A lens unit with a central axis is provided. The lens unit includes a fixed portion, a movable portion, and a first driving assembly. The fixed portion includes an outer frame and a bottom combined with the outer frame. The outer frame and the bottom are arranged along the central axis. The movable portion is movably connected to the fixed portion, and carries a lens with an optical axis. The central axis is not parallel to the optical axis. The first driving assembly is connected to the movable portion, and drives the movable portion to move relative to the fixed portion. The first driving assembly also includes a biasing element made of a shape memory alloy.

An object is to promote a reduction in thickness of a light guide plate and to provide a technique for suppressing brightness non-uniformity in the light guide plate. A light guide plate includes: a depressed portion provided on an opposite side of a light exit surface from which light is emitted; a first direction changing portion which is provided inside the depressed portion and above a light emitting element in a direction oriented toward the light exit surface, the light emitting element being provided on the opposite side of the light exit surface, and which changes a direction of travel of at least a part of light of the light emitting element; and a second direction changing portion which is provided above the light emitting element and higher than the light exit surface and which changes a direction of travel of at least a part of light of the light emitting element.

A mobile terminal disclosed herein includes a window on one surface of a terminal body and configured to be curved, and a liquid crystal display (LCD) on a rear surface of the window to output visual information, and curved by external force. The liquid crystal display includes a liquid crystal panel to generate an image using light from a light guide plate, at least one prism sheet disposed between the light guide plate and the liquid crystal panel, and a supporting member accommodating the light guide plate and the prism sheet and supporting the liquid crystal panel. The supporting member includes first and second mounting portions with the liquid crystal panel mounted. At least one of the first and second mounting portions has a recess portion for insertion of an edge of the prism sheet to prevent shifting of the prism sheet due to the liquid crystal display being curved.

A lighting device includes LEDs 17, a light guide plate 19 including an edge surface and a pair of plate surfaces, a light reflection sheet 40, and a wavelength conversion sheet 50. A part of the edge surface is a light entrance surface 19B through which light from the LEDs 17 enters, and the pair of plate surfaces are light exit surfaces 19A, 19C through which the light exits. The light guide plate 19 includes second prism portions 65 formed on the light exit surface 19A and configured to collect light in a direction of a normal line of the light exit surface 19A. The light reflection sheet 40 is disposed to cover the light exit surface 19C reflects the light in a direction toward the light guide plate 19. The wavelength conversion sheet 50 is disposed between the light guide plate 19 and the light reflection sheet 40 and converts a wavelength of light transmitting therethrough.

An object of the present invention is to provide a light source lens that makes it possible to improve unevenness in a luminance distribution, an illumination unit, and a display unit. A light source lens (1) according to the present disclosure includes an incident surface on which light from a light-emitting device is incident, and an exit surface (20) that has a diffusing function at a center part (21) for light incident through the incident surface as well as a light-condensing function at at least a portion of an intermediate part (22) and a peripheral part (23) for the light incident through the incident surface.

To provide a technique for suppressing brightness non-uniformity of an area illuminated by a light source and also suppressing a decline in contrast between areas caused by incidence of a luminous flux of the area to another area. Provided is a light guide plate including: a diverging portion which is provided on an opposite side of a light exit surface from which light is emitted, the diverging portion causing a luminous flux emitted from a light emitting element to diverge; and a restricting portion which is provided, when a prescribed range from the light emitting element on the light exit surface is defined as an illuminated area illuminated by the light emitting element, in at least a periphery of the illuminated area on the light exit surface and which deflects or shields light traveling from inside toward outside of the illuminated area to restrict traveling, toward a side of the light exit surface, of light traveling toward the outside of the illuminated area.

An encapsulated light-emitting diode device is disclosed. The encapsulated light-emitting diode device includes a circuit carrier including a surface; a light-emitting device including a transparent substrate, the transparent substrate including a first surface and a second surface, and the first surface and the surface of the circuit carrier includes an included angle larger than zero; a light-emitting diode chip located on the first surface of the transparent substrate; and a first transparent glue covering the light-emitting diode chip and formed on the first surface; and a second transparent glue formed on the second surface corresponding to the first transparent glue; wherein the first transparent glue has a circular projection on the first surface and the light-emitting diode chip is substantially located at the center of the circular projection.

An apparatus for use with a head wearable display includes a curved eyepiece for guiding display light to a viewing region offset from a peripheral location and emitting the display light along an eye-ward direction in the viewing region. The curved eyepiece includes a curved lightguide to guide the display light, an eye-ward facing surface that is concave, a world facing surface that is convex and opposite the eye-ward facing surface, and an optical combiner disposed at the viewing region to redirect the display light towards the eye-ward direction for output from the curved lightguide. The optical combiner is partially transmissive to ambient light incident through the world facing surface such that the viewing region is see-through. In some embodiments, a prism is disposed proximate to the input surface to pre-compensate the display light for lateral chromatic aberrations resulting the curved lightguide.

A display device includes a first display panel including a light emitting element; a light condensing element at a side portion of the first display panel; a light guide plate below the first display panel; The light condensing element transmits external light to the light guide plate.

A light source configured to provide output light having a bifurcated emission pattern includes an optical emitter configured to emit light and a emission control layer. The emission control layer includes a first plurality of light-blocking elements spaced apart from one another in a vertical direction at an output aperture of the light source and a second plurality of light-blocking elements displaced from the output aperture and interleaved with the first plurality. The emission control layer is configured to transmit a portion of the emitted light through gaps between the light-blocking elements to provide the output light having the bifurcated emission pattern in the vertical direction. A multiview backlight includes the light source along with a light guide and an array of multibeam elements to provide a plurality of directional light beams using the output light having the bifurcated emission pattern.