CN104748070A

CN104748070A - LED lens capable of improving surface brightness and uniformity of applied lamp

Info

Publication number: CN104748070A
Application number: CN201510131197.7A
Authority: CN
Inventors: 李成学
Original assignee: Shanghai Great Jing Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
Current assignee: Shanghai Great Jing Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
Priority date: 2015-03-25
Filing date: 2015-03-25
Publication date: 2015-07-01

Abstract

The invention relates to an LED lens capable of improving the surface brightness and uniformity of an applied lamp. The LED lens capable of improving the surface brightness and uniformity of the applied lamp comprises a circular truncated cone body, multiple corrugated protruding edges are distributed directly on the top surface of the circular truncated cone body, and the cross section of each corrugated protruding edge is in the shape of a semicircle; the longitudinal section of the circular truncated cone body is in the shape of an isosceles trapezoid, extension cords of the two equal sides of the trapezoid intersects with each other to form a 36-degree included angle, a bottom table is fixedly installed at the bottom of the circular truncated cone body, a top circle slotted hole is formed in the bottom surface of the bottom table, and the two side of the interior of the top circle slotted hole are each provided with a segment of locating inclined plane; a circular hole is formed in the bottom surface of the circular truncated cone body, and an arc-shaped concave surface is arranged on the inner end surface, located at the inner side of the circular truncated cone body, of the circular hole. The LED lens capable of improving the surface brightness and uniformity of the applied lamp has the advantages that an irritation angle can be made to be at about 8.6 * 36 degrees, emitted light rays are more concentrated, and compared with an existing lens on the market, brightness of a light spot center increases by over 50% when the light rays are emitted to the same distance; a light bar made by using the lens can make the surface brightness and uniformity of a light box reach more than 80%.

Description

A kind of LED lens improving institute's application luminaire surface brightness uniformity

Technical field

The present invention relates to a kind of optical equipment, particularly relate to a kind of LED lens improving institute's application luminaire surface brightness uniformity.

Background technology

Together with namely LED lens are closely connected with LED, service efficiency and the luminous efficiency of light can be strengthened, different lens can be used according to different effects to change the optical system of the optical field distribution of LED.

The advantage of optical glass material is the optical parametric characteristic enriched, and has that light transmittance is high, heatproof high; Shortcoming is that the large quality of volume is heavy, shape is single, frangible, batch production not easily realizes, production efficiency is low, high in cost of production.In addition, glass expects frangible shortcoming compared with PMMA, PC, also need more research and discovery, the non-friable characteristic of glass can only be promoted by plated film or tempering process, although through these process, the light transmittance of glass lens can decrease, and still can be far longer than the translucent effect of ordinary optical plastic lens, so the prospect of glass lens will be more wide.

For some characteristics, first, no matter far and near LED lens are, and it doesn't matter much for lampshade (reflector) and lens, uniformity, and lens can be better than reflector; The luminous evenly point range of lampshade is large, but light projector degree is bad, and lens are then contrary; The saturating border of LED seems and wants high-grade.

The general diameter of LED lens is 3 ~ 10mm, sheet type, small volume, contributes to promoting the light extraction efficiency of LED, changing the optical field distribution of LED, and be commonly used on LED chip, the lens of the existing LED of being applied to are mainly penetration and refraction-reflection two kinds.

In penetration, when the curved surface light of LED light through lens can occur to reflect and optically focused, and angle also can change when adjusting the distance between lens and LED, but due to the restriction of lens diameter and Lens-Mode, there is obvious yellow limit at the not high and hot spot edge of the light utilization efficiency of LED; Refraction-reflection can obtain good light and utilize and beautiful hot spot effect, but how to adjust the structure of reasonable LED lens, Appropriate application luminous flux, evenly, efficiently Light distribation one side needs are with varying depending on the application in realization, and the adjustment how another aspect each several part realizes astigmatism or optically focused also can combine and adjust by needs because the difference of application needs.

Thus, application publication number is CN102588881 A, application number be 201210079097.0 Chinese patent disclose a kind of LED lens, mainly solve the not high and hot spot edge of existing penetration LED lens light utilization rate and have obvious yellow limit, and the adjustment of refraction-reflection LED lens is more difficult, inconvenient problem with use, feature is that the profile of lens becomes truncated cone-shaped substantially, one section of cylinder at the large nose circle of truncated cone-shaped, cylindrical front end face is shaped with uniform parallel protruding rib, the cross section of protruding rib is circular arc, a square opening is had in the middle of the little nose circle of truncated cone-shaped, the top of square opening is convex spherical, be mainly used in back light, meanwhile, bottom Rotary-table, only arrange a square opening, this structure and existing a lot of product all also exist the problem of lighting angle, are not suitable for lamp box structure, cannot reach the desirable lamp box surface brightness uniformity.

