CN219655927U

CN219655927U - Remote zoom laser lighting system

Info

Publication number: CN219655927U
Application number: CN202320563084.4U
Authority: CN
Inventors: 王静; 黄胜弟; 吴玉堂; 王坚; 王劲
Original assignee: Nanjing Wavelength Optoelectronics Technology Co Ltd
Current assignee: Nanjing Wavelength Optoelectronics Technology Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-09-08
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses a remote zoom laser lighting system, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the incidence direction of light rays; the first lens, the second lens and the seventh lens are biconvex positive lenses, the third lens and the fourth lens are biconcave negative lenses, the fifth lens is a meniscus positive lens, and the sixth lens is a plano-concave negative lens. The remote zooming laser lighting system can realize continuous zooming function of focal length from 4.5mm to 100mm, and can realize spot lighting with the size of 60cm in the range of 45 meters to 1000 meters.

Description

Remote zoom laser lighting system

Technical Field

The utility model relates to a remote zooming laser lighting system, and belongs to the technical field of laser lighting.

Background

The application of laser illumination is very widespread, such as stage laser lamps, laser aerial imaging, etc. Laser lighting technology is becoming an integral part of life. The laser has the characteristics of high brightness, high directivity and the like, and can be spread in the air.

At present, the distance of laser illumination is limited, and clear illumination is difficult to realize after the distance exceeds a certain range. Therefore, the utility model provides a remote zoom laser lighting system which can realize clear lighting of laser within the range of 45 meters to 1000 meters.

Disclosure of Invention

The utility model provides a long-distance zooming laser lighting system, which is used for lighting uniform round light spots with the range of 60cm, and can be remotely transmitted in air, wherein the transmission distance is 45 meters to 1000 meters; spot illumination of 60cm size can be achieved by a zoom system in the range of 45 meters to 1000 meters.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a remote zoom laser lighting system comprises a laser light source, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the incidence direction of light rays; the first lens, the second lens and the seventh lens are biconvex positive lenses, the third lens and the fourth lens are biconcave negative lenses, the fifth lens is a meniscus positive lens, and the sixth lens is a plano-concave negative lens.

In order to realize the zoom function, the first lens, the second lens, and the third lens are defined as a first lens group, the fourth lens is defined as a second lens group, and the fifth lens, the sixth lens, and the seventh lens are defined as a third lens group; the first lens group and the second lens group are movable groups, the third lens group is a fixed group, and the zooming function can be realized through the movement of the first lens group and the second lens group.

The distance from the laser light source to the first lens group is changed within the range of 2.5-8 mm, the distance between the first lens group and the second lens group is changed within the range of 32-53 mm, and the distance between the second lens group and the third lens group is changed within the range of 4-30 mm.

The laser illumination system can realize a continuous zooming function with a focal length ranging from 4.5mm to 100 mm.

The laser source used in the utility model is a green light source with the wavelength of 525nm plus or minus 7nm, and the light source can emit homogenized circular light spots through a homogenizer. The NA of the laser source is 0.22, and the core diameter is 60um.

In order to further improve the illumination effect, the center thickness of the first lens is 1.6+ -0.02 mm, the center thickness of the second lens is 1.5+ -0.02 mm, the center thickness of the third lens is 1.1+ -0.02 mm, the center thickness of the fourth lens is 2+ -0.02 mm, the center thickness of the fifth lens is 6.5+ -0.02 mm, the center thickness of the sixth lens is 3+ -0.02 mm, and the center thickness of the seventh lens is 8.5+ -0.02 mm.

In order to further improve the lighting effect, the materials of the first lens, the second lens, the fifth lens and the seventh lens are H-ZPK5; the third lens and the sixth lens are made of H-ZF39; the fourth lens is made of ZF6.

In order to further improve the illumination effect, the curvature radius of the incident surface of the first lens is 14.03+/-0.02 mm, and the curvature radius of the emergent surface of the first lens is-5.6+/-0.02 mm; the curvature radius of the incident surface of the second lens is 7.94 plus or minus 0.02mm, and the curvature radius of the emergent surface of the second lens is-24.45 plus or minus 0.02mm; the radius of curvature of the incident surface of the third lens is-4.91+/-0.02 mm, and the radius of curvature of the emergent surface of the third lens is 54.64 +/-0.02 mm; the curvature radius of the incident surface of the fourth lens is-28.82+/-0.02 mm, and the curvature radius of the emergent surface of the fourth lens is 55.59 +/-0.02 mm; the curvature radius of the incident surface of the fifth lens is-173.9 +/-0.02 mm, and the curvature radius of the emergent surface of the fifth lens is-40+/-0.02 mm; the radius of curvature of the incident surface of the sixth lens is infinity, and the radius of curvature of the emergent surface of the sixth lens is 81.1 plus or minus 0.02mm; the radius of curvature of the incident surface of the seventh lens is 82.33 plus or minus 0.02mm, and the radius of curvature of the emergent surface of the seventh lens is-68.88 plus or minus 0.02mm. Along the incident direction of the light, the two sides of the first lens are a first lens incident surface and a first lens emergent surface in sequence, and the other lenses are similar.

The technology not mentioned in the present utility model refers to the prior art.

The remote zooming laser lighting system can realize continuous zooming function of focal length from 4.5mm to 100mm, and can realize spot lighting with the size of 60cm in the range of 45 meters to 1000 meters.

Drawings

Fig. 1 is a schematic diagram of a remote zoom laser illumination system of the present utility model, f=4.5 mm;

fig. 2 is a schematic diagram of a tele-zoomed laser illumination system of the present utility model, f=52 mm;

fig. 3 is a schematic diagram of a tele-zoomed laser illumination system of the present utility model, f=100 mm;

FIG. 4 shows the measured spots of the remote zoom laser illumination system of the present utility model at 45m, 500m, 1000 m;

in the figure, 1 is a first lens, 2 is a second lens, 3 is a third lens, 4 is a fourth lens, 5 is a fifth lens, 6 is a sixth lens, and 7 is a seventh lens.

