CN204986868U - Straight reflective optical lens of following formula miniature of TV set - Google Patents

Abstract

The utility model discloses a miniature reflective optical lens directly under a television set, which belongs to the technical field of secondary optical lenses of light-emitting diodes. The TV direct type mini reflective optical lens includes a lens body having a light incident surface, a light reflecting surface and a light emitting surface, and it is characterized in that: the light incident surface is composed of a conical surface and a cylindrical surface, and the light reflecting surface The cross-section is a V-shaped microstructure arc surface, the light incident surface and the light reflecting surface are respectively located on the bottom surface and the upper end surface of the lens body, the light exit surface is located on the side wall of the lens body, and the light exit surface is composed of a straight line and a curved line Composition of the surface of revolution. Compared with the ordinary reflective lens, the direct reflective light lens of the utility model has higher light spot uniformity and better light divergence effect. The optimization of its specification and size and the reasonable processing of light efficiency make it more advantageous to be used in ultra-thin TV backlights and flat panel lighting lamps, and improve the unevenness of traditional reflective light spots and high-cost manufacturing.

Description

TV Direct Mini Reflective Optical Lens

technical field

The utility model belongs to the technical field of a light emitting diode (LED, Light Emitting Diode) secondary optical lens, in particular to a miniature reflective optical lens directly under a TV set.

Background technique

The concept of energy conservation and environmental protection has penetrated into the LED backlight display technology. The LED backlight display has changed from the side-emitting method adopted by traditional TVs to a direct-lit distribution. There are currently two technologies for direct-type backlight lenses, namely: light-refractive lens and light-reflective lens. Among them, the light-refractive lens has a relatively weak divergence effect on the light source, so that the backlight module needs a larger projection distance to achieve the effect of uniform transition and no bright and dark bands. The conventional reflective lens can achieve a larger light divergence angle and a shorter projection distance, which has certain advantages, but it will increase its cost due to factors such as more diaphragms and better ink.

Utility model content

In order to overcome the shortcomings and deficiencies of the above-mentioned prior art, the purpose of this utility model is to provide a miniature reflective optical lens directly under the TV. The miniature reflective lens directly under the TV is a new type of LED backlight lens, which solves the problem of uneven light emission directly above the LED light source, especially solves the excessive cost caused by the increase in the number of diaphragms due to insufficient uniformity. High problem; and compared with the current light reflective lens, the miniature size of the utility model can save production raw materials and customer printed circuit boards (PCB boards).

The purpose of the utility model is achieved through the following technical solutions: a miniature reflective optical lens directly under the TV, including a lens body with a light incident surface, a light reflecting surface and a light exit surface, the light incident surface is composed of a conical surface and a The cross section of the reflective surface is a V-shaped microstructure arc surface, the light incident surface and the light reflective surface are respectively located on the bottom surface and the upper end surface of the lens body, the light exit surface is located on the side wall of the lens body, and the light exit surface is located on the side wall of the lens body. The surface consists of a straight line and a curved surface of revolution.

The above-mentioned mini reflective optical lens, wherein the lens body is made of polymethyl methacrylate (PMMA).

The above-mentioned miniature reflective optical lens, wherein, the lens body includes a bottom square base and an upper-end rotator structure lens.

As for the above-mentioned miniature reflective optical lens, wherein, the external dimension of the upper-end rotator structure lens is 15 mm in length, 15 mm in width, and 7 mm in height.

The above-mentioned miniature reflective optical lens, wherein, the reflective surface is composed of a V-shaped microstructure surface directly above and a stepped microstructure surface below.

The above-mentioned miniature reflective optical lens, wherein, the light-emitting surface is a surface treated with spark pattern.

