Interchangeable lens for a camera

• US 3,904,279 A
• Filed: 04/23/1974
• Issued: 09/09/1975
• Est. Priority Date: 05/07/1973
• Status: Expired due to Term

• Current Assignee: Noriaki Sanada
• Original Assignee: Noriaki Sanada
• Inventors: Sanada, Noriaki
• Primary Examiner(s): Wibert, Ronald L.
• Assistant Examiner(s): Evans, F. L.
• Application Number:
  US05/463,245
• Time in Patent Office: 504 Days
• Field of Search: D61/1E 350/252,255,254,257 354/202,286
• US Class Current: 359/827
• CPC Class Codes: G02B 7/10 by relative axial movement of several lenses, e.g. of varifocal objective lens
• CPC Class Codes: G03B 17/14 interchangeably

Abstract

An interchangeable lens for a camera includes a rotatable adjust member for focusing or zooming. The adjust member is covered with a flexible cover provided with knurling. The cover is provided with embossed display indicia for permitting the type of the lens such as focal length and/or f-number to be identified either by sight or by touch.

Claims

1. An interchangeable lens for a camera which comprises in combination:

a stationary member detachably securable to a camera;

a lens frame movably held in said stationary member;

an adjustment ring rotatably mounted around said stationary member; and

a cylindrical covering made of a flexible material fitted around the outer periphery of said adjustment ring, and having on the peripheral surface thereof an indicia formed in relief such as to identify the focal length of the interchangeable lens both by sight and touch.

2. The interchangeable lens according to claim 1, wherein said flexible cylindrical covering is provided on the outer peripheral surface thereof with a plurality of embossed indicias to identify the focal length of said interchangeable lens.

3. The interchangeable lens according to claim 1, wherein said flexible cylindrical covering is provided on the entire outer surface of said covering with embossed indicias to identify the focal length of said interchangeable lens, said embossed indicias also serving as anti-slip patterns.