Detailed Description

For a better understanding of the present utility model, the following examples are further illustrated, but are not limited to the following examples.

As shown in fig. 1-3: a remote zoom lighting system comprises a laser light source, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the incidence direction of light rays; the first lens, the second lens and the seventh lens are biconvex positive lenses, the third lens and the fourth lens are biconcave negative lenses, the fifth lens is a meniscus positive lens, and the sixth lens is a plano-concave negative lens. The radius of curvature of the first lens incident surface S1 is 14.03mm, and the radius of curvature of the first lens emergent surface S2 is-5.6 mm; the radius of curvature of the second lens incident surface S3 is 7.94mm, and the radius of curvature of the second lens emergent surface S4 is-24.45 mm; the radius of curvature of the third lens incidence surface S5 is-4.91 mm, and the radius of curvature of the third lens emergence surface S6 is 54.64mm; the curvature radius of the incident surface S7 of the fourth lens is-28.82 mm, and the curvature radius of the emergent surface S8 of the fourth lens is 55.59mm; the curvature radius of the fifth lens incidence surface S9 is-173.9 mm, and the curvature radius of the fifth lens emergence surface S10 is-40 mm; the radius of curvature of the sixth lens entrance surface S11 is infinity, and the radius of curvature of the sixth lens exit surface S12 is 81.1mm; the radius of curvature of the seventh-lens entrance surface S13 is 82.33mm, and the radius of curvature of the seventh-lens exit surface S14 is-68.88 mm. The optical parameters of each lens are shown in table 1.

Table 1 optical parameters of each lens

The first lens, the second lens and the third lens are regarded as a whole, and are defined as a first lens group; defining a fourth lens as a second lens group; the fifth lens, the sixth lens and the seventh lens are regarded as a whole, and are defined as a lens group three. The first lens group and the second lens group are moving groups, and the third lens group is a fixed group. The zooming function can be realized by the movement of the first lens group and the second lens group. As shown in fig. 1-3, the zoom distances between the lens groups are as follows.

Zoom distance between lens groups

The laser source is a green light source with the wavelength of 525nm, and the light spots at different working distances such as 4.5 meters, 500 meters and 1000 meters can be 60cm through the zooming function. As shown in FIG. 4, after the long-distance zooming laser illumination system, light spots with the light spot size of about 60cm can be obtained at positions of 4.5 meters, 500 meters and 1000 meters.

Claims

1. A remote zoom laser illumination system, characterized by: the lens comprises a laser light source, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the incidence direction of light rays; the first lens, the second lens and the seventh lens are biconvex positive lenses, the third lens and the fourth lens are biconcave negative lenses, the fifth lens is a meniscus positive lens, and the sixth lens is a plano-concave negative lens.

2. The tele-zoomed laser illumination system of claim 1, wherein: defining a first lens, a second lens and a third lens as a first lens group, defining a fourth lens as a second lens group, and defining a fifth lens, a sixth lens and a seventh lens as a third lens group; the first lens group and the second lens group are moving groups, the third lens group is a fixed group, and zooming is realized through movement of the first lens group and the second lens group.

3. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: the range of the distance between the laser light source and the first lens group is 2.5-8 mm, the range of the distance between the first lens group and the second lens group is 32-53 mm, and the range of the distance between the second lens group and the third lens group is 4-30 mm.

4. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: a continuous zoom of the focal length from 4.5mm to 100mm is achieved.

5. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: the laser source is a green light source of 525nm + -7 nm.

6. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: the center thickness of the first lens is 1.6 + -0.02 mm, the center thickness of the second lens is 1.5 + -0.02 mm, the center thickness of the third lens is 1.1 + -0.02 mm, the center thickness of the fourth lens is 2 + -0.02 mm, the center thickness of the fifth lens is 6.5 + -0.02 mm, the center thickness of the sixth lens is 3 + -0.02 mm, and the center thickness of the seventh lens is 8.5 + -0.02 mm.

7. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: the first lens, the second lens, the fifth lens and the seventh lens are all made of H-ZPK5; the third lens and the sixth lens are made of H-ZF39; the fourth lens is made of ZF6.

8. A tele-zoomed laser illumination system as claimed in claim 1 or 2, characterized in that: the radius of curvature of the incident surface of the first lens is 14.03+/-0.02 mm, and the radius of curvature of the emergent surface of the first lens is-5.6+/-0.02 mm; the curvature radius of the incident surface of the second lens is 7.94 plus or minus 0.02mm, and the curvature radius of the emergent surface of the second lens is-24.45 plus or minus 0.02mm; the radius of curvature of the incident surface of the third lens is-4.91+/-0.02 mm, and the radius of curvature of the emergent surface of the third lens is 54.64 +/-0.02 mm; the curvature radius of the incident surface of the fourth lens is-28.82+/-0.02 mm, and the curvature radius of the emergent surface of the fourth lens is 55.59 +/-0.02 mm; the curvature radius of the incident surface of the fifth lens is-173.9 +/-0.02 mm, and the curvature radius of the emergent surface of the fifth lens is-40+/-0.02 mm; the radius of curvature of the incident surface of the sixth lens is infinity, and the radius of curvature of the emergent surface of the sixth lens is 81.1 plus or minus 0.02mm; the radius of curvature of the incident surface of the seventh lens is 82.33 plus or minus 0.02mm, and the radius of curvature of the emergent surface of the seventh lens is-68.88 plus or minus 0.02mm.