A light-source optical system according to the present invention includes a laser light source that radiates excitation light; a wavelength conversion unit that is irradiated with the excitation light to generate light having a wavelength different from that of the excitation light; and a light deflection and convergence unit that causes an odd number of light beams greater than or equal to three, radiated from the wavelength conversion unit in mutually different directions, to converge at and re-enter the wavelength conversion unit from the backward direction of another light beam, radiated in a direction different from the directions of the odd number of light beams greater than or equal to three, thereby making the odd number of light beams greater than or equal to three overlap the other light beam.

A system of the present disclosure has a host testing device having a first wireless transceiver and having host testing device logic configured to transmit a test command via the first wireless transceiver. Additionally, the system has a remote testing device coupled to a system component. The remote testing device has a second wireless transceiver and remote testing device logic that receives the test command from the host testing device and executes the test command on the system component.

A new and useful illumination device, e.g. for a lithographic optical imaging system, is provided, and comprises a mirror array located between a radiation source and an illumination pupil. Each mirror element of the mirror array is individually steerable (controllable), and the polarization state of light from each mirror element of the mirror array can be selectively controlled, so that the illumination pupil can be filled with a distribution of light that is selectively controlled.

An illumination optical system with a tunable beam angle (IOSTBA) is presented to achieve different beam angles without changing parts. The IOSTBA includes a light source and a post having a proximal end and a distal end, the proximal end in optical communication with the light source, an internal area of the post having a reflective surface. Also shown is a diffuser disposed across the end of the post, the diffuser in optical communication with the post and a reflector surrounding a portion of the post, the reflector movable along a length of the post. A position of the reflector along the post determines a beam angle of a resulting light beam exiting the IOSTBA. The system features a simple and cost effective optical design which works with a variety of light sources, including color mixing and champing strategies.

The present disclosure relates to a resilient and multipurpose window well installation. The installation comprises numerous different features and optional additional attachments and functionalities. In one embodiment, the installation can increase the amount of light entering into a basement window. In an alternative embodiment, the installation can also protect from influx of flood water through the basement window.

A light emitting assembly and method for making optionally includes a light source configured to emit light substantially about a plane, the light having a first spectral profile, and a material configured to shift light incident from the light source from the first spectral profile to a second spectral profile and emit light as shifted. The light, as shifted, is emitted from the assembly generally along an axis orthogonal to the plane.

A trim element having a coating layer defining an outer surface and an inner surface, the coating layer including at least two distinct backlit pattern areas separated by at least one opaque area preventing the passage of light from the inner surface to the outer surface. The trim element includes at least one light source for each backlit pattern area, the light source being fixed on the inner surface of the coating layer facing an opaque area while being spaced apart from the corresponding backlit pattern area. The trim element has one light guide per backlit pattern area.

An example optical device for backlighting includes a receiver disposed in a mobile device to receive ambient light. The optical device also includes a concentrator to concentrate the received ambient light received through the receiver. The optical device further includes a channeler to direct the ambient light beneath a surface of the mobile device to a digital display of the mobile device.

A light emitting diode can produce light in a lighting system. The lighting system can bias the light relative to an optical axis of the light emitting diode. The light emitting diode can be positioned at the rear or back of a cavity formed between four reflective surfaces. A lens can extend across the cavity, between two of the reflective surfaces that face one another. The lens can be elongate in form, for example.

Improvements are disclosed to known twist-lock electrical connectors, whose plug blades form parallel segments of a common cylindrical form. After insertion in a compatible receptacle, rotating the connectors relative to each other engages features intended to prevent accidental separation, but which do not positively lock. An improved plug is disclosed providing positive locking and with prior art receptacles.