Spectacles

Details Spectacles Spectacles

1999-01-26

1999-12-14

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With support or holder

351113, 351118, 351137, G02C 512

Patent

active

060007974

ABSTRACT:
The invention is to embed a stretching spring member 1a, a compression spring member 1b and a supporting member 2 having a large friction coefficient as a nose pad into spectacles, thereby to constitute a displacement prevention mechanism K for preventing displacement of the spectacles. The spectacle to be put on a face comprising: a lens L; an elongated member 1 for hooking the lens onto an ear; the supporting pad 2 for maintaining a distance from the lens to an eye at an appropriate value; the stretching spring member for generating a tensile force Fa; and the compression spring member for generating a compressible force Fb, wherein: the stretching spring member and the compression spring member are built-in into the spectacle so that the tensile force Fa and the compressible force Fb, the latter of which is applied from the lens through the supporting pad onto the face, work cooperatively in a back-and-forth direction when the spectacle is put on; and the supporting pad for contacting with a nose on a sidewall is formed of a soft-type material having a large friction coefficient to constitute the displacement prevention mechanism, thereby enabling to prevent the spectacle from displacing out of in front of the eye.

REFERENCES:
patent: 4932771 (1990-06-01), Nowottny

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