CN215341612U - Rainbow principle demonstration instrument - Google Patents
Rainbow principle demonstration instrument Download PDFInfo
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- CN215341612U CN215341612U CN202121273588.XU CN202121273588U CN215341612U CN 215341612 U CN215341612 U CN 215341612U CN 202121273588 U CN202121273588 U CN 202121273588U CN 215341612 U CN215341612 U CN 215341612U
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- camera bellows
- rainbow
- led spotlight
- lateral wall
- ball
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Abstract
The utility model provides a rainbow principle demonstration appearance, be provided with the camera bellows on the base, the back lateral wall is white in the camera bellows, and back lateral wall lower extreme is provided with white LED spotlight in the camera bellows, is provided with rectilinear movement mechanism on the base along LED spotlight outgoing direction, is provided with the ball seat on the rectilinear movement mechanism, has placed the crystal ball on the ball seat, and the centre of sphere of crystal ball is located the central line of LED spotlight emergent light, and lateral wall upper end is provided with the observation hole before the camera bellows, and the lower extreme is provided with the installing window, is provided with the apron on the installing window. The rainbow image forming device is simple in structure, low in manufacturing cost, intuitive in principle, clear in formed rainbow image, and capable of meeting requirements of student experiments and popular science displays.
Description
Technical Field
The utility model belongs to the technical field of optical experimental instruments, and particularly relates to a rainbow principle demonstration instrument.
Background
Rainbow is one of the most miraculous natural phenomena. How does a rainbow form? From the physical point of view, the key is to explore how the water drops are irradiated by the sunlight and the seven colors of light appear. This involves knowledge about the dispersion of light in the physical optics section of junior middle schools, etc. In practical teaching, students have common cognitive difficulty on the formation of rainbow, and many students cannot understand or even do not know the formation principle of rainbow and the arrangement rule of colors. The rainbow phenomenon and the formation principle are demonstrated by using a teaching instrument, and the method is an effective way for breaking through the cognitive difficulty of students. However, most of the existing rainbow demonstration instruments use a prism, spraying and other methods to show the formation of the rainbow, and the problems that the demonstration effect is poor, the principle difference with the actual rainbow formation is large, the demonstration instrument is difficult to manufacture, the requirement on the display environment is high and the like exist generally.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior rainbow demonstration instrument and provide the rainbow principle demonstration instrument which has the advantages of reasonable design, low cost, convenient operation and obvious experimental effect.
The technical scheme for solving the technical problems is as follows: the utility model provides a rainbow principle demonstration appearance, be provided with the camera bellows on the base, the back lateral wall is white in the camera bellows, and back lateral wall lower extreme is provided with white LED spotlight in the camera bellows, is provided with rectilinear movement mechanism on the base along LED spotlight outgoing direction, is provided with the ball seat on the rectilinear movement mechanism, has placed the crystal ball on the ball seat, and the centre of sphere of crystal ball is located the central line of LED spotlight emergent light, and lateral wall upper end is provided with the observation hole before the camera bellows, and the lower extreme is provided with the installing window, is provided with the apron on the installing window.
As a preferable technical scheme, the diameter of the crystal ball is 5-10 cm.
As a preferable technical solution, the linear moving mechanism is a slide guide mechanism.
As a preferable technical proposal, the cover plate 5 is arranged on the front side wall of the camera bellows through a hinge.
The utility model has the following beneficial effects:
the utility model has the advantages that the lower end of the rear side wall in the camera bellows is provided with the white LED spotlight, the crystal ball is arranged on the ball seat along the emergent direction of the LED spotlight, white light irradiates on the crystal ball, refraction-reflection-refraction is generated on the interface of the crystal ball and air, and finally the white light is projected on the rear side wall in the camera bellows, and the arc rainbow can be seen through the circular observation hole on the front side wall.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
In fig. 1, the rainbow principle demonstrator of this embodiment is composed of an LED spotlight 1, a camera bellows 2, a crystal ball 3, a ball seat 4, a cover plate 5, a slider guide rail mechanism 6, and a base 7, wherein the rectangular camera bellows 2 is installed on the base 7, the rear side wall in the camera bellows 2 is white, the white LED spotlight 1 is fixedly installed at the lower end of the rear side wall in the camera bellows 2, a slider guide rail mechanism 6 is fixedly installed on the base 7 along the emitting direction of the LED spotlight 1 by a screw fastening connector, the ball seat 4 is installed on the slider of the slider guide rail mechanism 6 by a screw fastening connector, the crystal ball 3 is placed on the ball seat 4, the diameter of the crystal ball 3 is 8cm, 5cm or 10cm, the center of the crystal ball 3 is located on the center line of the emitting light of the LED spotlight 1, a circular observation hole a is processed at the upper end of the front side wall of the camera bellows 2, a square installation window b is processed at the lower end, installation window b is used for adjusting the distance between crystal ball 3 and LED spotlight 1, installs apron 5 on the installation window b, and apron 5 passes through the hinge mount on 2 preceding lateral walls of camera bellows, and apron 5 closely cooperates with camera bellows 2, prevents that natural light from entering camera bellows 2, influences the experiment effect.
White light emitted by the LED spotlight 1 irradiates the crystal ball 3, is refracted, reflected and refracted on the interface between the crystal ball 3 and the air, and is finally projected onto the rear side wall in the camera bellows 2, and the arc rainbow can be seen through the circular observation hole in the front side wall.
Claims (4)
1. A rainbow principle demonstration instrument is characterized in that: be provided with camera bellows (2) on base (7), the back lateral wall is white in camera bellows (2), back lateral wall lower extreme is provided with white LED spotlight (1) in camera bellows (2), be provided with rectilinear movement mechanism on base (7) along LED spotlight (1) outgoing direction, the last ball seat (4) that is provided with of rectilinear movement mechanism, crystal ball (3) have been placed on ball seat (4), the centre of sphere of crystal ball (3) is located the central line of LED spotlight (1) emergent light, camera bellows (2) preceding lateral wall upper end is provided with inspection hole (a), the lower extreme is provided with installation window (b), be provided with apron (5) on the installation window.
2. A rainbow principle demonstrator according to claim 1, wherein: the diameter of the crystal ball (3) is 5-10 cm.
3. A rainbow principle demonstrator according to claim 1, wherein: the linear moving mechanism is a slide block guide rail mechanism (6).
4. A rainbow principle demonstrator according to claim 1, wherein: the cover plate (5) is arranged on the front side wall of the dark box (2) through a hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121273588.XU CN215341612U (en) | 2021-06-08 | 2021-06-08 | Rainbow principle demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121273588.XU CN215341612U (en) | 2021-06-08 | 2021-06-08 | Rainbow principle demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215341612U true CN215341612U (en) | 2021-12-28 |
Family
ID=79556285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121273588.XU Active CN215341612U (en) | 2021-06-08 | 2021-06-08 | Rainbow principle demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215341612U (en) |
-
2021
- 2021-06-08 CN CN202121273588.XU patent/CN215341612U/en active Active
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