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Article | REF: R6500 V1

Optical observation and measurement instruments

Author: Claude VÉRET

Publication date: October 10, 1993

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1. Reminders of instrumental optics

1.1 Definitions and conjugation relationships

A centered optical system is a set of lenses (and/or mirrors) with their axes of symmetry coinciding, which refract (and/or reflect) light [1] . In such a system, a number of characteristic cardinal elements are defined (figure 1 ).

The transverse magnification g t (ratio of the length of an image A′B′ to the length of the conjugate object AB) is :

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Reminders of instrumental optics
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