Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/32—Optical layout thereof
  • F21S41/322—Optical layout thereof the reflector using total internal reflection
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
  • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
  • F21S41/141—Light emitting diodes [LED]
  • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
  • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
  • F21S41/24—Light guides
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
  • F21S41/25—Projection lenses
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
  • F21S41/25—Projection lenses
  • F21S41/26—Elongated lenses
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/32—Optical layout thereof
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
  • F21W2102/10—Arrangement or contour of the emitted light
  • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
  • F21W2102/10—Arrangement or contour of the emitted light
  • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
  • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
  • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
  • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
  • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

• a lighting apparatus for achieving the lighting function of a vehicle lamp is typically provided with an optical element having a collimation function to obtain approximately parallel emitted light rays, thereby achieving a better lighting effect.
• the primary reflection surface is a total reflection surface or a reflective mirror surface having a reflective layer.
• the lighting apparatus further includes a primary reflector having the primary reflection surface, wherein the primary reflector is located between the light source and the optical lens, and the primary reflector is configured to reflect light rays emitted by the light source to the light-incidence surface of the optical lens.
• the lighting apparatus further includes a cut-off line structure provided on the light-emitting side of the light source, wherein the cut-off line structure is located at or near a focus of the optical lens, and the cut-off line structure is configured to form a light-emitting pattern with a cut-off line.
• the cut-off line structure is provided at or near a boundary of the primary reflection surface on a side close to the light source.
• a surface shape of the primary reflection surface is a parabolic surface, a quasi-parabolic surface, an ellipsoidal surface, or a quasi-ellipsoidal surface.
• light rays emitted by the light source 220 enter the optical lens 100 through the light-incidence surface 110 of the optical lens 100 and propagate to the first total reflection surface 120.
• the first total reflection surface 120 not only performs collimation on the incident light rays in the first direction but also enables a total reflection of the incident light rays at the first total reflection surface 120. This reduces light loss.
• the light rays emitted by the light source 220 After undergoing total reflection at the first total reflection surface 120, the light rays emitted by the light source 220 propagate to the light-emitting surface 130, and then the light-emitting surface 130 performs collimation on the light rays in the second direction. Consequently, after collimation in both the first direction and the second direction, the light rays emitted by the light source 220 are ultimately emitted from the light-emitting surface 130, thereby forming a light-emitting pattern of the lighting apparatus 10.
• a circuit board 210 carrying the light source 220 can also be provided.
• a heat sink 200 can also be arranged on the side of the circuit board 210 that is away from light source 220. In this way, the heat sink 200 effectively dissipates heat from the light source 220.
• the present disclosure imposes no limitation on the type of light source 220, the structure of heat sink 200, or the material thereof.
• the light path of the light rays emitted by the light source 220 when the lighting apparatus 10 operates in the embodiment is illustrated as follows (not shown in the figure).
• the light source 220 emits the light rays and the light rays are incident on the primary reflector. Under the reflection effect of the primary reflector, the light rays are incident on the light-incidence surface 110 of the optical lens 100 and propagate to the first total reflection surface 120. After total reflection and unidirectional collimation occur at first total reflection surface 120, the light rays propagate to light-emitting surface 130, and then the light rays are subjected to unidirectional collimation in another direction by the light-emitting surface 130, and then emitted to form the light-emitting pattern of the lighting apparatus 10. Therefore, approximately parallel emitted light rays are obtained, achieving a better illumination effect.
• At least one second total reflection surface 160 can also be provided inside the optical lens 100, which can modify the light path inside the optical lens 100, thereby enabling the optical lens 100 to have a specific external shape that meets the arrangement requirements of other components.
• a surface shape of the primary reflection surface 150 of the primary reflector can be a parabolic surface, a quasi-parabolic surface, an ellipsoidal surface, or a quasi-ellipsoidal surface.
• the quasi-parabolic surface refers to a curved surface approximating a parabolic surface
• the quasi-ellipsoidal surface refers to a curved surface approximating an ellipsoidal surface, where they have similar optical performance.
• the primary reflection surface 150 By means of the primary reflection surface 150, the light rays of the light source 220 can be subjected to primary modulation, such that the light rays of the light source 220 reflected by the primary reflection surface 150 can be irradiated onto the first total reflection surface 120 or the second total reflection surface 160 as nearly parallel light rays, thereby improving the illumination effect of the lighting apparatus 10.
• the primary reflector can integrate a cut-off line structure 140, meaning that the cut-off line structure 140 is integrally provided with the primary reflector.
• the cut-off line structure 140 is provided at the boundary of the primary reflection surface 150 of the primary reflector on the side close to the light source 220 or near the boundary.
• the cut-off line structure 140 can correspondingly enable the light-emitting pattern of the lighting apparatus 10 to have a cut-off line, thereby conforming to light pattern standards.
• the cut-off line structure 140 can be located at the focus of the optical lens 100. For example, as shown in FIGS.
• the cut-off line structure 140 can be arranged at the point or near the point, so that when light rays from the light source 220 are projected onto the cut-off line structure 140, an image is formed and emitted through the optical lens 100 so as to form an image on the light distribution screen, i.e., the formation of the light-dark cut-off line of the light-emitting pattern.
• the lighting apparatus 10 in the present disclosure can include a low-beam module 12 for forming a low-beam light pattern. As shown in FIGS. 5 to 15 , the lighting apparatus 10 can be configured to form a low-beam light pattern. Of course, the lighting apparatus 10 in the present disclosure can also include a high-beam module 11 for forming a high-beam light pattern. As shown in FIGS. 5 to 15 , the lighting apparatus 10 can be configured to form a high-beam light pattern. Alternatively, the lighting apparatus 10 in the present disclosure can include both a low-beam module 12 for forming a low-beam light pattern and a high-beam module 11 for forming a high-beam light pattern. For example, as shown in FIG.
• a dashed line in FIG. 16 is a boundary (where the boundary is a virtual line, included only for ease of understanding and does not exist in the actual structure).
• the structure above the boundary can be the high-beam module 11, which is configured for forming a high-beam light pattern.
• the structure below the boundary can be the low-beam module 12, which is configured for forming a low-beam light pattern.
• the low-beam module 12 and the high-beam module 11 can be arranged separately or integrally. For example, as shown in FIG.
• the present disclosure provides a lighting apparatus and a vehicle lamp.
• An optical lens in the illumination device is improved, such that the optical lens has a first total reflection surface.
• the first total reflection surface can be used to replace a light-incidence surface in an existing optical lens to realize unidirectional collimation and total reflection of light rays emitted from a light source, so that the position of a light-incidence surface of the optical lens can be changed while the illumination effect is ensured, and components provided for cooperating with the optical lens can also be arranged in other directions perpendicular to a front-rear direction instead of being arranged in the front-rear direction, thereby preventing the illumination device from being too large in the front-rear direction, and reducing the limitation on the arrangement of the illumination device.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Optics & Photonics (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=91880242

Family Applications (1)

Country Status (3)

Cited By (1)

Family Cites Families (13)

• 2023
  • 2023-01-11 CN CN202310063850.5A patent/CN118361683A/zh active Pending
  • 2023-09-05 EP EP23915600.3A patent/EP4585853A4/fr active Pending
  • 2023-09-05 WO PCT/CN2023/116983 patent/WO2024148842A1/fr not_active Ceased

Also Published As

Similar Documents

Legal Events