CN214504106U - Laser projection device for automobile and automobile adopting same - Google Patents

Abstract

The utility model discloses a laser projection device for car includes in proper order according to the direction of light path: a laser to generate a light beam; a collimating lens: a divergence angle for converging the laser beam; a vibrating mirror: deflecting the light beam after passing through the collimating lens to scan an image; an imaging lens: and enlarging the image generated by the galvanometer into a real image to be projected on the ground. An automobile adopts foretell laser projection device. The utility model has the advantages that: the laser is used as a light source, so that the brightness is strong, and the generated picture can be seen in the day and at night. The laser projection device is applied to the automobile, the warning effect on pedestrians and vehicles is obvious, the pedestrians and the vehicles can see prompt information at the safe distance from the vehicle with the laser projection, corresponding avoidance is made in advance according to the front projection prompt, and blind spots existing in the driving process are eliminated.

Description

Laser projection device for automobile and automobile adopting same

Technical Field

The utility model relates to a laser projection device and adopt device's car for car.

Background

The safety of pedestrians and vehicles needs to be considered in the driving process of the automobile, for example, in some pure electric new energy automobiles, the sound is very light in the driving process, the pure electric new energy automobiles are not easy to be found by pedestrians or vehicles in the front, on a road section with large pedestrian flow, especially under the condition that old people or children exist, pedestrians can be scared by means of whistle reminding, and in addition, the whistle is forbidden on some urban roads, so that a driver cannot conveniently remind the pedestrians in the front of to pay attention to the safety.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser projection device and adopt device's car for car can effectively solve current car and can not effectual warning passerby's problem of paying attention to safety under the condition that does not whistle.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a laser projection device for an automobile sequentially comprises the following components in the direction of a light path:

a laser to generate a light beam;

a collimating lens: a divergence angle for converging the laser beam;

a vibrating mirror: deflecting the light beam after passing through the collimating lens to scan an image;

an imaging lens: and enlarging the image generated by the galvanometer into a real image to be projected on the ground.

Preferably, the imaging lens is one of a transmission fresnel lens, a binary diffractive surface lens, a transmission spherical mirror, a transmission aspheric lens, or a transmission free-form surface lens.

Preferably, the imaging lens is one of a reflective fresnel lens, a reflective binary diffractive surface lens, a reflective spherical mirror, a reflective aspherical mirror, a reflective free-form surface lens or a reflective multi-combination lens group.

Preferably, the optical distance from the galvanometer to the imaging lens is 1-2 times of the focal length of the imaging lens, an amplified real image is displayed on a road surface, a warning effect is better generated, and the size of the whole laser projection device is reduced.

Preferably, the galvanometer is a single two-dimensional scanning galvanometer, and light rays emitted by the point light source can be scanned to form a two-dimensional image.

Preferably, the galvanometer is a plurality of two-dimensional scanning galvanometers, and a three-dimensional image is formed by combining the plurality of two-dimensional scanning galvanometers.

An automobile adopts foretell laser projection device.

Preferably, the laser projection device is fixed on the lower portion of a front bumper of the vehicle, and the position of the best projection warning image is not easy to block.

Compared with the prior art, the utility model has the advantages that: the laser is adopted as a light source, the brightness is high, the generated picture can be seen in the daytime and at night, the laser is beneficial to reducing the size of the light source part, the generated light converges the divergence angle of the light beam through the collimating lens, the light beam is deflected through the galvanometer to scan an image, and then the warning pattern is presented on the road surface through the imaging lens.

The laser projection device is applied to the automobile, the warning effect on pedestrians and vehicles is obvious, the pedestrians and the vehicles can see prompt information at the safe distance from the vehicle with the laser projection, corresponding avoidance is made in advance according to the front projection prompt, and blind spots existing in the driving process are eliminated.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a laser projection apparatus for an automobile according to the present invention;

