CN107525650A - Camera lens luminosity response scale determines device and method - Google Patents
Camera lens luminosity response scale determines device and method Download PDFInfo
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- CN107525650A CN107525650A CN201610460527.1A CN201610460527A CN107525650A CN 107525650 A CN107525650 A CN 107525650A CN 201610460527 A CN201610460527 A CN 201610460527A CN 107525650 A CN107525650 A CN 107525650A
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- camera lens
- sphere
- measured
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- spherical shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
- G01M11/0264—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested by using targets or reference patterns
Abstract
The embodiment of the present invention provides a kind of camera lens luminosity response scale and determines device and method, is related to camera lens technical field of measurement and test.Wherein, described device includes：Scaling board, it includes the first sphere coverboard, and the first sphere coverboard inner surface scribbles diffusing reflection layer, and the light for being projected onto the first sphere coverboard inner surface carries out uniform diffuse reflection；Fixed structure, it is used to fix camera lens to be measured, wherein, the camera lens to be measured being fixed thereon is at the centre of sphere of the first sphere coverboard；Light source, it is arranged on the opening position outside the maximum field of view angle of camera lens to be measured of scaling board；Baffle plate, it is arranged on scaling board, and the emission side in light source, the light of the direct projection camera lens to be measured sent for blocking light source；Wherein, the centre of sphere angle of the first sphere coverboard is more than or equal to the maximum field of view angle of camera lens to be measured, so that the maximum field of view of camera lens to be measured is in the range of the first sphere coverboard institute envelope.Stated accuracy of the embodiment of the present invention is high, and easily realizes that batch is demarcated.
Description
Technical field
The present embodiments relate to camera lens technical field of measurement and test, more particularly to a kind of camera lens luminosity response degree caliberating device and
Method.
Background technology
The capture apparatus such as camera, video camera have become people life in important tool, people by camera, take the photograph
Camera shoots photo to record drop, the landscape in life.Except including such as image acquisition device in above-mentioned capture apparatus, than
Outside such as various types of imaging sensor parts, main building block also includes optical lens.Optical lens design process
The optical aberrations such as middle generally existing spherical aberration, aberration, astigmatism, distortion, influence the quality of image collected on imaging sensor.For
Guarantee optical lens in actual applications can clap the second best in quality image, it is necessary to when camera lens batch is produced, to camera lens
Test, demarcation, the correction of various parameters are carried out, to ensure the quality for the camera lens produced.
In the prior art, the calibration process of the luminosity response degree to camera lens is：One is placed in the object space of camera lens to be measured
The plane light box of even illumination, then using the lens shooting to be measured plane light box, obtain the image clapped；Then according to the image
Demarcated, for example, picture centre luminosity response degree (can be characterized with gray value) is 250, edge gray scale is 200, finally may be used
According to calibration result, the gray scale at edge is improved a bit, it is all very uniform with regard to the luminosity response degree that can reach whole image.
Producing line scaling scheme is only applicable to the angle of visual field using the plane light box for providing uniform illumination used by prior art
Less camera lens.And now, wide-angle lens is increasingly popularized, and is such as applied to the camera lens more than the 180 degree angle of visual field of panorama camera,
Also carry out luminosity response scale using prior art to determine, because the architectural feature of straight panel can cause the shooting of wide-angle lens peripheral field not
To light box, and then can not be demarcated.Therefore, how to enter accommodating, accurate camera lens brightness to wide-angle lens in producing line to ring
Response is demarcated, and is current urgent problem to be solved.
The content of the invention
The embodiment of the present invention provides a kind of camera lens luminosity response scale and determines device and method, can not to solve prior art
The problem of demarcating big angle of visual field camera lens.
The embodiment of the present invention provides a kind of camera lens luminosity response degree caliberating device, including：
Scaling board, it includes the first sphere coverboard, and the first sphere coverboard inner surface scribbles diffusing reflection layer, for inciting somebody to action
The light for projecting the first sphere coverboard inner surface carries out uniform diffuse reflection；
Fixed structure, it is used to fix camera lens to be measured, wherein, it is fixed at the camera lens to be measured on the fixed structure
At the centre of sphere of the first sphere coverboard；
Light source, it is arranged on the opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board；
Baffle plate, it is arranged on the scaling board, and the emission side in the light source, for blocking the light source direct projection
To the light of the camera lens to be measured；
Wherein, the centre of sphere angle of the first sphere coverboard is more than or equal to the maximum field of view angle of the camera lens to be measured, so that
The maximum field of view of the camera lens to be measured is in the range of the first sphere coverboard institute envelope.
