CN110349486A - A kind of large-scale demonstrator for light polarization phenomenon - Google Patents
A kind of large-scale demonstrator for light polarization phenomenon Download PDFInfo
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- CN110349486A CN110349486A CN201910668614.XA CN201910668614A CN110349486A CN 110349486 A CN110349486 A CN 110349486A CN 201910668614 A CN201910668614 A CN 201910668614A CN 110349486 A CN110349486 A CN 110349486A
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- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
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Abstract
The present invention proposes a kind of for light polarization phenomenon large size demonstrator comprising main body rack, discoid apparatus for demonstrating and attachment；The main body rack bottom is 4 universal wheels, and wheel is fixed on glued wood based panel；There is the pillar of a hollow rectangular shape above wood based panel, a circular groove is dug in long side side above pillar；One wooden cylindrical stent inboard outer end is respectively provided with guide rail；0-360 ° of scale, one rectangle hole of cylindrical stent right side opening are indicated on the outside of cylindrical stent, wooden cylindrical stent is lain in a horizontal plane on groove above-mentioned；Discoid apparatus for demonstrating includes annular rotary table, 2 rotatory polarization pieces；Annular rotary table side wall is equipped with four rolling, can be fixed to annular rotary table in cylindrical fixed frame, rotating device non-stop layer rotation axis, the pulley on fixed frame rotates on ring ring.Instrument size of the present invention is big, allows more people while operating, is not required to additional light source, and device is simpler, can demonstrate the polarization phenomena, chromatic polarization phenomenon and photoelastic effect of light, and demo content is abundant.
Description
Technical field
The invention belongs to technical field of optical instrument, and in particular to a kind of large-scale demonstrator for light polarization phenomenon.
Background technique
Polarization is one of fundamental characteristics of light, and the polarization characteristic of light is the key concept in middle school and college physics teaching,
For understanding that the characteristic of light has great importance.Meanwhile the polarization characteristic of light is widely used in daily life and science and technology.But
Polarization phenomena is excessively abstract due to its concept, it is more difficult to understand.So that student more depends on the understanding of the polarization characteristic of light
Classroom diagram and the imagination of itself.
Existing polarised light demonstrator is mainly to show the polarization that light source, polarizer etc. are fixed on demonstration light on guide rail
As, photoelastic effect etc..But this device is only suitable for that a small number of student viewings can only be demonstrated to or, not square in laboratory independent operation
Just it is demonstrated in classroom or in the large-scale place such as science and technology center, student or spectators are unable to depth experience polarization phenomena.Also, existing market
The features such as upper instruments used for education for polarised light demonstration are generally existing to be had a single function, instrument miniaturization, is not suitable for taking exercise learning very much
Raw research sexuality.
Therefore, the instruments used for education that a device is simple, visual phenomenon, stability are good, feature-rich are researched and developed to be conducive to excite
Students ' interest of study expands the thinking that student learns optics, deepens understanding of the student for the polarization phenomena of light.
Summary of the invention
In order to solve technical problem in the prior art, the present invention provides a kind of large size demonstration for light polarization phenomenon
Instrument, for the polarization characteristic of light and the multi-functional large-scale polarization of relevant knowledge can be demonstrated in the places such as classroom and science and technology center
Light demonstrator, using the large-scale demonstrator for light polarization phenomenon of the invention, can demonstrating the polarization phenomena of light, (Malus is fixed
Rule), photoelastic effect, chromatic polarization phenomenon.
Technical solution according to the present invention proposes a kind of for light polarization phenomenon large size demonstrator comprising main body rack,
Discoid apparatus for demonstrating and attachment；The main body rack bottom is 4 universal wheels, and wheel is fixed on glued wood based panel
On；There is the pillar of a hollow rectangular shape above wood based panel, a circular groove is dug in long side side above pillar；One wooden cylinder
Shape bracket inboard outer end is respectively provided with guide rail；0-360 ° of scale is indicated on the outside of cylindrical stent, cylindrical stent right side opening one is long
Square orifice, wooden cylindrical stent are lain in a horizontal plane on groove above-mentioned；Discoid apparatus for demonstrating includes annular rotary table, 2
Rotatory polarization piece；Annular rotary table side wall is equipped with four rolling, can be fixed to annular rotary table in cylindrical fixed frame, rotating device
Non-stop layer rotation axis, the pulley on fixed frame rotate on ring ring.
