Lumus Ltd.

Elop Electro-optics Industries Ltd.

Mordechai Gilo

Tsion Eisenfeld

Elad Sharlin

Yochay Danziger

Eitan Ronen

Ronen Chriki

Jonathan Gelberg

Kobi Greenstein

Netanel Goldstein

Amir Shapira

Dror Hermoni

Elad Lavi

Chaim Aldaag

Tzofia Lavi

Yosef Lavian

Alexander Pagis

Kopel Rabinovitch

An optical device includes a first waveguide, having parallel first and second faces and parallel third and fourth faces forming a rectangular cross-section, that guides light by four-fold internal reflection and is associated with a coupling-out configuration that couples light out of the first waveguide into a second waveguide. The first or second face is subdivided into first and second regions having different optical characteristics. The optical device also includes a coupling-in configuration having a surface that transmits light into the first waveguide. The surface is deployed in association with a portion of the third or fourth face adjoining the second region such that an edge associated with the surface trims an input collimated image in a first dimension, and a boundary between the first and second regions trims the input collimated image in a second dimension to produce a trimmed collimated image that advances by four-fold internal reflection.

Optical aperture multipliers having a rectangular waveguide

Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (&#xb1;90&#xb0;, etc.) for full range testing of the coating.

Optical sample characterization

An interference filter, also referred to as a minus filter or a notch filter, of the type that reflects a narrow wavelength band while transmitting the wavelength bands from both sides of the spectrum. The filter can be designed for operation in any region from the ultraviolet to the visible through the infra-red regions of the spectrum. According to the invention, the thin film filter consists of uniform layer pairs of dielectric materials of different indices of refraction, deposited periodically on a light transmitting substrate. The overall optical thickness of each pair is one wavelength thick (at the notch wavelength). The two layers in a given pair have unequal thicknesses, each one close to half-wave at the notch wavelength. The technique of adjusting the layer thicknesses to non-normal angles of incidence is employed.

Optical notch or minus filter

Growing community of inventors

Rehovot, Israel

Mordechai Gilo