Optionally, in above-mentioned device, the first sphere coverboard is integrating sphere；Wherein,
The opening position outside the camera lens maximum field of view to be measured of the integrating sphere is provided with opening, to pass through the opening
The camera lens to be measured is placed at the centre of sphere of the integrating sphere.
Optionally, in above-mentioned device, the scaling board also includes：
Second sphere coverboard, its radius are more than or less than the radius of the first sphere coverboard；
Annular slab, it is used to connecting the first sphere coverboard and the second sphere coverboard, the annular slab towards described
One side surface of the first spherical shell inner surface scribbles diffusing reflection layer；
Wherein, first spherical shell is on the outside of second spherical shell, relative with second spherical shell；
The light source and the baffle plate setting are on the annular slab.
Optionally, in above-mentioned device, diffusing reflection layer is scribbled on a side surface of the direction light source of the baffle plate.
Optionally, in above-mentioned device, the fixed structure, including：
Fixed mount, it is arranged on the opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board, and
Stretch to the centre of sphere of first spherical shell；
Adjusting means, it is arranged on the fixed mount, stretches to first spherical shell for adjusting the fixed mount
The centre of sphere length so that the camera lens to be measured on the fixed mount is at the centre of sphere of first spherical shell.
Optionally, in above-mentioned device, the light source includes multiple illuminators, multiple equidistant arrangement form bands of illuminator
Shape is set for one week around the camera lens to be measured；Or
The light source is luminous zone.
Optionally, in above-mentioned device, the material of the diffusing reflection layer includes analytical pure sulfuric acid barium or sootiness magnesia.
Optionally, above-mentioned device, in addition to：
Standard lens, for demarcating the luminosity response degree reference parameter of each point on first spherical shell.
The embodiment of the present invention additionally provides a kind of camera lens luminosity response degree scaling method, including：
Using the inner surface for scribbling diffusing reflection layer of the first spherical shell of scaling board, the uniform light that light source is sent is beaten
Dissipate；
Using the baffle plate for being placed in the light source luminescent side, the light of camera lens to be measured is anti-described in the direct projection that the light source is sent
It is incident upon the first sphere coverboard inner surface；
First spherical shell is shot using the camera lens to be measured being fixed on fixed structure, obtains the first figure
Picture；
According to described first image, the luminosity response degree of the camera lens to be measured is demarcated；
Wherein, the camera lens to be measured is at the centre of sphere of the sphere coverboard；The light source is arranged on the scaling board
Opening position outside the maximum field of view angle of the camera lens to be measured；The centre of sphere angle of the first sphere coverboard is more than or equal to described
The maximum field of view angle of camera lens to be measured, so that scope of the maximum field of view of the camera lens to be measured in the first sphere coverboard institute envelope
It is interior.
Optionally, above-mentioned method, in addition to：
First spherical shell is shot using the preset standard camera lens being fixed on fixed structure, obtains second
Image；
According to second image, the luminosity response degree reference parameter of each point on first spherical shell is demarcated；
Accordingly, it is described according to described first image, the luminosity response degree of the camera lens to be measured is demarcated, specifically
For：
According to the luminosity response degree reference parameter and described first image of each point on first spherical shell, to described
The luminosity response degree of camera lens to be measured is demarcated.
