues laser, and laser forms collimated light beam, and attenuator 102 is used for laser
Intensity of illumination decays, and plays a protective role to the lens in subsequent optical path.Attenuator 102 is used to decay to laser,
The dot laser that low-power can be selected reduces the intensity of illumination of the dot laser of its sending, so as to save attenuator 102
It uses, this belongs to the conventional techniques of those skilled in the art, does not describe excessively herein.
In one embodiment, as shown in figure 5, the source of parallel light 1 includes the point light being sequentially arranged along input path 100
Source 103, cross-graduation plate 105 and collimator objective 104, the cross-graduation plate 105 are placed close to point light source 103 and are located at collimation
In the focus of object lens 104.Point light source 103 radially shines, and the light after the collimation of collimator objective 104 will form parallel
Light.Since source of parallel light belongs to light source commonly used in the art, according to actual needs, those skilled in the art can also select other knots
The source of parallel light of structure.
The embodiment of the present invention also provides a kind of adjustment device of doubly telecentric camera lens verticality, as shown in Figure 6 and Figure 7, including
Source of parallel light 1, the first spectroscope 2, the first mirror assembly 3 and the reflecting surface being sequentially arranged along main shaft optical path, the second light splitting
Mirror 6, third spectroscope 4, object lens 5 and camera 9.Source of parallel light 1 can be single light source either for generating directional light
The light source assembly being made of light source and lens.Main shaft optical path is on 5 central axis of object lens along the opticpath of Propagation, instead
It penetrates face, the second spectroscope 6, third spectroscope 4, object lens 5 and camera 9 to be coaxially disposed along main shaft optical path 200, object lens 5 can be by light
Collect, camera 9 is located in the focus of object lens 5, so that shooting collects the hot spot to be formed.
First spectroscope 2 and the second spectroscope 6 are sequentially arranged along the input path of source of parallel light 1, and input path is
The parallel linear propagation of light that source of parallel light 1 issues is formed by optical path, and directional light will successively penetrate the first spectroscope 2 and second point
Light microscopic 6 does not generate refraction.Wherein, the input path is vertical with the main shaft optical path.
First mirror assembly 3 is located on the light splitting optical path of the first spectroscope 2, and source of parallel light 1 is to the first spectroscope 2
Emitting parallel light, the first spectroscope 2 will by a part of light dichroic reflection to the first mirror assembly 3, the first mirror assembly 3
Light through 2 dichroic reflection of the first spectroscope reflexes to third spectroscope 4, and third spectroscope 4 will be anti-through the first mirror assembly 2
The light penetrated reflexes to object lens 5 along the direction for being parallel to main shaft optical path, this entire optical path forms the first calibration optical path, can be in phase
First hot spot is formed in the imaging of machine 9.Wherein, the light splitting angle of the first spectroscope 2, the first mirror assembly 3 angle of reflection
The light splitting angle of degree and third spectroscope 4 needs to meet by reasonable disposition: eventually passing through the light of 4 dichroic reflection of third spectroscope
Line is along the direction directive object lens 5 for being parallel to main shaft optical path 200, and with this condition, the light splitting angle of the first spectroscope 2, first are instead
The light splitting angle of the reflection angle and third spectroscope 4 of penetrating mirror assembly 3 can be configured with the need.
Reflecting surface is then located on the light splitting optical path of the second spectroscope 6, and the directional light that source of parallel light 1 emits is directed through first
Spectroscope 2 and the second spectroscope of directive 6, a part of light will transmit through the second spectroscope 6, and another part light then passes through first point
2 dichroic reflection of light microscopic, reflecting surface are then used to reflex to the light through 6 dichroic reflection of the second spectroscope the second spectroscope 6, and anti-
The light for penetrating face reflection successively penetrates the second spectroscope 6 and third spectroscope 4 and directive object along the direction for being parallel to main shaft optical path
Mirror 5.This entire optical path forms the second calibration optical path, and second hot spot can be formed in the imaging of camera 9.Wherein, second point
The light splitting angle of light microscopic 6 and the reflection angle of reflecting surface need to meet by reasonable disposition: eventually passing through the light of reflective surface
Line is along the direction directive object lens 5 of main shaft optical path are parallel to, with this condition, the light splitting angle of the second spectroscope 6 and reflecting surface
Reflection angle can be configured with the need.
