CN104637372A - Hering illusion demonstration instrument - Google Patents

Abstract

The invention discloses a Hexcel illusion demonstrator, which comprises a light box, a transparent plate arranged on the surface of the light box, radial stripes, a first laser, and a second laser; The straight lines intersect at the midpoint, and the shape of the stripes is symmetrical left and right, symmetrical up and down, and the center of the stripes is located in the center of the transparent plate; the first laser and the second laser emit two parallel laser lines along the long side of the transparent plate to intersect the radial stripes, The vertical distance from the center of the radial stripe to the two laser lines is equal. The invention can clearly demonstrate the Hexcelian optical illusion phenomenon, and uses the principle of laser straight-line propagation to identify and distinguish the illusion. The invention can be hung in various science and technology venues, which is beneficial to deepening the understanding of optical illusion phenomena.

Description

Hershey's Illusion Demonstrator

technical field

The invention belongs to the technical field of experimental demonstration devices, and relates to a device for demonstrating optical illusion phenomena, in particular to a Hexcelsk illusion demonstrator.

Background technique

Optical illusions are erroneous judgments and perceptions based on empirical or improper reference when people observe certain objects. There are many types of optical illusions, such as color optical illusions, motion optical illusions, geometric optical illusions, etc. Optical illusions have a wide range of applications in physics, physiology, architectural design, product design, and traffic safety. Designing an optical illusion demonstration device is conducive to enriching the content of popular science activities and stimulating students' interest in exploring scientific secrets.

The Hershey illusion is a line bending optical illusion proposed by the German physiologist and psychologist E. Heilin: after two parallel straight lines are divided by many intersecting straight lines in the middle of the parallel lines, it seems that the middle of the two parallel lines Parts appear bent outward. At present, there is a lack of a dedicated demonstration device to clearly observe and distinguish the Hexcelian illusion.

Contents of the invention

The object of the present invention is to design a Hexcelsk illusion demonstrator which can demonstrate clearly and is beneficial to distinguishing illusions.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: comprising a rectangular light box, a rectangular transparent plate located on the surface of the light box, radial stripes, a first laser, and a second laser; The midpoints intersect to form, the shape of the radial stripes is symmetrical left and right, and symmetrical up and down. The radial stripes are attached to the surface of the transparent plate, and the center of the radial stripes is located in the center of the transparent plate; a light source is provided in the light box to illuminate the transparent plate; the first laser and The second laser is symmetrically fixed up and down on the surface of the light box along a wide side of the transparent plate. The first laser and the second laser emit two parallel laser lines along the long side of the transparent plate to intersect the radial stripes. The center of the radial stripes reaches two beams. The vertical distances of the parallel laser lines are equal.

The color of the radial stripes is black.

The first laser and the second laser are helium-neon lasers.

The beneficial effects of the present invention are: under the interference of radial fringes, the two parallel laser lines emitted by the first laser and the second laser appear to bend outwards in the middle part of each laser line, thereby clearly demonstrating and Experience the phenomenon of the Black Forest illusion. Since the laser follows the principle of straight-line propagation in a homogeneous medium (air), it is impossible to bend, so that illusion recognition and resolution can be performed. The invention can be hung in various science and technology venues, which is beneficial to deepening the understanding of optical illusion phenomena.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a schematic diagram of the structure of the present invention.

In the figure: 1. light box, 2. transparent plate, 3. first laser, 4. second laser, 5. power switch, 21. radial stripe, 22. stripe center, 31. first laser line, 41. second Two laser lines.

Detailed ways

As shown in Figure 1, the present invention comprises a rectangular light box 1, a rectangular transparent plate 2 arranged on the surface of the light box 1, a radial stripe 21, a first laser 3, and a second laser 4; The straight lines intersect at the midpoint to form the radial stripes 21, which are left-right and up-down symmetrical in shape, and the radial stripes 21 are attached to the surface of the transparent plate 2, and the stripe center 22 of the radial stripes 21 is located at the center of the transparent plate 2; There is a light source for illuminating the transparent plate 2; the first laser 3 and the second laser 4 are symmetrically fixed on the surface of the light box 1 up and down along the left side of the transparent plate 2, and the first laser 3 and the second laser 4 are respectively along the length of the transparent plate 2. The side direction emits the first laser line 31 and the second laser line 41 to intersect the radial stripe 21, the first laser line 31 and the second laser line 41 are parallel to each other, and the stripe center 22 reaches the first laser line 31 and the second laser line 41 vertical distances are equal. A power switch 5 is also provided on the surface of the light box 1 , and the power switch 5 is electrically connected to the first laser 3 and the second laser 4 respectively, and is used to turn on or off the first laser 3 and the second laser 4 .

The radial stripes 21 are black stripes, and the first laser 3 and the second laser 4 are helium-neon lasers. The above settings are beneficial to produce a strong red and black color contrast and strengthen the optical illusion effect.

Claims (3)

1. A Hexcel illusion demonstrator, is characterized in that: comprise rectangular light box (1), be located at the rectangular transparent plate (2) of light box (1) surface, radial stripe (21), the first laser device (3), The second laser (4); the radial stripes (21) are formed by the intersecting of a plurality of straight lines with the same thickness at the midpoint. On the surface of the plate (2), the center of the radial stripe (21) is located at the center of the transparent plate (2); a light source is provided in the light box (1) for illuminating the transparent plate (2); the first laser (3) and the second laser (4) fixed symmetrically up and down on the surface of the light box (1) along a wide side of the transparent plate (2), the first laser (3) and the second laser (4) respectively emit two parallel beams along the long side of the transparent plate (2) The laser lines intersect the radial stripes (21), and the vertical distances from the center of the radial stripes (21) to the two parallel laser lines are equal. 2. The Hexcelsk illusion demonstrator according to claim 1, characterized in that: the color of the radial stripes (21) is black. 3 . The apparatus for demonstrating the Hershey illusion according to claim 1 , characterized in that: the first laser ( 3 ) and the second laser ( 4 ) are helium-neon lasers. 4 .