Provided is a light tunnel including a guide member for guiding an incident light to proceed therein while being reflected by a side wall thereof to merge the incident light into a uniform light beam, and an optical path change portion provided at least one end portion of the guide member inclined at a predetermined angle with respect to an optical axis of an incident light to reflect the incident light and direct a path thereof.

A bar-shaped light guide is provided to allow its emitting surface to be exposed from a white casing and is provided with a pattern for scattering and reflecting the light on a bottom surface opposite to the emitting surface. This pattern is formed by a white paint or minute irregularities. Further, an end face of the bar-shaped light guide opposite to the incident side is made cube-corner shaped. In other words, the end face is made chevroned by mirror-finished flat surfaces. These flat surface...

An optical homogenizing and combining apparatus includes a one piece hollow tubular body having a first and second input legs and an output leg, each leg having a polygonal cross-section and a highly reflective interior surface, the first input leg being configured to receive a first light beam having a first intensity and spectral content that is reflected within the first leg to provide a first leg output beam, the second input leg being configured to receive a second light beam having a secon...

An image projector and a light tunnel are provided. The light tunnel includes: a light guide path in a form of a hollow tube having inner surfaces to reflect and guide light; a light entrance to allow light to enter the light guide path and a light exit to emit the light guided by the light guide path. The inner surfaces of the light guide path include inclined surfaces which are inclined in a manner that the aperture of the light guide path increases towards the light entrance. These inclined s...

A fiber optic cable clamp module is disclosed. The clamp module includes a conductive contact for terminating a tracer wire. The clamp module retains the fiber optic cable and provides a weather tight seal around the cable. A carrier for a fiber optic cable clamp module is also disclosed. The carrier provides a connection to ground for a tracer wire when a clamp module containing the tracer wire is installed in the carrier. The carrier also has a switch for disconnecting the tracer wire from gro...

A backlight module including a first light guide plate, a first light source, a second light guide plate, and a second light source. The first light guide plate includes a first side, a second side opposite to the first side, and a first surface with a micro-groove structure. The first light source is disposed on the first side of the first light guide plate. The second light guide plate is disposed on the first light guide plate, and includes a third side, a fourth side opposite to the third si...

A collector for propagating incident radiation to a remote location. The collector comprises, a light directing component coupled to a buffer component, a first propagation component coupled to the buffer component and configured to transmit the incident radiation into a collector region through one of a plurality of windows, and an optical transport assembly coupled to an end of the collector region and having a second propagation component. Each light directing component is configured to redir...

A display apparatus comprising a plurality of light guides and method for producing such an apparatus is disclosed. The display apparatus comprises a plurality of substantially totally internally reflecting (TIR) light guides fashioned to expand a small original optical representation from an input of each light guide to a larger optical representation output at an output of each light guide. Each of the plurality of substantially totally internally reflecting light guides is separated from othe...

A plurality of active gain material (93) is disposed in an active interface portion (44) of a dielectric band-gap cladding confinement region (22) adjacent to a dielectric core (12) of a photonic band-gap crystal fiber (20), wherein during operation, the plurality of active gain material (93) absorbs the pump energy and stores the pump energy as a potential energy storage for stimulation by EM energy in a second guided mode at a second frequency in a second range of frequencies for overlapping w...

A light transmission device is provided including a light pipe having two ends, one end being an ellipsoidal-shaped end. A recess is configured within the ellipsoidal-shaped end for reception of a light source that transmits light into the light pipe. The recess includes an interior concave wall, and the light source is at least partially received in the recess to face the interior concave wall via which light is transmitted into the light pipe. The ellipsoidal-shaped end further includes a curv...