By optical autocollimating principle it is found that when the first optical path and the final directive object lens 5 of the second optical path light each parallel to
When main shaft optical path, the first hot spot and the second hot spot in the imaging of camera 9 must be overlapped.It can be based on this to the vertical of doubly telecentric camera lens
Degree is judged.
In one embodiment, first spectroscope 2, the second spectroscope 6 and third spectroscope 4 are the vertical of 45 degree of angles
Cube Amici prism, i.e. light inject spectroscopical light and project spectroscope when the incident angle on light splitting surface is 45 degree
Light it is vertical.In order to enhance the transmission of light, anti-reflection film can be plated in above-mentioned each spectroscopical right-angle surface.First spectroscope 2
It is coated with semi-transparent semi-reflecting film with the cemented surface of the second spectroscope 6, the cemented surface of third spectroscope 4 is coated with semi-transparent semi-reflecting film or PBS film.
Inject the light of the first spectroscope 2, the second spectroscope 6 and third spectroscope 4 should perpendicular to corresponding first spectroscope 2,
The surface of second spectroscope 6 and third spectroscope 4, and the light splitting surface of the first spectroscope 2, the second spectroscope 6 and third spectroscope 4
Angle with corresponding incident ray is 45 degree.
Further, as shown in Figures 6 and 7, one of surface of second spectroscope 6 is coated with reflectance coating, the reflection
Film is located at the side on its light splitting optical path.Due to being coated with reflectance coating, light can not be projected, and light splitting light is reflected by reflectance coating, from
And the second spectroscope 6 is penetrated, which forms the reflecting surface.
In another embodiment, reflecting surface be with the independent reflecting mirror of the second spectroscope 6, specifically can be plane
Reflecting mirror, prism of corner cube or other reflecting mirrors.
In one embodiment, first mirror assembly 3 is pentaprism, right-angle prism or plane mirror.When it
When for pentaprism, light is injected from one of vertical plane, and is projected from another vertical plane, and 90 degree of light deflection can be made to penetrate
Out.When it is right-angle prism, light is injected from one of vertical plane, and is projected from another vertical plane, and on inclined-plane
It reflects, 90 degree of light deflection injections can also be made.When for plane mirror, plane mirror can be with its light of directive
In 45 degree of angles, 90 degree of light deflection injections can also be made.
In one embodiment, as shown in figure 3, the source of parallel light 1 includes that the point being sequentially arranged along input path 100 swashs
Light device 101 and attenuator 102.Dot laser 101 issues laser, and laser forms collimated light beam, and attenuator 102 is used for laser
Intensity of illumination decays, and plays a protective role to the lens in subsequent optical path.Attenuator 102 is used to decay to laser,
The dot laser that low-power can be selected reduces the intensity of illumination of the dot laser of its sending, so as to save attenuator 102
It uses, this belongs to the conventional techniques of those skilled in the art, does not describe excessively herein.
In one embodiment, as shown in figure 5, the source of parallel light 1 includes the point light being sequentially arranged along input path 100
Source 103, cross-graduation plate 105 and collimator objective 104, the cross-graduation plate 105 are placed close to point light source 103 and are located at collimation
In the focus of object lens 104.Point light source 103 radially shines, and the light after the collimation of collimator objective 104 will form parallel
Light.Since source of parallel light belongs to light source commonly used in the art, according to actual needs, those skilled in the art can also select other knots
The source of parallel light of structure.
