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:
Sep. 23, 2008
Filed:
Oct. 25, 2005
Atsushi Naito, Aichi-ken, JP;
Kanji Sekihara, Toyokawa, JP;
Yoshihiro Okumura, Toyohashi, JP;
Akihiko Matsumoto, Toyokawa, JP;
Atsushi Naito, Aichi-ken, JP;
Kanji Sekihara, Toyokawa, JP;
Yoshihiro Okumura, Toyohashi, JP;
Akihiko Matsumoto, Toyokawa, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
An apparatus for molding optical components of a small size and high precision is provided with good transferability and a reduced production cycle. This apparatus includes a plurality of runners arranged in a pattern allowing multi-cavity molding for molding plastic lenses each having an outer diameter of 2 mm to 12 mm and surface roughness Ra of 20 nm or less. The total projected area of the runners is determined within a range of 1 cmto 12 cm. The runners are arranged to extend around a sprue in directions perpendicular to an outer surface of the base molds. The pattern of the runners extending from the junction with the sprue to each shape transfer section is configured in two intersecting directions. A cavity is of a rectangular outer shape when seen from a pressure contact surface side.