Hoya Corporation

Hakaru Fujita

Yukihiro Izumitani

Isao Iizuka

Toshihisa Akaba

Kazumichi Kurihara

Youichi Ishiguro

The present invention makes it possible to perform machining that forms holes or grooves for the attachment of parts to the outer circumferential edge surfaces of lenses of various lens patterns, both accurately and with good reproducibility, by means of a simple operation. The spectacle lenses are positioned so that the machining areas of the spectacle lenses are maintained in a fixed positional relationship with the machining reference position of the machining apparatus by using spectacle lens fastening devices which can fasten the spectacle lenses with attached spectacle lens holding jigs in place, and adjust the positions of these spectacle lenses , to cause specified positions on the spectacle lenses to contact the reference surfaces of a positioning reference plate

Spectacle lens machining method and apparatus

Spectacles lens boring jig positioning device

Rimless spectacles are provided which are easily fabricated and wherewith breadth of effective field of view, durability, aesthetic appearance, and light weight, etc., can be easily realized. Rimless spectacles are provided wherein cutouts are provided in the edges of spectacle lenses and attachment members are pushed into place in those cutouts and attached. The cutouts have widths that are either substantially constant or gradually narrow from the edge of the lens toward the center thereof, with ridges or grooves substantially parallel to the front and back surfaces of the spectacle lenses formed in the inner circumferential wall parts thereof. The attachment members have grooves or ridges formed therein that, when those attachment members are inserted into the cutouts from the edge sides of the spectacle lenses and pushed into place, mate with ridges or grooves in the cutouts where the attachment members abut on the inner circumferential wall parts of the cutouts. Thus these rimless spectacles are designed so that the attachment members are attached by being inserted from the edge sides of the spectacle lenses into the cutouts and pushed into place therein.

Lens holding mechanism for spectacles

The present invention provides spectacles for which lens replacement is simple, and replacement lens portability is excellent, and which is capable of reliably mounting and fastening a lens to a frame without a risk of damaging a lens. The present invention has a lens-side-connecting member for mounting lens detachably to a frame portion , which is constituted by a member separate from lens and is fixed to the edge portion of the lens , and a frame-side-connecting member , which is disposed on the above-mentioned frame portion for mounting the above-mentioned lens detachably to the above-mentioned frame portion by connecting the same detachably to the above-mentioned lens-side-connecting member

Growing community of inventors

Tokyo, Japan

Hakaru Fujita