CN211014994U

CN211014994U - Laser projection high reflection device

Info

Publication number: CN211014994U
Application number: CN202020022805.7U
Authority: CN
Inventors: 杨明政
Original assignee: Zhongshan Xingsheng Optical Hardware Co ltd
Current assignee: Zhongshan Xingsheng Optical Hardware Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-07-14
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a laser projection high reflection device, which comprises a light source, a color wheel component, a reflector, a shaping lens and an emergent lens; the reflecting mirror comprises a receiving surface and a reflecting area, the receiving surface and incident light rays emitted by the color wheel assembly are obliquely arranged, and the reflecting area is U-shaped and comprises a plurality of reflecting surfaces which are symmetrically arranged and located on different planes. The utility model discloses a plurality of bending face structures that are located different planes that the plane of reflection set up for the symmetry are different from traditional plane of reflection at the coplanar, and the effect that sets up like this is through reflecting incident light in different regions, superposes again through plastic lens at last together, has effectively reduced because the light scattering of incident optic fibre department and reflection department, further increase the border sharpening effect of projection imaging figure. Meanwhile, the symmetrically arranged reflecting surfaces can effectively reduce the projection ratio, so that a larger projection image can be obtained in the process of close-range projection.

Description

Laser projection high reflection device

Technical Field

The utility model relates to a projection equipment technical field, more specifically relates to a laser projection high reflection apparatus.

Background

With the rapid development of projection technology and science and technology, the projection industry has gradually developed the field of micro projection technology besides the large projection instruments frequently seen in daily life, and the traditional huge projector is exquisite, portable, entertaining and practical. Because the projection ratio of the micro-projection equipment is large, the projection distance is large when a 20-inch picture is projected, and the experience of a customer is affected greatly. The arrangement of the micro-projection device in a limited space becomes very difficult, and the projection picture is small due to the large projection distance, so that the user cannot have the best user experience when watching the projection picture.

The ordinary light source comprising L ED emits light in all directions, and the emitted light is transmitted in one direction, and some light-gathering unit is required to make the light emitted in one direction converge and emit in one direction.

Although the brightness of the existing laser projection device is improved, scattered light is easy to generate at an incident optical fiber or a reflection position, and the scattered light affects the definition of an image and the visual experience of a user, especially the blurring of the edge of a graph in the image has a great influence on the imaging quality. Moreover, the projection ratio of the laser projection device is not changed, and the laser projection device is not suitable for projection imaging at a short distance, for example, advertisements projected at the rear windshield of a taxi need a large space to project a large image, or the definition of the image is abandoned, and projection imaging is performed at a short distance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to above-mentioned defect and not enough, provide a figure edge is clear, sharpen the boundary, throw the little laser projection high reflection apparatus of ratio.

In order to achieve the above object, the utility model discloses a specific technical scheme be:

the utility model discloses a laser projection high reflection device, which comprises a light source, a color wheel component, a reflector, a shaping lens and an emergent lens; the color wheel assembly and the light source are arranged on the same horizontal height basically, the reflecting mirror comprises a receiving surface and a reflecting area, the receiving surface and incident light rays emitted by the color wheel assembly are obliquely arranged, and the reflecting area is U-shaped and comprises a plurality of reflecting surfaces which are symmetrically arranged and positioned on different planes; the shaping lens is arranged behind the reflector and used for integrating emergent rays of the reflector, and the emergent lens is arranged behind the shaping lens and used for projecting images.

In order to facilitate installation, the reflector further comprises a shell arranged on the outer side of the reflecting area, and installation lugs are arranged on two sides of the shell.

In order to increase the strength of the housing and reduce the weight, the housing is made of Polycarbonate (PC).

In order to facilitate disassembly, the mounting lug is provided with a threaded mounting hole.

In order to achieve a better reflection effect and further enhance the edge sharpening effect of a projected image, the reflection surface comprises a first reflection surface, a second reflection surface and a third reflection surface; the distances from one ends, far away from the receiving surface, of the first reflecting surface, the second reflecting surface and the third reflecting surface to the central point of the receiving surface are sequentially increased by 2mm and 3 mm.

