Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses
Patent
1998-02-08
1999-09-21
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
351158, 351165, G02C 100
Patent
active
059561149
DESCRIPTION:
BRIEF SUMMARY
SUBJECT OF THE INVENTION
The present invention relates to improvements made to spectacles so as to provide the person wearing them with an artificial "horizon".
The term "spectacles" must be understood in the widest sense, as applying both to neutral spectacles, spectacles having correcting lenses and sunglasses and to accessories having the identical function which may be mounted on spectacles, such as clip-ons.
In reality, the present invention applies more particularly to a spectacles frame with or without lenses and having an artificial horizon.
TECHNICAL FIELD
Many factors, both physiological and psychosomatic, can cause sensations of nausea of the seasickness type, this term extending, of course, to similar symptoms such as car sickness, air sickness, etc.
It is obvious that these symptoms are caused by movement, essentially rolling movement, and secondarily pitching movement, with the loss of the usual spatial references.
More particularly at sea, the unpleasant symptoms are lessened or eliminated by keeping one's gaze on the horizon line. However, as soon as the usual references are lost, and in particular when, for example, a person is inside a boat and more particularly when it is attempted to read or write for example, the table or book gives the impression of "slipping away", and the risk of seasickness increases.
In order to remedy this phenomenon and increase the wearer's comfort, the invention is intended to substitute the actual horizon line as perceived with an artificial horizon giving the impression to the wearer of a stable horizon line despite the fluctuations which he suffers due to the effect of the rolling.
It is apparent that the use of spectacles of this type gives the wearer a situation of stability which contributes to reducing the symptoms generally associated with seasickness.
SUMMARY OF THE INVENTION
Various techniques have already been proposed for allowing rotation of a lens in a spectacles frame. Thus, patent U.S. Pat. No. 4,948,244 describes a device in which the spectacle lens, which in fact consists of multiple lenses, may rotate so as to allow the type of lens used to be modified according to the wearer's wishes. This device is not intended to create an artificial horizon.
Publication EP-A-0603092 describes a display system mounted on a helmet, which is intended for pilots so as to prevent them becoming spatially disoriented and which recreates an artificial horizon in the region called the peripheral vision region. This device is not mounted on spectacles and is intended for very specific uses. Nor is it conceivable that it be worn permanently.
Document WO-A-9100541 describes spectacles provided, on the lenses, with lines which are essentially arranged either horizontally or vertically and which enable the person wearing the spectacles to line up his body, his head and his hands with the object which he wishes to look at, such as, inter alia, a golf ball.
Document U.S. Pat. No. 5,355,182 describes a pair of spectacles which are also intended to be worn by a golfer for the purpose of enabling him to line up the golf ball with the target. These spectacles are provided with lenses essentially having two differently darkened regions separated by a line which makes an angle of between 5 and 150 with the horizontal.
Document U.S. Pat. No. 2,535,321 describes adjustable spectacles having two regions separated by a fixed strip. These two regions are essentially intended for two different types of sight.
Document U.S. Pat. No. 4,172,662 describes an optical viewing device comprising a series of lenses and, among other things, a diaphragm provided with an artificial horizon. This device is intended to measure angles within a microscope.
Document U.S. Pat. No. 4,185,903 describes a device which enables a photocell on a camera to be spatially stabilized. This very complex device comprises, among other things, means to allow this spatial stabilization of the photocell.
SOLUTIONS PROPOSED BY THE INVENTION
The invention relates to spectacles in the sense mentioned above, a
REFERENCES:
patent: 2535321 (1950-12-01), Rooney
patent: 4172662 (1979-10-01), Vogel
patent: 4185903 (1980-01-01), Land
patent: 4477158 (1984-10-01), Pollack et al.
patent: 4948244 (1990-08-01), Jones
patent: 5177510 (1993-01-01), Peters et al.
patent: 5355182 (1994-10-01), Barbera
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