The embodiment of the present invention also provides a kind of method of adjustment of doubly telecentric camera lens verticality, includes the following steps:
(1) using the adjustment device of the doubly telecentric camera lens verticality in above-mentioned any embodiment, make source of parallel light to first
Spectroscope emitting parallel light, at this point, observe magazine imaging, when, there are when two hot spots not being overlapped, illustrating whole in imaging
A adjustment device is not adjusted in place, then needs to adjust the adjustment device, and regulating object is source of parallel light 1, the first spectroscope
2, the 4th spectroscope 7, the first mirror assembly 3, the second mirror assembly 8, the second spectroscope 6, third spectroscope 4,5 and of object lens
It is any one or more in camera 9, it specifically will adjustment angle and distance etc..During the adjustment, in continuous observation camera 9
Imaging completes the self calibration of adjustment device until two hot spots in imaging are overlapped.It first exchanges engagement positions and carries out self calibration, it can
To reduce the influence of air agitation, the precision of subsequent adjustment is promoted.
(2) after the self calibration for completing adjustment device, as shown in figure 8, self-correcting is being completed in the setting of article carrying platform 10
In the input path of quasi- adjustment device, it is irradiated to the directional light through adjustment device on article carrying platform 10.Article carrying platform 10
By the light of reflectance-transmittance, make the second spectroscope of light directive 6, the light that the second spectroscope 6 reflects article carrying platform 10 is anti-again
It is incident upon object lens 5.Magazine imaging is observed, when, there are when two hot spots not being overlapped, illustrating article carrying platform 10 in imaging and enter
Optical path out of plumb is penetrated, adjusts the angle of the article carrying platform 10, the magazine imaging of continuous observation, until two in imaging at this time
A hot spot is overlapped, and completes the calibration of article carrying platform.At this point, article carrying platform 10 is vertical with input path.
(3) after the adjustment for completing article carrying platform 10, as shown in figure 9, loading is being completed in the setting of doubly telecentric camera lens 11
Between the adjustment device and the article carrying platform 10 of platform alignment, make directional light successively through adjustment device and doubly telecentric camera lens 11
And it is irradiated on article carrying platform 10.The light of reflectance-transmittance is made light through doubly telecentric camera lens 11 and directive by article carrying platform 10
The light that article carrying platform 10 reflects is reflexed to object lens 5 by the second spectroscope 6, the second spectroscope 6 again.Magazine imaging is observed,
When there are the optical axis and 10 out of plumb of article carrying platform that when two hot spots not being overlapped, illustrate doubly telecentric camera lens 11, adjustment in imaging
The angle of the doubly telecentric camera lens 11 and/or its at a distance from article carrying platform 10, continuous observation camera, until imaging in two
Hot spot is overlapped, and completes the adjustment of 11 verticality of doubly telecentric camera lens, at this point, the optical axis of doubly telecentric camera lens 11 and article carrying platform 10 hang down
Directly.
The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (10)
1. a kind of adjustment device of doubly telecentric camera lens verticality, it is characterised in that:
Including source of parallel light, the first spectroscope, the 4th spectroscope, the first mirror assembly, the second mirror assembly and along master
The second spectroscope, third spectroscope, object lens and the camera that axial light path is sequentially arranged, the camera are located in the focus of object lens；Institute
It states the first spectroscope, the second spectroscope and the 4th spectroscope to be sequentially arranged along the input path of source of parallel light, the input path
It is vertical with the main shaft optical path；First mirror assembly is located on first spectroscopical light splitting optical path, the first reflection microscope group
Part is used to reflex to the light through the first spectroscope dichroic reflection third spectroscope, and third spectroscope through first for that will reflect
The light of mirror assembly reflection reflexes to object lens along the direction for being parallel to main shaft optical path；Second mirror assembly is located at the 4th spectroscope
Light splitting optical path on, the second mirror assembly is used to the light through the 4th spectroscope dichroic reflection reflexing to the 4th spectroscope,
4th spectroscope is used to reflex to the light that the second mirror assembly reflects the second spectroscope, and the second spectroscope is used for the 4th
The light reflectance-transmittance third reflective mirror of spectroscope reflection is simultaneously along the direction directive object lens for being parallel to main shaft optical path.
