Collapsible lens barrel and imaging apparatus

There is provided a collapsible lens barrel including plural barrels of different outside diameter from one another and enabled to move coaxially and perform relative movement in an axial direction, and an image-capturing optical system disposed within the plural barrels; wherein the image-capturing...

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Bibliographische Detailangaben
1. Verfasser:	AOKI NOBUAKI,ISHII ATSUYA
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	There is provided a collapsible lens barrel including plural barrels of different outside diameter from one another and enabled to move coaxially and perform relative movement in an axial direction, and an image-capturing optical system disposed within the plural barrels; wherein the image-capturing optical system includes at least two lens holding frames (1402, 1602, 1802) arranged in a direction of an optical axis of the image-capturing optical system; and, considering an object side is set as a front side and an opposite side is set as a rear side, each of a rearmost lens holding frame (1802), placed at a rearmost position, and one of the lens holding frames (1602) placed immediately in front of the rearmost lens holding frame (1802), are respectively movably supported by a corresponding guide mechanism (28) to move in the direction of the optical axis and to move in the direction of the optical axis by a corresponding drive mechanism (29).