CN201054205Y - Refection law demonstrator - Google Patents
Refection law demonstrator Download PDFInfo
- Publication number
- CN201054205Y CN201054205Y CNU2006201589194U CN200620158919U CN201054205Y CN 201054205 Y CN201054205 Y CN 201054205Y CN U2006201589194 U CNU2006201589194 U CN U2006201589194U CN 200620158919 U CN200620158919 U CN 200620158919U CN 201054205 Y CN201054205 Y CN 201054205Y
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- CN
- China
- Prior art keywords
- optical screen
- demonstration device
- reflection
- laser gun
- reflection law
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Abstract
The utility model relates to a reflection law demonstrator, which comprises a bottom seat, a small flat mirror, a light screen, a laser gun supporting bracket, a laser gun, and a laser gun rotating shaft which are connected in sequence. The utility model is characterized in that the laser beam emitted by the laser gun passes through the incident gaping of the light screen and illuminates onto the small flat mirror, the reflected ray is projected on the scale line of the light screen, the scale reading is reflection angle, and an incident angle is read through an incident angle positioning gaping. The reflection law and the refraction law of the light can be demonstrated clearly by the utility model to lead the students to visually study the reversion law and the refraction law of the light.
Description
Affiliated technical field
The utility model relates to a kind of teaching and experiment equipment, is the instrument that can demonstrate the reflection of light rule.
Background technology
As everyone knows, light in common medium, the route of process generally be sightless, therefore, in the physics teaching, the reflection of light rule is difficult to demonstration and comes out.Lack demonstration instrument or experimental apparatus preferably in the teaching, also make teaching lack intuitive, cause the student when study, can only mechanically accept the reflection of light rule, this is disadvantageous to training the students to develop in an all round way.
Summary of the invention
For the present situation that the reflexive property that solves present pointolite can not be demonstrated, the utility model provides a kind of reflection of light law demonstration device, and this demonstration device can clearly be demonstrated the reflexive property of bright dipping.
The technical scheme in the invention for solving the technical problem is: base, optical screen, laser gun support, laser gun, laser gun rotating shaft are linked to each other in turn, the laser beam that laser gun sends shines on the facet mirror by the light incident slit at optical screen flanging place, reflection ray projects on the scale mark of optical screen flanging, scale reading is a reflection angle, reads incident angle by slit, incident angle location.A demonstration device base promptly is set, on the base on end one semicircular, the band scale, outward flange rolls over the optical screen that certain angle is arranged forward, 0 vertical in the middle of optical screen degree line is a normal, is the center of semicircle under the normal, and the facet mirror that the center is placed on the base has only a point.Mark the corresponding scale of 0-90 in the both sides of the normal of optical screen, in order to expression tolerance incident angle and reflection angle.On the flanging of normal one side of semi-circular optical screen, open a finedraw, this finedraw should with facet border on the base in same plane.In optical screen one side of cracking, other opens a slit with semi-circular concentric is slit, incident angle location, determines incident angle in order to the residing position of laser gun after observing optical screen.The back side at optical screen, with the semicircle center of circle is that axle is established at the center, cover laser gun support can rotate around the axis on the axle, the slit of the light that laser gun sends by semicircular edge flanging place shines on the facet mirror on the base, reflection ray shines on the scale of optical screen flanging of normal opposite side, can determine reflection angle.Change the size of incident angle, the size that just can see reflection angle is also along with the change of doing to equate.
The beneficial effects of the utility model are: can clearly demonstrate the reflexive property of bright dipping, make the student can learn the reverse rule of light very intuitively.
Said optical screen is that semicircle, central angle are 180 degree optical screens.
Said optical screen is that 3/4ths circles, central angle are 270 degree optical screens.
Said optical screen is that round, central angle is 360 degree optical screens.
Said reflection of light law demonstration device has base.
Said reflection of light law demonstration device does not have base.
Said reflection of light law demonstration device has level crossing.
Said reflection of light law demonstration device does not have level crossing.
