F21S41/68

Headlight device

A headlight device includes a light source, a base member, a light distribution formation member, a rotary member, a projection lens and a transmission mechanism. The base member holds the light source. The light distribution formation member forms a light distribution pattern. The rotary member holds the light distribution formation member and is held by the base member to be rotatable. The projection lens is held by the rotary member to be rotatable around a rotation axis orthogonal to a rotation axis. The transmission mechanism includes a transmission member for transmitting a rotation amount of the rotary member with respect to the base member to the projection lens and rotates the projection lens according to the rotation of the rotary member with respect to the base member.

Vehicle lighting fixture
09869443 · 2018-01-16 · ·

A vehicle lighting fixture can include a plurality of light sources; a plurality of optical deflectors provided to correspond to the light sources, the optical deflector configured to include a mirror part; a screen member configured to form a luminance distribution assigned to each optical deflector with the scanning light by the mirror part of the optical deflector; an optical system configured to project the luminance distributions on the screen member to thereby form a predetermined light distribution pattern; a changing unit configured to change the luminance distribution assigned to each of the optical deflectors; and a control unit configured to control the light sources and the optical deflectors so that the optical deflectors each can form the respective luminance distributions assigned to the respective optical deflectors on the screen member. The changing unit can change the respective luminance distributions assigned to the respective optical deflectors at a prescribed timing.

Vehicle lamp
09714747 · 2017-07-25 · ·

A vehicle lamp includes a projection lens and a first light source. Light emitted from the first light source is irradiated forward through the projection lens. The shade blocks a part of light from the first light source toward the projection lens to form a low beam light distribution pattern. The light emitting unit causes light to be incident onto the projection lens to form a high beam supplementary light distribution pattern. The light emitting unit includes a second light source and a transparent member. Light emitted from the second light source is incident on the transparent member. The transparent member emits the incident light from the front end surface thereof. An emission window is formed in the upper surface of the transparent member and in rear of a front edge of the upper surface. The emission window emits the light incident onto the transparent member, toward the projection lens.

Vehicle lamp and method of manufacturing the same
09709236 · 2017-07-18 · ·

A vehicle lamp includes a light source including a semiconductor light emitting device, and a metal support member on which the light source is mounted. The support member is integrally formed with a shade portion configured to block a portion of light emitted from the semiconductor light emitting device.

Common cavity lighting assembly using auto shading

Aspects of the disclosure include lighting assemblies and methods of using the same that leverage auto-shading laminates to support a common cavity for mixed lighting applications. An exemplary vehicle includes a lighting assembly having a common cavity. The common cavity includes an outer lens coated with an auto-shading film, a primary light source positioned behind the outer lens, a secondary light source positioned on an edge of the outer lens, and a wire embedded in the auto-shading film. The auto-shading film includes discrete substructures which vary in alignment in response to an electric field, thereby varying a transmittance through the outer lens. A controller is electrically coupled to the wire. The controller is configured to direct a switching voltage to a switch to change a state of the switch, thereby causing the wire to deliver the electric field to the discrete substructures to change the transmittance of the auto-shading film.

Common cavity lighting assembly using auto shading

Aspects of the disclosure include lighting assemblies and methods of using the same that leverage auto-shading laminates to support a common cavity for mixed lighting applications. An exemplary vehicle includes a lighting assembly having a common cavity. The common cavity includes an outer lens coated with an auto-shading film, a primary light source positioned behind the outer lens, a secondary light source positioned on an edge of the outer lens, and a wire embedded in the auto-shading film. The auto-shading film includes discrete substructures which vary in alignment in response to an electric field, thereby varying a transmittance through the outer lens. A controller is electrically coupled to the wire. The controller is configured to direct a switching voltage to a switch to change a state of the switch, thereby causing the wire to deliver the electric field to the discrete substructures to change the transmittance of the auto-shading film.

Lighting device for a motor vehicle headlight

Illumination device (10) for a motor vehicle headlight for producing segmented full beam distribution (FL), wherein the illumination device (10) comprises the following for this purpose: an optical element (100), comprising light guiding bodies (200) for forming the definable segment full beam distribution (FL), which light guiding bodies (200) respectively have a light entry surface (210) and an exit surface (220), projection optics (300) arranged downstream of the beam path of the optical element (100) having an optical axis (A), which projection optics (300) are designed to project the light exiting from the common exit surface (200a) in front of the illumination device (10) in the direction of a main emission direction (X), and wherein each light guiding body (200) has two lateral side surfaces (230a, 230b) and an upper and a lower side surface (240a, 240b), wherein the optical element (100) has a first and a second light emission half (L1, L2), which can be delimited from one another by a virtual vertical plane (VE), wherein the first light guiding body (200a) of the first light emission half (L1) helps produce the first maximum illuminance (M1), and wherein the first light guiding body (200b) of the second light emission half (L2) helps produce the second maximum illuminance (M2), wherein the surface centre (FM2) of the entry surface (210) has a horizontal offset (H-off) and a downwards vertical offset (V-off) to the surface centre (FM1) of the associated exit surface (220), and wherein the lateral side surface (230a) of these first light guiding bodies (200a, 200b), which faces away from the virtual vertical plane (VE), is convex and combined with the offset of the entry surfaces (210) is designed to direct light from the corresponding light source (50) in the direction of the optical axis (A) in order to increase the illuminance between the first and the second maximum illuminance (M1, M2) in the full beam distribution (FL) such that the intersection HV of an aiming screen is arranged within the isolux line for 80% of the maximum illuminance of the full beam distribution (FL).

Lighting device for a motor vehicle headlight

Illumination device (10) for a motor vehicle headlight for producing segmented full beam distribution (FL), wherein the illumination device (10) comprises the following for this purpose: an optical element (100), comprising light guiding bodies (200) for forming the definable segment full beam distribution (FL), which light guiding bodies (200) respectively have a light entry surface (210) and an exit surface (220), projection optics (300) arranged downstream of the beam path of the optical element (100) having an optical axis (A), which projection optics (300) are designed to project the light exiting from the common exit surface (200a) in front of the illumination device (10) in the direction of a main emission direction (X), and wherein each light guiding body (200) has two lateral side surfaces (230a, 230b) and an upper and a lower side surface (240a, 240b), wherein the optical element (100) has a first and a second light emission half (L1, L2), which can be delimited from one another by a virtual vertical plane (VE), wherein the first light guiding body (200a) of the first light emission half (L1) helps produce the first maximum illuminance (M1), and wherein the first light guiding body (200b) of the second light emission half (L2) helps produce the second maximum illuminance (M2), wherein the surface centre (FM2) of the entry surface (210) has a horizontal offset (H-off) and a downwards vertical offset (V-off) to the surface centre (FM1) of the associated exit surface (220), and wherein the lateral side surface (230a) of these first light guiding bodies (200a, 200b), which faces away from the virtual vertical plane (VE), is convex and combined with the offset of the entry surfaces (210) is designed to direct light from the corresponding light source (50) in the direction of the optical axis (A) in order to increase the illuminance between the first and the second maximum illuminance (M1, M2) in the full beam distribution (FL) such that the intersection HV of an aiming screen is arranged within the isolux line for 80% of the maximum illuminance of the full beam distribution (FL).