CN108594425A - Contrast method for continuously adjusting - Google Patents
Contrast method for continuously adjusting Download PDFInfo
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- CN108594425A CN108594425A CN201810013832.5A CN201810013832A CN108594425A CN 108594425 A CN108594425 A CN 108594425A CN 201810013832 A CN201810013832 A CN 201810013832A CN 108594425 A CN108594425 A CN 108594425A
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- Prior art keywords
- grating
- sinusoidal grating
- contrast
- sinusoidal
- continuously
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Classifications
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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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/44—Grating systems; Zone plate systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1828—Diffraction gratings having means for producing variable diffraction
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Projection Apparatus (AREA)
Abstract
Contrast method for continuously adjusting of the present invention belongs to optics, field of precision instruments；Targeted contrast continuously adjusts grating,, period identical first sinusoidal grating identical including direction setting up and down and the second sinusoidal grating, the counter motion under the adjusting of grating regulating mechanism of first sinusoidal grating and the second sinusoidal grating, the grating regulating mechanism provide power by the power transmission being mounted on the base；The contrast method for continuously adjusting drives drive rod rotation, and then drive swivel rotation, the first sinusoidal grating and the second sinusoidal grating counter motion is driven by the external part on swivel, realize that contrast continuously adjusts by controlling the rotation of motor in power transmission；Under the structure of the present invention, motor rotation can be controlled at any time according to actual needs, make the first sinusoidal grating and the continuous counter motion of the second sinusoidal grating, realize that contrast is continuously adjusted in real time.
Description
The application is application for a patent for invention《A kind of contrast continuously adjusts grating and contrast method for continuously adjusting》Point
Case application.
The original bill applying date：2016-07-24.
Original bill application number：201610585597X.
Original bill denomination of invention：A kind of contrast continuously adjusts grating and contrast method for continuously adjusting.
Technical field
Contrast method for continuously adjusting of the present invention belongs to optics, field of precision instruments.
Background technology
The optical device being made of a large amount of wide equidistant parallel slits is known as grating.Common grating is in sheet glass
On carve a large amount of parallel scores and be made, indentation is lightproof part, and the smooth part between two indentations can be equivalent to narrow with light transmission
Slot array.Although grating structure is uncomplicated, extensive use is all had in numerous optical instruments, also plays crucial work
With.
The grating come, since transmitance will not change, the comparison under identical intensity of illumination are carved on the glass sheet
Degree is fixed value, if it is possible to change contrast as needed in application process, then this grating will have more extensively
Application, play the effect of bigger, play more revolutionary impact.However, finding contrast not yet can continuously adjust
Grating.
Invention content
In view of the above-mentioned problems, the invention discloses a kind of contrasts to continuously adjust grating and contrast method for continuously adjusting,
It can realize the technical purpose that contrast continuously adjusts.
A kind of contrast continuously adjusts grating, including direction setting up and down is identical, period identical first sinusoidal grating
With the second sinusoidal grating, the counter motion under the adjusting of grating regulating mechanism of first sinusoidal grating and the second sinusoidal grating,
The grating regulating mechanism provides power by the power transmission being mounted on the base；
Between first sinusoidal grating is mounted on two first supports by linear bearing, described two first supports
Be symmetrically mounted on pedestal, the linear bearing can ensure the first sinusoidal grating level altitude horizontal in-plane moving；The
Two the first drive links with straight slot are arranged in one sinusoidal grating bottom symmetrical；Second sinusoidal grating is pacified by linear bearing
Between two second supports, described two second supports are symmetrically mounted on pedestal, and the linear bearing can ensure
Horizontal in-plane moving of second sinusoidal grating in level altitude；Two the with straight slot are arranged in second sinusoidal grating bottom symmetrical
Two drive links；
The grating regulating mechanism is made of symmetrically arranged two clamp mechanisms, and each clamp mechanism includes two coaxial arrangements
Swivel, the swivel supports by the swivel holder that is mounted on the base；It is connected by shaft between two swivels, it is each to turn
Outside be both provided with external part, two external parts on the swivel of same clamp mechanism two are arranged in swivel diameter of section
Both ends, the external part for being located at outside are inserted into the straight slot of the first drive link, and the external part for being located inside is inserted into the second drive link
In straight slot；
The power transmission includes motor and the drive link that is rotated with motor coaxle, and the drive link is by being mounted on bottom
Transmission bracket support on seat, drive link is connect with shaft bearing or belt connection, imparts power to shaft.
