Off axis rotation of diffraction grating

Omni-directional cloud height indicator

Optical accelerometer

Optical adapter for a light-wave rangefinder

Optical aiming assembly, for designating and for tracking a targ

Optical apparatus

Optical apparatus

Optical apparatus for correcting the spherical aberration of a s

Optical apparatus having a mirror

Optical arrangement for an opto-electronic range-finder

Optical arrangement for geometrically separating the light fluxe

Optical arrangement having a concave mirror or concave grating

Optical arrangements for coupling monochromators with external s

Optical autocovariance lidar

Optical axis adjusting structure for a range finder

Optical beam separation element, measuring apparatus and...

Optical buoys for oceanographic measurements by imaging lidar

Optical communication systems using Fabry-Perot cavities

Optical component and magnetic-field sensor using superposed sin

Optical connector for use during photometric analysis