CN108037594A - A kind of assembly method and device of full filed camera lens - Google Patents
A kind of assembly method and device of full filed camera lens Download PDFInfo
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- CN108037594A CN108037594A CN201810002994.9A CN201810002994A CN108037594A CN 108037594 A CN108037594 A CN 108037594A CN 201810002994 A CN201810002994 A CN 201810002994A CN 108037594 A CN108037594 A CN 108037594A
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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
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
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Abstract
The present invention provides a kind of assembly method of full filed camera lens, including：Wavefront at the tested camera lens full filed diverse location of measurement；The information of the wavefront at diverse location is handled to obtain every aberration；The obtained aberration is integrated, the rigging position of the tested camera lens is adjusted according to synthesis result.The present invention also provides a kind of assembling device for the full filed camera lens for being used for realization the above method, including light source, graticle, telescopic system, Wavefront sensor；Wavefront sensor, the wavefront that the collimated light beam for receiving telescope system exit is formed, measures actual wavefront information, and the wavefront includes wavefront and the outer wavefront of axis on axis, considers the wavefront situation of full filed, and for assembling when adjusts the tested camera lens.The assembly method of present invention wavefront measurement substitutes traditional assembly method based on MTF, improves assembly precision and efficiency, realizes the large-scale production of high-performance camera lens.
Description
Technical field
The present invention relates to a kind of mounting technology of optics, and in particular, to a kind of assembly method of full filed camera lens
And device.
Background technology
In recent years, flourishing with mobile phone industry, the annual shipment amount cumulative year after year of optical lens on mobile phone, at the same time
Requirement of the market to lens performance is also higher and higher.Conventional lenses are assembled using MTF as evaluation criterion, it is desirable to are detected difference and regarded
Mtf value, measuring principle figure during assembling is as shown in Figure 1.Adjustment principle during assembling is, when in camera lens eyeglass have it is eccentric or
The mtf value measured during inclination can differ more with design load, according to the mtf value measured and the contrast of design load, it is possible to
Adjustment eyeglass is instructed, untill mtf value reaches requirement.
Assembling device using MTF as evaluation criterion has certain limitation, and the assembly precision of camera lens first mainly depends on
In the measurement accuracy of MTF, the aberration demand of camera lens is not accounted for, it is impossible to meet the high performance demands of camera lens；Secondly MTF measurement sides
Method cannot meet the needs of factory mass produces camera lens, and MTF measuring methods need to calculate the mtf value at each visual field, in real time
Property deficiency.
Through retrieval, Chinese utility model patent 201620615626.8, discloses a kind of optical lens optical axis alignment device, bag
Include for by the projecting subassembly of image projection to camera lens, drive camera lens is swung below the projecting subassembly so that the camera lens and
The oscillating platform of the projecting subassembly face, for drive an imaging sensor below the camera lens along X, Y, Z axis move with
Make the mobile platform of described image sensor and the camera lens face, and be electrically connected with the oscillating platform and the mobile platform
Connect and control the master controller of the two coordinated movement of various economic factors.But the patent is only through two platforms and realizes camera lens and imaging sensor
Relative position any change, so as to fulfill assembling, can not solve the problem above-mentioned.
The Chinese invention application of Application No. 201710312378.9, it discloses a kind of optics display module accurate assembly side
Method and assembly system, pass through the optical lens ideal image distance L and optical lens actual imaging distance L ' of optics display module
Range difference adjustment optics display module image generation unit displacement distance m, assembling process is almost not required to manual intervention, directly
Connected actuating mechanism controls image generation unit and carry out position adjustment, the degree of automation is high.The patented technology equally can not
Solve above-mentioned technical problem.
The content of the invention
For in the prior art the defects of, the object of the present invention is to provide a kind of assembly method and dress of full filed camera lens
Put, substitute traditional assembly method based on MTF with the assembly method of wavefront measurement, improve assembly precision and efficiency, realize high property
The large-scale production of energy camera lens.
According to an aspect of the present invention, there is provided a kind of assembly method of full filed camera lens, including：
Wavefront at the tested camera lens full filed at least two of measurement at diverse location；
The information of the wavefront at diverse location is handled to obtain every aberration；
The obtained aberration is integrated, the rigging position of the tested camera lens is adjusted according to synthesis result
It is whole.
