Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1995-02-24
1996-07-30
Rosenberger, Richard A.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
G01C 110
Patent
active
055417272
ABSTRACT:
A self-leveling plumb, level and pointing tool uses a visible laser diode to project light beams in two modes through two windows. Accurate, low cost structures for generating level and plumb beams and planes of light are disclosed. In principal embodiments, all leveling is accomplished using a very flexible coil spring as a pendulum element, a chain link connection in combination with such a spring, or a point contact suspension. Several accessories are disclosed for use with the laser tool. One accessory is a beam deviation accessory which can be used with the self-leveling laser tool to project a beam of known inclination. The accessory uses a pair of lenses whose relative positions are shifted to generate the desired angle.
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Ligtenberg Christiaan
Rando Joseph F.
Freiburger Thomas M.
Hantis K. P.
Rosenberger Richard A.
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