LiDAR integrated lamp device for vehicle
View Patent ↗Disclosed is a Light Detection and Ranging (LiDAR)-integrated lamp device configured for a vehicle. In the included LiDAR-integrated lamp device, the position at which a head lamp is applied and the position at which a LiDAR is applied are identical and then, a reduction in layout is achieved. Furthermore, through sharing of constituent elements, the number of constituent elements is reduced and then, manufacturing costs are reduced.
1. A Light Detection and Ranging (LiDAR)-integrated lamp device for a vehicle, the LiDAR-integrated lamp device including:
a first light source of emitting light for beam patterns;
a second light source spaced from the first light source and of emitting light for LiDAR sensing;
a reflection unit of receiving the light for the beam patterns from the first light source and the light for the LiDAR sensing from the second light source, and configured of varying reflection angles for the light for the beam patterns and the light for the LiDAR sensing to change travel paths of the light for the beam patterns and the light for the LiDAR sensing;
a first reflection mirror of receiving the light for the beam patterns reflected from the reflection unit, while reflecting the light for the beam patterns, and of emitting visible light for the beam patterns outwards of the vehicle;
a second reflection mirror of receiving the light for the LiDAR sensing reflected from the reflection unit, of reflecting the light for the LiDAR sensing, and of emitting the reflected light for the LiDAR sensing outwards of the vehicle;
a first optical system of projecting the light for the beam patterns reflected through the first reflection mirror outwards of the vehicle; and
a second optical system for diffusing the light for the LiDAR sensing reflected through the second reflection mirror outwards of the vehicle,
wherein the reflection unit has a central axis inclined at a first angle from a virtual vertical line,
wherein the second light source is spaced from a connecting line connecting the first light source and the reflection unit by a second angle,
wherein the second reflection mirror includes:
a first reflector mounted to be downwardly spaced apart by the second angle from an optical axis of the light for the beam patterns traveling after being reflected by the reflection unit while being inclined at an angle equal to half of the second angle with respect to the light for the LiDAR sensing traveling after being reflected by the reflection unit; and
a second reflector mounted to receive the light for the LiDAR sensing reflected by the first reflector while being inclined at an angle equal to half of the first angle with respect to a first disposition line of the second reflection mirror and the second optical system.
2. The LiDAR-integrated lamp device according to claim 1 , further including:
a light receiving unit of receiving the light for the LiDAR sensing reflected and returned after being emitted outwards of the vehicle, and of changing the received light for the LiDAR into an electrical signal.
3. The LiDAR-integrated lamp device according to claim 1 ,
wherein plural opaque barriers are mounted at a cross-section of the first reflection mirror and spaced from one another.
4. The LiDAR-integrated lamp device according to claim 1 ,
wherein the reflection unit is a digital micro-mirror device (DMD) including a plurality of micro-mirrors each configured to vary an angle thereof through ON/OFF switching thereof according to a drive signal input thereto, so as to change a travel path of light incident thereupon.
5. The LiDAR-integrated lamp device according to claim 1 ,
wherein the first light source and the second light source are mounted at a side of the reflection unit, and
wherein the second light source is spaced from the connecting line connecting the first light source and the reflection unit.
6. The LiDAR-integrated lamp device according to claim 5 ,
wherein the reflection unit is inclinedly mounted to guide the light for the beam patterns and the light for the LiDAR sensing incident thereupon to travel after being reflected.
7. The LiDAR-integrated lamp device according to claim 6 ,
wherein a connection line between the first reflection mirror and the first optical system is spaced from a connection line between the second reflection mirror and the second optical system.
8. The LiDAR-integrated lamp device according to claim 1 ,
wherein an inclination direction of the central axis is set so that the light for the beam patterns and the light for the LiDAR sensing travel in a direction opposite to a direction in which the light for the beam patterns and the light for the LiDAR sensing are emitted outwards of the vehicle.
9. The LiDAR-integrated lamp device according to claim 8 ,
wherein the first reflection mirror and the first optical system are mounted on a line extending in a direction in which the light for the beam patterns is emitted outwards of the vehicle; and
wherein the first reflection mirror is mounted on an optical axis extending in a direction in which the light for the beam patterns emitted from the first light source travels after being reflected by the reflection unit, and is inclinedly mounted such that the light for the beam patterns incident thereupon travels toward the first optical system.
10. The LiDAR-integrated lamp device according to claim 9 ,
wherein the first reflection mirror is spaced from the central axis of the reflection unit while being is inclined at an angle equal to half of the first angle with respect to a second disposition line of connecting the first reflection mirror and the first optical system.
11. The LiDAR-integrated lamp device according to claim 1 ,
wherein the second reflection mirror and the second optical system are mounted on a line extending in a direction in which the light for the LiDAR sensing is emitted outwards of the vehicle; and
wherein the second reflection mirror is mounted on an optical axis extending in a direction in which the light for the LiDAR sensing emitted from the second light source travels after being reflected by the reflection unit, and is inclinedly mounted such that the light for the LiDAR sensing incident thereupon travels toward the second optical system.
12. The LiDAR-integrated lamp device according to claim 1 ,
wherein the first reflector has a surface curved with respect to the central axis of the reflection unit.
13. The LiDAR-integrated lamp device according to claim 1 , wherein the second optical system includes:
a first diffusion lens for horizontally diffusing the light for the LiDAR sensing traveling after being reflected by the second reflection mirror; and
a second diffusion lens for vertically diffusing the light for the LiDAR sensing horizontally diffused by the first diffusion lens.
14. The LiDAR-integrated lamp device according to claim 1 ,
wherein the first reflection mirror includes a heat dissipation plate attached to a surface of the first reflection mirror.
15. The LiDAR-integrated lamp device according to claim 1 , wherein a diffusion unit is mounted between the reflection unit and the first reflection mirror, to diffuse the light for the beam patterns.