In order to keep the reflecting surface clean, a waterproof coating is arranged on the reflecting surface, and the dripping angle of the waterproof coating is not lower than 110 degrees.

In order to adjust the size of the projected image conveniently, the emergent lens comprises a fixed cylinder and a telescopic cylinder, and the telescopic cylinder is connected with the shaping lens. The telescopic cylinder can be connected with the fixed cylinder in a threaded connection mode and is connected with the shaping lens through a connecting screw rod. When the projected image needs to be adjusted, the telescopic cylinder is rotated to move back and forth, and at the moment, the lead screw drives the shaping lens to move back and forth, so that the adjustment of the image is realized.

In order to achieve a better reflection effect, the receiving surface and incident light rays emitted by the color wheel assembly are obliquely arranged at an angle of 30-60 degrees.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a plurality of bending face structures that are located different planes that the plane of reflection set up for the symmetry are different from traditional plane of reflection at the coplanar, and the effect that sets up like this is through reflecting incident light in different regions, superposes again through plastic lens at last together, has effectively reduced because the light scattering of incident optic fibre department and reflection department, further increase the border sharpening effect of projection imaging figure. Meanwhile, the symmetrically arranged reflecting surfaces can effectively reduce the projection ratio, so that a larger projection image can be obtained in the process of close-range projection.

The present invention will be further described with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the overall structure of the device according to the preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a reflector according to a preferred embodiment of the present invention.

Fig. 3 is a schematic perspective view of a shaping lens and an exit lens according to a preferred embodiment of the present invention.

Fig. 4 is a schematic side view of a shaping lens and an exit lens according to a preferred embodiment of the present invention.

Description of reference numerals:

1 a light source,

2 color wheel component,

3 reflector, 31 receiving surface, 32 reflecting region, 33 shell, 321 reflecting surface, 331 installing ear, 3311 screw installing hole, 3211 first reflecting surface, 3212 second reflecting surface, 3213 third reflecting surface,

4 a shaping lens,

5 exit lens, 51 fixed cylinder, 52 telescopic cylinder.

Detailed Description

The present invention is further explained and illustrated by the following embodiments, it should be understood that the following embodiments are for the purpose of making the technical solution of the present invention clearer and easier to understand, and do not limit the scope of the claims.

As shown in fig. 1, the laser projection high reflection apparatus according to the present embodiment includes a light source 1, a color wheel assembly 2, a reflector 3, a shaping lens 4, and an exit lens 5; the color wheel assembly 2 and the light source 1 are arranged on the same horizontal height, the reflector 3 comprises a receiving surface 31 and a reflecting area 32, the receiving surface 31 and incident light rays emitted by the color wheel assembly 2 are obliquely arranged, and the reflecting area 32 is U-shaped and comprises a plurality of reflecting surfaces 321 which are symmetrically arranged and are positioned on different planes; the shaping lens 4 is arranged behind the reflector 3 and used for integrating emergent light rays of the reflector 3, and the emergent lens 5 is arranged behind the shaping lens 4 and used for projecting images.

As shown in fig. 1 to 2, in a preferred embodiment, for convenience of installation, the reflector 3 further includes a housing 33 disposed outside the reflection region 32, and mounting ears 331 are disposed on both sides of the housing 33. in order to increase the strength of the housing and reduce the weight of the housing, the housing 33 is made of PC material, for convenience of detachment, a threaded mounting hole 3311 is disposed on the mounting ear 331. in order to achieve better reflection effect and further enhance the edge sharpening effect of the projected image, the reflection surface 321 includes a first reflection surface 3211, a second reflection surface 3212, and a third reflection surface 3213, the distances from the end of the first reflection surface 3211, the second reflection surface 3212, and the third reflection surface 3213 far away from the receiving surface 31 to the center point of the receiving surface 31 are sequentially increased by 2mm and 3mm, specifically, L1 is 60mm, L2 is 62mm, L3 is 65mm, and the housing 33 is further designed in a size L3 mm to 75mm, and the reflection surface 321 is provided with a waterproof coating film having a water-proof angle not lower than 110 °.

