OPTICAL ELEMENTS FOR POWER ADJUSTABLE SPECTACLES
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
May 21, 2015
filing date -
May 21, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
An optical element for use in power adjustable spectacles comprises a front lens and a back lens which can slide laterally with respect to each other to achieve a first relative position and a second relative position. The optical element may be designed to provide good optical performance for far-distance viewing and for near-distance viewing, or to provide good optical performance for near-distance viewing and for intermediate-distance viewing. In some cases, the front lens and the back lens can slide laterally with respect to each other to achieve a third relative position, and the optical element may be designed to provide good optical performance for far-distance viewing, for intermediate-distance viewing and for near-distance viewing. In all cases, the predetermined addition of the prescription is in the range of 0.50 diopters to 3.00 diopters.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully