Title:
PRISM GLASSES
Document Type and Number:
Japanese Patent JP2011242736
Kind Code:
A
Abstract:
To provide glasses which, with an aim to expand a field of upper front vision, enable a wearer to view a landscape or a situation by shifting a line of sight to an intended direction without forcing the wearer to change posture thereof and allow triangular prism lenses to be used as a detachable adaptor depending on an intended use and appropriateness of a prism diopter.
A triangular prism is used as a spectacle lens.
Inventors:
YAMADA HIDEO
Application Number:
JP2010130469A
Publication Date:
December 01, 2011
Filing Date:
May 20, 2010
Export Citation:
Assignee:
YAMADA HIDEO
International Classes:
G02C7/14
Domestic Patent References:
| JPS60191023U | 1985-12-18 | |||
| JP3067405U | 2000-04-07 | |||
| JPH02242221A | 1990-09-26 | |||
| JP3116154U | 2005-12-02 | |||
| JP2007219462A | 2007-08-30 |
Foreign References:
| GB2338077A | 1999-12-08 |