Camera lens luminosity response scale provided in an embodiment of the present invention determines device and method, big by using centre of sphere angle is included
In or equal to the camera lens to be measured maximum field of view angle the first spherical shell scaling board so that the maximum field of view of camera lens to be measured
The equal envelope in angle can be avoided in the prior art because lens edge visual field is shot less than plane light box in the first spherical shell
And situation about can not be demarcated occurs；In addition, technical scheme provided in an embodiment of the present invention is easily realized, may be implemented in producing line
Enter accommodating, accurate camera lens luminosity response scale to the camera lens of any angle of visual field to determine, and stated accuracy is high.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 shows a kind of signal for realizing structure of camera lens luminosity response degree caliberating device provided in an embodiment of the present invention
Figure；
Fig. 2 shows that the another kind of camera lens luminosity response degree caliberating device provided in an embodiment of the present invention realizes showing for structure
It is intended to；
Fig. 3 shows a kind of flow signal of camera lens luminosity response degree scaling method provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 shows a kind of signal for realizing structure of camera lens luminosity response degree caliberating device provided in an embodiment of the present invention
Figure.As shown in figure 1, described device provided in an embodiment of the present invention includes：Scaling board 1, fixed structure 2, light source 3 and baffle plate 4.Its
In,
Scaling board 1, it includes the first sphere coverboard 11, and the inner surface of the first sphere coverboard 11 scribbles diffusing reflection layer,
Light for being projected onto the inner surface of the first sphere coverboard 11 carries out uniform diffuse reflection；
Fixed structure 2, it is used to fix camera lens 5 to be measured, wherein, the mirror to be measured being fixed on the fixed structure 2
At first 5 centre ofs sphere in the first sphere coverboard 11；
Light source 3, it is arranged on the opening position outside the maximum field of view angle of the camera lens 5 to be measured of the scaling board 1；
Baffle plate 4, it is arranged on the scaling board 1, and the emission side in the light source 3, for blocking the light source 3
Light of the direct projection to the camera lens 5 to be measured；
Wherein, the centre of sphere angle α of the first sphere coverboard 11 is more than or equal to the maximum field of view angle ψ of the camera lens 5 to be measured,
So that the maximum field of view of the camera lens to be measured 5 is in the range of described first sphere coverboard, 11 envelopes.
Need exist for explanation be：Fixed structure described in the embodiment of the present invention can be fixed on institute as depicted in figs. 1 and 2
State on a certain position outside scaling board, on ground；Can also be fixed on the scaling board positioned at the camera lens to be measured
Opening position outside maximum field of view angle or on the outer surface of scaling board；The scaling board fixes on the ground or other supporting surfaces
On, the present invention is not especially limited to this.
Technical scheme provided in an embodiment of the present invention, it is more than or equal to the camera lens to be measured by using centre of sphere angle is included
Maximum field of view angle the first spherical shell scaling board so that the equal envelope in maximum field of view angle of camera lens to be measured is in the first spherical housing
In vivo, thus can avoid in the prior art because of lens edge visual field shooting situation about can not be demarcated less than plane light box
Occur；In addition, technical scheme provided in an embodiment of the present invention is easily realized, may be implemented in producing line to enter the camera lens of any angle of visual field
Accommodating, accurate camera lens luminosity response scale is determined, and stated accuracy is high.
Further, the first sphere coverboard that the present embodiment provides can be integrating sphere.I.e. the present embodiment provides institute
Integrating sphere of the prior art can directly be selected by stating the scaling board described in device.
Fig. 2 shows that the another kind of camera lens luminosity response degree caliberating device provided in an embodiment of the present invention realizes showing for structure
It is intended to.The difference of itself and the embodiment shown in Fig. 1 is：Scaling board 1 realizes structure.Embodiment shown in Fig. 1 directly uses
Existing integrating sphere is as the scaling board；The structure of scaling board includes used by embodiment shown in Fig. 2：First spherical housing
Plate 11, the second sphere coverboard 12 and annular slab 13.Wherein,
Second sphere coverboard 12, its radius are less than the radius of the first sphere coverboard 11；
Annular slab 13, it is used to connect the first sphere coverboard 11 and the second sphere coverboard 12, the annular slab 13
Diffusing reflection layer is scribbled towards a side surface of the inner surface of the first spherical shell 11；
Wherein, first spherical shell 11 is in the outside of the second spherical shell 12, with second spherical shell
12 is relative；The light source 3 and the baffle plate 4 are arranged on the annular slab 13.
Need exist for supplement be：The radius of the second spherical shell described in the embodiment of the present invention can also be more than described
The radius of first spherical shell, the embodiment of the present invention are not especially limited to this.
