F21W2102/16

LENS FOR LIGHTING DEVICE FOR MOTOR VEHICLES
20170254496 · 2017-09-07 · ·

Lens for a lighting device of a motor vehicle includes a rear face designed to be oriented toward a light source of the lighting device, and a convex front face designed to be oriented toward the roadway being illuminated. The lens has a median vertical plane designed to be substantially orthogonal to the roadway, the front face having a first zone of diffusion with microstructures adapted to diffuse the light emitted by the light source, the first zone of diffusion extending in the median vertical plane. The front face furthermore includes at least two second zones of diffusion each one having microstructures adapted to diffuse the light emitted by the light source, the two second zones of diffusion being situated on either side of the median vertical plane. The microstructures of the two zones of diffusion have a depth absolutely greater than the depth of the microstructures of the first zone of diffusion.

Light Unit for a Motor Vehicle Headlamp
20210388960 · 2021-12-16 ·

The invention relates to a lamp unit (100) for a motor-vehicle lighting device, comprising: a dipped-beam module (101), a main-beam module (102), an imaging optical element (103, 503) connected downstream of the dipped-beam module (101) and the main-beam module (102), having an optical axis (104, 204, 404, 504) and a focal surface (116) orientated normal to the optical axis (104, 204, 404, 504), and a diaphragm (105, 405), which has a diaphragm edge (106, 206, 306) and extends essentially up to the focal surface (116) of the imaging optical element (103, 503) for generating the horizontal cut-off line in a light image generated by the lamp unit (100), wherein the diaphragm (105, 405) has an opaque diaphragm region (107, 407) and has a transparent diaphragm region (108, 408) with a geometric structure (109, 409) made from a transparent material at the diaphragm edge (106, 206, 306) in the region of the focal surface (116), the geometric structure (109, 409) has at least one prism body (110, 210, 310, 410, 510) with a triangular cross-sectional area, which is elongated and the longitudinal extent runs substantially transversely to the optical axis (104, 204, 404), the at least one prism body (110, 210, 310, 410, 510) has a first, a second and a third prism surface, the second prism surface (112, 212, 312, 512) encloses an internal angle α1≥θ with the first prism surface (111, 211, 311), and the third prism surface (113, 213, 313, 513) encloses an internal angle α2≥θ with the first prism surface (111, 211, 311), wherein θ is the critical angle of total internal reflection of the transparent material, the internal angles α1 and α2 are the same or different, and with the proviso that the internal angle α1 or the internal angle α2 is not 45°.

LAMP FOR VEHICLE
20220205603 · 2022-06-30 ·

A vehicle lamp includes a first lamp unit for forming a first region of a beam pattern, and a second lamp unit for forming a second region of the beam pattern. The first lamp unit and the second lamp unit are arranged in a left-right direction. Each of the first lamp unit and the second lamp unit includes a plurality of lamp modules arranged in the left-right direction, each of the plurality of lamp modules including a light source unit including a light source and a light path adjusting unit. A position of light irradiation region formed by the light emitted from each of the plurality of lamp modules is particularly configured depending on a position of the light source with respect to a rear focal point of the light path adjusting unit.

AUTOMOTIVE LAMP OPTICAL SYSTEM WITH LIGHT DIFFUSIVE PROJECTION LENS
20220170606 · 2022-06-02 · ·

The present invention relates to an automotive optical system; the optical system includes one or more first optical elements that reflect light rays emitted from a number of first light sources that are configured to perform a first lighting function and a second optical element; the second optical element is configured to project a light beam from the first optical elements configured to perform the first lighting function where a portion of the second optical element is made of a diffusive material. Furthermore, the optical system includes a number of secondary light sources where the second optical element is configured to receive light ray emissions from the secondary light sources and perform a second lighting function by scattering light rays received from secondary light sources.

Automotive lamp optical system with light diffusive projection lens
11761602 · 2023-09-19 · ·

The present invention relates to an automotive optical system; the optical system includes one or more first optical elements that reflect light rays emitted from a number of first light sources that are configured to perform a first lighting function and a second optical element; the second optical element is configured to project a light beam from the first optical elements configured to perform the first lighting function where a portion of the second optical element is made of a diffusive material. Furthermore, the optical system includes a number of secondary light sources where the second optical element is configured to receive light ray emissions from the secondary light sources and perform a second lighting function by scattering light rays received from secondary light sources.

Vehicular lamp fitting

A vehicular lamp fitting comprising a front lens body, a rear lens unit, and a light source that emits light, which passes through the rear lens unit and the front lens body, to form a low beam light distribution pattern, wherein the rear lens unit is a lens unit configured to condense, in a first direction, the light coming from the light source, and includes a first entry surface, and a first exit surface, the front lens body is a lens unit configured to condense, in a second direction, the light coming from the rear lens unit, and includes a second entry surface, and a second exit surface, the front lens body is disposed in an attitude that is inclined, and a curvature of the first exit surface in the longitudinal section or a curvature of the second entry surface in the longitudinal section is different in each longitudinal section.

