Arc-shaped rainbow dynamic regulation and control method and device based on arc-shaped prism

Abstract

The invention discloses an arc-shaped rainbow dynamic regulation and control method and device based on an arc-shaped prism, and the method achieves the high-simulation simulation and dynamic adjustment of a natural rainbow color sequence through the collaborative design of the arc-shaped prism and an adjustable light source in combination with a shading system and an ambient light suppression technology. The device is simple in structure and convenient to operate, is suitable for the fields of scientific education and optical experiments, and has remarkable teaching practicability and technical innovation.

Description

Technical Field

[0001] The present invention relates to the technical field of optical experimental instruments, and particularly relates to a method and device for dynamically regulating a rainbow-colored band through the cooperative action of a circular-arc triangular prism and an adjustable light source, which are applicable to science education, optical demonstration, and experimental research. Background Art

[0002] Traditional rainbow demonstration devices mostly use straight-strip triangular prisms, which only form linear color bands after dispersion and cannot simulate the arc characteristics of natural rainbows. In addition, relying on natural light sources (such as sunlight) results in experiments being restricted by weather, incident angles, and time, with a low success rate. In view of the above problems, the present invention proposes a rainbow generation device based on a circular-arc triangular prism, which combines an adjustable light source and a light-shielding system to break through the limitation of traditional linear color bands and achieve dynamic regulation of the arc rainbow color sequence, while significantly improving the experimental stability and repeatability. Summary of the Invention

[0003] 1. Object of the Invention

[0004] To provide a rainbow generation device and regulation method that can simulate the color sequence of natural rainbows, dynamically adjust the position and width of the color band, and resist environmental light interference.

[0005] 2. Technical Solution

[0006] Device part:

[0007] Circular-arc triangular prism: Made of optical glass or resin, its arc curvature radius matches the radius of the target rainbow color band, and a circular color band with red on the outer layer and purple on the inner layer is formed after dispersion;

[0008] Adjustable electric light source system: Comprising an electric light source, a guide rail, and a slider assembly, the light source moves axially along the guide rail through the slider to adjust its distance from the triangular prism to change the incident angle, thereby controlling the vertical position and width of the color band;

[0009] Light-shielding plate system: A detachable black matte light-shielding plate, installed perpendicular to the incident direction of the light source to eliminate environmental light interference.

[0010] A circular-arc triangular prism arc rainbow generation device, characterized by comprising:

[0011] A circular-arc triangular prism (1), fixed in a prism support (2);

[0012] A guide rail base (6), clamped to the prism support (2);

[0013] The guide rail (5) is fixed to the guide rail base (6) by self-tapping screws;

[0014] The slider (4) is slidably connected to the guide rail (5), and the electric light source (3) is installed through a right-angle corner bracket (8) and self-tapping screws;

[0015] A push-pull handle (7) is provided on the back side of the light source (3) for axially adjusting the position of the light source.

[0016] A light-shielding plate (9) is detachably clamped on the other side of the prism bracket (2) and is made of black matte material.

[0017] After the light source (3) is powered on, it generates white light for experimental demonstration.

[0018] The center point of the light source (3) is coaxial with the geometric center of the arc-shaped triangular prism (1).

[0019] The cooperation structure of the guide rail (5) and the slider (4) enables the axial continuous movement of the light source (3) through the push-pull handle (7).

[0020] The installation direction of the light-shielding plate (9) is perpendicular to the light incident direction to eliminate the interference of ambient light.

[0021] Method part:

[0022] Method for generating a rainbow-colored band: White light is emitted by the light source and dispersed by the arc-shaped triangular prism to form an annular colored band, and the color sequence distribution is determined by the refractive index characteristics of the prism material.

[0023] Dynamic regulation method: Based on the mathematical relationship between the light source position and the incident angle (formula: θ = arc tan(d / L), where d is the light source displacement and L is the initial light source spacing), precise control of the colored band position and width is achieved by adjusting the light source position.

[0024] Ambient light suppression method: Through the geometric matching design of the light-shielding plate and the prism, the stray light reflection path is separated from the colored band.

[0025] 3. Beneficial effects

[0026] Innovation: For the first time, an arc-shaped triangular prism is combined with an adjustable light source to achieve the arc simulation and dynamic regulation of the rainbow color sequence.

