Apparatus for moving a lens

• US 4,734,726 A
• Filed: 04/16/1987
• Issued: 03/29/1988
• Est. Priority Date: 04/21/1986
• Status: Expired due to Fees

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Sasaki, Saburo, Takahashi, Akira, Nishi, Koichi, Koshiishi, Shinichiro
• Primary Examiner(s): Gellner, Michael L.
• Application Number:
  US07/038,980
• Time in Patent Office: 348 Days
• Field of Search: 354/195.1, 354/400
• US Class Current: 396/133
• CPC Class Codes: G03B 17/04 collapsible, foldable or extensible, e.g. book type
• CPC Class Codes: G03B 3/10 Power-operated focusing

Abstract

An apparatus for moving a lens between first and second positions, comprising; a support member means for supporting said lens, an electric motor connected to said support member means for moving said support member, a control circuit means connected to said motor for supplying a first current to said motor to move said support member means from said first position to said second position and vice versa and a second current to said motor to hold said support member means at least one of said first position and second position, said second current being smaller than said first current.

Claims

1. An apparatus for moving a lens between first and second positions, comprising;

a support member means for supporting said lens, an electric motor connected to said support member means for moving said support member, a control circuit means connected to said motor for suppling a first current to said motor to move said support member means from said first position to said second position and vice versa and a second current to said motor to hold said support member means at least one of said first position and second position, said second current being smaller than said first current.