Need exist for explanation be：The fixed structure can be arranged on the scaling board (the appearance of such as scaling board
Face), the other positions (ground as depicted in figs. 1 and 2) that may also be arranged on outside the scaling board.The fixed structure is used to pacify
Fill camera lens to be measured fixed bit may pass through the integrating sphere shown in Fig. 1 opening or Fig. 2 described in the second sphere coverboard open
Mouth stretches into the first sphere coverboard, so that the camera lens to be measured being fixed on the fixed structure is in the first sphere coverboard
The centre of sphere at.That is, when the scaling board directly selects integrating sphere, the maximum in the camera lens to be measured of the integrating sphere regards
Opening position outside rink corner is provided with opening, or, two hemisphere of the integrating sphere are linked together by detachable connecting device；
The centre of sphere angle of a hemisphere in the two hemisphere is more than or equal to the maximum field of view angle of the camera lens to be measured, so that described to be measured
The maximum field of view of camera lens is in the range of the first sphere coverboard institute envelope.When the scaling board is from shown in above-mentioned Fig. 2
During structure, opening can be set on the second sphere coverboard, or, the second sphere coverboard and the annular slab are by can
Dismantling connection device links together.
Wherein, it is described be detachably connected refer to staff can when needs place camera lens to be measured in the scaling board,
Two parts (two hemisphere of such as integrating sphere or the second spherical shell and annular slab) being already connected to together are opened, are being placed
Cheng Hou, two parts can be linked together by connector again.When it is implemented, connected using plug with slot, you can claim
To be detachably connected；The specific implementation structure of the detachable connecting device can be found in related content of the prior art, this reality
Example is applied to be not especially limited this.
Further, scribbled on a side surface of the direction light source of the baffle plate 4 provided in the embodiment of the present invention unrestrained
Reflecting layer.The embodiment of the present invention, can be by the light of camera lens to be measured described in the direct projection blocked by being coated with diffusing reflection layer on baffle plate
Line is gone out by diffusing reflection layer non-uniform reflection, further improves the uniform-illumination of the first sphere coverboard described in the scaling board
Property.
Further, the fixed structure described in the embodiment of the present invention can use following structure to realize.It is specifically, described solid
Determining structure includes：Fixed mount and adjusting means.Wherein,
Fixed mount, it is arranged on the opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board, and
Stretch to the centre of sphere of first spherical shell；
Adjusting means, it is arranged on the fixed mount, stretches to first spherical shell for adjusting the fixed mount
The centre of sphere length so that the camera lens to be measured on the fixed mount is at the centre of sphere of first spherical shell.
In the specific implementation, the fixed mount can be exactly a mounting seat and pole, and one end of the pole is arranged on
The opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board, the other end stretch to first spherical shell
The centre of sphere；The other end of the pole is connected with mounting seat, and camera lens to be measured can be fixed in mounting seat.The adjusting means can be set
Put on the pole；For example, the adjusting means can be hydraulic means or gear ＆ rack structure etc., the embodiment of the present invention pair
This is not especially limited, and can realize the structure of regulation pole lifting in the prior art.The pole includes the first son
Pole and the second sub- pole, the second sub- pole are hollow stem, and the first sub- pole is stretched into the described second sub- pole
Empty inner core, the stretching of the relatively described second sub- pole of the described first sub- pole or insertion can be realized by the hydraulic means；Or
Gear is arranged on the described first sub- pole, and rack is arranged on the second sub- pole, and by rotate gear, the second sub- pole is relative
First sub- pole movement.
Further, the light source 3 described in above-described embodiment can include multiple illuminators, as depicted in figs. 1 and 2, in order to
So that the brightness of the first sphere coverboard is evenly, the multiple illuminator equidistantly arrangement form banding ring can be treated around described
Camera lens 5 one weeks is surveyed to set, as meridians one of the Fig. 1 along first spherical shell 11 encloses, or such as Fig. 2, along the annular slab
13 1 weeks.In the specific implementation, in order that the brightness of the inner surface of the first sphere coverboard 11 of scaling board 1 is more uniform, the hair
The arrangement density of body of light is the bigger the better.Or the light source 3 directly selects luminous zone, the luminous zone is directly installed on described
On scaling board 1, being enclosed around the camera lens one to be measured, i.e., such as meridians one of the Fig. 1 along first spherical shell 11 encloses, or such as
Fig. 2, along the annular slab 13 1 weeks.
In addition, be coated in the diffusing reflection layer of the first sphere coverboard inner surface in the specific implementation, in above-described embodiment
Material includes analytical pure sulfuric acid barium or sootiness magnesia.
