Light guide plate
By designing regular equidistant spherical convex lens structure exit points and irregularly distributed concave lens structure incident points on the light guide plate, combined with the anti-blue light film, the problems of uneven light emission and dazzling blue light are solved, and more uniform and soft light is achieved Output and vision protection.
Patent Information
- Application Number
- CN202421052352.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing light guide plates have problems such as uneven light emission, insufficient brightness and dazzling blue light.
Design a light guide plate with a regular equidistant spherical convex lens structure exit points, and an irregularly distributed concave lens structure incident points are formed at the edge of the incident surface. Combined with the anti-blue light film covered by the exit surface, ensuring uniform distribution of light and soft output.
The light uniformity of the lamp is achieved, reducing the unevenness of light and darkness, and protecting users' vision through anti-blue light film to avoid the dazzling blue light.
Smart Images
Figure CN222186712U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of light guide plates for lighting, in particular to a light guide plate. Background Art
[0002] The light guide plate mainly uses optical-grade acrylic sheet or PC sheet, which is a high-tech material with extremely high reflectivity and does not absorb light. Laser engraving, V-shaped cross grid engraving or UV screen printing technology are used to print multiple light guide points on the bottom surface of the acrylic sheet or PC sheet. The light guide points are also called dots. When using acrylic sheet, the main purpose is to use the optical-grade acrylic sheet to absorb the light emitted from the lamp and stay on the surface of the optical-grade acrylic sheet. When the light hits each dot, the reflected light will diffuse to all angles and then be emitted from the front of the light guide plate. Therefore, light guide plates are widely used in various lighting fixtures, such as classroom lamps, table lamps, ceiling lamps and other scenes.
[0003] At present, some light guide plates still have problems such as uneven light emission, insufficient brightness, and even blue light that hurts the eyes, so it is necessary to develop a light guide plate to meet usage needs. Utility Model Content
[0004] In order to solve the above problems, the utility model adopts the following technical solutions:
[0005] A light guide plate, comprising a light guide plate body, characterized in that the exit surface of the light guide plate body is formed with a plurality of exit points; the exit points are convex lens structures integrally formed on the light guide plate body and having a spherical curved surface design; the exit points are equidistantly arranged, and the longitudinal and lateral spacings are both in the range of 0.65 mm to 0.75 mm; the longitudinal and lateral spacings between the exit points and the edge of the light guide plate body are in the range of 0.30 mm to 0.35 mm.
[0006] Preferably, the light guide plate body can be manufactured into a circular or square shape.
[0007] Preferably, a plurality of concave lens structures with spherical curved surface designs are formed at the edge of the incident surface of the light guide plate body, and the incident points have a diameter size ranging from 0.025 mm to 0.035 mm.
[0008] Preferably, the positions of the incident mesh points are irregularly dispersed within a fixed range, and the fixed range refers to a plane area range of 2 mm width at the edge of the incident surface.
[0009] Preferably, the diameter of the exit points ranges from 0.015 mm to 0.025 mm.
[0010] Preferably, the protruding height or sunken depth of the exit points and the incident points on the light guide plate body are equal to their respective radius dimensions.
[0011] Preferably, the emitting surface of the light guide plate body is covered with a layer of anti-blue light film.
[0012] Compared with the prior art, the advantages of the present invention are: the present invention makes the uniformity of the lamps used with the present invention better by forming regularly equidistant exit points on the exit surface and dispersed incident points at the edge of the incident surface. In addition, the anti-blue light film covering the exit surface allows the present invention to achieve uniform, soft and non-glaring light, thereby providing better protection for the user's eyesight. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model.
[0014] Figure 2 It is a schematic diagram of a partially enlarged top view of the output surface of the utility model.
[0015] Figure 3 It is a partially enlarged top view structural schematic diagram of the incident surface of the utility model. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figure 1 and Figure 3 As shown, the utility model is a light guide plate, which can be adapted for use in scenes such as classroom lamps, table lamps, long ceiling lamps in offices, etc. Its detailed design brings users a uniform experience of blue light protection and eye protection. Therefore, within the designed range of data, it can be made into a round or square shape to meet the use in more occasions.
