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Lens for panel lamp and panel lamp comprising lens

A flat lamp and lens technology, applied in the direction of light guides of lighting systems, components of lighting devices, semiconductor devices of light-emitting elements, etc.

Pending Publication Date: 2021-05-07
KUNSHAN CHENGTAI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a lens for a panel lamp and a panel lamp. By arranging a lens between the LED light source and the side of the light guide plate, the converging effect of the light emitted by the LED light source with an enlarged width is improved, so that the light source emits light. Without wasting light and having sufficient light intensity, the light guide plate becomes thinner and lighter, which conforms to the development trend of flat panel lights becoming thinner and thinner, and greatly reduces the cost of the light guide plate

Method used

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  • Lens for panel lamp and panel lamp comprising lens
  • Lens for panel lamp and panel lamp comprising lens
  • Lens for panel lamp and panel lamp comprising lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A kind of lens for panel light, such as figure 1 with 2 As shown, the lens 1 has a light incident surface 11 and a light exit surface 12, the light incident surface is convex, the light exit surface is concave, and the width of the light incident surface is greater than the width of the light exit surface;

[0034] The light emitted by the light source 2 enters the lens through the light-incident surface, is converged by the lens, and finally exits in parallel through the light-exit surface.

[0035] Such as figure 1 As shown, the lens is an integral lens made of the same material with the same refractive index.

[0036] Such as figure 2 As shown, the lens includes a first lens 13 and a second lens 14, the light incident surface of the first lens is convex, the light exit surface of the second lens is concave, the light exit surface of the first lens and the The incident surfaces of the second lens are spliced ​​together.

[0037] The light exit surf...

Embodiment 2

[0042] Embodiment 2: A kind of lens for flat lamp, such as image 3 As shown, a flat panel lamp with the above-mentioned lens, the panel lamp includes an LED light source 3, a light guide plate 4, a reflective layer 5 and a back plate 7, and the back plate, the reflective layer and the light guide plate are sequentially Stacked, the LED light source is located on the side of the light guide plate, the lens is located between the LED light source and the light guide plate, and the light incident surface of the lens is close to the LED light source, and the light exit surface is close to the light guide plate.

[0043] In this embodiment, the flat panel lamp further includes a diffusion layer 6, and the diffusion layer is located on the side of the light guide plate away from the reflective layer.

[0044] Define the thickness of the light incident surface of the lens as D1 and the approximate radius of curvature R1, the thickness of the light exit surface of the lens as D2 and...

Embodiment 3

[0049] Embodiment 3: as Figure 4 As shown, the structure is similar to that of Embodiment 2, except that the panel lamp of this embodiment does not contain a diffusion layer, and the light guide plate includes a substrate 41, and the substrate has two opposite surfaces, which are respectively the front surface 411 and the The back side 412, and the front side is defined as the light-emitting surface, the back side is a frosted surface with a diffusion function for light, the frosted surface is an uneven rough surface formed by concave parts and convex parts, and the front side is hardened (here The treatment is the hard surface of the existing technology, such as surface coating or immersion, so it will not be described in detail);

[0050] There are several light guide points 413 inside the substrate. In this embodiment, the light guide points are located inside the substrate and on the side close to the frosted surface.

[0051] Preferably, the depth of the light guide poi...

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Abstract

The invention discloses a lens for a panel lamp and a panel lamp comprising the lens. The lens is provided with a light inlet face and a light outlet face; the light inlet face is a convex face; the light outlet face is a concave face; the width of the light inlet face is larger than that of the light outlet face; light emitted by a light source enters the lens through the light inlet face, is converged through the lens and finally is emitted out in parallel through the light outlet face; and the panel lamp comprises an LED light source, a light guide plate, a reflecting layer, and a back plate. The lens is arranged between the LED light source and the side face of the light guide plate, the convergence effect of the light emitted by the LED light source with the increased width is improved, the light guide plate becomes lighter and thinner under the conditions that the light emitted by the light source is not wasted and the light intensity is enough, the development trend that a panel lamp becomes lighter and thinner gradually is met, and the cost of the light guide plate is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of optical modules, in particular to a lens for a panel light and a panel light containing the lens. Background technique [0002] LED flat lamp is a high-end indoor lighting fixture. Its outer frame is generally made of aluminum alloy, which is good for heat dissipation. The light source is LED. The design of the whole lamp is beautiful and simple, and the atmosphere is luxurious. Come to the United States to feel. The LED flat light has a unique design. The light passes through the light guide plate with high light transmittance to form a uniform flat luminous effect. The uniformity of illumination is good, the light is soft, comfortable and bright, which can effectively relieve eye fatigue. LED flat lights have no radiation and will not irritate the skin of pregnant women, the elderly, and children. LED flat lights also have the advantages of ultra-thin, simple structure, easy to integrate into the ceil...

Claims

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Application Information

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IPC IPC(8): F21V5/04F21V8/00F21Y115/10
CPCF21V5/04F21V2200/20F21Y2115/10
Inventor 盛玉林
Owner KUNSHAN CHENGTAI ELECTRIC
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