Further, in actual calibration process, on the first sphere coverboard inner surface the brightness of each point still have
Fine distinction, in order to improve the degree of accuracy of scale, the camera lens luminosity response scale provided in an embodiment of the present invention
Determine device, may also include：Standard lens.The standard lens is used for the luminosity response degree for demarcating each point on first spherical shell
Reference parameter, to be modified when being demarcated to camera lens to be measured using the luminosity response degree reference parameter to the parameter calibrated,
The calibrated error caused with the brightness disproportionation eliminated because of the first sphere coverboard inner surface in itself.Wherein, the standard lens can be with
It is considered as the preferable camera lens that luminosity response degree difference is all not present in any angle of visual field.
Fig. 3 shows a kind of flow signal of camera lens luminosity response degree scaling method provided in an embodiment of the present invention.Such as Fig. 3
Methods described shown, that the present embodiment provides, including：
Step 101, using scaling board the first spherical shell the inner surface for scribbling diffusing reflection layer, the light that light source is sent
Line carries out uniform diffuse reflection.
Step 102, using the baffle plate for being placed in the light source luminescent side, camera lens to be measured described in the direct projection that the light source is sent
Light blocked.
Step 103, using the camera lens to be measured being fixed on fixed structure first spherical shell is shot, obtained
First image.
Step 104, according to described first image, the luminosity response degree of the camera lens to be measured is demarcated.
Wherein, the camera lens to be measured is at the centre of sphere of the sphere coverboard；The light source is arranged on the scaling board
Opening position outside the maximum field of view angle of the camera lens to be measured；The centre of sphere angle of the first sphere coverboard is more than or equal to described
The maximum field of view angle of camera lens to be measured, so that scope of the maximum field of view of the camera lens to be measured in the first sphere coverboard institute envelope
It is interior.
Need exist for explanation be：By described first image in the present embodiment, the luminosity response to the camera lens to be measured
The specific implementation principle demarcated is spent, reference can be made to corresponding contents of the prior art, here is omitted.
Camera lens luminosity response scale provided in an embodiment of the present invention determines device and method, big by using centre of sphere angle is included
In or equal to the camera lens to be measured maximum field of view angle the first spherical shell scaling board so that the maximum field of view of camera lens to be measured
The equal envelope in angle can be avoided in the prior art because lens edge visual field is shot less than plane light box in the first spherical shell
And situation about can not be demarcated occurs；In addition, technical scheme provided in an embodiment of the present invention is easily realized, may be implemented in producing line
Enter accommodating, accurate camera lens luminosity response scale to the camera lens of any angle of visual field to determine, and stated accuracy is high.
Need exist for explanation be：Realize method provided in an embodiment of the present invention can be right in said apparatus embodiment
The camera lens luminosity response degree caliberating device of structure is answered, specifically, the specific implementation structure of described device can be found in above-described embodiment
In corresponding contents, here is omitted.
Further, the methods described that above-described embodiment provides, may also include：
Step 105, using the preset standard camera lens being fixed on fixed structure first spherical shell is shot,
Obtain the second image.
Step 106, according to second image, demarcate the luminosity response degree of each point on first spherical shell with reference to ginseng
Number.
Accordingly, above-mentioned steps 104, described according to described first image, enter to the luminosity response degree of the camera lens to be measured
Rower is determined, and is specially：
According to the luminosity response degree reference parameter and described first image of each point on first spherical shell, to described
The luminosity response degree of camera lens to be measured is demarcated.
The embodiment of the present invention is demarcated bright on the multiple setting latitudes of first spherical shell by using the standard lens
Spend responsiveness reference parameter, can when being demarcated to camera lens to be measured using the luminosity response degree reference parameter to the parameter that calibrates
It is modified, the calibrated error caused with the brightness disproportionation eliminated because of the first sphere coverboard inner surface in itself.Wherein, the standard
Camera lens can be considered as the preferable camera lens that luminosity response degree difference is all not present in any angle of visual field.