It is freewheel that 4 universal wheels, which include 2, and 2 are band lockwheel.Hand is freely rotated equipped with one in annular rotary table
Handle；Turntable can be made to be freely rotated in fixed frame by swing handle.The axle center of 2 polarizing films is coaxial, and keeps certain
Spacing.Attachment includes the butterfly-like birefringent material of a glass substrate being made of copolyimide, the thickness of butterfly different parts
Spend different, butterfly is attached on transparency glass plate into Transparent color；Or attachment includes a symmetrical concave structure opposite sex asphalt mixtures modified by epoxy resin
Rouge piece.The wood based panel is glued wood based panel；Or cylindrical stent inboard outer end is respectively provided with guide rail；Or it is described
Cylindrical stent side indicates 0-360 ° of scale；Or one rectangle hole of cylindrical stent right side opening.
Further, 2 circularly polarizing plates are by polyvinyl alcohol (PVA) stretched film and cellulose acetate film
(TAC) it is made through multiple compound, stretching, coating process；Or 2 rotatory polarization pieces are respectively as the polarizer and analyzing
Device.
Further, in being used for light polarization phenomenon large size demonstrator, 1 meter of annular rotary table diameter, ring width 5cm, annular
Turntable side wall is equipped with four rolling；0-360 ° of scale is indicated on the outside of annular rotary table, and has one handle is freely rotated；2 rotatory polarizations
Piece is separately fixed on 2 annular rotary tables with screw；Annular rotary table is fixed in cylindrical fixed frame, is made by swing handle
Turntable is freely rotated in fixed frame；A rectangle hole is opened in cylindrical fixed frame side, having a size of 0.7 meter × 0.4 meter；It is butterfly-like
Birefringent material is made of copolyimide, and the thickness of butterfly different parts is different；Butterfly is attached on transparency glass plate, glass
Glass thickness 2mm, having a size of 0.6 meter × 0.6 meter, pattern is at Transparent color；Anisotropic epoxy sheet with a thickness of 3mm, it is 0.6 meter a length of,
Width is 0.3 meter, is symmetrical concave structure, anisotropic epoxy sheet can deformation occurs.
Preferably, 2 polarizing films for light polarization phenomenon large size demonstrator are screwed in annular rotary table respectively,
1 meter of annular rotary table diameter, ring width 5cm, annular rotary table side wall is equipped with four rolling.Annular rotary table can be fixed to cylindrical fixed
In frame, turntable can be made to be freely rotated in fixed frame by swing handle.
Size due to the present invention for the large-scale demonstrator of light polarization phenomenon is very big, can permit more people simultaneously
Operation, increases the interactivity and playability of instrument, can the large-scale place such as classroom's environment or exhibition center, science and technology center into
Row is shown.Meanwhile the present invention can be not required to additional light source, by natural light (sunlight), device is simpler.Always
It, the present invention can demonstrate a variety of optical phenomenas, and demo content is abundant, interactive strong.There is preferable religion as instruments used for education
Effect is learned, there is stronger science popularization as scientific popular instrument device.
Detailed description of the invention
Fig. 1 is agent structure schematic diagram of the invention.
Fig. 2 is anisotropic epoxy sheet structural schematic diagram used in the present invention.
Fig. 3 is butterfly-like birefringent material structural schematic diagram used in the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.Additionally, protection scope of the present invention should not only be limited to following specific knots
Structure or component or design parameter.
The present invention devises a kind of large-scale demonstrator for light polarization phenomenon, it includes main body rack, discoid drills
Showing device and attachment three parts.Large-scale demonstrator size of the present invention for light polarization phenomenon is big, allows more people while operating,
It is not required to additional light source, device is simpler, can demonstrate the polarization phenomena, chromatic polarization phenomenon and photoelastic effect of light, demonstrates
It is abundant in content.The present invention has stronger interactive, interest and operability, is suitble in classroom's environment or exhibition
The large size place such as shop, science and technology center is shown.It is intuitive to understand polarization knowledge relevant to life and science and technology by undergoing,
With preferable teaching efficiency and social benefit.
