A power converter may comprise converter circuitry, a housing and a display. The converter circuitry is configured to convert electrical energy. The housing may comprise a mounting groove. The display may comprise a display screen provided in the mounting groove and a protective layer covering the mounting groove. The protective layer may have a translucent area and an opaque area adjacent to the translucent area. The display screen may comprise a display area located corresponding to the translucent area, and a projection of the translucent area toward the display screen may cover the display area.

A vehicle lighting device according to an embodiment may include a housing mounted inside a vehicle, a light source part, and an aluminum film part of which a shape changes according to an operation of the light source part.

A vehicle lighting device according to an embodiment may include a housing mounted inside a vehicle, a light source part, and an aluminum film part of which a shape changes according to an operation of the light source part.

A luminaire (100), comprising at least one light source (110) arranged to emit light source light (120), a light exit window (130), wherein the emitted light is arranged to exit the luminaire through the light exit window as luminaire light (135), wherein the light exit window is configured to influence the luminance, L, of the light source light, for generating a profile of the luminance, LP, of the luminaire light as a function of a length 5 dimension, x, of the light exit window, defined from a center (310) of the light exit window to a periphery (320) of the light exit window.

A luminaire (100), comprising at least one light source (110) arranged to emit light source light (120), a light exit window (130), wherein the emitted light is arranged to exit the luminaire through the light exit window as luminaire light (135), wherein the light exit window is configured to influence the luminance, L, of the light source light, for generating a profile of the luminance, LP, of the luminaire light as a function of a length 5 dimension, x, of the light exit window, defined from a center (310) of the light exit window to a periphery (320) of the light exit window.