Preferably, the wavefront at the tested camera lens full filed diverse location of the measurement, refers to：The tested camera lens zero degree of measurement regards
The wavefront of non-zero-degree visual field at field and at least one, forms the wavefront at the tested camera lens full filed diverse location.
Preferably, the information of the wavefront at diverse location is handled to obtain each aberration, is referred to：To tested
The information of the wavefront at camera lens full filed diverse location is fitted with zernike polynomial respectively, decomposites every picture
Difference.
Preferably, the wavefront at the tested camera lens full filed at least two at diverse location, forms in the following ways：
Using some point light sources, identical incident beam is produced for the different field positions in the tested camera lens；Institute
The focal plane for stating point light source from the tested camera lens is sent with a light beam for fixing dispersion angle, enters the tested camera lens,
It is emitted through the tested camera lens into collimated light beam；
The collimated light beam of the tested camera lens outgoing is expanded, forms the ripple at tested camera lens full filed diverse location
Before.
Preferably, the tested camera lens is divided into two parts, and Part I is fixed part, and Part II is adjustable whole
Point, light beam of the point light source generation with a fixation dispersion angle is successively after the Part I and the Part II
Outgoing.
Preferably, the described pair of obtained aberration integrates, and refers to：Wavefront at diverse location is handled
Every aberration assigns different weights, is superimposed to obtain comprehensive aberration, the Part II of the tested camera lens is opposite
In the Part I, in a certain position, there are full filed synthesis aberration minimum, the minimum as synthesis result of the synthesis aberration, root
The Part II position of the tested camera lens is adjusted according to the comprehensive aberration minimum, realize the Part I and
The Part II is assembled into optical lens.
According to the second aspect of the invention, there is provided a kind of assembling device of full filed camera lens, including：
Some point light sources, identical incident beam is produced for the different field positions in the tested camera lens；The point
The focal plane of light source from the tested camera lens is sent with a light beam for fixing dispersion angle, the tested camera lens is entered, through institute
Tested camera lens outgoing is stated into collimated light beam；
Telescopic system, for expanding the collimated light beam of the tested camera lens outgoing；
Wavefront measurement component, the wavefront that the collimated light beam for receiving the telescopic system outgoing is formed, measures reality
Border wavefront information, the wavefront include the wavefront of non-zero-degree visual field at tested camera lens zero degree visual field and at least one, and synthesis regards entirely
The wavefront information, for assembling when adjusts the tested camera lens.
Preferably, some point light sources include：
Light source, for producing with a light beam for fixing dispersion angle；
Graticle, there is the several holes of arrangement thereon, and the light beam with a fixation dispersion angle of the light source is illuminated institute
Graticle is stated, forms some point light sources of arrangement.
Preferably, when measuring the wavefront of the tested camera lens zero degree visual field, the point light source (light source, described point
Draw plate), the tested camera lens, the telescopic system and the wavefront measurement component, in same light path and positioned at same
On one optical axis.
Preferably, when measuring the wavefront of the tested camera lens non-zero-degree visual field, the point light source is (light source, described
Graticle), the tested camera lens be located on primary optic axis, the telescopic system and the wavefront measurement component are located at the second light
On axis, there is an angle between the primary optic axis and second optical axis, wherein primary optic axis refers to the light of tested camera lens
Axis, the second optical axis refer to the optical axis of telescopic system.
Preferably, the tested camera lens includes Part I and Part II, wherein：The Part I is fixed part
Point, the Part II is adjustable part, and the light beam of the point light source is successively by the Part I and second described
Point, and the incident telescopic system after the Part II.
It is highly preferred that the wavefront information that the wavefront measurement component measures passes to follow-up processor, the processing
Device is fitted wavefront information with zernike polynomial, decomposites every aberration, and different weights is assigned to every aberration, folds
It is added together to obtain comprehensive aberration, tested camera lens to be adjusted (the tested camera lens Part II) exists in a certain position to be regarded entirely
The comprehensive aberration in field is minimum, and directly tune is controlled to the position of the tested camera lens Part II according to the synthesis aberration minimum
It is whole.
Preferably, described device further comprises rotatable platform, and the rotatable platform is used to carry the telescopic system
With the wavefront measurement component, and it can rotate around own torque or move back and forth along optical axis；The shaft is vertical with the optical axis.