Compared with the prior art, the utility model has the following advantages and effects:

The utility model divides the optical energy of the light incident surface into four different divergent forms according to the uniformity requirement of the receiving surface. After passing through the reflective surface directly above and the reflective paper directly below, it is evenly distributed on the receiving screen, part of which is reflected by the step-shaped microstructure surface directly below to fill the ring with uneven transition, and a small part directly passes through the reflective surface to emit light. The light spot uniformity of the lens is relatively higher and the light divergence effect is better, and it can be applied to ultra-thin TV backlights and flat-panel lighting fixtures. The realization of its higher uniformity and the reduction of structural size reduce the number of display screen diaphragms and PCB board materials, thereby reducing the cost of backlight screens.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is the side structural representation of the utility model;

Fig. 3 is the structural representation of looking up of the utility model;

Fig. 4 is a schematic diagram of the A-A sectional structure of Fig. 3;

Fig. 5 is a schematic diagram of light output of the present utility model;

Among them, 1 light incident surface, 2 light reflecting surface, 3 light emitting surface, 4 lens body, 42 upper end rotating body structure lens, 43 bottom surface square abutment.

detailed description

In order to have a deep understanding of the purpose and effect of the utility model, the implementation of the utility model will be further described in detail below in conjunction with the examples and accompanying drawings, but the implementation of the utility model is not limited thereto.

As shown in Figures 1 to 4, the utility model provides a miniature reflective optical lens directly under the TV, including a lens body 4 having a light incident surface 1, a light reflecting surface 2 and a light exit surface 3, the light incident surface 1 is composed of a conical surface and a cylindrical surface. The cross-section of the reflective surface 2 is a V-shaped microstructure arc surface. 3 is located on the side wall of the lens body 4, and the light-emitting surface 3 is composed of a straight line and a curved surface of revolution.

As shown in Figure 5, after the light passes through the light-incident surface 1, it is divided into four different parts based on the light intensity and energy requirements of the receiving screen, and exits in different ways. The light energy 11, 12 is reflected by the reflective surface 2 and emitted from the side light emitting surface 3; a part of the light 21 is evenly distributed on the receiving screen after passing through the side wall of the light incident surface 1 and the bottom arc of the light emitting surface 3; a part of the light 31 passes through the light incident surface The reflection from the surface 1 and the step-shaped microstructure surface directly below is supplementary light for the ring with uneven transition; a small part of the light 41 directly passes through the reflective surface 2 to emit light.

The lens body 4 is a lens body made of polymethyl methacrylate (PMMA).

The lens body 4 includes a square base 43 on the bottom surface and a lens 42 with an upper-end rotating body structure.

The external dimensions of the upper-end rotating body structure lens 42 are 15 mm in length, 15 mm in width and 7 mm in height.

The reflective surface 2 is composed of a V-shaped microstructure surface directly above and a stepped microstructure surface below.

The light-emitting surface 3 is a spark-patterned surface.

The above-mentioned embodiment is the preferred embodiment of the present utility model, but the embodiment of the present utility model is not limited by the above-mentioned embodiment, any person skilled in the art, any equivalent change made under the design of the present utility model and the prototype , replacement, combination, and simplification should all be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (6)

1. a kind of mini-reflective optical lens directly under the TV, comprising a lens body with a light-incident surface, a light-reflection surface and a light-exit surface, it is characterized in that: the light-incidence surface is made of a conical surface and a cylinder, and the The cross-section of the reflective surface is a V-shaped microstructure arc surface. The light incident surface and the reflective surface are respectively located on the bottom surface and the upper end surface of the lens body. The light exit surface is located on the side wall of the lens body. The light exit surface consists of a straight line and a The surface of revolution of the curve. 2 . The TV direct mini reflective optical lens according to claim 1 , wherein the lens body is made of polymethyl methacrylate. 3 . 3. The direct-down miniature reflective optical lens for TV according to claim 1, characterized in that: said lens body comprises a square base on the bottom surface and a rotatable upper structure lens. 4. The TV direct miniature reflective optical lens according to claim 3, characterized in that: the external dimension of the upper-end rotating body structure lens is 15 mm in length, 15 mm in width and 7 mm in height. 5 . The TV direct miniature reflective optical lens according to claim 1 , wherein the reflective surface is composed of a V-shaped microstructure surface directly above and a stepped microstructure surface below. 6 . 6 . The TV direct-type miniature reflective optical lens according to claim 1 , wherein the light-emitting surface is a fire-patterned surface. 7 .