US 12,221,029 B2
DMD lamp and method of controlling DMD lamp
Seong Yeon Han, Osan-si (KR); and Myeong Je Kim, Seoul (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Dec. 26, 2022, as Appl. No. 18/146,411.
Claims priority of application No. 10-2022-0004492 (KR), filed on Jan. 12, 2022.
Prior Publication US 2023/0219486 A1, Jul. 13, 2023
Int. Cl. B60Q 1/14 (2006.01); B60Q 11/00 (2006.01)
CPC B60Q 1/1423 (2013.01) [B60Q 11/005 (2013.01); B60Q 2300/30 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A digital micro-mirror device (DMD) lamp for a mobility device, comprising:
a light source configured to irradiate light;
a DMD module including (1) a plurality of mirrors configured to reflect the light irradiated from the light source to a lens and (2) an angle adjusting unit configured to adjust an angle of at least one of the plurality of mirrors to adjust a target amount of the light reflected to the lens; and
a control unit configured to control the angle adjusting unit and the light source of the DMD module, wherein the control unit is configured to:
receive environmental information; and
calculate, based on the received environmental information, the target amount of the light reflected to the lens and a light transmission ratio at which the DMD module reflects the light irradiated from the light source to the lens,
wherein the environmental information includes at least one of distance information between the mobility device and an external object, access information of the external object, external illuminance information, moving speed information of the mobility device, location information of the mobility device, road information, precipitation information, and road surface information, and
wherein the control unit is configured to:
decrease the target amount of the light in response to the distance information indicating that a distance between the mobility device and the external object has decreased;
decrease the target amount of the light in response to the external illuminance information indicating that an external illuminance has decreased;
decrease the target amount of the light in response to the moving speed information indicating that a speed of the mobility device has decreased; and
set the target amount of the light of the light to a predetermined reference value without decreasing the target amount in response to the precipitation information indicating that a precipitation is greater than zero.