[0018] The utility model mainly consists of a light guide plate body (1) and an anti-blue light film (2) covering the exit surface of the light guide plate body (1); the exit surface of the light guide plate body (1) is formed with a plurality of exit points (10), and the exit points (10) are convex lens structures with a spherical curved surface design integrally formed on the light guide plate body (1); and the incident surface on the other side of the light guide plate body (1) is formed with a plurality of concave lens structures with a spherical curved surface design at the edge. The exit points (10) are arranged equidistantly from each other, and the longitudinal spacing and the transverse spacing are both in the range of 0.65 mm to 0.75 mm. The longitudinal spacing and the transverse spacing between the exit points (10) and the edge of the light guide plate body (1) are in the range of 0.30 mm to 0.35 mm. This is a margin reserved for frame covering assembly to prevent the frame from blocking the exit points (10) or the exit points (10) from hindering the normal fitting assembly of the frame.
[0019] The diameter size range of the exiting mesh point (10) is between 0.015 mm and 0.025 mm, and the diameter size range of the incident mesh point (11) is between 0.025 mm and 0.035 mm. It should be noted that the positions of the incident mesh points (11) are irregularly dispersed within a fixed range, and the fixed range refers to a 2 mm wide plane area range at the edge of the incident surface, that is, it is formed at the peripheral edge of the light guide plate body (1), and its function is to refract the light at the edge. Because one of the standards for determining the quality of a light guide plate is whether there is uneven brightness on the light incident side of the light guide plate, the utility model significantly reduces the uneven brightness at the edge and the light incident side by designing the incident mesh points (11). This method is called lens-type light entry elimination Hot Sopt phenomenon, because the concave lens can diverge light, the concave incident surface can disperse the incident light, so that the light incident into the light guide plate body (1) is dispersed, so that the light can be evenly distributed on the light-incoming side of the light guide plate body (1), which is conducive to reducing the uneven brightness and darkness, thereby obtaining better uniformity, and the utility model is only for forming incident grid points (11) within a certain range of the plane area at the edge, so as to avoid too many irregularly scattered incident grid points (11) will affect the light output of the regularly formed exit grid points (10). It can be extended to explain that the protruding height or sunken depth of the exit grid points (10) and the incident grid points (11) on the light guide plate body (1) are equal to their respective radius dimensions.
[0020] The above design can make the uniformity of the lamp used with the utility model better. In addition, the anti-blue light film provided on the emission surface can further make the utility model realize uniform, soft and non-glaring light, and can better protect the user's eyesight.
[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.
Claims
1. A light guide plate, comprising a light guide plate body (1), characterized in that: The exit surface of the light guide plate body (1) is formed with a plurality of exit points (10); the exit points (10) are convex lens structures integrally formed on the light guide plate body (1) and having a spherical curved surface design; the exit points (10) are arranged equidistantly from each other, and the longitudinal spacing and the transverse spacing are both in the range of 0.65 mm to 0.75 mm; the longitudinal spacing and the transverse spacing between the exit points (10) and the edge of the light guide plate body (1) are in the range of 0.30 mm to 0.35 mm.
2. The light guide plate according to claim 1, characterized in that: The light guide plate body (1) can be manufactured into a circular or square shape.
3. The light guide plate according to claim 1, characterized in that: A plurality of concave lens structures with spherical curved surface designs are formed at the edge of the incident surface of the light guide plate body (1), which are incident grid points (11) with a diameter size ranging from 0.025 mm to 0.035 mm.
4. The light guide plate according to claim 3, characterized in that: The positions of the incident mesh points (11) are randomly dispersed within a fixed range, and the fixed range refers to a plane area range of 2 mm width at the edge of the incident surface.
5. The light guide plate according to claim 1, characterized in that: The diameter size of the exit mesh point (10) ranges from 0.015 mm to 0.025 mm.
6. The light guide plate according to claim 1, characterized in that: The protruding height or sunken depth of the exit grid point (10) and the incident grid point (11) on the light guide plate body (1) are equal to their respective radius dimensions.
7. The light guide plate according to claim 1, characterized in that: The emitting surface of the light guide plate body (1) is covered with a layer of anti-blue light film (2).