Equally, on market, existing oval hot spot lens lighting angle is bigger than normal, general about 10*45 degree, and the light of injection is not concentrated, at the many veiling glares of main spot side, when light is penetrated a little further a little, brightness declines obviously, so be placed in lamp box with the lamp bar that this lens are made or outside time, lamp box intermediate luminance can be obviously much lower than putting near lamp bar position, and the lamp bar made with these lens can make at most the lamp box surface brightness uniformity about 60%, thus inapplicable.

This case can significantly improve the above situation, improve through practice, lighting angle is about 8.6*36 degree and the light of injection is more concentrated, when penetrating identical distance and the existing lens in market to compare spot center brightness high by more than 50%, the lamp bar made with these lens can make the lamp box surface brightness uniformity reach more than 80%.

Therefore, for above aspect, need effectively to innovate prior art.

Summary of the invention

For above defect, the light that the invention provides a kind of injection is relatively concentrated, structure is simple, cost is lower, the lamp box surface brightness uniformity can be made to reach the LED lens of the improved institute application luminaire surface brightness uniformity of 80%, to solve many deficiencies of prior art.

For achieving the above object, the present invention is by the following technical solutions:

Improve LED lens for institute's application luminaire surface brightness uniformity, comprise Rotary-table, described Rotary-table end face directly arranges the some wavy bulge ribs of distribution, the cross section semicircular in shape of each wavy bulge rib; Simultaneously, described Rotary-table longitudinal section is isosceles trapezoid and the angle that the extended line of these trapezoidal two waists intersects is 36 °, fixedly mount base frame bottom this Rotary-table and a cylindrical slotted eye is offered in this base frame bottom surface, the inner both sides of round slot bore are respectively with inclined-plane, one section of location in addition;

Described Rotary-table bottom surface with a circular hole and this circular hole be positioned at Rotary-table inboard inner face on arc-shaped concave is set;

Described Rotary-table end face diameter is 31.1mm, and this end face is 16.56mm to the vertical range on base frame surface.

Correspondingly, the spacing between every two adjacent wavy bulge ribs equals protruding rib cross-sectional diameter.

The some pilot holes of described base frame surface distributed; Described circular hole bore is 7.2mm.

The beneficial effect improving the LED lens of institute's application luminaire surface brightness uniformity of the present invention is:

(1) lighting angle can be made at about 8.6 × 36 °, and the light of injection is more concentrated, when penetrating identical distance and the existing lens in market to compare spot center brightness high by more than 50%;

(2) the lamp box surface brightness uniformity can be made to reach more than 80% with the lamp bar that these lens are made.

Accompanying drawing explanation

With reference to the accompanying drawings the present invention is described in further detail below.

Fig. 1 is the perspective view of the LED lens that can improve institute's application luminaire surface brightness uniformity described in the embodiment of the present invention;

Fig. 2 is the schematic top plan view of the LED lens that can improve institute's application luminaire surface brightness uniformity described in the embodiment of the present invention;

Fig. 3 is the elevational schematic view of the LED lens that can improve institute's application luminaire surface brightness uniformity described in the embodiment of the present invention;

Fig. 4 is the side schematic view of the LED lens that can improve institute's application luminaire surface brightness uniformity described in the embodiment of the present invention;

Fig. 5 be Fig. 2 A-A to generalized section.

In figure:

1, Rotary-table; 2, wavy bulge rib; 3, base frame; 4, arc-shaped concave; 5, pilot hole; 6, inclined-plane is located; 7, circular hole; 8, cylindrical slotted eye.