It is highly preferred that the rotatable platform, its initial position keeps the telescopic system and the wavefront measurement component
On optical axis, for measuring tested camera lens zero degree visual field wavefront；When the tested camera lens non-zero-degree visual field wavefront of measurement, described in change
Rotatable platform position, makes optical axis outer light beam vertically enter the telescopic system.
It is highly preferred that the wavefront measurement component uses Wavefront sensor, it is preferred to use Shack Hartmann wave front sensor,
Shack Hartmann wave front sensor precision is high, and measurement is real-time.
Compared with prior art, the present invention has following beneficial effect：
Present invention assembling apparatus structure advantages of simple, obtains wavefront information by the co-ordination of each optics, has
There is the measurement accuracy of higher, by measuring the different wavefront informations of visual field, can directly calculate the aberration of camera lens, meet camera lens
High performance demands.The assembling device of present invention wavefront measurement substitutes traditional assembling device based on MTF, improves assembly precision
And efficiency, realize the large-scale production of high-performance camera lens.
Further, apparatus of the present invention is high using Shack Hartmann wave front sensor precision, and wavefront measurement precision is reachable
1/20 wavelength, measurement is real-time, and eyeglass assembling speed is high, and work efficiency is high, low to operating environment requirements.Mirror can be measured
The wavefront of head full filed, meets the axis external pelivimetry demand of camera lens.
In addition, assembly method of the present invention breaks existing conventional design thinking, use wavefront measuring method substitute using MTF as
The assembly method of evaluation criterion, real-time, reaction faster, easy to apply in producing line, realizes large-scale production.
The above-mentioned apparatus and method of the present invention, it is applied widely, the small-sized camera lens such as mobile lens, security lens is applicable in, can
Realize whole automated controls, may be used in the large-scale producing line in factory, realize the high-volume Automated assembly of camera lens.
Brief description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is existing camera lens MTF measuring principle figures；
Fig. 2 is the assembling apparatus structure schematic diagram of optical lens in one embodiment of the invention；
Fig. 3 is one embodiment of the invention graticle schematic surface；
Fig. 4 is the operating diagram of one embodiment of the invention device；
In figure：1 is LED area light source, and 2 be graticle, and 3 be tested camera lens Part I, and 4 be to be tested camera lens Part II, 5
It is telescopic system for rotatable platform, 6,7 be Shack Hartmann wave front sensor.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiments will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As shown in Figure 1, it is existing camera lens MTF measuring principle figures, i.e.,：Marked using MTF (modulation transfer function) as evaluation
It is accurate, it is desirable to detect the mtf value of different visual fields.Adjustment principle during assembling is surveyed when eyeglass has eccentric or inclination in camera lens
The mtf value measured can differ more with design load, according to the mtf value measured and the contrast of design load, it is possible to instruct adjustment
Eyeglass, untill mtf value reaches requirement.
Below before the embodiment of the present invention is illustrated, the relational language being related to is explained, is specifically included：
Aberration：The preferably difference between imaging and the actual imaging of optical system.
Wavefront：Ripple travels to the curved surface that equiphase surface forms at a certain position and is known as wavefront.
Wavefront sensor：Wavefront error is measured, wavefront information is converted into the detector of control signal.
Shack-Hartmann wavefront sensor (Shack-Hartmann)：Shack Hartmann wave front sensor is in the classical summer
The wavefront measurement instrument to grow up on the basis of the graceful measuring method of Elkhart.Shack Hartmann wave front sensor is mainly by micro-
Lens array and high-speed CCD composition, through microlens array beam splitting and focus on CCD focal planes before probing wave, by centroid calculation and
Wavefront reconstruction algorithm can obtain detection corrugated.
Modulation transfer function (MTF)：The demand pairs that 1mm interior energies are presented, unit lp/mm.
Modulation transfer function (MTF) contrast curves：Transverse axis MTF, the longitudinal axis are contrast.
Zernike polynomial：Usual people can describe the aberration of optical system using the form of power series expansion.By
It is consistent in the form of zernike polynomial with the aberrational polynomial observed in optical detection, thus it is frequently used to retouch
State wavefront properties.
On axis described in following embodiments and outside axis, it is relative to for optical axis, optical axis is exactly tested camera lens
Rotation axes of symmetry, light beam do not change along optical axis light path.Wavefront is to be tested camera lens zero degree visual field wavefront, axis external wave on axis
The preceding wavefront for tested camera lens non-zero-degree visual field.
