TWI673618B - Light guide assisted design method - Google Patents

Abstract

A light guide-assisted design method includes: selecting a light source from a database by a processor; selecting a geometric shape and a refractive index of the light guide from the database by a processor; and setting any light medium by the processor. The surface is a light incident surface and a light emitting surface, a processor calculates an incident point, an incident angle, a reflection angle, and a refraction angle of the light emitting source from the light incident surface, and a processor calculates the energy of the light emitting source on the light incident surface and the light emitting surface, respectively. This method can reduce the time for the user to re-correct the light guide.

Description

Light guide assisted design method

The invention relates to a computer-aided design method, in particular to a computer-aided design method of a light guide.

In order for the light emitted from the light source on the motherboard to be transmitted to the surface of the chassis, the R & D personnel must design a suitable light guide between the light source and the surface of the casing, so that the light can be transmitted to the surface of the chassis through the light guide without Too much light energy is lost. However, the current computer-aided design tool for light guides can only provide the energy for the R & D personnel. The R & D personnel cannot know the state of the light emitted by the light source in the light guide and the state of energy loss. You must rely on experienced experts to efficiently design the right light guide.

In view of this, there is indeed a need for an improved computer-aided design method of light guides, which can at least solve the above disadvantages.

An embodiment of the present invention provides a computer-aided design method of a light guide, which can provide effective data to assist a developer in designing the light guide.

According to an embodiment of the present invention, a light guide assisted design method is provided. The method includes: selecting a light source, a geometric shape and a refractive index of the light guide from a database by a processor; and setting any two of the light guide by the processor. The medium surface is the light incident surface and light exit surface of the light source; and the processor calculates the incident point, incident angle, reflection angle, and refraction angle of the light source from the light incident surface; and the processor calculates the light source from the light incident surface and the light incident surface, respectively. The energy of the light-emitting surface.

The light guide assisted design method according to an embodiment of the present invention can be applied to a computer application program. A researcher can calculate the light incident surface energy, light exit surface energy, and light path of any section of the light guide body through the application program. In this way, it can reduce the time for the R & D personnel to re-modify the structural features and materials of the light guide, and at the same time, achieve the expected light utilization rate of the energy transmitted from the light source to the light emitting surface.

The above description of the contents of this disclosure and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient for any person skilled in the art to understand and implement the technical contents of the present invention. Anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any way.

1 is a flowchart illustrating a light guide assisted design method according to a first embodiment of the present invention. In step S101, a processor selects a light source from a light source template of a database, such as a personal computer. Or a cloud server, and the processor is, for example, a chip or a logic circuit. The light source template includes several pre-selected light sources with different field angles. The various pre-selected light sources are established using the Fibonacci Grid method. The so-called Fibonacci Grid method is to first establish a uniformly distributed linear feature in the space to represent the point light source, and then based on the energy distribution of the point light source at different light emission angles to learn that the point light source in the three-dimensional space Angle of luminous intensity. In step S102, a coordinate position of the light emitting source in the electronic device is set by the processor, wherein the light emitting source is set on a motherboard in the electronic device and is located outside the light guide in the electronic device. In step S103, a processor selects a geometric shape and a refractive index of a light guide from a database light guide template. In step S104, the processor sets a specified light from the light emitted from the light source. In step S105, the processor sets the upper limit of the number of reflections (refractions) of the specified light in the light guide body, thereby limiting the number of reflections of the specified light in the light guide body to avoid the processor from over-calculating. In step S106, the processor uses the data of the light guide geometry, the refractive index, and the upper limit of the number of reflections to calculate the incident angle when the specified light is incident on the surface of the light guide based on Snell`s Law, The reflection angle and refraction angle, the incident angle and reflection angle of the specified light rays on each reflecting surface of the light guide body, and the incident angle, reflection angle, and refraction angle of the light guide body out of the light guide body, thereby calculating the travel of the specified light rays in the light guide body path. In step S107, the processor uses the refractive index of the light guide, the incident angle, the reflection angle, and the refraction angle when the specified light is incident on the surface of the light guide, and the incident angle and the reflection of the specified light on each reflecting surface in the light guide. The angle and the angle of incidence, reflection, and refraction of the specified light exiting the light guide. Based on Fresnel Equations, the energy of the specified light incident on the surface of the light guide and the energy of the specified light in the light guide are calculated. The energy of each reflecting surface and the energy of a given light beam when it exits the light guide.

