Optical objectives specially designed for the purposes specified below

Classification Context

Section:

PHYSICS

Class:

OPTICS

Subclass:

OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

Child Classifications

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• G02B 13/02 Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
• G02B 13/04 Reversed telephoto objectives
• G02B 13/06 Panoramic objectives; So-called "sky lenses"
• G02B 13/08 Anamorphotic objectives
• G02B 13/14 for use with infrared or ultraviolet radiation
• G02B 13/16 for use in conjunction with image converters or intensifiers
• G02B 13/18 with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
• G02B 13/2 Soft-focus objectives
• G02B 13/22 Telecentric objectives or lens systems
• G02B 13/24 for reproducing or copying at short object distances