Title:
LAMP FOR DRAWING
Document Type and Number:
WIPO Patent Application WO/2023/022069
Kind Code:
A1
Abstract:
The present invention implements, in a lamp for drawing that is configured to form a light distribution pattern for drawing, a configuration capable of forming a clear light distribution pattern for drawing. A light-blocking plate 40 for blocking part of light traveling from a light-emitting element 20 to a projection lens 30 is disposed between the light-emitting element 20 and the projection lens 30, and an opening 42 penetrating the light-blocking plate 40 is formed in a required region thereof. This makes it possible to form the light distribution pattern for drawing as a light distribution pattern corresponding to an opening shape of the opening 42. In this case, an inner peripheral surface 42a of the opening 42 is configured to have a surface shape formed such that light emitted from a light emission center of the light-emitting element 20 does not enter the projection lens 30. Consequently, even if the plate thickness of the light-blocking plate 40 is increased to such an extent that the opening shape of the opening 42 is not easily deformed, the occurrence of color unevenness in a contour part of the light distribution pattern for drawing by light reflection on the inner peripheral surface 42a of the opening 42 is effectively suppressed.
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Inventors:
KOBAYASHI NORIHIKO (JP)
Application Number:
PCT/JP2022/030408
Publication Date:
February 23, 2023
Filing Date:
August 09, 2022
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
F21V11/08; F21S43/14; F21S43/31; F21S43/40; F21W103/60; F21Y115/10
Domestic Patent References:
| WO2017164328A1 | 2017-09-28 |
Foreign References:
| US20100226144A1 | 2010-09-09 | |||
| US20130063951A1 | 2013-03-14 | |||
| JP2021512466A | 2021-05-13 | |||
| JP2014189198A | 2014-10-06 | |||
| JP2021134923A | 2021-09-13 |
Attorney, Agent or Firm:
FUJIOKA, Takahiro (JP)
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