Large-scale demonstrator for light polarization phenomenon of the invention includes main body rack, discoid apparatus for demonstrating and attached
Part.Main body rack bottom is 4 universal wheels, and two of them are freewheel, and 2 are locking wheel, and wheel is fixed on gluing
On wood based panel, wood based panel is having a size of 60cm × 80cm × 5cm；There are the pillar of a hollow rectangular shape, size above wood based panel
For 40cm × 20cm × 80cm (plank thickness 1cm), a circular groove is dug in pillar top long side side (40cm × 80cm), and groove is bent
Rate is 50cm.One wooden cylindrical stent, long 40cm, thickness 5cm, outer diameter 110cm, bracket inboard outer end is respectively provided with guide rail.Circle
Indicate 0-360 ° of scale on the outside of cylindrical stent, one rectangle hole of cylindrical stent right side opening, having a size of 0.7m × 0.4m, wooden circle
Cylindrical stent is lain in a horizontal plane on groove above-mentioned.Discoid apparatus for demonstrating include 1 annular rotary table, 1 meter of diameter, ring width 5cm,
2 rotatory polarization pieces are separately fixed on 2 annular rotary tables with screw；Annular rotary table side wall is equipped with four rolling, can will be annular
Turntable is fixed in cylindrical fixed frame, rotating device non-stop layer rotation axis, and the pulley on fixed frame turns on ring ring
It is dynamic.Handle is freely rotated equipped with one in annular rotary table；Turntable can be made to be freely rotated in fixed frame by swing handle.Further
The axle center on ground, 2 polarizing films is coaxial, and keeps a fixed spacing.
Wherein, 2 large-scale rotatory polarization piece is by polyvinyl alcohol (PVA) stretched film and cellulose acetate film (TAC) through multiple
The techniques such as compound, stretching, coating are made, size: 1 meter of diameter, thickness: 2mm.Respectively as the polarizer and analyzer.Attachment packet
The butterfly-like birefringent material of a glass substrate is included, is made of copolyimide, the thickness of butterfly different parts is different；Butterfly
It is attached on transparency glass plate, thickness of glass 2mm, having a size of 0.6 meter × 0.6 meter, pattern is at Transparent color；Including an anisotropic asphalt mixtures modified by epoxy resin
Rouge piece is 0.3 meter with a thickness of 3mm, 0.6 meter a length of, width, is symmetrical concave structure, and shape can occur for anisotropic epoxy sheet
Become.Further, common plastics set square, knife and fork, protractor etc. can also be used as attachment for observation experiment in life
Phenomenon.
It is described in detail with reference to the accompanying drawing, Fig. 1 is agent structure schematic diagram of the invention.Fig. 2 is made by the present invention
Anisotropic epoxy sheet structural schematic diagram.Fig. 3 is butterfly-like birefringent material structural schematic diagram used in the present invention.
Attached drawing mark is specific as follows: mark 101 is universal wheel, and mark 102 is on bottom gluing wood based panel, and mark 103 is
The pillar of hollow rectangular shape, mark 104 are cylindrical stent, and mark 105 is dial, and mark 106 is polarizing film, mark
107 be ring ring, and mark 108 is handle.Mark 301 is the glass plate of bottom, and mark 302-305 is of different shapes two-fold
Penetrate film.Mark 302 is the film of the bottom, and mark 303 is marked to be superimposed thin film on the basis of marking 302 film
Note 304 is to be superimposed thin film again on the basis of marking 303 film, and mark 305 is to be superimposed on the basis of marking 302 film
Three-layer thin-film.
As shown in Figure 1-3, a kind of large-scale demonstrator for light polarization phenomenon proposed is mainly by main body rack, discoid
Apparatus for demonstrating and attachment composition.Main body rack by 4 universal wheels of band rectangular seat (size: 60cm × 80cm ×
10cm) (size: grown with the pillar of 1 concave rectangular shape (size: 40cm × 20cm × 80cm) and cylindrical fixed frame
40cm, thick 5cm, outer diameter 110cm) composition.For gluing wood based materials.Three parts are assemblied together by fixed screw.It is cylindrical
There are concave track in fixed frame two sides.Discoid apparatus for demonstrating includes circular polarizing plate (2), annular rotary table (2), 2 circles
Polaroid is respectively as the polarizer and analyzer.2 circularly polarizing plate diameters are 1 meter, be by polyvinyl alcohol (PVA) stretched film and
Cellulose acetate film (TAC) is through a kind of composite material made of the repeatedly techniques such as compound, stretching, coating, in larger size range
Interior extinction ratio with higher and uniformity.1 meter of annular rotary table diameter, ring width 5cm, annular rotary table side wall is equipped with four rolling.
