JPH05340742

PURPOSE:To measure the inclination of a lens without being affected by secondary reflection light by providing a through hole at a regulation shaft. CONSTITUTION:A through hole is provided at a regulation shaft 2a so that no laser beam light image which is transmitted through a lens 4 may be formed....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NAKASHIRO MASAHIRO, UCHIMURA SEIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	PURPOSE:To measure the inclination of a lens without being affected by secondary reflection light by providing a through hole at a regulation shaft. CONSTITUTION:A through hole is provided at a regulation shaft 2a so that no laser beam light image which is transmitted through a lens 4 may be formed. After laser beam light which is spread by a beam expander 6 is applied to a lens 4 to be measured, it is reflected on the surface of the lens 4 to be measured and the image is formed at a light reception element 11 by a focusing lens 10. In this case, laser beam light passing through the lens 4 to be measured is transmitted without forming an image on the surface of the regulation shaft 2a, thus measuring the inclination of the lens 4 without being affected by secondary reflection light according to the through hole which is provided at the regulation shaft 2a.