In other embodiments, after step S104 and before step S105, a program for selecting a light blocking body between the light emitting source and the light guiding body from the light blocking body template in the database by a processor may be added. This prevents the processor from performing excessive calculations.

2 is a flowchart illustrating a light guide assisted design method according to a second embodiment of the present invention. The method includes: in step S201, a processor selects a light source from a database light source template. The light source template includes several pre-selected light sources with different field angles. The various pre-selected light sources are established using the Fibonacci Grid method. In step S202, the processor calculates the total energy of the light source. In step S203, a coordinate position of the light source originating in the electronic device is set by the processor, wherein the light source is disposed on a motherboard in the electronic device and located outside the light guide in the electronic device. In step S204, the processor selects the geometry and refractive index of a light guide from the light guide template in the database. In step S205, the processor sets the light incident surface and the light emitting surface of the light guide, and any medium surface of the light guide can be set as the light incident surface and the light emitting surface. In step S206, the processor sets the upper limit of the number of reflections of each light emitted by the light source in the light guide body, thereby limiting the number of reflections of the light emitted by the light source in the light guide body to avoid the processor from excessive calculations. In step S207, the processor sets the lower limit of the ratio of the light surface energy and the light incident surface energy (light utilization ratio), so that the light energy emitted by the light source will not cause a large amount of energy in the process of being transmitted to the light guide. Lost. In step S208, the processor calculates based on the data of the light guide geometry, the refractive index, and the upper limit of the number of reflections based on Snell`s Law. The light source is emitted when each light is incident on the surface of the light guide. Angle of incidence, reflection angle, and refraction angle, the angle of incidence and reflection of each light ray on each reflecting surface in the light guide body, and the angle of incidence, reflection angle, and refraction angle of each light ray out of the light guide body. The path that all light emitted by the light source travels within the light guide. In step S209, the processor according to the refractive index of the light guide, the incident angle, reflection angle and refraction angle when the light source is incident on the surface of the light guide, and the incidence of light emitted by the light source on each reflecting surface in the light guide body. The angle, reflection angle, and incident angle, reflection angle, and refraction angle of the light emitted from the light source out of the light guide are calculated based on Fresnel Equations. The total energy when the starting light source is incident on the light incident surface and the light source The total energy of the emitted light on each reflecting surface in the light guide body and the total energy of the light emitted by the light source when it exits the light emitting surface.

In other embodiments, after step S205 and before step S206, the method further includes adding a program for selecting a light blocking body located between the light emitting source and the light guiding body from the light blocking body template in the database by the processor, thereby Reduce the processor to perform excessive calculations, or add a processor to set the direction and distance of the light emitted from the light emitting surface after step S207 and before step S208, for the convenience of the user to the light emitted from the light emitting surface of the light guide. For subsequent processing and application.

FIG. 3 to FIG. 9 are schematic diagrams illustrating that the light guide assisted design method according to the first embodiment of the present invention is applied to computer software to calculate a travel path of a specified light in the light guide. As shown in FIG. 3 and FIG. 4, a processor selects a light source 100 from three light sources 100, 200, and 300 with different light source field angles stored in the database. As shown in FIG. 5, the coordinate position of the light emitting source 100 in the electronic device is set by the processor, wherein the light emitting source 100 is located on the motherboard in the electronic device and outside the light guide. As shown in FIG. 6, a designated light L1 is set by the processor from the light emitted from the light source 100. As shown in FIG. 7, a processor selects a light guide 102 from a plurality of pre-selected light guides with geometric shapes and refractive indexes stored in a database. As shown in FIG. 8, the processor selects a light blocking body 103 from a plurality of pre-selected light blocking bodies of geometric shapes stored in the database, and sets an upper limit of the number of reflection times of the light L1 in the light guiding body 102. As shown in FIG. 9, the processor calculates the travel path of the designated light L1 in the light guide 102 and the energy of the designated light L1 on the four media surfaces S1 to S4 of the light guide 102. By analyzing the data of the travel path of the specified light L1 on the light guide 102 and the energy on each dielectric surface S1 ~ S4, the R & D personnel can re-modify the geometric characteristics and materials of the light guide, and then modify the modified The light guide structure is uploaded to the database.

