CN100485739C - Polarization demo instrument through bicolor laser - Google Patents
Polarization demo instrument through bicolor laser Download PDFInfo
- Publication number
- CN100485739C CN100485739C CNB2005100951506A CN200510095150A CN100485739C CN 100485739 C CN100485739 C CN 100485739C CN B2005100951506 A CNB2005100951506 A CN B2005100951506A CN 200510095150 A CN200510095150 A CN 200510095150A CN 100485739 C CN100485739 C CN 100485739C
- Authority
- CN
- China
- Prior art keywords
- turntable
- polarization
- demo
- catoptron
- transparent dielectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000010287 polarization Effects 0.000 title claims description 37
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 4
- 230000011514 reflex Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 241000220225 Malus Species 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
Abstract
The demo instrument includes two color lasers, polarizing films, reflectors, beam splitters, rotatable table, crank handle, viewing unit and transparent medium sheet. Light beam is always propagation in same horizontal plane. Optical surfaces of each polarizing film, reflector, beam splitter, transparent medium sheet are perpendicular to the horizontal plane. Through different polarizing films, two laser beams set up polarized states of each component of light beam to be incident to transparent medium sheet to raise demo effects. Two color lasers are adopted in order to convert change between dark and light to color change. Crank handle drives the rotatable table to change incident angle so as to add demo content. Being setup at the rotatable table, the reflector is parallel to the transparent medium sheet. The reflector and a convex constitute a viewing unit, which keeps reflected and transmissive optical spots still while table is rotated so as to view the demo conveniently.
Description
One, technical field
This patent relates to employed light polarization simulation demonstrating apparatus in a kind of teaching, a kind of specifically polarization demo instrument through bicolor laser.
Two, background technology
Polarization phenomena is one of most important character of light.Basic light polarization character comprises the Malus law, the Fresnel formula, and by its Brewster law of deriving.The Malus law has been described the relation of polarized light light distribution on each polarization direction.The Fresnel formula has been described the relation that light changes with incident angle through the reflected light and the transmitted light polarization state of transparent medium, and the Brewster law has particularly pointed out that reflected light is the linearly polarized light of polarization direction perpendicular to the plane of incidence under the polarizing incident angle.Significantly embody because polarization is one of light beats, also, in teaching, occupy important status, therefore often need the above-mentioned basic polarization properties of ocular demonstration by one of character of widespread use.But, directly some basic polarization properties are demonstrated for a long time, than difficulty owing to himself characteristic.The experiment about polarization is the earliest finished by Malus (1808): the device major part is two parallel plane mirrors, and demonstration, is axially rotated the another side level crossing and made output intensity change with the proof polarization properties with 57 ° of plane of incidence mirrors with Ray Of Light.The embodiment that this mode is comparatively single light have the character of polarization, do not reflect of the variation of reflected light polarization state with incident angle, the character of transmitted light etc., the variation of the pure light and shade of light intensity simultaneously is more single, and the outgoing luminous point is run with axial rotation and is unfavorable for demonstration.Another kind of common methods is the polaroid formation of light beam directive by the control of micro-control motor, accepts light intensity signal by CCD and draw each polarization direction light distribution by computing machine in the process that changes each polaroid axis of homology.The shortcoming of this mode is the equipment cost height, uses inconvenience, and phenomenon is not directly perceived lively, is not suitable as teaching or science popularization demonstration.
Three, summary of the invention
1, goal of the invention: it is intuitively lively that the purpose of this patent provides a kind of phenomenon, easy to use, with low cost, the polarization fundamental property demonstrator that observing effect is good.
