An optical system includes a light-guide optical element (LOE) with a pair of parallel major external surfaces for guiding image light by internal reflection and a lateral coupling-in surface. An image projector includes a prism with a first surface associated with an illumination arrangement, a second surface associated with a reflective spatial light modulator (SLM), a third surface having a quarter-wave plate and a reflective collimating lens, and a fourth surface optically coupled to the coupling-in surface of the LOE. A polarizing beam splitter (PBS) is arranged within the prism to define a light path from the illumination arrangement via the SLM and the collimating lens to the coupling-in surface of the LOE. A fifth surface of the prism forms a continuation of one of the major external surfaces of the LOE.

The present invention provides a display cover, which includes a light transmission layer, a window pattern disposed on the light transmitting layer, at least one light source disposed on the light transmission layer or the window pattern, and a light conduction layer disposed on the light transmission layer to cover the window pattern and the at least one light source. The window pattern is designed corresponding to a predetermined pattern, so as to define a light transmission window of the predetermined pattern in the light transmission layer. Moreover, at least one light guide structure is disposed on one side of the light conduction layer facing away from the light transmission layer. The at least one light guide structure is configured to at least partially guide light emitted from the at least one light source to the light transmission window.

A method for manufacturing a blinker module for a rearview device of a motor vehicle includes the steps of providing at least one lighting element comprising at least one light guide and at least one light disk or lens and providing of at least one illuminant unit comprising at least one illuminant, wherein the illuminant unit is designed to couple light emitted by the illuminant into the lighting element. A blinker module, rearview device and motor vehicle, including the blinker module manufactured according to the method, are also described.

A motor vehicle light device, comprising a light guide layer equipped with optical decoupling zones, and a light generator able to send light toward the light guide layer. The light guide layer is locally covered with a light-absorbing material.

A backlight device includes a light guide plate including a first incident surface, and one or more second incident surfaces that are connected to the first incident surface and inclined with respect to the first incident surface in a top plan view; at least one green illuminant arranged to face one of (i) the first incident surface and (ii) the one or more second incident surfaces; and at least one red illuminant arranged to face the other of (i) the first incident surface and (ii) the one or more second incident surfaces. At least one of (i) the green light emitted from the green illuminant, and (ii) the red light emitted from the red illuminant, contains a blue component whose emission peak wavelength is 420 nm to 500 nm.

Disclosed are a light guide plate and a backlight unit including the same. The light guide plate includes: a light guide plate including: a light output surface for outputting light to the outside; a reflective surface which is located in the opposite side of the light guide plate; and a light incident surface which is provided in at least one side surface among side surfaces connecting the light output surface and the reflective surface, and to which the light emitted from a light source is incident. A flat portion having a constant thickness is provided in a space which is spaced apart from the light incident surface, and a light input portion is formed in a space between the light incident surface and the flat portion, and a thickness of the light input portion is changed in a greater range than that of the flat portion.

A motor vehicle light system (2) comprising at least two light sources (12a through 12d), at least two optical waveguides (11a through 11d), at least one downstream transparent emission element (10), and at least one controller (5) for time-offset actuation of the at least two light sources (12a through 12d), the at least two light sources (12a through 12d) being set up to couple light into one optical waveguide each (11a through 11d), the optical waveguides (11a through 11d) each having at least one light out-coupling section (14a through 14c) that is set up to couple light into a light coupling section (19) of the emission element (10), wherein the light coupling section (19) of the emission element (10) is step-shaped.

A back light unit includes a light source and a light guide unit having a first surface emitting light to a display panel, a second surface facing the first surface, and a plurality of connecting surfaces connecting the first surface and the second surface. The connecting surfaces includes a first side surface, a second side surfaces and a third side surface between the first side surface and a second side surface, A first included angle of the first incident surface and the first diffusion surface is equal to or greater than about 90 degree.

In one embodiment, an illumination device comprises a light source, a light guide having an incidence surface, and a light refraction structure on the surface. The light guide has an irradiation direction, a thickness direction, and a width direction. The light guide has a first surface in the thickness direction and a second surface in the width direction. A first length in the width direction is greater than a second length in the thickness direction, in the structure. The light from the light source having passed through the structure is reflected on the first surface in the thickness direction and passes through the second surface in the width direction.

A manufacturing method of a display apparatus including a light blocking housing having a peripheral wall and formed at an inner side of the peripheral wall with a concave part, a light source arranged in the concave part, and a lid having an opposite surface to the housing, sealing the light source in the concave part, and having a light transmitting decorative surface formed at a part of the opposite surface except for an end portion, the manufacturing method includes: forming a top surface of the peripheral wall as a stepwise surface including an outer bonding surface and an inner stepped surface lowered more than the bonding surface by one step; and bonding the end portion of the opposite surface to the bonding surface in a state in which an end portion of the decorative surface is allowed to face the stepped surface.