CN214954352U

CN214954352U - UVLED area light source optical structure

Info

Publication number: CN214954352U
Application number: CN202120980737.XU
Authority: CN
Inventors: 李家永; 罗浩
Original assignee: Shenzhen Wei Hai Li Xin Technology Development Co ltd
Current assignee: Shenzhen Wei Hai Li Xin Technology Development Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-11-30
Anticipated expiration: 2031-05-08

Abstract

The utility model discloses a UVLED area source optical structure, including UVLED area source, UVLED area source includes a plurality of little exit angle's UVLED lamp pearl, the light-emitting side of UVLED area source is provided with first convex lens, second convex lens and fly's eye lens respectively, UVLED area source with the interval of first convex lens is 90 ~ 110mm, first convex lens with the interval of second convex lens is 15 ~ 25mm, the second convex lens with the interval of fly's eye lens is 140 ~ 160 mm. The utility model discloses technical scheme improves current optical structure, realizes the illumination requirement of large tracts of land, remote, high degree of consistency.

Description

UVLED area light source optical structure

Technical Field

The utility model relates to a UVLED light source technical field, in particular to UVLED area light source optical structure.

Background

With the continuous development of the application of the UVLED area light source, the requirement for large-area and long-distance irradiation is more and more, for example, in the field of UV exposure of 3D glass, the requirement for the uniformity of the light spot in the field is generally higher, for example, more than 85%, which further increases the difficulty of optical design. The method comprises the following steps: irradiation distance 1000mm, irradiation area:

luminous cone angle<30 degrees of uniformity>85 percent. However, the conventional optical structure cannot satisfy the above requirements.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a UVLED area source optical structure aims at improving current optical structure, realizes the illumination requirement of large tracts of land, remote, high degree of consistency.

In order to realize the above-mentioned purpose, the utility model provides a UVLED area light source optical structure, including UVLED area light source, UVLED area light source includes a plurality of little exit angles's UVLED lamp pearl, the light-emitting side of UVLED area light source is provided with first convex lens, second convex lens and fly's eye lens respectively, UVLED area light source with first convex lens's interval is 90 ~ 110mm, first convex lens with the interval of second convex lens is 15 ~ 25mm, the second convex lens with fly's eye lens's interval is 140 ~ 160 mm.

Preferably, the emergent angle of the UVLED lamp bead is set to be 45-60 degrees.

Preferably, the distance between the UVLED surface light source and the first convex lens is 100mm, the distance between the first convex lens and the second convex lens is 20mm, and the distance between the second convex lens and the fly eye lens is 150 mm.

Preferably, the first convex lens and the second convex lens have the same structure, and the diameter of the first convex lens and the diameter of the second convex lens are set to be 150mm, the radius of the convex surface is set to be 151.1mm, the radius of the concave surface is set to be 577.8mm, and the edge width is set to be 9.96 mm.

Preferably, the fly-eye lens is configured as a double-row fly-eye lens structure, any row of fly-eye lenses includes a plurality of small unit lenses arranged in a 20X20 array, and the size of any small unit lens is 70 × 70 mm.

Preferably, the fly-eye lens edge thickness is set to 18mm, and the convex radius of any one of the small-unit lenses is set to 6 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the light-emitting cone angle is small, and the irradiation distance is long;

2. the fly-eye lens is adopted for optical design, so that the uniformity of light spots is good;

3. the whole optical design is novel, and the effect is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of the optical structure of the present invention;

FIG. 2 is a schematic view of the convex lens structure of the present invention;

fig. 3 is a schematic view of a fly-eye lens structure of the present invention;

FIG. 4 is an optical simulation diagram of the spot of the irradiated surface 1000mm away from the UVLED area light source;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

Reference figure 1 shows that a UVLED area light source optical structure that this embodiment provided, including UVLED area light source 1, UVLED area light source 1 includes a plurality of little exit angle's UVLED lamp pearl, the light-emitting side of UVLED area light source 1 is provided with first convex lens 21, second convex lens 22 and fly eye lens 3 respectively, UVLED area light source 1 with the interval of first convex lens 21 is 90 ~ 110mm, first convex lens 21 with the interval of second convex lens 22 is 15 ~ 25mm, second convex lens 22 with the interval of fly eye lens 3 is 140 ~ 160 mm.