FIG. 10 to FIG. 13 are schematic diagrams illustrating that the light guide assisted design method according to the second embodiment of the present invention is applied to computer software to calculate the travel path of light emission from the light guide. The following only describes the differences between the light source and the specified light, and the same parts are not repeated. As shown in FIG. 10 and FIG. 11, a processor is set as a light incident surface F1 and a light emitting surface F2 of the light source 400 from any two dielectric surfaces of the light guide 202. As shown in FIG. 12, the processor sets the upper limit of the number of reflections of each light emitted from the light source 400 in the light guide 202, the lower limit of the ratio of the total energy of the light exit surface to the total energy of the light entrance surface, and the amount of light emitted from the light exit surface. distance. As shown in FIG. 13, the processor calculates the travel path of the light emitted by the light source 400 in the light guide 202, the initial total energy of the light source, the total energy of the light incident surface, and the ratio of the total energy of the light incident surface to the initial total energy (light Utilization), the total energy of the light emitting surface, and the ratio of the total energy of the light emitting surface to the total energy of the light incident surface.

The light guide assisted design method of the present invention can be applied to computer software, and the processor can set any two medium surfaces of the light guide as the light entrance surface and the light exit surface, and then analyze the light travel path of any section of the light guide and The energy distribution can reduce the time for the R & D personnel to modify the geometric features and materials of the light guide, and at the same time, enable the energy transmitted from the light source to the light exit surface to meet the expected light utilization rate.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the patent protection scope of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

100, 200, 300, 400‧‧‧

L‧‧‧Specified light

102, 202‧‧‧ Light guide

103‧‧‧Light Block

S1 ~ S4‧‧‧Medium surface

F1‧‧‧Glass surface

F2‧‧‧light surface

FIG. 1 is a flowchart of a light guide assisted design method according to a first embodiment of the present invention. FIG. 2 is a flowchart of a light guide assisted design method according to a second embodiment of the present invention. FIG. 3 to FIG. 9 are schematic diagrams illustrating a method for designing a light guide body according to the first embodiment of the present invention applied to computer software to calculate a travel path of a specified light in the light guide body. FIG. 10 to FIG. 13 are schematic diagrams of a light guide assisted design method according to a second embodiment of the present invention applied to computer software to calculate the travel path of light emission from the light guide.

Claims (9)

A light guide assisted design method includes: selecting a light source from a database by a processor; selecting the geometry and refractive index of a light guide from the database by the processor; and setting by the processor Any two dielectric surfaces of the light guide are a light incident surface and a light emitting surface of the light source, respectively. After the processor sets the light incident surface and the light emitting surface, the processor selects one from the database using the processor. A light block located between the light source and the light guide; after the processor selects the light block, the processor calculates an incident point, an incident angle, an A reflection angle and a refraction angle; and calculating, by the processor, the total energy of the light source on the light incident surface and the light exit surface, respectively. The light guide-assisted design method according to claim 1, wherein the light source is established by a Fibonacci Grid method. The light guide-assisted design method according to claim 1, further comprising setting the processor after the light source is selected by the processor and before the geometry and refractive index of the light guide are selected by the processor. The light comes from a target location in an electronic device. The light guide-assisted design method according to claim 1, wherein the processor calculates the reflection angle and the refraction angle according to Snell's law. The light guide-assisted design method according to claim 1, wherein the processor calculates a total energy of the light source from the light incident surface and the light emitting surface according to the Fresnel equation. The light guide auxiliary design method according to claim 1, further comprising setting the light emitting surface and the light emitting surface by the processor, and calculating the incident point, the incident by the processor. Before the angle, the reflection angle, and the refraction angle, the processor sets the upper limit of the number of reflections of the light emission source from the light guide body. The light guide auxiliary design method according to claim 1, further comprising setting the light emitting surface and the light emitting surface by the processor and calculating the incident point, the incident angle, the reflection angle, and the refraction angle by the processor. Before, the processor sets the lower limit of the ratio of the total energy of the light emitting surface to the total energy of the light incident surface. The light guide-assisted design method according to claim 1, further comprising calculating the initial total energy of the light source by the processor after the light source is selected with the sharp tool. The light guide auxiliary design method according to claim 1, further comprising setting the light emitting surface and the light emitting surface by the processor and calculating the incident point, the incident angle, the reflection angle, and the refraction angle by the processor. Previously, the distance and direction of light emitted from the light emitting surface were set by the processor.