The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1996
Filed:
Dec. 08, 1994
Naoki Kitaoka, Sakura, JP;
Keiji Ohsawa, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
Fitting holes are formed on a line of extension or a substantially vertical bisector in an arranging direction of a pair of lenses of a plastic plate formed integrally with at least the pair of lenses. Correspondingly, bosses are formed protruding from a base body using an adherable material so that a height thereof is larger than a sum of a thickness of the plastic plate and a thickness of a stop plate. Even after attaching the stop plate and the plastic plate to the base body, the bosses are protrudable from the plastic plate. Thus, the plastic plate and the stop plate are fixed in a sandwiched state between the base body and an adhesive agent. The plastic lens having a poor adhesion with the adhesive agent can be surely fixed without increasing the number of parts, and an instability of a positional accuracy due to environmental changes is obviated.