Above-mentioned contrast continuously adjusts grating,
Swivel is supported by the swivel holder being mounted on the base, and concrete structure is：Bearing between swivel and swivel holder
Connection, swivel are interference fitted with bearing inner ring, and swivel holder is fixedly connected with outer race；
Drive link is supported by the transmission bracket being mounted on the base, and concrete structure is：Between drive link and transmission bracket
Bearing connects, and drive link is interference fitted with bearing inner ring, and transmission bracket is fixedly connected with outer race.
The above contrast continuously adjusts grating, and light source is additionally provided with below the second sinusoidal grating.
Between the second sinusoidal grating and light source, it is additionally provided with diffusing transmission plate.
It is a kind of to continuously adjust the contrast method for continuously adjusting realized on grating in above-mentioned contrast, it is rotated by motor,
Drive rod rotation is driven, and then drives swivel rotation, the first sinusoidal grating and the second sinusoidal light are driven by the external part on swivel
Grid counter motion realizes that contrast continuously adjusts.
Above-mentioned contrast method for continuously adjusting, includes the following steps：
Step a, the first sinusoidal grating and the second sinusoidal grating are adjusted
Two external parts on two swivels of same clamp mechanism make the first sine positioned at same perpendicular
Grating and the second sinusoidal grating overlap；
Step b, according to following formula, contrast is adjusted
Wherein, k is contrast, C1For the contrast of the first sinusoidal grating, C2For the contrast of the second sinusoidal grating, l is same
The wheelbase of two external parts on one clamp mechanism two swivel, α are the corner of motor；
Specific derivation process is：
The light intensity expression of first sinusoidal grating is：
The light intensity expression of second sinusoidal grating is：
After motor turns over the angles α, the light intensity expression of the first sinusoidal grating is：
After motor turns over the angles α, the light intensity expression of the second sinusoidal grating is：
Normalization light intensity expression after synthesis is：
Then contrast is：
Above-mentioned contrast method for continuously adjusting, includes the following steps：
Step a, the first sinusoidal grating and the second sinusoidal grating are adjusted
Two external parts on two swivels of same clamp mechanism make the first sine positioned at same perpendicular
Grating and the second sinusoidal grating overlap；
Step b, according to following formula, contrast is adjusted
Wherein, k is contrast, and C is the contrast of the first sinusoidal grating and the second sinusoidal grating, and l is same clamp mechanism two
The wheelbase of two external parts on a swivel, α are the corner of motor；
Specific derivation process is：
The light intensity expression of first sinusoidal grating and the second sinusoidal grating is：
After motor turns over the angles α, the light intensity expression of the first sinusoidal grating is：
After motor turns over the angles α, the light intensity expression of the second sinusoidal grating is：
Normalization light intensity expression after synthesis is：
Then contrast is：
Advantageous effect：Under the structure of the present invention, it is only necessary to control motor rotation, it will be able to make the first sinusoidal grating and the
Two sinusoidal grating counter motions, and then realize contrast adjustment；Simultaneously as the fortune of the first sinusoidal grating and the second sinusoidal grating
Dynamic rail mark is continuous, therefore contrast adjustment is also continuous；And during use, due to can be according to actual needs
Control motor rotation at any time, therefore contrast adjustment is real-time；In conclusion there is the present invention contrast continuously to adjust in real time
Technical advantage.
Description of the drawings
Fig. 1 is the structural schematic diagram that contrast of the present invention continuously adjusts grating specific embodiment one.
Fig. 2 is the structural schematic diagram that contrast of the present invention continuously adjusts grating specific embodiment three.
Fig. 3 is the structural schematic diagram that contrast of the present invention continuously adjusts grating specific embodiment four.
In figure：11 first sinusoidal gratings, 12 second sinusoidal gratings, 13 first supports, 14 second supports, 15 first transmissions
Bar, 16 second drive links, 2 grating regulating mechanisms, 21 swivels, 22 shafts, 23 external parts, 24 swivel holders, 3 power transmit dress
Set, 31 motors, 32 drive links, 33 transmission brackets, 4 pedestals, 5 light sources, 6 diffusing transmission plates.
Specific embodiment
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment one
The present embodiment is the embodiment that contrast continuously adjusts grating.