As shown in Figure 2,4, it is the preferred embodiment structure diagram for assembling device of full filed camera lens of the present invention, wherein
Including：LED area light source 1, graticle 2, is tested camera lens Part I 3, is tested camera lens Part II 4, telescopic system 6 and Shack
Hartmann wave front sensor 7.
The device is measured wavefront and the outer wavefront information of axis on axis, is further adjusted by the information by ingehious design light path
The position of whole tested camera lens Part II 4, completes assembling.Wherein：
LED area light source 1, for producing with a light beam for fixing dispersion angle；
Graticle 2, there is the hole of proper alignment thereon, is illuminated by LED area light source 1, equivalent to the point light source of arrangement, such as Fig. 3
It is shown；The graticle 2 is located on the focal plane of tested camera lens, from what focal plane was sent there is a light beam for fixing dispersion angle to enter
Tested camera lens, is emitted into collimated light beam through the tested camera lens；The point light source is used for the different visual fields in the tested camera lens
Position produces identical incident beam；
Tested camera lens, including Part I 3 and Part II 4, the Part I 3 are fixed part, described second
It is adjustable part to divide 4, and the light beam of the point light source passes through the Part I 3 and the Part II 4 successively, and described in warp
The incident telescopic system 6 after Part II；
Telescopic system 6, for expanding the collimated light beam of the tested camera lens outgoing；
Shack Hartmann wave front sensor 7, the ripple formed for receiving the collimated light beam that the telescopic system 6 is emitted
Before, measure actual wavefront information, the wavefront includes wavefront and the outer wavefront of axis on axis, wavefront and the axis external wave on the axis
The preceding wavefront formed at the tested camera lens full filed diverse location, considers the wavefront situation of full filed, during for assembling
Adjust the tested camera lens.
In another preferred embodiment, described device can further include：Rotatable platform 5, the rotatable platform 5 are used
In the carrying telescopic system 6 and the Shack Hartmann wave front sensor 7, and can be around the axis (machinery of rotatable platform itself
Axis) rotate or moved back and forth along optical axis (same optical axis of telescopic system 6 and Shack Hartmann wave front sensor 7).
In the embodiment using the rotatable platform 5, the initial position of the rotatable platform 5 keeps the telescope system
System 6 and the Shack Hartmann wave front sensor 7 are in same optical axis, at this time, LED area light source 1, graticle 2, tested camera lens the
A part 3, tested camera lens Part II 4, telescopic system 6 and Shack Hartmann wave front sensor 7 are used in same optical axis
In wavefront on measurement axis.
When measuring wavefront outside axis, change 5 position of rotatable platform, the telescopic system 6 and the Shack Hart
Graceful Wavefront sensor 7 is in same optical axis, LED area light source 1, graticle 2, tested camera lens Part I 3, tested second, camera lens
Points 4 on another optical axis, and shape is in an angle between two optical axises.
Wavefront on above-mentioned axis and outside axis forms the wavefront at tested camera lens full filed diverse location, comprehensive in assembling
The wavefront situation for considering full filed is closed, for adjusting the position of tested camera lens Part II 4, completes assembling.
In above-mentioned tested camera lens, Part I 2 and Part II 3 are all eyeglasses, and a usual camera lens is exactly an optics
System, has seven or eight eyeglasses, this optical system, is divided into two parts, Part I can include big portion by even more eyeglasses
Divide eyeglass, Part II is typically a two panels eyeglass.This two parts, which is assembled together, just constitutes whole optical lens.Measured lens
Head includes Part I 1 and Part II 2 forms commanding lens entirety to be installed, is placed on five dimensions adjustment platform.
As shown in Fig. 2, when measuring wavefront on axis, the LED area light source 1, the graticle 2, the tested camera lens, institute
Telescopic system 6 and the Shack Hartmann wave front sensor 7 are stated, in same light path and in same optical axis；Turn
The initial position of moving platform 5 keeps telescopic system 6 and Shack Hartmann wave front sensor 7 on optical axis, for measuring axis
Wavefront.At this time, LED area light source 1 has the light beam with a fixation dispersion angle of certain incidence angle, and light beam passes through on graticle 2
The hole of proper alignment, this some holes can regard proper alignment, identical point light source as.Graticle 2 is located at tested camera lens
Focal plane on, from what focal plane was sent there is a light beam for fixing dispersion angle to enter tested camera lens, have one to fix dispersion angle
Light beam be transformed into collimated light beam by tested camera lens.Collimated light beam expands (matching and amplification) by telescopic system 6, incident
Onto Shack Hartmann wave front sensor 7.The wavefront that Shack Hartmann wave front sensor 7 detects, can use Ze Nike multinomial
Formula is fitted, and decomposites every aberration.
