Parallel light traveling in a direction perpendicular to an outgoing surface having a curved surface is emitted. A light guide member according to one or more embodiments may include: an incident surface where light from a light source enters; at least one reflective surface that reflects the light having entered from the incident surface; and an outgoing surface that is formed of a curved surface and emits the light reflected by the reflective surface. The reflective surface reflects the light having entered from the light source in a direction in which the incident angle of the light incident on the outgoing surface is constant.

A light source device that supplies light in a specific polarization direction to an information display device includes a point-shaped or planar light source, an optical means for reducing the divergence angle of light from the light source, and a light guide having a reflection surface that reflects light from the light source to propagate to the information display device. The reflection surface of the light guide is arranged so as to face the information display device, and reflects specific polarized image light displayed on the information display device to be displayed on the window glass, which is an information display surface. Therefore, an information display system is realized in which the inside of the window glass can be visually recognized from the outside or the outside of the window glass can be visually recognized from the inside when image information is not displayed.

An automobile comprises a light transmitting film with a thickness not greater than 0.5 millimeters with a core layer, a lightguide region of the film comprises a light emitting region with light extracting features positioned to receive and extract light from at least one light source propagating by total internal reflection within the core layer out of the core layer, and a light mixing region positioned between the at least one light source and the light emitting region, wherein a surface of the portion of the automobile is visible through the light emitting region of the film when the at least one light source is not emitting light and the light transmitting film is conformal with the surface of the portion of the automobile. The surface of the film may have arcuate cross-sectional shape conforming to a curved surface of the portion of the automobile.

In a lighting arrangement, in particular for escape route lighting, comprising a light source and an optical element assigned to the light source, said optical element being designed to emit asymmetrically the light emitted by the associated light source, the optical element can be positioned in different ways.

A device comprises a film with an adhesive layer on a first side of a core layer, a major sheet area of the film bounded by edges of the film with a light extracting region positioned to receive and extract light propagating by total internal reflection within the core layer out of the major sheet area, and a minor sheet between the major sheet area and an array of strips. The strips extend from the minor sheet area of the film, and each strip of the array of strips is folded within a fold region and stacked. The device further comprises a component extending a width of the array of strips where they extend from the minor sheet area, wherein the adhesive layer adheres the component to the film between fold region and the light extracting region. In some embodiments, the adhesive layer is a cladding layer.

An automobile comprises a light transmitting film with a thickness not greater than 0.5 millimeters with a core layer, a lightguide region of the film comprises a light emitting region with light extracting features positioned to receive and extract light from at least one light source propagating by total internal reflection within the core layer out of the core layer, and a light mixing region positioned between the at least one light source and the light emitting region, wherein a surface of the portion of the automobile is visible through the light emitting region of the film when the at least one light source is not emitting light and the light transmitting film is conformal with the surface of the portion of the automobile. The surface of the film may have arcuate cross-sectional shape conforming to a curved surface of the portion of the automobile.

A device comprises a film with an adhesive layer on a first side of a core layer, a major sheet area of the film bounded by edges of the film with a light extracting region positioned to receive and extract light propagating by total internal reflection within the core layer out of the major sheet area, and a minor sheet between the major sheet area and an array of strips. The strips extend from the minor sheet area of the film, and each strip of the array of strips is folded within a fold region and stacked. The device further comprises a component extending a width of the array of strips where they extend from the minor sheet area, wherein the adhesive layer adheres the component to the film between fold region and the light extracting region. In some embodiments, the adhesive layer is a cladding layer.

Parallel light traveling in a direction perpendicular to an outgoing surface having a curved surface is emitted. A light guide member according to one or more embodiments may include: an incident surface where light from a light source enters; at least one reflective surface that reflects the light having entered from the incident surface; and an outgoing surface that is formed of a curved surface and emits the light reflected by the reflective surface. The reflective surface reflects the light having entered from the light source in a direction in which the incident angle of the light incident on the outgoing surface is constant.

A light emitting device includes a light source and a film with a major sheet area comprising a light extracting region positioned to receive and extract light out of the major sheet area, a minor sheet area of the film between the major sheet area and an array of coupling lightguides in the form of strips, each coupling lightguide is bent and stacked in a thickness direction of the coupling lightguides. The light source emits light into the array of coupling lightguides in the thickness direction through one or more of the non-lateral edge surfaces of the coupling lightguides. In one embodiment, an optical element is optically coupled to the coupling lightguide or a surface of a coupling lightguide includes an optical element. In one embodiment, one or more coupling lightguides include core regions with vertical light turning optical edges.