Variable focus lens and spectacles

G - Physics – 02 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G02B 26/02 (2006.01) G02B 3/14 (2006.01)

Patent

CA 2657354

The invention provides a variable focus lens, comprising a ring with a front surface and a rear surface. A flexible membrane is held between the front surface of the ring and a generally rigid transparent front cover, and a rear cover is attached to the rear surface of the ring (optionally with a second flexible membrane sandwiched between the rear cover and the ring). A cavity is formed between the flexible membrane and the rear cover (or the second flexible membrane) is filled with a liquid, and the amount of fluid in the cavity can be varied to vary the curvature of the flexible membrane and so vary the optical characteristics of the lens. The ring of the lens may be coloured, and may be transparent, translucent or opaque. Alternatively, a decorative cover may be attached to the front of the ring to give the appearance of a frame. The lenses may be used in variable focus spectacles.

L'invention concerne un verre à foyer variable, qui comprend un anneau comportant une face frontale et une face arrière. Une membrane flexible est maintenue entre la face frontale de l'anneau et un couvercle frontal transparent généralement rigide, et un couvercle arrière est fixé sur la face arrière de l'anneau (une seconde membrane flexible étant éventuellement intercalée entre le couvercle arrière et l'anneau). Une cavité formée entre la membrane flexible et le couvercle arrière (ou la seconde membrane flexible) est remplie d'un liquide, et la quantité de fluide dans la cavité peut être modifiée pour faire varier la courbure de la membrane flexible et faire varier ainsi les caractéristiques optiques du verre. L'anneau du verre peut être coloré, et peut être transparent, translucide ou opaque. Sinon, un couvercle décoratif peut être fixé sur l'avant de l'anneau pour donner l'apparence d'une monture. Les verres peuvent être utilisés dans des lunettes à foyer variable.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Variable focus lens and spectacles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable focus lens and spectacles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable focus lens and spectacles will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1892000

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.