Light guide column, and method and apparatus for adjusting sidewall structure of cylindrical light guide column

A device for configuring a sidewall of a cylindrical light guide column, comprising:

• at least one processor;
• a memory, which is configured to store at least one program;
• wherein the at least one program, when executed by the at least one processor, causes the at least one processor to implement:
• acquiring a size parameter of a light guide column, wherein the size parameter comprises:
• a light incident surface diameter, a light exit surface diameter, a light guide column height, a light guide column refractive index, and an incidence angle of an incident light;
• calculating, based on a law of refraction, a total internal reflection angle of the light guide column according to the light guide column refractive index and an air refractive index, and calculating, in conjunction with the incidence angle of the incident light, a refraction angle of a refracted light that is refracted by a light incident surface of the light guide column;
• determining a first inclination angle range of a sidewall of the light guide column according to the refraction angle and the total internal reflection angle;
• determining, based on the refraction angle and the light incident surface diameter, a first position at which a marginal light of the light guide column is first incident on the sidewall of the light guide column after refracted by the light incident surface;
• and
• shaping, according to the first position, the sidewall of the light guide column,
• wherein in a case where a complementary angle of the refraction angle is less than the total internal reflection angle, the at least one program, when executed by the at least one processor, causes the at least one processor further to implement:
• forming a first inclination surface by adjusting, in a direction from the first position to a bottom surface of the light guide column, the sidewall of the light guide column according to the first inclination angle range, to enable the refracted light to be totally reflected on the first inclination surface;
• wherein in a case where the complementary angle of the refraction angle is greater than or equal to the total internal reflection angle, the at least one program, when executed by the at least one processor, causes the at least one processor further to implement:
• forming a second inclination surface by adjusting, in the direction from the first position to the bottom surface of the light guide column, the sidewall of the light guide column according to a first included angle between a first connection line and the sidewall of the light guide column, to enable the refracted light to be totally reflected on the second inclination surface and hit a target light exit point, wherein the first connection line is formed by connecting the target light exit point of a light exit surface of the light guide column and the first position;
• and
• wherein the at least one program, when executed by the at least one processor, causes the at least one processor to further implement:
• determining, based on the refraction angle and the light incident surface diameter, a second position at which the marginal light of the light guide column is first incident on the first inclination surface after refracted by the light incident surface;
• and
• forming a third inclination surface by adjusting, in a direction from the second position to the bottom surface of the light guide column, the sidewall of the light guide column according to a second included angle between a second connection line and the first inclination surface, to enable the refracted light to be totally reflected on the third inclination surface and hit the target light exit point, wherein the second connection line is formed by connecting the target light exit point of the light exit surface of the light guide column and the second position.