2, technical scheme: (for sake of convenience, below all parts are indicated with label, but label is unintelligible is any qualification to protection domain) polarization demo instrument through bicolor laser of the present invention, it is characterized in that it comprises laser generator (1,2), first catoptron (3), beam splitter (4), transparent dielectric slab (5), second catoptron (6), turntable (7) and the film viewing screen (8) of two different colours; First catoptron (3) will emit from laser generator (1) and the laser beam behind polaroid (9) reflexes to vertical direction, that beam splitter (4) will be emitted by laser generator (1) respectively and be collected on the same direction through laser beam and laser beam that emit from laser generator (2) and behind polaroid (10) that first catoptron (3) reflects back, and with this directive transparent dielectric slab (5), transparent dielectric slab (5) is vertically mounted on the turntable face of turntable (7), on the turntable face of turntable (7), be vertically installed with second catoptron (6) parallel simultaneously with transparent dielectric slab (5), penetrate a laser beam part of coming to transparent dielectric slab (5) and see through transparent dielectric slab (5) directive film viewing screen (8), another part reflexes to second catoptron (6), at directive film viewing screen (8) after second catoptron (6) reflection.
Described polaroid (9,10) is rotatable, and the polaroid on same light path is a slice or two, and indicates angle value, can read the deflection of the axis of homology by the fixedly scale mark on panel.
The intersection of the reflecting surface of described transparent dielectric slab (5) and turntable (7) is on a diameter of turntable, and promptly dieelctric sheet (5) is placed on the turntable (7), and the osculatory of itself and turntable (7) is by the center of turntable.The reflecting surface of transparent dielectric slab (5) is vertical with surface level, the turntable face edge of turntable (7) is carved with angle value, vertical with incident ray when angle is shown as zero degree, the length of second catoptron (6) can not be blocked when not only having guaranteed the incident of light low-angle but also the reflected light mirror reflection that still can be reflected when guaranteeing wide-angle incident.
The turntable face of described turntable (7) is provided with the slot that is used to place transparent dielectric slab (5).Transparent dielectric slab (5) can insert in this slot, and transparent dielectric slab (5) is simple glass sheet, organic glass sheet or glass stack sheet.
Be provided with the wind (11) that the traction turntable rotates in turntable (7) one sides.Turntable (7) can rotate around the table top center of circle under the traction of wind,
Described film viewing screen (8) is half transparent optical screen, is provided with view window at the reflection light point and the transmission luminous point place that estimate.On the catoptrical light path of catoptron (6), be mounted with the short focal length convex lens (12) of heavy caliber.Be used for and be convenient to demonstration and observe through the convergence of rays of transparent medium and mirror reflects in fixing observation point.
The principle of work of this patent: the two-beam line takes place respectively in the laser instrument of two kinds of colors, on light path separately, pass through manual rotatory polarization sheet, with reference to the angle scale value polarization state is set respectively, the light that utilizes catoptron and beam splitter originally to propagate on two different paths subsequently collects on the paths, and incident transparent dielectric slab thus, pass through revolving-turret, continuously change angle of incidence values, reflection ray reflection light point observation place that directive is estimated after mirror reflects and convex lens refraction this moment, transmitted ray does not have change in location and transmission luminous point observation place of directive expectation substantially in this process.Promptly can observe reflection light point and transmission luminous point in the corresponding position of film viewing screen and the color that the rotation with turntable produces and the variation of light and shade are set with each polaroid axis of homology drift angle.
3, beneficial effect: this patent has the following advantages: (1) adopts beam splitter etc. to handle light path, makes that polarization state and other optical properties of each composition can be provided with respectively in the incident light, thereby simulation is respectively tested the situation of law and produced corresponding demonstration effect.(2) adopt two bundle different colours laser instruments, simple light and shade is changed being converted into change color, make that the demonstration result is vividly obvious, improved effect as teaching demonstration and science popularization demonstration.(3) use catoptron and the fixing convex lens be fixed in turntable, make reflection light point can be fixed in the estimating position on the film viewing screen, can not move, make and observe conveniently, strengthened the demonstration effect because of the rotation of turntable face etc.(4) demonstration of the integrated a plurality of basic polarization properties of device, volume is small and exquisite, light, and is with low cost, is fit in a large number as instruments used for education or carries out activity to popularize scientific knowledge.
