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Class Information
Number: 356/247
Name: Optics: measuring and testing > Fiducial instruments
Description: Subject matter wherein an optical instrument establishes an optical axis whereby an observer may precisely orient the optical instrument relative to some remote point toward which the optical axis is directed, or and usually whereby the observer may orient some device such as a gun to which the optical instrument is attached.

Sub-classes under this class:

Class Number Class Name Patents
356/248 Artificial reference 38
356/253 Deflection of line of sight 8
356/251 Reticle lies outside viewing path 51

Patents under this class:
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Patent Number Title Of Patent Date Issued
8705170 High NA catadioptric imaging optics for imaging A reticle to a pair of imaging locations Apr. 22, 2014
8621774 Firearm with multiple targeting laser diodes Jan. 7, 2014
8602564 Methods and systems for projecting in response to position Dec. 10, 2013
8405904 Device for superimposing an image into the beam path of an aiming optic Mar. 26, 2013
8393109 Combination red dot sight and range indicator apparatus Mar. 12, 2013
8179528 Assembly comprising a portable device having fluid-fillable container and a holder May. 15, 2012
8094309 Line of sight adjustment method for optical systems Jan. 10, 2012
8060344 Method and system for automatically performing a study of a multidimensional space Nov. 15, 2011
7947944 Laser transmitter, laser receiver and method May. 24, 2011
7916290 Coaxially arranged, off-axis optical system for a sighting device or aiming device Mar. 29, 2011
7848015 Compact two-element infrared objective lens and IR or thermal sight for weapon having viewing optics Dec. 7, 2010
7821678 Image forming apparatus capable of producing a high-precision light beam with a simple structure Oct. 26, 2010
7733480 Device to aid the positioning of a pilot in an aircraft Jun. 8, 2010
7672045 Compact two-element infrared objective lens and IR or thermal sight for weapon having viewing optics Mar. 2, 2010
7643132 Range finder Jan. 5, 2010
7643867 Fiducial marker devices, tools, and methods Jan. 5, 2010
7612952 Adjustment mechanism Nov. 3, 2009
7545492 Sighting device and additional device for measuring, working, and/or operating with or without contact Jun. 9, 2009
7432105 Self-calibration system for a magnetic binding assay Oct. 7, 2008
7145703 Low profile holographic sight and method of manufacturing same Dec. 5, 2006
6864589 X/Y alignment vernier formed on a substrate Mar. 8, 2005
6741343 Level with angle and distance measurement apparatus May. 25, 2004
6724471 Arrangement for the vertical orientation of a geodetic instrument Apr. 20, 2004
6665067 Laser beam detecting device for a construction machine Dec. 16, 2003
6459483 Level with angle and distance measurement apparatus Oct. 1, 2002
6445497 Optical sighting system Sep. 3, 2002
6256089 Optical donor tissue cell Jul. 3, 2001
6222625 Adjustable laser string square Apr. 24, 2001
6184979 Laser reference level setting device Feb. 6, 2001
6160616 Laser system Dec. 12, 2000
6128326 Constructional laser Oct. 3, 2000
6081327 Leveling instrument Jun. 27, 2000
6043879 Automatic laser level Mar. 28, 2000
6038050 Rotating laser scanner head with target mounted therein and system and method for use therewith Mar. 14, 2000
5959729 Automatic tilt angle compensator Sep. 28, 1999
5929984 System and method for generating multiple parallel beams and planes Jul. 27, 1999
5917593 Apparatus for use in construction machines for detecting laser beam and displaying information based on the same Jun. 29, 1999
5914778 Automatic laser level Jun. 22, 1999
5903345 Remotely positionable gravity oriented laser scanner May. 11, 1999
5891029 Method of and device for positioning a living body for biological measurement and apparatus for measurement of biological information Apr. 6, 1999
5867263 Laser survey instrument having a reflection light blocking means Feb. 2, 1999
5748306 Visual alignment instrument May. 5, 1998
5742387 Laser beam levelling device and process for operating a laser beam levelling device and associated contrivance Apr. 21, 1998
5694214 Surface inspection method and apparatus Dec. 2, 1997
5610711 Remote pointing system for a self-leveling laser instrument Mar. 11, 1997
5594993 Hand-held builder's square and string line device incorporating a laser Jan. 21, 1997
5499456 Sight scope Mar. 19, 1996
5493450 Sighting instrument Feb. 20, 1996
5452131 Sighting device for small arms, comprising a variable aperature Sep. 19, 1995
5307368 Laser apparatus for simultaneously generating mutually perpendicular planes Apr. 26, 1994

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