Tested camera lens Part I 3 is fixed, and tested camera lens Part II 4 is placed on five dimensions adjustment platform, five dimensions
Adjustment platform can be moved along light path, and five dimensions refer to X, Y, Z D translations, plus X, Y two-dimensional rotaries in five dimension adjustment platforms；General side
To definition：Right-handed coordinate system, optical axis direction are Z axis, and XY may be prescribed as X upward directions, and Y is vertical paper direction.
As shown in figure 4, when measuring wavefront outside axis, the LED area light source 1, the graticle 2, the tested camera lens position
In on primary optic axis, the telescopic system 6 and the Shack Hartmann wave front sensor 7 are located on the second optical axis, and described
There is an angle between one optical axis and second optical axis.At this point it is possible to change 5 position of rotatable platform, make axis outer light beam vertical
Incident telescopic system 6.
Wavefront on the axis and outside axis forms the wavefront at tested camera lens full filed diverse location, Shack Hartmann's wavefront
Sensor 7 detects wavefront, and is fitted with zernike polynomial, decomposites every aberration, considers the ripple of full filed
Preceding situation, to adjust tested camera lens Part II.
In the above embodiment of the present invention, the wavefront for considering full filed can be in the following way：Difference is regarded
The aberration that the wavefront calculations of field position come out assigns different weights, is superimposed to obtain comprehensive aberration, adjusts and be tested camera lens
Part II, when comprehensive aberration reaches minimum value, then judges to be adjusted to optimum position, adjustment is completed, so as to fulfill first
Part and the assembling of Part II.
Assembling apparatus structure advantages of simple in the above embodiment of the present invention, is obtained by the co-ordination of each optics
With wavefront information outside axis on to axis, there is the measurement accuracy of higher, camera lens can directly be calculated by the wavefront information of measurement
Aberration, meet the high performance demands of camera lens.
The assembling device of present invention wavefront measurement substitutes traditional assembling device based on MTF, improves assembly precision and effect
Rate, realizes the large-scale production of high-performance camera lens.
The present invention can use Shack Hartmann wave front sensor, and the sensor accuracy is high, and wavefront measurement precision is up to 1/
20 wavelength, measurement is real-time, and eyeglass assembling speed is high, and work efficiency is high, low to operating environment requirements.In addition, at other
In embodiment, other Wavefront sensors can also be used, it is not limited to Shack Hartmann wave front sensor 7.
Above is one embodiment of apparatus of the present invention, certainly, in other embodiments, above device can further be located
Device is managed, the wavefront which is used to detect Shack Hartmann wave front sensor 7 is handled, and Ze Nike can be used multinomial
Formula is fitted, and decomposites every aberration, directly tested camera lens Part II 3 is adjusted, so as to complete to assemble.
In other embodiments, above-mentioned LED area light source 1 can use other replacement light sources, for example be substituted for mercury lamp light
Source etc..The point light source can also be formed using other modes, it is not limited to the above method.
In an alternative embodiment of the invention, there is provided a kind of assembly method of full filed camera lens, this method are：Measure measured lens
Wavefront at head full filed diverse location；The information of the wavefront at diverse location is handled to obtain every aberration；It is right
The obtained aberration is integrated, and the rigging position of the tested camera lens is adjusted according to synthesis result.
Specifically, with reference to the apparatus structure of above-described embodiment, the specific implementation of the assembly method of above-mentioned full filed camera lens
Journey, including：
S1：Using a graticle 2, there is the hole of arrangement on the graticle 2, the graticle 2 is located at Jiao of tested camera lens
On face；
S2：The light beam for having a fixation dispersion angle by one illuminates the graticle 2, forms the point light source of arrangement；From position
Enter the measured lens in the light beam with a fixation dispersion angle that the graticle of the focal plane of the tested camera lens is sent
Head, is emitted into collimated light beam through the tested camera lens；
S3：The collimated light beam of the tested camera lens outgoing is matched and amplified using telescopic system 6；
S4：The ripple for the collimated light beam formation that the telescopic system 6 is emitted is received using Shack Hartmann wave front sensor 7
Before, measure actual wavefront information, the wavefront includes wavefront and the outer wavefront of axis on axis, wavefront and the axis external wave on the axis
The preceding wavefront formed at the tested camera lens full filed diverse location, considers the wavefront situation of full filed, during for assembling
Adjust the tested camera lens.
