Title:
CENTERING ASSEMBLY DEVICE FOR LENS
Document Type and Number:
Japanese Patent JPH03114012
Kind Code:
A
Abstract:
PURPOSE:To simplify the constitution, and also, to surely assemble a lens to a lens barrel in a state that optical axes of lenses coincide with each other by pushing the side face of the lens by a pin of a small diameter through plural pieces of holes made on the side of the lens barrel, and allowing optical axes of plural lenses to align with each other in the lens barrel of the lens. CONSTITUTION:By arranging plural pieces of small holes on the side face of a lens barrel 1, and pushing the side of a lens 2 by a pin 4 of a small diameter through this hole, optical axes of lenses are allowed to align with each other. That is, the eccentric quantity and the direction of the lens 2 are measured by an eccentricity measuring means 7, and by moving forward and backward the pin 4 in the direction for correcting the eccentricity from a result of its measurement, a position of the lens is determined, and in this state, and adhesive agent is hardened in a state that the lens position remains held. In such a way, optical axes of each lens can be allowed to align with each other by a simple mechanism and the assembly is facilitated, and also, it is scarcely influenced by the contraction at the time when the adhesive agent is hardened and the centering assembly can be executed with high accuracy.
Inventors:
NOZAWA RYUSUKE
Application Number:
JP25352889A
Publication Date:
May 15, 1991
Filing Date:
September 28, 1989
Export Citation:
Assignee:
OLYMPUS OPTICAL CO
International Classes:
G02B7/02; B23P21/00; G02B27/62; (IPC1-7): B23P21/00; G02B7/02; G02B27/62
Attorney, Agent or Firm:
Takeshi Nara