Projection Apparatus, Lighting Module and Motor Vehicle Headlamp Consisting of Micro-Optical Systems
20210341122 · 2021-11-04 ·

Disclosed is a projection apparatus (2) for a lighting module (1) of a motor vehicle headlamp, the projection apparatus (2) being formed by a plurality of micro-optical systems (3) that are arranged like a matrix; each micro-optical system (3) includes a micro-input optical element (30), a micro-output optical element (31) associated with the micro-input optical element (30), and a micro-diaphragm (32), all micro-input optical elements (31) forming an input optical unit (4), all micro-output optical elements (31) forming an output optical unit (5), and all micro-diaphragms (32) forming a diaphragm device (6); the diaphragm device (6) is disposed in a plane extending substantially perpendicularly to the main direction of emission (Z) of the projection apparatus (2), while the input optical unit (4), the output optical unit (5) and the diaphragm device (6) are disposed in planes extending substantially parallel to one another; the micro-diaphragm (32) of each micro-optical system (3) has an optically effective edge (320, 320a, 320b, 320c, 320d, 320e), all of the micro-optical systems (3) are subdivided into at least two micro-optical system groups (G1, G2, G3), and the optically effective edges (320, 320a, 320b, 320c, 320d, 320e) in the micro-optical systems (3) from different micro-optical system groups (G1, G2, G3) are positioned differently relative to the associated micro-output optical elements (31) within the intermediate image plane.

Lighting Device for a Motor Vehicle Headlamp
20230358385 · 2023-11-09 ·

Illumination device (10) for a motor vehicle headlight, which comprises the following: a first light module (100) for producing light distribution, a bulb shield (300) having a bulb shield (300), which comprises an optically relevant shield edge (310) for producing a cut-off line, a projection lens (400) with an optical axis (A), which is designed to image the light that can be produced by the first light module (100) in front of the illumination device (10), wherein the projection lens (400) is designed as a Fresnel lens, which Fresnel lens has a base body (410) and several annular steps (420) arranged on the base body (410), wherein each step (420) has a main surface (420a) to project the light beams of the at least one light module (100) in front of the illumination device (10) and a sloping surface (420b) extending from the base body (410) to the main surface (420a), wherein the main surface of each step is curved and has a focal point, which focal point is arranged horizontally and/or vertically displaced from the optical axis of the Fresnel lens, and wherein adjacent steps have different focal points from one another.

Method for correcting a light pattern and automotive lighting device
11435052 · 2022-09-06 · ·

A method for correcting a light pattern provided by an automotive lighting device, wherein the light pattern is provided at least by a matrix arrangement of light sources. The method includes a first step of projecting a high beam pattern with a first zone where luminous intensity is lower, the first zone having a rectangular edge with four sides. The second step includes providing a number of pixels for each of the four sides of the edge of the first zone, thus creating an upper blur zone, a lower blur zone, a left blur zone and a right blur zone. A final step includes creating a blur pattern for the upper blur zone which extends along columns, a blur pattern for the lower blur zone which extends along columns, a blur pattern for the left blur zone which extends along rows and a blur pattern for the right blur zone which extend along rows, where the luminous intensity in each row or column adapts from the luminous intensity of the first zone to the luminous intensity of the high beam pattern. An automotive lighting device configured to perform these steps is also provided.

Projection apparatus, lighting module and motor vehicle headlamp consisting of micro-optical systems

Disclosed is a projection apparatus (2) for a lighting module (1) of a motor vehicle headlamp, the projection apparatus (2) being formed by a plurality of micro-optical systems (3) that are arranged like a matrix; each micro-optical system (3) includes a micro-input optical element (30), a micro-output optical element (31) associated with the micro-input optical element (30), and a micro-diaphragm (32), all micro-input optical elements (31) forming an input optical unit (4), all micro-output optical elements (31) forming an output optical unit (5), and all micro-diaphragms (32) forming a diaphragm device (6); the diaphragm device (6) is disposed in a plane extending substantially perpendicularly to the main direction of emission (Z) of the projection apparatus (2), while the input optical unit (4), the output optical unit (5) and the diaphragm device (6) are disposed in planes extending substantially parallel to one another; the micro-diaphragm (32) of each micro-optical system (3) has an optically effective edge (320, 320a, 320b, 320c, 320d, 320e), all of the micro-optical systems (3) are subdivided into at least two micro-optical system groups (G1, G2, G3), and the optically effective edges (320, 320a, 320b, 320c, 320d, 320e) in the micro-optical systems (3) from different micro-optical system groups (G1, G2, G3) are positioned differently relative to the associated micro-output optical elements (31) within the intermediate image plane.