CN211118943U

CN211118943U - Lighting device of virtual object lighting lens

Info

Publication number: CN211118943U
Application number: CN202020008253.4U
Authority: CN
Inventors: 周伟统
Original assignee: Hangzhou Youren Photoelectric Technology Co ltd
Current assignee: Hangzhou Youren Photoelectric Technology Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-07-28
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a lighting device of virtual thing lighting lens, it includes virtual thing lighting lens and beam condensing unit, wherein virtual thing lighting lens is including locating the projection face and going into the lens subassembly of the coaxial setting of a plurality of between the plain noodles, the lens subassembly is first negative lens, second negative lens, third negative lens, two cemented lens, fifth negative lens, the positive lens of sixth from the projection face to the coaxial order of arranging of a plurality of between the plain noodles. The light incident surface coincides with an end surface of the sixth positive lens facing the spotlight. The virtual object lighting lens adopts a virtual object surface design, and the virtual object surface of the lens is arranged between the projection surface and the light incident surface of the lens, so that the distance from a light spot to the light emergent surface of the lens is greatly reduced. The utility model discloses an object space telecentric design, the focus face of spotlight and the coincidence of the object face of this virtual thing lighting lens can disperse the spotlight, throws evenly.

Description

Lighting device of virtual object lighting lens

Technical Field

The utility model belongs to the illumination projection technology in the illumination field, concretely relates to lighting device of virtual thing lighting lens.

Background

The existing projection lamp uses a reflection cup to project light to obtain the illumination effect with high brightness and high uniformity. Generally, a diffusion-type reflector is used to project only a far projection, and when a near projection is projected, a dark spot is clearly seen in the middle of the projected spot. By using the convergent type reflecting cup, the projection spot of the far projection surface can generate obvious dark spot. Thus, continuous uniform bright spots varying with distance cannot be obtained using the reflector cup.

Although the anti-far-distance type projection lens can achieve a good projection effect and can obtain continuous and uniform bright spots changing along with the distance, the distance from the light spots to the light-emitting surface of the objective lens is large, and the volume of the whole illumination projection device is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a lighting device of virtual object lighting lens, this virtual object lighting lens adopt virtual object face design, and the virtual object face of camera lens has reduced the distance from the facula to the camera lens play plain noodles between the income plain noodles of projection face and camera lens by a wide margin. The utility model discloses an object space telecentric design, the focus face of spotlight and the coincidence of the object face of this virtual thing lighting lens can disperse the spotlight, throws evenly.

The utility model discloses a structure be: the utility model provides an illuminator of virtual thing lighting lens, it includes virtual thing lighting lens and beam condensing unit, wherein virtual thing lighting lens is including locating the lens subassembly of a plurality of coaxial settings between plane of projection and income plain noodles, a plurality of coaxial arrangement order of lens subassembly from plane of projection to going into plain noodles is first negative lens, second negative lens, third negative lens, double-cemented lens, fifth negative lens, sixth positive lens. The light incident surface coincides with an end surface of the sixth positive lens facing the spotlight.

Preferably, the object plane of the virtual object illumination lens is a virtual object plane and is located between the projection plane and the light incident plane.

Further, the light condensing device is a lamp composed of a light source and a light condensing cup, and a light condensing surface with a small area is formed at the front end of the light condensing cup.

Further, the virtual object surface of the virtual object lighting lens coincides with the convergence surface of the spotlight.

Further, the focal length of the first negative lens is between-40 mm and-20 mm; the focal length of the second negative lens is between-40 mm and-20 mm; the focal length of the third negative lens is between-40 mm and-20 mm; the focal length of the double cemented lens is between 35mm and 50 mm; the focal length of the fifth negative lens is between-30 mm and-10 mm; the focal length of the sixth positive lens is between 60mm and 100 mm.

Further, the distance between the vertex of the convex surface of the first negative lens and the virtual object surface is less than 15 mm.