2. adjustment device according to claim 1, it is characterised in that:
First spectroscope, the second spectroscope, third spectroscope and the 4th spectroscope are cube Amici prism.
3. adjustment device according to claim 1, it is characterised in that:
First mirror assembly is pentaprism, right-angle prism or plane mirror.
4. adjustment device according to claim 1, it is characterised in that:
Second mirror assembly is prism of corner cube or plane mirror.
5. adjustment device according to claim 1, it is characterised in that:
Preferably, the source of parallel light includes the point light source being sequentially arranged along input path, cross-graduation plate and collimator objective, institute
Cross-graduation plate is stated to place and be located in the focus of collimator objective close to point light source.
6. adjustment device according to claim 1, it is characterised in that:
The source of parallel light includes the dot laser and attenuator being sequentially arranged along input path.
7. a kind of adjustment device of doubly telecentric camera lens verticality, it is characterised in that:
Including source of parallel light, the first spectroscope, the first mirror assembly and the reflecting surface being sequentially arranged along main shaft optical path, second
Spectroscope, third spectroscope, object lens and camera, the camera are located in the focus of object lens；First spectroscope and second point
Light microscopic is sequentially arranged along the input path of source of parallel light, and the input path is vertical with the main shaft optical path；First reflection
Mirror assembly is located on first spectroscopical light splitting optical path, and the first mirror assembly is used for will be through the light of the first spectroscope dichroic reflection
For line reflection to third spectroscope, the light edge that third spectroscope is used to reflect through the first mirror assembly is parallel to main shaft optical path
Direction reflex to object lens；Reflecting surface is located on second spectroscopical light splitting optical path, and reflecting surface through the second spectroscope for that will divide
The light of light reflection reflexes to the second spectroscope, and the light of reflective surface is successively penetrated along the direction for being parallel to main shaft optical path
Second spectroscope and third spectroscope and directive object lens.
8. adjustment device according to claim 7, it is characterised in that:
First spectroscope, the second spectroscope and third spectroscope are cube Amici prism.
9. adjustment device according to claim 8, it is characterised in that:
Described second spectroscopical side on its light splitting optical path is coated with reflectance coating, and the reflectance coating is the reflecting surface；
Alternatively, the reflecting surface is plane mirror；Alternatively, the reflecting surface is prism of corner cube.
10. a kind of method of adjustment of doubly telecentric camera lens verticality, which comprises the steps of:
(1) the adjustment device for using the described in any item doubly telecentric camera lens verticalities of claim 1-9, makes source of parallel light to first
Spectroscope emitting parallel light observes magazine imaging, when, there are when two hot spots not being overlapped, adjusting the adjustment in imaging
Device completes the self calibration of adjustment device until two hot spots in imaging are overlapped；
(2) article carrying platform is arranged in the input path that self-alignment adjustment device is completed, makes through the flat of adjustment device
Row illumination is mapped on article carrying platform, observes magazine imaging, when in imaging there are when two hot spots not being overlapped, described in adjustment
Article carrying platform completes the calibration of article carrying platform until two hot spots in imaging are overlapped；
(3) doubly telecentric camera lens is arranged between the adjustment device and the article carrying platform that article carrying platform calibration is completed, makes to put down
Row light successively through adjustment device and doubly telecentric camera lens and is irradiated on article carrying platform, magazine imaging is observed, when in imaging
There are when two hot spots not being overlapped, the doubly telecentric camera lens is adjusted, until two hot spots in imaging are overlapped, completes doubly telecentric
The adjustment of camera lens verticality.
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| CN201811547488.4A CN109358435B (en) | 2018-12-18 | 2018-12-18 | Device and method for adjusting perpendicularity of double telecentric lenses |
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