Adc Telecommunications, Inc.

Onto Innovation Inc.

Jeffrey Peter Treptau

Ronald Evan Gerber

Timothy S Gardner

Edward Charles Gage

Thomas J Schmitt

Kevin D Batko

Alan Blair

Christopher J Voges

Nicholas Smith

Craig Robilliard

James Kochendorfer

John Schaefer

One example of an inspection system includes a laser, a magnification changer, and a first camera. The laser projects a line onto a wafer to be inspected. The magnification changer includes a plurality of selectable lenses of different magnification. The first camera images the line projected onto the wafer and outputs three-dimensional line data indicating the height of features of the wafer. Each lens of the magnification changer provides the same nominal focal plane position of the first camera with respect to the wafer.

Wafer inspection system including a laser triangulation sensor

Two sub-assemblies in a fiber optic device are fitted to mounting faces of a central section. The mounting faces are typically flat and mutually orthogonal, thus permitting the adjustment of the two sub-assemblies in decoupled degrees of freedom. This results in a simpler adjustment procedure for aligning the two sub-assemblies. Furthermore, the mounting of the sub-assemblies using the orthogonal mounting faces permits the use of relatively thin layers of adhesive that reduce misalignment problems arising from mismatched thermal expansion when the temperature changes.

Compact optical module with adjustable joint for decoupled alignment

A particular focusing arrangement in a dual fiber collimator improves the transmission efficiency and ease of alignment of the collimator. In particular, the collimator includes two optical fibers mounted in a dual-fiber ferrule. The fiber end-faces are co-planar with the angle-polished end-face of the ferrule and displaced along the optical axis of the ferrule. The collimator unit also includes a first focusing element centered along the optical axis of the ferrule and positioned such that its back front focal point is between the two end faces of the fibers. An advantage provided by this arrangement is that by changing the fiber polish angle and polish azimuth, relative to a line connecting the fiber centers, superior coupling from one fiber to the other can be achieved, even with different working distances and at various wavelengths.

Optical device for compensation of multiple wavelengths and working distances in dual-fiber collimators

An optical device has a first collimator sub-assembly having a first free-space end, and a second collimator sub-assembly having a second free-space end opposing the first free-space end of the first collimator. A central housing has first and second ends and is disposed between the first and second collimator sub-assemblies. A first ring on the first collimator sub-assembly is mounted to the first end of the central housing and a second ring on the second collimator sub-assembly is mounted to the second end of the central housing.

Fiber collimator coupling assembly

Two sub-assemblies in a fiber optic device are fitted to respective end faces of a central section, along a longitudinal axis. The end faces of the central section are non-parallel. Butting the sub-assemblies to respective ends of the central section permits relative adjustment of the two sub-assemblies in substantially decoupled degrees of freedom. This results in a simpler adjustment procedure for aligning the two sub-assemblies. Furthermore, the mounting of the sub-assemblies using angled faces permits the use of relatively thin layers of adhesive that reduce misalignment problems arising from mismatched thermal expansion when the temperature changes.

Growing community of inventors

Lakeville, MN, United States of America

Jeffrey Peter Treptau