Detailed description of the invention

embodiment 1

As Figure 1-5, the LED lens of the improved institute application luminaire surface brightness uniformity described in the embodiment of the present invention, comprise Rotary-table 1, described Rotary-table 1 end face directly arranges the some wavy bulge ribs 2 of distribution, the cross section semicircular in shape of each wavy bulge rib 2 and spacing between every two adjacent wavy bulge ribs 2 is protruding rib cross-sectional diameter; Simultaneously, described Rotary-table 1 longitudinal section is isosceles trapezoid and the angle that the extended line of these trapezoidal two waists intersects is 36 °, fixedly mount base frame 3 bottom this Rotary-table 1 and a cylindrical slotted eye 8 is offered in this base frame 3 bottom surface, in addition the inner both sides of round slot bore 8 respectively with inclined-plane 6, one section of location so that be conducive to the location of light fixture;

Correspondingly, described Rotary-table 1 bottom surface with a circular hole 7 and this circular hole 7 be positioned at Rotary-table 1 inboard inner face on arc-shaped concave 4 is set, the some pilot holes 5 of described base frame 3 surface distributed;

Correspondingly, described Rotary-table 1 end face diameter is 31.1mm, and this end face is 16.56mm to the vertical range on base frame 3 surface, and described circular hole 7 bore is 7.2mm, thus is conducive to making the light of injection more concentrated.

embodiment 2

As Figure 1-5, the LED lens of the improved institute application luminaire surface brightness uniformity described in the embodiment of the present invention, comprise Rotary-table 1, described Rotary-table 1 end face directly arranges the some wavy bulge ribs 2 of distribution, the cross section semicircular in shape of each wavy bulge rib 2;

Correspondingly, described Rotary-table 1 bottom surface with a circular hole 7 and this circular hole 7 be positioned at Rotary-table 1 inboard inner face on arc-shaped concave 4 is set, the some pilot holes 5 of described base frame 3 surface distributed.

embodiment 3

As Figure 1-5, the LED lens of the improved institute application luminaire surface brightness uniformity described in the embodiment of the present invention, its structure can be improved to, and comprises Rotary-table 1, described Rotary-table 1 end face directly arranges the some wavy bulge ribs 2 of distribution, the cross section semicircular in shape of each wavy bulge rib 2; Meanwhile, described Rotary-table 1 longitudinal section is isosceles trapezoid and the angle that the extended line of these trapezoidal two waists intersects is 36 °, fixedly mounts base frame 3 and a cylindrical slotted eye 8 is offered in this base frame 3 bottom surface bottom this Rotary-table 1;

Correspondingly, described Rotary-table 1 bottom surface with a circular hole 7 and this circular hole 7 be positioned at Rotary-table 1 inboard inner face on arc-shaped concave 4 is set;

Correspondingly, described Rotary-table 1 end face diameter is 31.1mm, and described circular hole 7 bore is 7.2mm.

The above-mentioned description to embodiment can understand and apply this case technology for the ease of those skilled in the art, person skilled in the art obviously can make various amendment to these examples easily, and General Principle described herein is applied in other embodiment and need not through performing creative labour.Therefore, this case is not limited to above embodiment, and those skilled in the art is according to the announcement of this case, and the improvement made for this case and amendment all should in the protection domains of this case.

Claims

1. can improve LED lens for institute's application luminaire surface brightness uniformity, comprise Rotary-table (1), it is characterized in that:

Described Rotary-table (1) end face directly arranges the some wavy bulge ribs (2) of distribution, the cross section semicircular in shape of each wavy bulge rib (2); Simultaneously, described Rotary-table (1) longitudinal section is isosceles trapezoid and the angle that the extended line of these trapezoidal two waists intersects is 36 °, this Rotary-table (1) bottom fixedly mounts base frame (3) and a cylindrical slotted eye (8) is offered in this base frame (3) bottom surface, and round slot bore (8) inner both sides are respectively with one section of inclined-plane, location (6) in addition;

Described Rotary-table (1) bottom surface with a circular hole (7) and this circular hole (7) be positioned on the inboard inner face of Rotary-table (1) arc-shaped concave (4) be set;

Described Rotary-table (1) end face diameter is 31.1mm, and this end face is 16.56mm to the vertical range on base frame (3) surface.

2. the LED lens improving institute's application luminaire surface brightness uniformity according to claim 1, is characterized in that: the spacing between every two adjacent wavy bulge ribs (2) equals protruding rib cross-sectional diameter.

3. the LED lens improving institute's application luminaire surface brightness uniformity according to claim 1, is characterized in that: the some pilot holes of described base frame (3) surface distributed (5).

4. the LED lens improving institute's application luminaire surface brightness uniformity according to claim 1, is characterized in that: described circular hole (7) bore is 7.2mm.