US 2026/0202034 A1Published application

Vehicle lamp

AssigneeIchikoh Industries, Ltd.

InventorsYasuhiro OKUBO, Toshiya ABE

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Abstract

A vehicle lamp includes a light source, a light source-side lens, a meta-surface portion, a light-blocking member including a slit, and a projecting lens. The meta-surface portion includes a plurality of pillar portions provided at a predetermined pitch in a first direction parallel to the longitudinal direction of the slit and in a second direction perpendicular to the first direction with a reference position corresponding to an optical axis of the light source-side lens as a center. The meta-surface portion includes a central region that includes the reference position and includes a portion where the diameters of the pillar portions gradually decrease as a distance from the reference position increases. In the central region, changes in the diameters of the pillar portions are more gradual on one side in the first direction with respect to the reference position than on the other side in the first direction.

Claims23

Dependent claims

A vehicle lamp comprising:

a light source that emits light;
a light source-side lens that has a plate shape, includes a meta-surface portion that converts a wavefront of the light from the light source, and emits the light with a converted wavefront;
a light-blocking member including a slit that allows a part of the light emitted from the light source-side lens to pass through;
and
a projecting lens that irradiates a road surface with the light having passed through the slit to form an irradiation pattern, wherein
the slit is formed to have its longitudinal direction in one direction,
the meta-surface portion includes a plurality of pillar portions that is provided at a predetermined pitch in a first direction parallel to the longitudinal direction of the slit and in a second direction perpendicular to the first direction with a reference position corresponding to an optical axis of the light source-side lens as a center,
the meta-surface portion includes a central region that includes the reference position and includes a portion where diameters of the pillar portions gradually decrease as a distance from the reference position increases, and
in the central region, changes in the diameters of the pillar portions are more gradual on one side in the first direction with respect to the reference position than on the other side in the first direction.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/136,344Filed 11 Dec 2023
Priority: JP 2022-19806812 Dec 2022
Published: 16 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

F21S 43/26231
Characterised by the properties of the light beam shaping surface: collimating, focusing, condensing or projecting beams, e.g. projection lenses…
F21S 43/14
Characterised by the type of light source: light emitting diodes [LED]
F21S 43/19
Characterised by the light source: attachment of light sources or lamp holders
F21S 43/26411
Refractors or refracting portions characterised by their relative arrangement, e.g. parallel refractors: two or more successive refractors