About Us
Optical Subassemblies employs a number
of skilled personnel, either directly or as independent
contractors.
Joel Johnson is the founder and
senior optical engineer. Joel has a Masters Degree in
Applied Science from Portland State University. He spent eight
years following graduation from Portland State University at the Oregon
Graduate Institute where he worked for Professor Gail Massey developing
a wide variety of lasers and non-linear optical devices. He left
the Oregon Graduate Institute for a position as optical engineer at
Electro Scientific Industries where he designed diffraction limited
optical systems used in ESI's line of laser trimmers and dynamic ram
repair systems. He founded Optical Subassemblies in 1988 as a
part time consulting company and left ESI in 1990 to pursue consulting
full time. He has authored and co-authored twenty six papers and
holds six patents.
Optical Subassemblies is located
approximately 10 miles South of Portland, Oregon. The facility
includes offices, a prototype machine shop, an optics lab and a
manufacturing area.
The office area accomodates administration and
engineering functions which are networked together to a server that
backs up critical files on a daily basis. Files are easily
transferred to and from clients via a high speed DSL connection.
The optical lab has a four by four foot optics
table with magnetic bases for quickly prototyping and testing optical
systems. Conventional lens testing uses a 1.6 meter
Gaertner lens bench with collimator, nodal point slide,
microscope and numerous other attachments. A Zygo GPX
series interferometer is used for interferometric testing flats and
completed lens assemblies. Miscellaneous optical equipment
includes a small spectrometer, and Abbe refractometer, CCD
cameras and monitors, a frame grabber, an infrared viewer and a large
assortment of lenses, mirrors, light sources and detectors. In
addition to optical test equipment, there is a variety of
oscilloscopes, power supplies, signal generators and a data acquisition
system available.
The prototype machine shop is equipped with a small milling machine,
lathe, drill press, sheet metal brake and shear and an assortment of
test instruments such as granite block, gage pins and micrometers.
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