The utility model has the advantages that:

1. the utility model discloses a virtual thing lighting lens adopts the design of virtual thing face, and the virtual thing face of camera lens has reduced the distance from facula to the camera lens play plain noodles between the income plain noodles of plane of projection and camera lens by a wide margin. The utility model adopts the telecentric design of the object space, the focus surface of the spotlight is superposed with the object surface of the virtual object lighting lens, so that the converged light can be dispersed and projected uniformly;

2. the utility model discloses a virtual thing lighting lens realizes that it is the real image to make virtual thing amplification with negative focal length lens imaging principle. Selecting a reasonable negative focal length lens group structure as an initial structure according to the structure, adjusting the telecentricity, changing the size of an object plane, and finally achieving the virtual object illumination lens design of object space telecentricity through the optimized design of changing and increasing and decreasing glass materials, focal length zooming and speckle control;

3. the utility model provides a field angle 70 degrees, from the summit of first negative lens convex surface to the distance 13.8mm between the virtual object face, object face circle diameter 6.5mm, F number 1.2's virtual object lighting lens and lighting device. The lens is a lighting device with simple structure and cost control and optimization;

4. the utility model discloses a based on the optical imaging principle, use optical design software to carry out the optimal design that the structural modification reached the diffuse spot to the camera lens repeatedly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a projection surface; 2. a light incident surface; 3. a first negative lens; 4. a second negative lens; 5. a third negative lens; 6. a double cemented lens; 7. a fifth negative lens; 8. a sixth positive lens; 9. a light source; 10. a light focusing cup; 11. a light-gathering device.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings.

From fig. 1 the utility model relates to a lighting device of virtual thing lighting lens, it includes virtual thing lighting lens and beam condensing unit, wherein virtual thing lighting lens is including locating the lens subassembly of the coaxial setting of a plurality of between plane of projection and the income plain noodles, the lens subassembly is first negative lens 3, second negative lens 4, third negative lens 5, two cemented lens 6, fifth negative lens 7, sixth positive lens 8 from plane of projection 1 to the coaxial order of arranging of a plurality of between the income plain noodles 2. The light incident surface coincides with an end surface of the sixth positive lens facing the spotlight.

The lens object plane is a virtual object plane and is arranged between the projection plane and the light incident plane.

The light-gathering device 11 is a lamp composed of a light source 9 and a light-gathering cup 10, and a light-gathering surface with a small area is formed at the front end of the light-gathering cup.

The virtual object surface of the virtual object lighting lens coincides with the convergence surface of the spotlight.

The focal length of the first negative lens is between-40 mm and-20 mm; the focal length of the second negative lens is between-40 mm and-20 mm; the focal length of the third negative lens is between-40 mm and-20 mm; the focal length of the double cemented lens is between 35mm and 50 mm; the focal length of the fifth negative lens is between-30 mm and-10 mm; the focal length of the sixth positive lens is between 60mm and 100 mm.

The distance between the vertex of the convex surface of the first negative lens and the virtual object surface is less than 15 mm.

The curvature radius, material and thickness of each lens and the distance between the lenses are modified to achieve the optimization of the dispersed spots.

The following are parameters that provide embodiments of the virtual object illumination lens optical system of the present invention.

Finally, the virtual object lighting lens and the lighting device with the visual angle of 70 degrees, the distance between the vertex of the convex surface of the first negative lens and the virtual object surface of 13.8mm, the diameter of the object surface circle of 6.5mm and the F number of 1.2 are obtained.

Claims

1. The utility model provides an illuminator of virtual thing lighting lens, its characterized in that, it includes virtual thing lighting lens and beam condensing unit, wherein virtual thing lighting lens is including locating the lens subassembly of a plurality of coaxial setting between plane of projection and income plain noodles, the lens subassembly is first negative lens, second negative lens, third negative lens, double-cemented lens, fifth negative lens, sixth positive lens from a plurality of coaxial arrangement order between plane of projection to going into the plain noodles, the terminal surface coincidence towards the spotlight of going into plain noodles and sixth positive lens.

2. The illumination device of claim 1, wherein: the object plane of the virtual object lighting lens is a virtual object plane and is arranged between the projection plane and the light incident plane.

3. The illumination device of claim 1, wherein: the light-gathering device is a lamp composed of a light source and a light-gathering cup, and a light-gathering surface with a small area is formed at the front end of the light-gathering cup.

4. The illumination device of claim 1, wherein: the virtual object surface of the virtual object lighting lens coincides with the convergence surface of the spotlight.

5. The illumination device of claim 1, wherein:

the focal length of the first negative lens is between-40 mm and-20 mm;

the focal length of the second negative lens is between-40 mm and-20 mm;

the focal length of the third negative lens is between-40 mm and-20 mm;

the focal length of the double cemented lens is between 35mm and 50 mm;

the focal length of the fifth negative lens is between-30 mm and-10 mm;

the focal length of the sixth positive lens is between 60mm and 100 mm.

6. The illumination device of claim 1, wherein: the distance between the vertex of the convex surface of the first negative lens and the virtual object surface is less than 15 mm.