In the above method, the tested camera lens, wherein the adjustable Part II 4 is placed on five dimensions adjustment platform,
The five dimensions adjustment platform is moved along light path.
It is the LED area light source 1, the graticle 2, described when measuring wavefront on axis as shown in Fig. 2, in the above method
Tested camera lens, the telescopic system 6 and the Wavefront sensor 7, in same light path and in same optical axis；
It is the LED area light source 1, the graticle 2, described when measuring wavefront outside axis as shown in figure 4, in the above method
Tested camera lens is located on primary optic axis, and the telescopic system 6 and the Shack Hartmann wave front sensor 7 are located at the second optical axis
On, there is an angle between the primary optic axis and second optical axis.
In the above method, the tested camera lens includes Part I 3 and Part II 4, wherein：The Part I 3 is
Fixed part, the Part II 4 are adjustable parts, and the light beam of the point light source passes through the Part I 3 and institute successively
State Part II 4, and the incident telescopic system after the Part II 4；Wavefront on the axis and outside axis forms quilt
The wavefront at camera lens full filed diverse location is surveyed, the wavefront situation of full filed is considered, to adjust tested camera lens Part II
4。
In the above method, the wavefront information that the Shack Hartmann wave front sensor 7 detects passes to a processor, described
Processor is fitted wavefront information with zernike polynomial, decomposites every aberration, according to the items aberration directly to institute
State tested camera lens Part II 4 and be controlled adjustment.Processor can realize the processing of the wavefront information by corresponding software,
Certainly, in other embodiments, other modes can also be used to realize the processing of wavefront information, obtains every aberration.
Assembly method of the present invention breaks existing conventional design thinking, uses wavefront measuring method to substitute using MTF and is used as evaluation
The assembly method of standard, real-time, reaction faster, easy to apply in producing line, realizes large-scale production.
The above-mentioned apparatus and method of the present invention are applied widely, can be used for the small-sized camera lens such as mobile lens, security lens, can
Realize whole automated controls, so as to be applied in the large-scale producing line in factory, realize the high-volume Automated assembly of camera lens.
It is only a preferred embodiment that wavefront on above method axis and outside axis, which is formed, in other embodiments of the method
In, the wavefront on axis and outside axis, which is formed, can also use other modes, it is not limited to be carried out using above-mentioned device, as long as energy
Enough realize the measurement of the wavefront information on axis and outside axis, can achieve the object of the present invention.
It should be noted that the step in the method provided by the invention, can utilize corresponding component in described device
Or part is achieved, the step of technical solution that those skilled in the art are referred to described device realizes the method
Flow, i.e. the embodiment in the system can be regarded as realizing the preference of the method, and it will not be described here.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (13)
- A kind of 1. assembly method of full filed camera lens, it is characterised in that including：Wavefront at the tested camera lens full filed at least two of measurement at diverse location；The information of the wavefront at diverse location is handled to obtain every aberration；The obtained aberration is integrated, the rigging position of the tested camera lens is adjusted according to synthesis result.
- 2. the assembly method of full filed camera lens according to claim 1, it is characterised in that the tested camera lens of measurement regards entirely Wavefront at field at least two at diverse location, refers to：Non-zero-degree visual field at the tested camera lens zero degree visual field and at least one of measurement Wavefront, forms the wavefront at the tested camera lens full filed diverse location.
- 3. the assembly method of full filed camera lens according to claim 1, it is characterised in that the institute at diverse location The information for stating wavefront is handled to obtain each aberration, is referred to：Letter to the wavefront being tested at camera lens full filed diverse location Breath is fitted with zernike polynomial respectively, decomposites every aberration.
- 4. according to the assembly method of claim 1-3 any one of them full filed camera lenses, it is characterised in that the tested camera lens Wavefront at full filed at least two at diverse location, forms in the following ways：Using some point light sources, identical incident beam is produced for the different field positions in the tested camera lens；The point The focal plane of light source from the tested camera lens is sent with a light beam for fixing dispersion angle, the tested camera lens is entered, through institute Tested camera lens outgoing is stated into collimated light beam；The collimated light beam of the tested camera lens outgoing is expanded, forms the wavefront at tested camera lens full filed diverse location.