As shown in fig. 3 to 4, in a preferred embodiment, in order to adjust the size of the projected image, the exit lens 5 includes a fixed cylinder 51 and a telescopic cylinder 52, and the telescopic cylinder 52 is connected to a shaping lens. The telescopic cylinder 52 can be connected with the fixed cylinder 51 in a threaded manner and connected with the shaping lens 4 through a connecting screw rod. When the projected image needs to be adjusted, the telescopic cylinder 52 is rotated to move back and forth, and at the moment, the lead screw drives the shaping lens 4 to move back and forth, so that the image is adjusted.

In a preferred embodiment, as shown in fig. 1, the receiving surface 31 is inclined at an angle of 30 to 60 ° with respect to the incident light from the color wheel assembly 2 for better reflection.

the utility model discloses a plurality of bending face structures that are located different planes that plane 321 set up for the symmetry are different from traditional plane of reflection and are a whole plane, and the effect that sets up like this is through reflecting incident light in different regions, superposes again through plastic lens at last together, has effectively reduced because the light scattering of incident optical fiber department and reflection department, further increase the border sharpening effect of projection imaging graph. Meanwhile, the symmetrically arranged reflecting surfaces 321 can effectively reduce the projection ratio, so that a larger projection image can be obtained in the short-distance projection.

The working principle of the utility model is as follows:

firstly, a laser light source 1 emits laser light, the laser light enters a color wheel assembly 2, then the color wheel assembly 2 introduces the light into a reflector 3, a first imaging emergent light ray is formed through a first reflecting surface 3211, a second imaging emergent light ray is formed through a second reflecting surface 3212, a third imaging emergent light ray is formed through a third reflecting surface 3213, the light rays enter a shaping lens 4 and are integrated into a final emergent light ray in a superposition mode, and finally, the final emergent light ray is projected and imaged through an emergent lens 5.

The present invention has been described in terms of embodiments, but not limitations, and other variations of the disclosed embodiments, as would be readily apparent to one skilled in the art, are intended to be included within the scope of the present invention as defined in the following claims, in view of the description of the present invention.

Claims

1. A laser projection high reflection device is characterized in that: the color wheel device comprises a light source (1), a color wheel component (2), a reflector (3), a shaping lens (4) and an emergent lens (5); the color wheel assembly (2) and the light source (1) are arranged on the same horizontal height basically, the reflector (3) comprises a receiving surface (31) and a reflecting area (32), the receiving surface (31) and incident light rays emitted by the color wheel assembly (2) are obliquely arranged, and the reflecting area (32) is U-shaped and comprises a plurality of reflecting surfaces (321) which are symmetrically arranged and located on different planes; the shaping lens (4) is arranged behind the reflector (3) and used for integrating emergent rays of the reflector (3), and the emergent lens (5) is arranged behind the shaping lens (4) and used for projecting images.

2. The laser projection high reflection apparatus of claim 1, wherein: the reflector (3) further comprises a shell (33) arranged on the outer side of the reflecting area (32), and mounting ears (331) are arranged on two sides of the shell (33).

3. The laser projection high reflection apparatus of claim 2, wherein: the shell (33) is made of polycarbonate.

4. The laser projection high reflection apparatus of claim 2, wherein: and a threaded mounting hole (3311) is formed in the mounting lug (331).

5. The laser projection high reflection apparatus of claim 1, wherein: the reflecting surface (321) comprises a first reflecting surface (3211), a second reflecting surface (3212) and a third reflecting surface (3213); the distances from one end of the first reflecting surface (3211), the second reflecting surface (3212) and the third reflecting surface (3213), which is far away from the receiving surface (31), to the center point of the receiving surface (31) are increased by 2mm and 3mm in sequence.

6. The laser projection high reflection device of claim 1 or 5, wherein: the reflecting surface (321) is provided with a waterproof coating, and the dripping angle of the waterproof coating is not lower than 110 degrees.

7. The laser projection high reflection apparatus of claim 1, wherein: the emergent lens (5) comprises a fixed cylinder (51) and a telescopic cylinder (52), and the telescopic cylinder (52) is connected with the shaping lens.

8. The laser projection high reflection apparatus of claim 1, wherein: the receiving surface (31) and incident light rays emitted by the color wheel assembly (2) are obliquely arranged at an angle of 30-60 degrees.