[0027] Universality: The relationship between the light source displacement and the colored band parameters is quantified through a mathematical model, which can be adapted to triangular prisms of different sizes.

[0028] Practicality: The light-shielding system significantly improves the clarity of the experiment. The device has a simple structure and low cost, and is suitable for classroom teaching and popular science demonstrations. Description of the drawings

[0029] Figure 1 It is a structural diagram of an arc-shaped rainbow generating device for an arc-shaped triangular prism;

[0030] Figure 2 It is a structural diagram of an arc-shaped rainbow generating device for an arc-shaped triangular prism;

[0031] Figure 3 It is a combined structure diagram of a circular arc-shaped triangular prism and a prism support;

[0032] Figure 4 It is a front view of the combination of a circular arc-shaped triangular prism and a prism support;

[0033] Figure 5 It is a structure diagram of a circular arc-shaped triangular prism;

[0034] Figure 6 It is a front view of a circular arc-shaped triangular prism;

[0035] Figure 7 It is a sectional view of the light of an electric light source passing through a circular arc-shaped triangular prism;

[0036] Figure 8 It is a combined structure diagram of a slider, a guide rail and a guide rail base;

[0037] Figure 9 It is a combined structure diagram of an electric light source, a right-angle corner fitting and a push-pull handle;

[0038] Figure 10 It is a combined structure diagram of an electric light source, a right-angle corner fitting and a push-pull handle;

[0039] Figure 11 It is a structure diagram of a circular arc-shaped triangular prism arc rainbow generating device plus a light-shielding plate;

[0040] Figure 12 It is a structure diagram of a circular arc-shaped triangular prism arc rainbow generating device plus a light-shielding plate.

[0041] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0042] Circular arc-shaped triangular prism 1, prism support 2, electric light source 3, slider 4, guide rail 5, guide rail base 6, push-pull handle 7, right-angle corner fitting 8, light-shielding plate 9. Detailed implementation manners

[0043] Combined with the attached Figures 1-12 , the present invention will be described in detail:

[0044] Structural connection: The circular arc-shaped triangular prism 1 is fixed to the prism support 2; the guide rail base 6 is snap-connected to the prism support 2; the electric light source 3 moves along the guide rail 5 through the slider 4, and the push-pull handle 7 controls the axial position of the light source.

[0045] Principle of operation: White light is a composite light composed of various monochromatic lights. The refractive index of the same medium for different monochromatic lights is different. According to the law of refraction, the deflection angles of each monochromatic light will also be different. Therefore, when white light passes through a triangular prism, each monochromatic light will be separated, forming a dispersion phenomenon. In this device, when the white light generated by the light source 3 passes through the circular arc triangular prism 1, dispersion occurs due to the difference in refractive indices of different monochromatic lights, forming an arc-shaped color band; pushing the push-pull handle 7 can adjust the distance between the light source and the triangular prism, change the incident angle, make the color band move vertically and adjust the width.

[0046] Example 1:

[0047] Assemble the circular arc triangular prism (curvature radius R = 50 cm) and the guide rail system, with the initial distance between the light source L = 30 cm; turn on the light source, push the push-pull handle to move the light source by Δd = 10 cm, the color band moves down 15 cm, and the width decreases by 20%; after installing the light shield, the ambient light intensity decreases by 90%, and the saturation of the color band increases to 95%.

Claims

1. A circular arc prism arc rainbow generating device, characterized in that: include: A circular arc prism (1), the curvature radius of which matches the radius of the target color band; An adjustable light source system comprises an electric light source (3), a guide rail (5) and a slider (4), wherein the light source is moved axially along the guide rail via the slider to adjust the incident angle; The shading plate (9) is detachably mounted and is used to suppress interference from ambient light.

2. A method for dynamically controlling an arc-shaped rainbow ribbon, characterized in that: The following steps are involved: The white light is emitted to the arc-shaped prism by an electric light source; According to the formula θ = arc tan (d / L), where d is the displacement of the light source, the position and width of the ribbon are controlled; Install a sunshade to improve ribbon clarity.

3. The method according to claim 2, characterized in that: The light source displacement d and the color band vertical displacement Δh satisfy a linear relationship Δh=k·d, wherein k is a function of the radius of curvature of the prism.

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