Further, the emergent angle of the UVLED lamp bead is set to be 45-60 degrees. It should be noted that there are two exit angles of the existing UVLED lamp bead, the small angle is 45 ° to 60 °, and the large angle is generally 120 °, so according to the technical problem to be solved in this embodiment, the UVLED lamp bead with the small exit angle is selected.

Further, when the two columns of lens arrays are arranged in parallel, the fly-eye lens 3 array has a good light uniformizing effect, and referring to fig. 4, the light uniformizing principle is as follows: the optical axes of two rows of corresponding small unit lenses are mutually parallel, the distance between the arrays is just the focal length of the small unit lenses, then the condenser lens is placed behind the second row of small unit lens arrays, the focal plane is placed on the illuminating surface, and thus parallel light beams collimated by the collimating lens are focused on the central position of the second row of corresponding small unit lenses after being transmitted by the first row of small unit lens arrays; the first row of small unit lens array has the function of dividing the lighting source into small unit lens area light beams, light nonuniformity in the area does not exist because the light nonuniformity is focused to the center of the corresponding small unit lens, the small unit lenses in the rear row act, the corresponding small unit lenses in the first row are overlapped and imaged and then are focused on the lighting surface through the condenser lens, and therefore all points in the light spot area on the lighting surface are irradiated by light emitted by all points of the light source, meanwhile, light beams emitted by all points of the light source are received on the lighting surface, and therefore lighting light spots in specific shapes are formed.

Further, in this embodiment, the distance between the UVLED surface light source 1 and the first convex lens 21 is 100mm, the distance between the first convex lens 21 and the second convex lens 22 is 20mm, and the distance between the second convex lens 22 and the fly eye lens 3 is 150 mm.

Further, referring to fig. 2, the first convex lens 21 and the second convex lens 22 are identical in structure, and the first convex lens 21 and the second convex lens 22 are set to have a diameter of 150mm, a convex radius a of 151.1mm, a concave radius B of 577.8mm, and an edge width H1 of 9.96 mm.

Further, referring to fig. 3, the fly-eye lens 3 is configured as a double-row fly-eye lens structure, where any row of fly-eye lenses includes a plurality of small unit lenses arranged in a 20X20 array, and the size of any small unit lens is 70 × 70 mm.

Further, the edge thickness H2 of the fly-eye lens 3 was set to 18mm, and the convex radius C of any of the small-element lenses was set to 6 mm.

In this embodiment, emergent light from the UVLED surface light source 1 is processed by two convex lenses, the light enters the fly eye lens 3 at an acute angle, and each small unit lens in the fly eye lens 3 overlaps the light to form a specific light spot, and the specific light spot is formed at a cone angle<Emitting 30 degrees to the irradiated surface to form

Circular uniformly illuminated spots.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a UVLED area light source optical structure, its characterized in that, includes UVLED area light source, UVLED area light source includes a plurality of little exit angle's UVLED lamp pearl, the light-emitting side of UVLED area light source is provided with first convex lens, second convex lens and fly eye lens respectively, UVLED area light source with first convex lens's interval is 90 ~ 110mm, first convex lens with the interval of second convex lens is 15 ~ 25mm, second convex lens with fly eye lens's interval is 140 ~ 160 mm.

2. The optical structure of a UVLED area light source of claim 1, wherein the exit angle of said UVLED lamp beads is set to 45 ° -60 °.

3. The optical structure of a UVLED surface light source of claim 1, wherein said UVLED surface light source is spaced apart from said first convex lens by 100mm, said first convex lens is spaced apart from said second convex lens by 20mm, and said second convex lens is spaced apart from said fly's eye lens by 150 mm.

4. A UVLED area light source optical structure as set forth in claim 1, wherein the first and second convex lenses are identical in structure, and the first and second convex lenses have a diameter set to 150mm, a convex radius set to 151.1mm, a concave radius set to 577.8mm, and an edge width set to 9.96 mm.

5. An optical structure of a UVLED area light source as claimed in claim 1, wherein said fly eye lens is configured as a double row fly eye lens structure, any row of fly eye lens includes a plurality of small unit lenses arranged in 20X20 array, and the size of any small unit lens is 70X 70 mm.

6. An optical structure of a UVLED area light source as set forth in claim 5, wherein a thickness of an edge of said fly eye lens is set to 18mm, and a radius of a convex surface of any one of said small unit lenses is set to 6 mm.