- 5. the assembly method of full filed camera lens according to claim 4, it is characterised in that the tested camera lens is divided into two Point, Part I is fixed part, and Part II is adjustable part, and the point light source is produced fixes dispersion angle with one Light beam is emitted after the Part I and the Part II successively.
- 6. the assembly method of full filed camera lens according to claim 5, it is characterised in that the described pair of obtained aberration Integrated, referred to：The every aberration handled the wavefront at diverse location assigns different weights, is superimposed It is comprehensive there are full filed in a certain position relative to the Part I to comprehensive aberration, the Part II of the tested camera lens It is minimum to close aberration, the minimum as synthesis result of the synthesis aberration, the institute according to the comprehensive aberration minimum to the tested camera lens State Part II position to be adjusted, realize that the Part I and the Part II are assembled into optical lens.
- A kind of 7. assembling device of full filed camera lens, it is characterised in that including：Some point light sources, identical incident beam is produced for the different field positions in the tested camera lens；The point light source Sent from the focal plane of the tested camera lens with a light beam for fixing dispersion angle, the tested camera lens is entered, through the quilt Camera lens outgoing is surveyed into collimated light beam；Telescopic system, for expanding the collimated light beam of the tested camera lens outgoing；Wavefront measurement component, the wavefront that the collimated light beam for receiving the telescopic system outgoing is formed, measures actual ripple Preceding information, the wavefront include the wavefront of non-zero-degree visual field at tested camera lens zero degree visual field and at least one, comprehensive full filed The wavefront information, for assembling when, adjust the tested camera lens.
- 8. the assembling device of full filed camera lens according to claim 7, it is characterised in that some point light sources include：Light source, for producing with a light beam for fixing dispersion angle；Graticle, there is the several holes of arrangement thereon, and the light beam with a fixation dispersion angle of the light source is illuminated described point Plate is drawn, forms some point light sources of arrangement.
- 9. the assembling device of full filed camera lens according to claim 7, it is characterised in that when the measurement tested camera lens zero When spending the wavefront of visual field, the point light source, the tested camera lens, the telescopic system and the wavefront measurement component, are located at In same light path and in same optical axis；When measuring the wavefront of the tested camera lens non-zero-degree visual field, the point light source, the tested camera lens are located at primary optic axis On, the telescopic system and the wavefront measurement component are located on the second optical axis, the primary optic axis and second optical axis Between there is an angle, wherein primary optic axis refers to the optical axis of tested camera lens, and the second optical axis refers to the light of telescopic system Axis.
- 10. the assembling device of full filed camera lens according to claim 7, it is characterised in that the tested camera lens includes the A part and Part II, wherein：The Part I is fixed part, and the Part II is to can adjust part, the point The light beam of light source passes through the Part I and the Part II, and the incident telescope after the Part II successively System.
- 11. the assembling device of full filed camera lens according to claim 10, it is characterised in that the wavefront measurement component is visited The wavefront information measured passes to follow-up processor, and the processor intends wavefront information with zernike polynomial Close, decomposite every aberration, different weights is assigned to every aberration, be superimposed to obtain comprehensive aberration, the measured lens Head Part II in a certain position there are full filed synthesis aberration is minimum, according to the synthesis aberration minimum directly to the measured lens The position of head Part II is controlled adjustment.
- 12. according to the assembling device of claim 7-11 any one of them full filed camera lenses, it is characterised in that described device into One step includes rotatable platform, and the rotatable platform is used to carrying the telescopic system and the wavefront measurement component, and can be around Own torque is rotated or moved back and forth along optical axis, and the shaft is vertical with the optical axis.
- 13. the assembling device of full filed camera lens according to claim 12, it is characterised in that the rotatable platform, at the beginning of it The beginning position holding telescopic system and the wavefront measurement component are on optical axis, for measuring tested camera lens zero degree visual field ripple Before；When the tested camera lens non-zero-degree visual field wavefront of measurement, change the rotatable platform position, make the tested camera lens from the prestige Remote mirror systematic optical axis outgoing goes out telescopic system described in light beam vertical incidence.
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