0-360 ° of scale is indicated on the outside of turntable, and has one handle is freely rotated.2 rotatory polarization pieces are separately fixed at 2 rings with screw
On shape turntable.Turntable is fixed in cylindrical fixed frame, turntable can be made to be freely rotated in fixed frame by swing handle.
A rectangle hole is opened in cylindrical fixed frame side, having a size of 0.7 meter × 0.4 meter, so as to toward other members are added between two polarizing films
Part.Attachment includes a butterfly-like birefringent material, is made of copolyimide, the thickness of butterfly different parts is different.Butterfly
Butterfly is attached on transparency glass plate, thickness of glass 2mm, and having a size of 0.6 meter × 0.6 meter, pattern is at Transparent color；An and anisotropic epoxy
Resin sheet is with a thickness of 3mm, and a length of 0.6 meter, width is 0.3 meter, is symmetrical concave structure, can bring it about deformation with hand.On
Three brackets stated are assemblied together by fixed screw.
When using the large-scale demonstrator for light polarization phenomenon of the invention, when demonstrating the polarization phenomena of light, fix wherein
One turntable, rotates another turntable, it can be seen that the light and shade of light transmission changes, and light and shade period of change is 180 °.In addition, another
Side can also rotate, phenomenon having the same.
When using the large-scale demonstrator for light polarization phenomenon of the invention, the material with birefringent characteristic is put into two
Between vertical polarizing film, since linearly polarized light can be resolved into ordinary light (o light) and non-by birefringent material (anisotropy)
Ordinary light (e light).Spread speed is different in the material for o light and e light, certain phase difference is generated when being emitted from material, through analyzing
It is interfered after device.Since incident light (natural light) includes the light of different wave length, different light will not meet interference condition simultaneously,
The light of certain wavelength becomes dark fringe, and the light of certain wavelength becomes bright fringes, and result is exactly that colour is presented in interference fringe.This is existing
Chromatic polarization phenomenon as being birefringent material.
When using the large-scale demonstrator for light polarization phenomenon of the invention, special-shaped epoxy sheet is protruded into and is put into two and hangs down
Between straight polarizing film, it can be seen that Transparent color is presented in epoxy resin.If pinching special-shaped epoxy sheet handle, special-shaped ring with hand
Oxygen resin sheet becomes colored.Moreover, different location striped color is different.Since epoxy resin becomes when by uneven external force
Anisotropy, therefore there is birefringent property, color fringe can be observed under this arrangement.In the bigger place of stress,
Birefringent phenomenon is more obvious, therefore the striped generated is more intensive.This phenomenon is the photoelastic effect of amorphous material.In addition, also
Plastics set square common in life, knife and fork, protractor etc. can be put between two polarizing films, pass through one polarization of rotation
Piece, it has also been observed that the continually changing pattern of color.
Further, the present invention is mainly by instrument support, circular polarizing plate (2), annular rotary table (2), special-shaped ring
Oxygen resin sheet, five part of butterfly-like birefringent material are constituted.Polaroid used in the present invention is to stretch polyvinyl alcohol (PVA)
Film and cellulose acetate film (TAC) are with higher through a kind of composite material made of the repeatedly techniques such as compound, stretching, coating
Extinction ratio, and size can be made big.Polaroid is cut into circle, and diameter is 1 meter.Large size for light polarization phenomenon
The specific size of demonstrator are as follows: 1 meter of polarizing film diameter, 1 meter of ring ring diameter, 0.2 meter of ring width, 1.2 meters of dial diameters, carve
0.2 meter of scale width, 1 meter × 0.5 meter × 0.1 meter of circle ring rack pedestal, 0.6 meter of circle ring rack column size × 0.6 meter × 0.2
Rice.
Specific embodiment 1: the polarization phenomena of demonstration light.Use 101-108 subelement shown in FIG. 1.Polarizing film
The direction of polarization direction handle (mark 104) along Fig. 1.