FIG. 2 is a schematic view of the imaging of FIG. 1;

fig. 3 is a schematic structural diagram of a second embodiment of the laser projection apparatus for an automobile according to the present invention;

fig. 4 is an imaging schematic of fig. 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The first embodiment is as follows:

referring to fig. 1 and fig. 2, the present invention provides an embodiment of a laser projection device for an automobile, which comprises in sequence according to the light path direction: the laser 1: generating a light beam; collimator lens 2: the divergence angle of the light beam emitted by the convergent laser 1; the galvanometer 3: deflecting the light beam to scan out an image; imaging lens 4: the image generated by the galvanometer 3 is magnified to be a real image 5 and projected on the ground. The light source adopts the laser 1, can produce higher luminance, can see the pattern that throws clearly in daytime, as the pointolite simultaneously, its volume is also relatively less, be favorable to miniaturizing whole device, the light that the laser 1 sent turns into the parallel light into behind collimating lens 2, galvanometer 3 in this embodiment adopts two-dimensional scanning galvanometer 3, according to the settlement in advance, the parallel light passes through galvanometer 3 and forms the image, the image that adopts single two-dimensional scanning galvanometer 3 to become two-dimensional plane image, also can adopt a plurality of two-dimensional scanning galvanometer 3 combinations, form three-dimensional image.

The imaging lens 4 may be one of a transmission fresnel lens, a binary diffractive surface lens, a transmission spherical mirror, a transmission aspheric lens or a transmission free-form surface lens, so that the finally presented image, the imaging lens 4 and the collimating lens 2 are on the same straight line.

In order to present a larger image to warn pedestrians and vehicles with a smaller light source, the optical distance from the galvanometer 3 to the imaging lens 4 is between 1 and 2 times the focal length of the imaging lens 4, so that a magnified real image 5 is obtained.

The laser 1 is adopted as a light source and has stronger brightness, the generated picture can be seen in the daytime and at night, the laser 1 is beneficial to reducing the size of the light source part, the generated light converges the divergence angle of the light beam through the collimating lens 2, the light beam is deflected through the vibrating mirror 3 to scan an image, and then the warning pattern is presented on the road surface through the imaging lens 4.

Example two:

referring to fig. 3 and 4, the difference from the first embodiment is that the imaging lens 4 is one of a reflective fresnel lens, a reflective binary diffractive surface lens, a reflective spherical mirror, a reflective aspherical mirror, a reflective free-form surface lens, or a reflective multi-combination lens set, and since the reflective mode is adopted, the overall layout of the imaging lens is different from that of the imaging lens 4 in the first embodiment, and another layout mode is provided, so that different sizes of the laser head device can be formed, and more choices are provided for users. Meanwhile, the angle of the imaging lens 4 can be adjusted by the reflective imaging lens 4, so that the pattern position projected to the road surface is adjusted, and the best warning pattern can be displayed by different vehicle types.

EXAMPLE III

In the automobile adopting the laser projection device in the first embodiment and the second embodiment, the laser projection device is fixed at the lower part of the front bumper of the automobile by using bolts and is connected with the automobile control system, the switch of the laser projection device can be controlled by the automobile control system, and the projected warning content can be set. Therefore, the warning pattern is formed in front of the vehicle, and pedestrians and vehicles in front are prompted, so that driving safety is ensured.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims (8)

1. A laser projection device for an automobile is characterized in that: sequentially comprises the following components in the direction of the light path:

a laser (1) generating a light beam;

collimator lens (2): a divergence angle for converging the light beam emitted by the laser (1);

galvanometer (3): deflecting the light beam passing through the collimating lens (2) to scan an image;

imaging lens (4): the image generated by the galvanometer (3) is enlarged into a real image and projected on the ground.

2. A laser projection apparatus for an automobile as claimed in claim 1, wherein: the imaging lens (4) is one of a transmission type Fresnel lens, a binary diffraction surface lens, a transmission type spherical mirror, a transmission type non-spherical lens or a transmission type free-form surface lens.

3. A laser projection apparatus for an automobile as claimed in claim 1, wherein: the imaging lens (4) is one of a reflective Fresnel lens, a reflective binary diffraction surface lens, a reflective spherical mirror, a reflective aspherical mirror, a reflective free-form surface lens or a reflective multi-combination lens group.

4. A laser projection apparatus for an automobile as claimed in claim 1, wherein: the optical distance between the galvanometer (3) and the imaging lens (4) is between 1 and 2 times of the focal length of the imaging lens (4).

5. A laser projection apparatus for an automobile as claimed in claim 1, wherein: the galvanometer (3) is a single two-dimensional scanning galvanometer (3).

6. A laser projection apparatus for an automobile as claimed in claim 1, wherein: the galvanometer (3) is a plurality of two-dimensional scanning galvanometers (3).

7. An automobile, characterized in that: the laser projection apparatus according to any one of claims 1 to 6 is used.

8. An automobile as claimed in claim 7, wherein: the laser projection device is fixed on the lower portion of a front bumper of the vehicle.

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