Optical systems or apparatus not provided for by any of the groups ,

Introduced: September 1968

Last revised: January 2006

Classification Context

RETICULES for optical instrumentsVIEWERS without projection

17 direct subcodes

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G02B 27/01 Head-up displays
G02B 27/02 Viewing or reading apparatus
G02B 27/09 Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
G02B 27/1 Beam splitting or combining systems
G02B 27/18 for optical projection, e.g. combination of mirror and condenser and objective
G02B 27/28 for polarising
G02B 27/3 Collimators
G02B 27/32 Fiducial marks or measuring scales within the optical system
G02B 27/4 Optical focusing aids
G02B 27/42 Diffraction optics
G02B 27/48 Laser speckle optics
G02B 27/5 Optics for phase object visualisation
G02B 27/56 Optics using evanescent waves, i.e. inhomogeneous waves
G02B 27/58 Optics for apodization or superresolution; Optical synthetic aperture systems
G02B 27/6 Systems using moiré fringes
G02B 27/62 Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
G02B 27/64 Imaging systems using optical elements for stabilisation of the lateral and angular position of the image