It should be noted that：For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because
According to the present invention, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module are not necessarily of the invention
It is necessary.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, it can be as the part that unit is shown or may not be physics list
Member, you can with positioned at a place, or can also be distributed on multiple NEs.It can be selected according to the actual needs
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
Realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on such understanding, on
The part that technical scheme substantially in other words contributes to prior art is stated to embody in the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including some fingers
Make to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform each implementation
Method described in some parts of example or embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
- A kind of 1. camera lens luminosity response degree caliberating device, it is characterised in that including：Scaling board, it includes the first sphere coverboard, and the first sphere coverboard inner surface scribbles diffusing reflection layer, for that will project Light to the first sphere coverboard inner surface carries out uniform diffuse reflection；Fixed structure, it is used to fix camera lens to be measured, wherein, the camera lens to be measured being fixed on the fixed structure is in institute At the centre of sphere for stating the first sphere coverboard；Light source, it is arranged on the opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board；Baffle plate, it is arranged on the scaling board, and the emission side in the light source, for blocking the light source direct projection to institute State the light of camera lens to be measured；Wherein, the centre of sphere angle of the first sphere coverboard is more than or equal to the maximum field of view angle of the camera lens to be measured, so that described The maximum field of view of camera lens to be measured is in the range of the first sphere coverboard institute envelope.
- 2. device according to claim 1, it is characterised in that the first sphere coverboard is integrating sphere；Wherein,The opening position outside the camera lens maximum field of view to be measured of the integrating sphere is provided with opening, to be open by described by institute Camera lens to be measured is stated to be placed at the centre of sphere of the integrating sphere.
- 3. device according to claim 1, it is characterised in that the scaling board also includes：Second sphere coverboard, its radius are more than or less than the radius of the first sphere coverboard；Annular slab, it is used to connecting the first sphere coverboard and the second sphere coverboard, the annular slab towards described first One side surface of spherical shell inner surface scribbles diffusing reflection layer；Wherein, first spherical shell is on the outside of second spherical shell, relative with second spherical shell；It is described Light source and the baffle plate setting are on the annular slab.
- 4. according to device according to any one of claims 1 to 3, it is characterised in that the direction light source of the baffle plate Diffusing reflection layer is scribbled on one side surface.
- 5. according to device according to any one of claims 1 to 3, it is characterised in that the fixed structure, including：Fixed mount, it is arranged on the opening position outside the maximum field of view angle of the camera lens to be measured of the scaling board, and stretches to The centre of sphere of first spherical shell；Adjusting means, it is arranged on the fixed mount, and the ball of first spherical shell is stretched to for adjusting the fixed mount The length of the heart, so that the camera lens to be measured on the fixed mount is at the centre of sphere of first spherical shell.
- 6. according to device according to any one of claims 1 to 3, it is characterised in thatThe light source includes multiple illuminators, and the multiple equidistant arrangement form banding ring of illuminator is around the camera lens one to be measured Week is set；OrThe light source is luminous zone.
- 7. device according to claim 1, it is characterised in that the material of the diffusing reflection layer include analytical pure sulfuric acid barium or Sootiness magnesia.
- 8. device according to claim 1, it is characterised in that also include：Standard lens, for demarcating the luminosity response degree reference parameter of each point on first spherical shell.
- A kind of 9. camera lens luminosity response degree scaling method, it is characterised in that including：Using the inner surface for scribbling diffusing reflection layer of the first spherical shell of scaling board, the light that light source is sent uniformly is overflow Reflection；Using the baffle plate for being placed in the light source luminescent side, the light of camera lens to be measured is hidden described in the direct projection that the light source is sent Gear；First spherical shell is shot using the camera lens to be measured being fixed on fixed structure, obtains the first image；According to described first image, the luminosity response degree of the camera lens to be measured is demarcated；Wherein, the camera lens to be measured is at the centre of sphere of the sphere coverboard；The light source is arranged on being in for the scaling board Opening position outside the maximum field of view angle of the camera lens to be measured；The centre of sphere angle of the first sphere coverboard is more than or equal to described to be measured The maximum field of view angle of camera lens, so that the maximum field of view of the camera lens to be measured is in the range of the first sphere coverboard institute envelope.
- 10. according to the method for claim 9, it is characterised in that also include：First spherical shell is shot using the preset standard camera lens being fixed on fixed structure, obtains the second figure Picture；According to second image, the luminosity response degree reference parameter of each point on first spherical shell is demarcated；Accordingly, it is described according to described first image, the luminosity response degree of the camera lens to be measured is demarcated, is specially：According to the luminosity response degree reference parameter and described first image of each point on first spherical shell, to described to be measured The luminosity response degree of camera lens is demarcated.
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| CN201610460527.1A CN107525650A (en) | 2016-06-22 | 2016-06-22 | Camera lens luminosity response scale determines device and method |
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