The contrast of the present embodiment continuously adjusts grating, and structural schematic diagram is as shown in Figure 1.The contrast continuously adjusts grating
, period identical first sinusoidal grating 11 and second sinusoidal grating 12 identical including direction setting up and down, described first is sinusoidal
Grating 11 and the second counter motion under the adjusting of grating regulating mechanism 2 of sinusoidal grating 12, the grating regulating mechanism 2 is by installing
Power transmission 3 on pedestal 4 provides power；
Between first sinusoidal grating 11 is mounted on two first supports 13 by linear bearing, described two first
Holder 13 is symmetrically mounted on pedestal 4, the linear bearing can ensure the first sinusoidal grating 11 level altitude horizontal plane
Interior movement；Two the first drive links 15 with straight slot are arranged in first sinusoidal grating, 11 bottom symmetrical；Second sinusoidal grating
Between 12 are mounted on two second supports 14 by linear bearing, described two second supports 14 are symmetrically mounted on pedestal 4,
The linear bearing can ensure the second sinusoidal grating 12 level altitude horizontal in-plane moving；Second sinusoidal grating, 12 bottom
It is symmetrical arranged two the second drive links 16 with straight slot；
The grating regulating mechanism 2 is made of symmetrically arranged two clamp mechanisms, and each clamp mechanism is coaxially set including two
The swivel 21 set, the swivel 21 are supported by the swivel holder 24 on pedestal 4；Pass through shaft 22 between two swivels 21
The outside of connection, each swivel 21 is both provided with external part 23, two external parts being located on two swivels 21 of same clamp mechanism
23 are arranged in the straight slot for the first drive link 15 of insertion of external part 23 for being located at outside at the both ends for turning 21 diameter of sections, are located at
The external part 23 of inside is inserted into the straight slot of the second drive link 16；
The power transmission 3 includes motor 31 and the drive link 32 with 31 coaxial rotating of motor, the drive link 32
It is supported by the transmission bracket 33 on pedestal 4, drive link 32 is connect with 22 bearing of shaft or belt connection, and power is transmitted
To shaft 22.
Specific embodiment two
The present embodiment is the embodiment that contrast continuously adjusts grating.
The contrast of the present embodiment continuously adjusts grating, on the basis of specific embodiment one, further limits：
Swivel 21 is supported by the swivel holder 24 on pedestal 4, and concrete structure is：Swivel 21 and swivel holder 24
Between bearing connect, swivel 21 with bearing inner ring be interference fitted, swivel holder 24 be fixedly connected with outer race；
Drive link 32 is supported by the transmission bracket 33 on pedestal 4, and concrete structure is：Drive link 32 and transmission branch
Bearing connects between frame 33, and drive link 32 is interference fitted with bearing inner ring, and transmission bracket 33 is fixedly connected with outer race.
Specific embodiment three
The present embodiment is the embodiment that contrast continuously adjusts grating.
The contrast of the present embodiment continuously adjusts grating, and structural schematic diagram is as shown in Fig. 2, the contrast continuously adjusts light
Grid further limit 12 lower section of the second sinusoidal grating and are additionally provided with light source 5 on the basis of specific embodiment one.
This structure design so that contrast of the present invention, which continuously adjusts grating, directly to coordinate light source 5 to use, and be not necessarily to
Additional light source.
Specific embodiment four
The present embodiment is the embodiment that contrast continuously adjusts grating.
The contrast of the present embodiment continuously adjusts grating, and structural schematic diagram is as shown in figure 3, the contrast continuously adjusts light
Grid further limit on the basis of specific embodiment three between the second sinusoidal grating 12 and light source 5, are additionally provided with unrestrained saturating
Penetrate plate 6.
Light source 5 sends out light beam, after diffusing transmission plate 6, then is irradiated on the second rectangular raster 12, this structure design,
The illumination light of the second rectangular raster 12 can be made more uniform, can solve to reduce asking for experiment effect because illumination light is uneven
Topic.
Specific embodiment five
The present embodiment is the embodiment of contrast method for continuously adjusting.
The contrast method for continuously adjusting of the present embodiment, is rotated by motor 31, and drive link 32 is driven to rotate, and then is driven
21 rotation of swivel drives the first sinusoidal grating 11 and 12 counter motion of the second sinusoidal grating by the external part 23 on swivel 21, real
Existing contrast continuously adjusts.
Specific embodiment six
The present embodiment is the embodiment of contrast method for continuously adjusting.