Said reflection of light law demonstration device optical screen outward flange flanging and main screen have certain angle.
Said reflection of light law demonstration device optical screen outward flange flanging and main screen are for seamlessly transitting.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the front structural map of reflection of light law demonstration device first embodiment.
Fig. 2 is the vertical view of reflection of light law demonstration device first embodiment.
Fig. 3 is the Facad structure figure of reflection of light law demonstration device second embodiment.
Fig. 4 is the sectional view of optical screen along radial direction.
Fig. 5 is an optical schematic diagram of the present utility model.
1. level crossings among the figure, 2. base, 3.180 degree optical screen, 4. normal, 5. laser guns, 6. slit, incident angle location, 7. laser gun support, 8. laser gun rotating shaft, 9. optical screen flanging, 10. smooth incident slit, 11..270 the degree optical screen, 12. incident angles, 13 reflection angle, 14. reflection rays, 15. incident raies.
Specific embodiment
First embodiment: in Fig. 1, Fig. 2, level crossing (1), base (2), 180 degree optical screens (3), laser gun (5), laser gun support (7), laser gun rotating shaft (8) link to each other in turn, constitute reflection of light law demonstration device.
The laser that laser gun sends shines on the facet mirror on the base by light incident slit, project after light is reflected on the flanging scale of optical screen opposite side, can read reflection angle, readablely from slit, incident angle location go out incident angle, change the size of incident angle, reflection angle is also done the change that equates.
Second embodiment: in Fig. 3,270 degree optical screens (11), laser gun support (7), laser gun (5), laser gun rotating shaft (8) link to each other in turn, can be used for carrying out the refraction law demonstration of light.
The laser that laser gun sends is by light incident slit incident, the place enters another light medium by " O " point, after light is refracted, to the projection of oblique below, shine by this smooth medium on the flanging scale of opposite side under the optical screen, can read the refraction angle, readablely from slit, incident angle location go out incident angle, change the size of incident angle, the refraction angle also clocklike changes.
Claims (9)
1. reflection law demonstration device, base, optical screen, laser gun support, laser gun, laser gun rotating shaft link to each other in turn, it is characterized in that: the laser beam that laser gun sends shines on the facet mirror by the light incident slit at optical screen flanging place, reflection ray projects on the scale mark of optical screen flanging, scale reading is a reflection angle, reads incident angle by slit, incident angle location.
2. reflection law demonstration device according to claim 1 is characterized in that: optical screen is semi-circular, and outward flange is a flanging.
3. reflection law demonstration device according to claim 1 is characterized in that: the outer peripheral flanging glazing of optical screen incident one end has a light incident slit.
4. reflection law demonstration device according to claim 1 is characterized in that: light incident slit on the optical screen outward flange and the facet mirror on the base are at grade.
5. reflection law demonstration device according to claim 1 is characterized in that: have on the optical screen and slit, optical screen concentric incident angle location.
6. reflection law demonstration device according to claim 1, it is characterized in that: optical screen becomes semicircle, and central angle is 180 degree.
7. reflection law demonstration device according to claim 1, it is characterized in that: demonstration device does not have base, and optical screen becomes 3/4ths circles, and central angle is 270 degree.
8. reflection law demonstration device according to claim 1, it is characterized in that: demonstration device does not have base, and optical screen is circular, and central angle is 360 degree.
9. reflection law demonstration device according to claim 1 is characterized in that: at the optical screen back side, the optical screen home position establishes laser gun rotating shaft, support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201589194U CN201054205Y (en) | 2006-11-07 | 2006-11-07 | Refection law demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201589194U CN201054205Y (en) | 2006-11-07 | 2006-11-07 | Refection law demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054205Y true CN201054205Y (en) | 2008-04-30 |
Family
ID=39393867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201589194U Expired - Fee Related CN201054205Y (en) | 2006-11-07 | 2006-11-07 | Refection law demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201054205Y (en) |
-
2006
- 2006-11-07 CN CNU2006201589194U patent/CN201054205Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20080430 Termination date: 20121107 |