# US 11,999,295 B2 · Vehicle lamp system for drawing road surface pattern

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- Number: US 11,999,295 B2
- Document ID: US11999295B2
- Status: Granted
- Kind: B2
- Application number: 17/885,997
- Filed: 2022-08-11
- Published: 2022-12-01
- Granted: 2024-06-04
- Earliest claimed: 2020-02-17
- Assignees: Koito Manufacturing Co., Ltd.
- Applicants: Koito Manufacturing Co., Ltd.
- Inventors: Naoki Tatara
- Web page: https://patentgrep.com/patent/US11999295B2

## CPC

- B60Q 9/00: Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 {, e.g. haptic signalling}
- B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
- B60K 35/231: characterised by their arrangement or structure for integration into vehicles
- B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
- B60K 35/81: for controlling displays
- B60Q 1/34: for indicating change of drive direction (B60Q1/22 takes precedence)
- B60Q 1/50: for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q 1/507: {specific to autonomous vehicles}
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- B60K 2360/166: Navigation
- B60K 2360/177: Augmented reality
- B60K 2360/178: Warnings
- B60K 2360/334: Projection means
- B60K 2360/797: at the vehicle exterior
- B60Q 2400/50: Projected symbol or information, e.g. onto the road or car body
- G02B 2027/0141: {characterised by the informative content of the display}
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A lamp system includes a road surface drawing lamp that illuminates a road surface with a beam BM, and a lamp controlling unit that controls the road surface drawing lamp and draws, with the beam BM, a pattern PTN on the road surface ahead of a vehicle. The lamp controlling unit draws a first pattern before a start of a predetermined event and draws a second pattern at the start of the event. The first pattern includes first information to be presented in advance to a driver to allow the driver to respond to the event, and the second pattern includes second information corresponding to the event.

## Claims

### Claim 1

A lamp system, comprising:
a road surface drawing lamp that illuminates a road surface with a beam; and
a lamp controlling unit that controls the road surface drawing lamp and draws, with the beam, a pattern on the road surface ahead of a vehicle, wherein
the lamp controlling unit draws a first pattern before a start of a predetermined event determined to occur and draws a second pattern at the start of the event, the first pattern including first information to be presented in advance to a driver to allow the driver to respond to the event, the second pattern including second information corresponding to the event, wherein
the predetermined event is narrowing of a road ahead,
the first information is an instruction to slow down, and
the second information is a width of the vehicle.

### Claim 2

A lamp system, comprising:
a road surface drawing lamp that illuminates a road surface with a beam; and
a lamp controlling unit that controls the road surface drawing lamp and draws, with the beam, a pattern on the road surface ahead of a vehicle, wherein
the lamp controlling unit draws a first pattern before a start of a predetermined event determined to occur and draws a second pattern at the start of the event, the first pattern including first information to be presented in advance to a driver to allow the driver to respond to the event, the second pattern including second information corresponding to the event, wherein
the predetermined event is a change in a traveling direction,
the first information is an instruction to slow down, and
the second information is an instruction to change the traveling direction.