A lamp for a vehicle, the lamp including a light source configured to emit light, and a light guide body provided forward of the light source and configured to allow the light to enter the light guide body, in which the light guide body includes a body portion, the body portion includes a recessed region formed in a lower surface of the body portion and recessed upward, the recessed region includes a first section extending to be inclined upward in a forward direction, and a second section provided forward of the first section and extending forward or downward from the first section, and a material layer configured to reflect or absorb the light is provided on a surface of the second section.

Disclosed is a lamp for a vehicle, the lamp including: a light source; a collimator positioned in front of the light source; and a light guide part, in which the light guide part includes: a light entering portion; a light exiting portion; and a body portion configured to connect the light entering portion and the light exiting portion, in which an optical axis AXI of the light entering portion and an optical axis AXO of the light exiting portion are parallel to each other, and in which the optical axis AXI of the light entering portion is spaced apart upward from the optical axis AXO of the light exiting portion.

A low-beam primary optical element for a vehicle lamp, a vehicle lamp module comprising the low-beam primary optical element, a vehicle lamp, and a vehicle. The low-beam primary optical element comprises light entrance portion, a light passage portion and a light exit portion which are sequentially arranged from back to front. The light exit portion comprises a main light exit surface and a second light exit surface connected to the main light exit surface. A low-beam cutoff line structure is provided at the secondary light exit surface. The secondary light exit surface is configured to refract light emitted to the low-beam cutoff line structure forward and upward. The low-beam primary optical element has a simple structure, and can effectively improve the color of a low-beam light-dark cutoff line and mitigate color dispersion.

A lighting circuit turns on multiple semiconductor light sources. Multiple current sources are each coupled in series with a corresponding one from among the semiconductor light sources. A switching converter supplies a driving voltage V.sub.OUT across each of multiple series connection circuits formed of the multiple semiconductor light sources and the multiple current sources. A converter controller controls a switching transistor of the switching converter based on a relation between a voltage across one from among the multiple current sources and a reference voltage having a positive correlation with the temperature T.sub.j.

A lamp for a vehicle. The lamp includes a light source part that irradiates light, and a lens structure that forms a specific beam pattern by projecting the light radiated by the light source part to a front side, the lens structure includes a body part that forms a body of the lens structure, the body part includes an input area formed in the body part, and that inputs the light irradiated by the light source part to the body part, an output area formed on a surface of the body part, from which the light is output, and that outputs the light input to the body part to the front side.

The present disclosure relates to a headlamp optical element comprising a light collecting part, a light emitting part and a reflecting part connected in sequence. The reflecting part comprises a low beam or high beam cutoff line structure. The end of the light collecting part comprises an outer contour surface and a concave cavity including a cambered front light incident surface and a lateral light incident surface that is curved with a smaller circumference closer to the reflecting part. The outer contour surface is curved with a larger circumference closer to the reflecting part. A lower portion of the light collecting part is provided with a region III light-shape forming structure, wherein part of light converged can be emitted from region III and under the reflecting part in sequence forming a light-shape of a low beam region III. The headlamp optical element is simple, compact, and lighter in weight.

A low beam optical module includes a lens, a light-shielding sheet and at least one light concentrating portion. The light-shielding sheet includes a light-shielding sheet body. An upper edge of a front end of the light-shielding sheet body comprises a low beam cutoff line structure. A front end surface and the rear end surface of the light-shielding sheet body are transparent. The light concentrating portion is connected to a rear end of the light-shielding sheet. The lens is arranged in front of the light-shielding sheet, and an outer contour surface of the at least one light concentrating portion is engaged with a lower surface of the light-shielding sheet body—the light-shielding sheet body can receive emitted light of the light concentrating portion and refract the light from the front end surface to the lens. The projected light forms a low beam region III beam shape. A low beam illumination module, a vehicle lamp and a vehicle includes the low beam optical module.

A lamp for a vehicle, the lamp including: a light source unit and a lens structure that projects the light emitted from the light source unit to form a certain beam pattern. The lens structure includes: a body part; an entrance part that allows the light emitted from the light source unit to be incident to the body part; and an exit part that allows the light incident to the body part to be emitted forward. The body part includes a recessed portion configured to block the light which is emitted from the light source unit and arrives at the recessed portion. The entrance part includes an upper region and a lower region which are provided in an upper portion and a lower portion, respectively, with respect to an optical axis of the exit part, and curvature of the upper region is different from curvature of the lower region.

A lamp for a vehicle includes a first lamp module including a first light source part, and a first lens structure that forms a first light distribution pattern with light irradiated from the first light source part, and a second lamp module including a second light source part, and a second lens structure that forms a second light distribution pattern having characteristics that are different from those of the first light distribution pattern with light irradiated from the second light source part. The first light distribution pattern and the second light distribution pattern overlap each other to form a low beam pattern. Shapes of input surfaces of the first lens structure and the second lens structure, to which the light is input, are different.

A lamp for a vehicle, the lamp including: a light source unit and a lens structure that projects the light emitted from the light source unit to form a certain beam pattern. The lens structure includes: a body part; an entrance part that allows the light emitted from the light source unit to be incident to the body part; and an exit part that allows the light incident to the body part to be emitted forward. The body part includes a recessed portion configured to block the light which is emitted from the light source unit and arrives at the recessed portion. The entrance part includes an upper region and a lower region which are provided in an upper portion and a lower portion, respectively, with respect to an optical axis of the exit part, and curvature of the upper region is different from curvature of the lower region.