Four, description of drawings
Accompanying drawing is the planar structure synoptic diagram of this patent.
Five, embodiment
As shown in the figure, the described polarization demo instrument through bicolor laser of this patent, it comprises red laser generator 1, green laser generator 2, the first catoptrons 3, beam splitter 4, transparent dielectric slab 5, the second catoptrons 6, turntable 7, film viewing screen 8, polaroid 9,10, wind 11, convex lens 12.Open red laser 1 and green laser 2, rotatory polarization sheet 9,10 is to be provided with the polarization state of two-beam, this light path has been provided with independently the optical property that is about to two compositions in incident transparent dielectric slab 5 light, helps being provided with respectively to reach the effect of demonstration Malus law, Fresnel formula and Brewster law.Behind first catoptron 3 and beam splitter 4, two bundle laser converge and form a light beam.Wind 11 is connected to turntable 7, is used to continuously change the incident angle of light directive transparent dielectric slab 5.Turntable 7 is provided with the transparent medium slot and second catoptron 6, a kind of transparent dielectric slab in annex simple glass sheet, organic glass sheet or the glass stack sheet is placed in the slot rotate with turntable.The reflecting surface of transparent dielectric slab 5 is on a diameter of turntable 7.Second catoptron 6 is parallel with the reflecting surface of transparent dielectric slab 5, and its length needs to require and the plant bulk setting according to the anglec of rotation with distance, suitably adjusts back and convex lens 12 and film viewing screen 8 composition finders.Such structure makes reflection light point and transmission luminous point not to move with the rotation of turntable, thereby is fixed on the relevant position of film viewing screen 8, is convenient to demonstration and observes.By rotatory polarization sheet 9,10 and rotation wind 11 driving turntable 7 changing incident angle, thereby arrive the purpose of the basic polarization properties of lively ocular demonstration light.
Claims (9)
1, a kind of polarization demo instrument through bicolor laser is characterized in that it comprises laser generator (1,2), first catoptron (3), beam splitter (4), transparent dielectric slab (5), second catoptron (6), turntable (7) and the film viewing screen (8) of two different colours; First catoptron (3) will emit from laser generator (1) and the laser beam behind polaroid (9) reflexes to vertical direction, that beam splitter (4) will be emitted by laser generator (1) respectively and be collected on the same direction through laser beam and laser beam that emit from laser generator (2) and behind polaroid (10) that first catoptron (3) reflects back, and with this directive transparent dielectric slab (5), transparent dielectric slab (5) is vertically mounted on the turntable face of turntable (7), on the turntable face of turntable (7), be vertically installed with second catoptron (6) parallel simultaneously with transparent dielectric slab (5), penetrate a laser beam part of coming to transparent dielectric slab (5) and see through transparent dielectric slab (5) directive film viewing screen (8), another part reflexes to second catoptron (6), at directive film viewing screen (8) after second catoptron (6) reflection.
2, polarization demo instrument through bicolor laser according to claim 1 is characterized in that described polaroid (9,10) for rotatable, and the polaroid on same light path is a slice or two.
3, polarization demo instrument through bicolor laser according to claim 1 is characterized in that the center of the osculatory of described transparent dielectric slab (5) and turntable (7) by turntable.
4,, it is characterized in that being carved with angle value at the turntable face edge of described turntable (7) according to claim 1 or 3 described polarization demo instrument through bicolor laser.
5, polarization demo instrument through bicolor laser according to claim 1 is characterized in that being provided with the slot that is used to place transparent dielectric slab (5) on the turntable face of described turntable (7).
6, polarization demo instrument through bicolor laser according to claim 1 is characterized in that being provided with the wind (11) that the traction turntable rotates in described turntable (7) one sides.
7, polarization demo instrument through bicolor laser according to claim 1 is characterized in that described transparent dielectric slab (5) is simple glass sheet, organic glass sheet or glass stack sheet.