Step 1: there are two classmates at station to the large-scale demonstrator two sides for light polarization phenomenon respectively, adjusts two polarizing films
Polarization direction is parallel.
Step 2: first place classmate at the uniform velocity rotatory polarization piece, and observe opposite classmate.The rotation angle of polarizing film becomes from 0 °
Change to 360 °.It can be seen that first place classmate in non-rotatory polarization piece, is clear that opposite classmate.When being rotated by 90 °
When, it can't see opposite classmate completely, when rotation is to 180 °, opposite classmate can be clearly apparent again.Pass through rotatory polarization
Piece direction observed light and shade mechanical periodicity, and period of change is 180 °.In the process, the polarizing film of second place classmate side is made
For the polarizer, natural light is become into linearly polarized light, the polarizing film of first place classmate side changes the strong of projection light as analyzer
The polarization characteristic of degree and detection incident light.
Step 3: first place classmate remains stationary, second place classmate's rotatory polarization piece, it can also be seen that similar phenomenon.
At this point, the polarizing film of first place classmate side is as the polarizer, the polarizing film of second place classmate side is as analyzer.
Specific embodiment 2: demonstration chromatic polarization phenomenon.Butterfly-like birefringent material is birefringent thin by copolyimide
Film preparation, and (Fig. 3 mark 301) is placed on transparent glass, thickness of glass 2mm, having a size of 0.6 meter × 0.6 meter, pattern is at saturating
Light colour, single layer copolyimide film thickness are 0.1 millimeter.As shown in figure 3, different filling patterns indicate different thickness.
Marking 302-304 is respectively single thin film, is sequentially overlapped, and butterfly's wing is formed.Mark 305 is three-layer thin-film shape, forms butterfly
Butterfly body and head.Profile, glasses and the feeler of butterfly are drawn with water-color paintbrush.
Step 1: standing two classmates respectively in the large-scale demonstrator two sides for light polarization phenomenon, and two polarizing films are polarized
Direction is tuned into parallel.
Step 2: third classmate holds butterfly and puts it among two polarizing films, in the large size for light polarization phenomenon
The classmate of demonstrator two sides observes butterfly, it can be seen that Transparent color is presented in butterfly.
Step 3: wherein a classmate slowly rotates 90 ° of one of polarizing film, and two polarizing film polarization directions are hung down at this time
Directly, it can be seen that in rotary course, colour is gradually presented in butterfly's wing.Since the thickness of butterfly different location material is different
Sample, therefore, the birefringent phenomenon of generation are different, and different location is caused to have different colors.This phenomenon is birefringent material
Chromatic polarization phenomenon.The description of test, it is mutual with certain thickness birefringent material and direction for generating the condition of chromatic polarization
Two vertical polarizing films.
Specific embodiment 3: demonstration photoelastic effect.
Step 1: standing two classmates respectively in the large-scale demonstrator two sides for light polarization phenomenon, and two polarizing films are polarized
Direction is tuned into parallel.
Step 2: the hand-held special-shaped epoxy sheet of third classmate protrudes into the side rectangle hole of circle ring rack.It can be with
See that Transparent color is presented in epoxy resin.
Step 3: wherein a classmate slowly rotates 90 ° of one of polarizing film, and two polarizing film polarization directions are hung down at this time
Directly, it can be seen that in rotary course, epoxy resin color does not change, and since two polarizing film polarization directions are hung down
Directly, polarizing film two sides classmate does not see any phenomenon.
Step 4: third classmate pinches special-shaped epoxy sheet handle with hand, and two sides classmate observes color fringe.And
And different location striped color is different.Since epoxy resin becomes anisotropy when by uneven external force, have double
The property of refraction can observe color fringe under this arrangement.In the bigger place of stress, birefringent phenomenon is more obvious, because
The striped that this is generated is more intensive.
Step 5: two polarizing film polarization directions are tuned into flat by the classmate of the large-scale demonstrator two sides for light polarization phenomenon
Row, color fringe disappears at this time.
Step 6: plastics set square common in life, knife and fork, protractor etc. can also be put into two polarizing films by experimenter
Between, repeat the above steps one~five.Since these plastics have certain photoelastic effect, in forming, different location can be deposited
It in stress, and can be retained, by rotating a polarizing film, it has also been observed that the continually changing pattern of color.Into
One step increases the playability and participatory of the large-scale demonstrator for light polarization phenomenon.
