Abstract:
This invention is suitable for optical technology field. A lens, LED back light module and display device are provided. The lens receives light emitted by the light source through a light incident surface, the light emitted by the light source enters in the lens, a part of the light is refracted from one light exiting surface, a part of the light is reflected from one light exiting surface to another light exiting surface or bottom surface, then is reflected from the another light exiting surface or bottom surface to further another light exiting surface and finally is refracted from the further another light exiting surface, therefore the light emitted by the light source is separated in the lens, and then each light is refracted from different light exiting surface of the lens thereby increasing the light exiting area and the uniformity. The lens of the present invention is suitable for the LED back light modules and display devices.
Abstract:
This invention relates to a light guide lens adapted for guiding light emitted from a light emitting element (20). The light guide lens includes a base portion (2) disposed on a light axis (L) and including a light incident surface (21), and a light guide portion (3) surrounding the light axis (L) and disposed on the periphery of the base portion (2). The light guide portion (3) includes an inner peripheral edge (31) connected to the base portion (2), an outer peripheral edge (32) opposite to the inner peripheral edge (31), and at least one light control unit (33) connecting the inner and outer peripheral edges (31, 32) and having first and second light guide sections (4, 5) so as to form a varied light pattern.
Abstract:
Die Erfindung betrifft eine Linse (1) mit wenigstens einer objektseitigen und mindestens einer bildseitigen lichtbrechenden Fläche (17, 18). Um eine Lichtintensität eines durch die Linse (1) getretenen Nutzlichtstroms (16) bestimmen zu können, ohne dass zusätzliche Komponenten zur Auskopplung von Licht benötigt werden, ist erfindungsgemäß vorgesehen, dass die Linse (1) eine zwischen der objektseitigen und der bildseitigen lichtbrechenden Fläche (17, 18) angeordnete und schräg zur optischen Achse (2) ausgerichtete Reflexionsfläche (5) aufweist.
Abstract:
According to an aspect of the invention, a lighting device is provided. The lighting device comprises a light source, and an optical structure. The optical structure has an exit surface for outputting light and a reflective surface for reflecting light from the light source towards the exit surface. Further, the optical structure comprises a plurality of prism elements arranged at the exit surface for redirecting light from the reflective surface by means of total internal reflection and/or refraction. With prism elements arranged on the exit surface, a portion of the light reflected by the reflective surface is redirected, thereby widening the light intensity distribution of the lighting device and increasing the area illuminated by the lighting device.
Abstract:
Disclosed is a display device. The display device includes light sources to generate light; light flux control members to refract the light; a drive substrate on which the light sources are mounted; a cover to cover the drive substrate; reflective portions disposed in at least one of the drive substrate and the cover to reflect the refracted light; and a display panel into which the reflected light is incident.
Abstract:
[Object] In a light emitting device using a solid-state light emitting element (LED), to enable light distribution of exit light to be broadened, and make it difficult for light unevenness to occur. [Means for Settlement] A light emitting device 1 is provided with: a plurality of LEDs 2; a board 3 that is assembled with the LEDs 2 in an array; and a light distribution adjusting member 4 that adjusts light distribution of light emitted from the LEDs 2, in which the light distribution adjusting member 4 is provided with being shared by two or more LEDs 2, and has: a containing part 41 that contains the LEDs 2; a concavely curved surface part 42 that is provided above light lead-out surfaces of the LEDs 2 and also immediately above the LEDs 2; and a pair of convexly curved surface parts 43 that are provided on both sides of the concavely curved surface part 42 and smoothly continuous with the concavely curved surface part 42 in terms of surface. Most of light entering the containing part 41 from the LEDs 2 is fully reflected by the concavely curved surface part 42 to travel in lateral directions, and is refracted by and transmits through the concavely curved surface part 42 to thereby exit from the light distribution adjusting member 4 with exhibiting broad light distribution. Also, directionality is reduced, and therefore light unevenness can be made difficult to occur.
Abstract:
Lens assemblies for use in remote phosphor lighting systems, and methods of making and using them, are described. The lens assemblies typically include a lens member, a dichroic reflector attached to an outer surface of the lens member, and a phosphor layer attached to an inner surface of the lens member. The dichroic reflector reflects LED light originating from a given source point in a reference plane proximate the inner surface to a given image point in the reference plane. The phosphor layer may be patterned to cover one or more first portions of the inner surface and to expose one or more second portions, and/or the phosphor layer may be removably bonded to the inner surface. The lens assemblies can be readily combined with one or more short wavelength (e.g. blue) LEDs and other components to provide a remote phosphor lighting system.
Abstract:
In one aspect, an optical lens assembly (herein referred to also as an optic) is provided that comprises a plurality of lenses (or lens segments) adapted to receive light from a light source, each of said lenses (or lens segments) having an input surface and an output surface and a lateral surface extending between the input and output surfaces. The lenses are arranged relative to one another and positioned relative to the light source such that each of the lenses receives at its input surface a different portion of light emitted by the source, e.g., each lens receives at its input surface light emitted by the source into an angular subtense (solid angle) different than an angular subtense associated with another lens. Each lens (or lens segment) guides at least a portion of the received light to its output surface via reflection, e.g., via total internal reflection (TIR).