8, polarization demo instrument through bicolor laser according to claim 1 is characterized in that described film viewing screen (8) is half transparent optical screen, is provided with view window at the reflection light point and the transmission luminous point place that estimate.
9, polarization demo instrument through bicolor laser according to claim 1 is characterized in that being mounted with the short focal length convex lens (12) of heavy caliber on the catoptrical light path of second catoptron (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100951506A CN100485739C (en) | 2005-11-01 | 2005-11-01 | Polarization demo instrument through bicolor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100951506A CN100485739C (en) | 2005-11-01 | 2005-11-01 | Polarization demo instrument through bicolor laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1760933A CN1760933A (en) | 2006-04-19 |
| CN100485739C true CN100485739C (en) | 2009-05-06 |
Family
ID=36706992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100951506A Expired - Fee Related CN100485739C (en) | 2005-11-01 | 2005-11-01 | Polarization demo instrument through bicolor laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100485739C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957430A (en) * | 2016-07-02 | 2016-09-21 | 北京工业大学 | Bicolor linearly-polarized light Brewster's law demonstration instrument |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2416556Y (en) * | 2000-04-06 | 2001-01-24 | 贺宁 | Comprehensive demonstration instrument for light propagating |
| CN1285663A (en) * | 2000-09-22 | 2001-02-28 | 中国科学院上海光学精密机械研究所 | Multi-beam wave-synthesis ware-partitioning apparatus for cladded pumping optical fiber amplifier and laser |
-
2005
- 2005-11-01 CN CNB2005100951506A patent/CN100485739C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2416556Y (en) * | 2000-04-06 | 2001-01-24 | 贺宁 | Comprehensive demonstration instrument for light propagating |
| CN1285663A (en) * | 2000-09-22 | 2001-02-28 | 中国科学院上海光学精密机械研究所 | Multi-beam wave-synthesis ware-partitioning apparatus for cladded pumping optical fiber amplifier and laser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1760933A (en) | 2006-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1274257B1 (en) | Polarised light recuperation method and apparatus | |
| CN1332235C (en) | Polarized light source system with dual optical paths | |
| CN100474006C (en) | Mirror with built-in display | |
| US20220308343A1 (en) | Near-to-eye display device and augmented reality apparatus | |
| JP5210395B2 (en) | Light modulator for optical image projection | |
| CN110161697B (en) | Near-eye display device and near-eye display method | |
| KR970703681A (en) | HIGH RESOLUTION SUBTRACTIVE COLOR PROJECTION SYSTEM | |
| CN103487983A (en) | Array substrate, display panel and display device thereof | |
| JPH03505013A (en) | Liquid crystal device using primary electro-optic effect | |
| CN106842605A (en) | Light-dividing device based on polarization spectroscope | |
| US11650151B2 (en) | Compact, self-aligned projection focusing schlieren method and system | |
| CN206671690U (en) | Light-dividing device based on polarization spectroscope | |
| CN106918921A (en) | A kind of laser display based on fly's-eye lens is polarized shimming apparatus for shaping | |
| CN108333781A (en) | Near-eye display system | |
| TWI518416B (en) | Backlight module and transparent liquid crystal display devise comprising the same | |
| CN100485739C (en) | Polarization demo instrument through bicolor laser | |
| CN209400831U (en) | A kind of display panel and display device | |
| CN108803032B (en) | Reflective augmented reality display system and equipment | |
| TWI619996B (en) | Near-Eye Display Device | |
| KR20100002085A (en) | Compact virtual display | |
| CN106290167B (en) | The parallel scan device of acousto-optic deflection device and resonance scanner | |
| CN202133823U (en) | Dynamic large field small distortion star simulator optical system | |
| CN105911715A (en) | Polarization light splitting device with high extinction ratio | |
| CN211699431U (en) | Spectrometer for observing by digital camera | |
| TW201504727A (en) | Backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20091201 |