LENS HOLDING METHOD AND LENS BARREL

LENS HOLDING METHOD AND LENS BARREL

PROBLEM TO BE SOLVED: To use a plastic lens in order to realize the reduction of cost and lightening in weight and to prevent adverse influence by distortion when using the plastic lens. SOLUTION: This lens barrel has the plastic lens 3 integrally provided with a plurality of fixed projections 4, 5...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KUMANO AKIRA, AKIMOTO KATSUJI, ISHIGE MAREYOSHI
Format: Patent
Sprache:eng
Schlagworte:
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To use a plastic lens in order to realize the reduction of cost and lightening in weight and to prevent adverse influence by distortion when using the plastic lens. SOLUTION: This lens barrel has the plastic lens 3 integrally provided with a plurality of fixed projections 4, 5 and 6 and a lens holding part 2 provided with a plurality of supporting holes 8, 9 and 10 having different aperture shape and functions. By inserting the fixed projection in a supporting hole and crushing the edge of the fixed projection in an umbrella state by thermal processing, the lens is fixed to a lens barrel 1 to have a predetermined positional relationship.