The contrast method for continuously adjusting of the present embodiment, on the basis of specific embodiment five, further limit including with
Lower step：
Step a, the first sinusoidal grating 11 and the second sinusoidal grating 12 are adjusted
Two external parts 23 on two swivels 21 of same clamp mechanism make first positioned at same perpendicular
Sinusoidal grating 11 and the second sinusoidal grating 12 overlap；
Step b, according to following formula, contrast is adjusted
Wherein, k is contrast, C1For the contrast of the first sinusoidal grating 11, C2For the contrast of the second sinusoidal grating 12, l
For the wheelbase of two external parts 23 on two swivels 21 of same clamp mechanism, α is the corner of motor 31；
Specific derivation process is：
The light intensity expression of first sinusoidal grating 11 is：
The light intensity expression of second sinusoidal grating 12 is：
After motor 31 turns over the angles α, the light intensity expression of the first sinusoidal grating 11 is：
After motor 31 turns over the angles α, the light intensity expression of the second sinusoidal grating 12 is：
Normalization light intensity expression after synthesis is：
Then contrast is：
The contrast method for continuously adjusting of the present embodiment continuously adjusts grating based on contrast of the present invention, gives comparison
Correspondence between degree and 31 corner of motor has established experiment base for the concrete operations of contrast method for continuously adjusting of the present invention
Plinth.
Specific embodiment seven
The present embodiment is the embodiment of contrast method for continuously adjusting.
The contrast method for continuously adjusting of the present embodiment, on the basis of specific embodiment five, further limit including with
Lower step：
Step a, the first sinusoidal grating 11 and the second sinusoidal grating 12 are adjusted
Two external parts 23 on two swivels 21 of same clamp mechanism make first positioned at same perpendicular
Sinusoidal grating 11 and the second sinusoidal grating 12 overlap；
Step b, according to following formula, contrast is adjusted
Wherein, k is contrast, and C is the contrast of the first sinusoidal grating 11 and the second sinusoidal grating 12, and l is same handset
The wheelbase of two external parts 23 on two swivels 21 of structure, α are the corner of motor 31；
Specific derivation process is：
The light intensity expression of first sinusoidal grating 11 and the second sinusoidal grating 12 is：
After motor 31 turns over the angles α, the light intensity expression of the first sinusoidal grating 11 is：
After motor 31 turns over the angles α, the light intensity expression of the second sinusoidal grating 12 is：
Normalization light intensity expression after synthesis is：
Then contrast is：
The contrast method for continuously adjusting of the present embodiment continuously adjusts grating based on contrast of the present invention, gives comparison
Correspondence between degree and 31 corner of motor has established experiment base for the concrete operations of contrast method for continuously adjusting of the present invention
Plinth.
Claims (1)
1. contrast method for continuously adjusting,
It is peculiar to be,
It is rotated by motor (31), drive link (32) is driven to rotate, and then drive swivel (21) rotation, by stretching on swivel (21)
Outlet (23) drives the first sinusoidal grating (11) and the second sinusoidal grating (12) counter motion, realizes that contrast continuously adjusts；
Include the following steps：
Step a, the first sinusoidal grating of adjustment (11) and the second sinusoidal grating (12)
Two external parts (23) on two swivels (21) of same clamp mechanism make first positioned at same perpendicular
Sinusoidal grating (11) and the second sinusoidal grating (12) overlap；
Step b, according to following formula, contrast is adjusted
Wherein, k is contrast, and C is the contrast of the first sinusoidal grating (11) and the second sinusoidal grating (12), and l is same handset
The wheelbase of two external parts (23) on two swivels (21) of structure, α are the corner of motor (31)；
Specific derivation process is：
The light intensity expression of first sinusoidal grating (11) and the second sinusoidal grating (12) is：
After motor (31) turns over the angles α, the light intensity expression of the first sinusoidal grating (11) is：
After motor (31) turns over the angles α, the light intensity expression of the second sinusoidal grating (12) is：
Normalization light intensity expression after synthesis is：
Then contrast is：
Terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013832.5A CN108594425B (en) | 2016-07-24 | 2016-07-24 | Contrast continuous adjusting method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013832.5A CN108594425B (en) | 2016-07-24 | 2016-07-24 | Contrast continuous adjusting method |
| CN201610585597.XA CN106054372B (en) | 2016-07-24 | 2016-07-24 | A kind of contrast continuously adjusts grating and contrast method for continuously adjusting |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610585597.XA Division CN106054372B (en) | 2016-07-24 | 2016-07-24 | A kind of contrast continuously adjusts grating and contrast method for continuously adjusting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108594425A true CN108594425A (en) | 2018-09-28 |
| CN108594425B CN108594425B (en) | 2020-03-06 |
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ID=57417196
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610585597.XA Expired - Fee Related CN106054372B (en) | 2016-07-24 | 2016-07-24 | A kind of contrast continuously adjusts grating and contrast method for continuously adjusting |
| CN201810013943.6A Expired - Fee Related CN108319011B (en) | 2016-07-24 | 2016-07-24 | contrast continuous adjusting method |
| CN201810013832.5A Expired - Fee Related CN108594425B (en) | 2016-07-24 | 2016-07-24 | Contrast continuous adjusting method |
| CN201810014147.4A Expired - Fee Related CN108181721B (en) | 2016-07-24 | 2016-07-24 | Contrast continuous adjustment method of contrast continuous adjustment grating |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610585597.XA Expired - Fee Related CN106054372B (en) | 2016-07-24 | 2016-07-24 | A kind of contrast continuously adjusts grating and contrast method for continuously adjusting |
| CN201810013943.6A Expired - Fee Related CN108319011B (en) | 2016-07-24 | 2016-07-24 | contrast continuous adjusting method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810014147.4A Expired - Fee Related CN108181721B (en) | 2016-07-24 | 2016-07-24 | Contrast continuous adjustment method of contrast continuous adjustment grating |
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| CN (4) | CN106054372B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100803A (en) * | 1994-07-08 | 1995-03-29 | 天津大学 | Optical grating displacement measuring device with single harmonic output |
| US5748331A (en) * | 1995-03-04 | 1998-05-05 | Linotype-Hell Ag | Process control strip and method for recording |
| CN1888818A (en) * | 2006-05-22 | 2007-01-03 | 北京航空航天大学 | Sinusoidal fringe structural optical projector based on acousto-optic deflection device |
| JP2012115621A (en) * | 2010-12-03 | 2012-06-21 | Fujifilm Corp | Radiological image detection apparatus, radiographic apparatus and radiographic system |
| US20120163537A1 (en) * | 2010-12-27 | 2012-06-28 | Fujifilm Corporation | Radiographic image obtainment method and radiographic apparatus |
| CN103048715A (en) * | 2013-01-04 | 2013-04-17 | 南京邮电大学 | Planar sub-wavelength aperiodic high-contrast grating and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765099B (en) * | 2015-04-29 | 2018-02-02 | 北京航空航天大学 | A kind of device and method for inscribing cycle adjustable optic fibre grating |
| CN205809411U (en) * | 2016-07-24 | 2016-12-14 | 哈尔滨理工大学 | A kind of contrast continuously adjusts grating |
-
2016
- 2016-07-24 CN CN201610585597.XA patent/CN106054372B/en not_active Expired - Fee Related
- 2016-07-24 CN CN201810013943.6A patent/CN108319011B/en not_active Expired - Fee Related
- 2016-07-24 CN CN201810013832.5A patent/CN108594425B/en not_active Expired - Fee Related
- 2016-07-24 CN CN201810014147.4A patent/CN108181721B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100803A (en) * | 1994-07-08 | 1995-03-29 | 天津大学 | Optical grating displacement measuring device with single harmonic output |
| US5748331A (en) * | 1995-03-04 | 1998-05-05 | Linotype-Hell Ag | Process control strip and method for recording |
| CN1888818A (en) * | 2006-05-22 | 2007-01-03 | 北京航空航天大学 | Sinusoidal fringe structural optical projector based on acousto-optic deflection device |
| JP2012115621A (en) * | 2010-12-03 | 2012-06-21 | Fujifilm Corp | Radiological image detection apparatus, radiographic apparatus and radiographic system |
| US20120163537A1 (en) * | 2010-12-27 | 2012-06-28 | Fujifilm Corporation | Radiographic image obtainment method and radiographic apparatus |
| CN103048715A (en) * | 2013-01-04 | 2013-04-17 | 南京邮电大学 | Planar sub-wavelength aperiodic high-contrast grating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108594425B (en) | 2020-03-06 |
| CN108319011B (en) | 2020-01-31 |
| CN106054372B (en) | 2018-04-03 |
| CN108319011A (en) | 2018-07-24 |
| CN106054372A (en) | 2016-10-26 |
| CN108181721A (en) | 2018-06-19 |
| CN108181721B (en) | 2020-01-31 |
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