The present invention can allow more people to participate in demonstrating experiment related with the polarization of light simultaneously, have stronger interactivity,
Interest, and the present invention does not need additional power supply, light source, and instrument is simple, and demo content is abundant, and student will be greatly improved
The enthusiasm of habit.Meanwhile as a kind of science popularization instrument, understanding of the citizen for science and technology is greatly improved.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Those skilled in the art is appreciated that without departing substantially from appended claims
In the case where the spirit and scope of the present invention of definition, various modifications can be made in form and detail.
Claims (9)
1. one kind is used for light polarization phenomenon large size demonstrator, which is characterized in that it includes main body rack, discoid apparatus for demonstrating
And attachment；The main body rack bottom is 4 universal wheels, and wheel is fixed on glued wood based panel；Have one above wood based panel
A circular groove is dug in the pillar of hollow rectangular shape, pillar top long side side；One wooden cylindrical stent inboard outer end point
It Zhuan You not guide rail；0-360 ° of scale, one rectangle hole of cylindrical stent right side opening, wooden cylinder are indicated on the outside of cylindrical stent
Support level is placed on groove above-mentioned；Discoid apparatus for demonstrating includes annular rotary table, 2 rotatory polarization pieces；Annular rotary table
Side wall is equipped with four rolling, can be fixed to annular rotary table in cylindrical fixed frame, rotating device non-stop layer rotation axis, by solid
The pulley determined on frame rotates on ring ring.
2. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that 4 universal wheels,
Wherein 2 are freewheel, and 2 are band lockwheel.
3. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that annular rotary table is equipped with one certainly
By rotational handle；Turntable can be made to be freely rotated in fixed frame by swing handle.
4. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that the axle center of 2 polarizing films
Coaxially, and a fixed spacing is kept.
5. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that attachment includes poly- by being copolymerized
The butterfly-like birefringent material of a glass substrate that acid imide is constituted, the thickness of butterfly different parts is different, and butterfly is attached to transparent
At Transparent color on glass plate；Or attachment includes a symmetrical concave structure opposite sex epoxy sheet.
6. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that the wood based panel is glue
Close wood based panel；Or cylindrical stent inboard outer end is respectively provided with guide rail；Or the cylindrical stent side indicates 0-
360 ° of scales；Or one rectangle hole of cylindrical stent right side opening.
7. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that 2 circles are inclined
Vibration piece is made of polyvinyl alcohol (PVA) stretched film and cellulose acetate film (TAC) through multiple compound, stretching, coating process；Or
2 rotatory polarization pieces are respectively as the polarizer and analyzer described in person.
8. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that 1 meter of annular rotary table diameter,
Ring width 5cm, annular rotary table side wall are equipped with four rolling；0-360 ° of scale is indicated on the outside of annular rotary table, and has one hand is freely rotated
Handle；2 rotatory polarization pieces are separately fixed on 2 annular rotary tables with screw；Annular rotary table is fixed in cylindrical fixed frame, is led to
Crossing swing handle is freely rotated turntable in fixed frame；A rectangle hole is opened in cylindrical fixed frame side, having a size of 0.7 meter ×
0.4 meter；Butterfly-like birefringent material is made of copolyimide, and the thickness of butterfly different parts is different；Butterfly is attached to
On bright glass plate, thickness of glass 2mm, having a size of 0.6 meter × 0.6 meter, pattern is at Transparent color；Anisotropic epoxy sheet with a thickness of
3mm, 0.6 meter a length of, width are 0.3 meter, are symmetrical concave structure, anisotropic epoxy sheet can deformation occurs.
9. according to claim 1 be used for light polarization phenomenon large size demonstrator, which is characterized in that 2 polarizing films are used respectively
Screw is fixed on annular rotary table, and 1 meter of annular rotary table diameter, ring width 5cm, annular rotary table side wall is equipped with four rolling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678867A (en) * | 2020-06-17 | 2020-09-18 | 中国科学院烟台海岸带研究所 | Method and device for quantitatively measuring water body bias light reflectance in RGB three-band |
| TWI819828B (en) * | 2022-09-30 | 2023-10-21 | 國立中央大學 | Optical polarization effect demonstrating device |
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