Patent ID: 6512639
Filing Date: 2003-01-28
Classification: G02B

Abstract:
A lens apparatus, comprising:a fixed cylinder of which axis is identical with an optical axis of the lens apparatus; a zoom lens arranged in the fixed cylinder movably along the optical axis; a focus lens arranged in the fixed cylinder movably along the optical axis; a zoom ring which is rotatably arranged on the fixed cylinder, the zoom ring being rotated to move the zoom lens along the optical axis to adjust zoom of the lens apparatus; a focus ring which is arranged on the fixed cylinder movably along the optical axis, the focus ring being moved to move the focus lens along the optical axis to adjust focus of the lens apparatus; and a collapsing mechanism which, when the focus ring is moved back over a range of movement for adjusting the focus, connects the focus ring to the zoom ring and rotates the zoom ring along with the back movement of the focus ring so as to move the zoom lens back over a range of movement for adjusting the zoom.