Abstract: An ornamental composite material has a covering of an Ni-, Au-, Ag- or Cu-base alloy, and a core of a mineral powder aggregate. A layer of a metal different from the metals of the alloy of the covering can be clad on the inner surface of the covering as needed. The ornamental composite material is preferably used for various parts of a spectacle frame.

Abstract: A spectacle frame comprising two components which constitute a supporting structure and a face assembly, respectively, mounted removably to each other, wherein one of the components comprises at least one locking element and the other component comprises a recess adapted to receive the at least one locking element being movable between a rest position wherein it allows the components to be separated from each other and an active position wherein the at least one locking element cooperates with the recess when the supporting structure and the face assembly are mounted onto each other, so as to firmly connect the supporting structure to the face assembly.

Abstract: Sunglasses have transparent panes extending in frusto conical planes. The sunglasses frame construction permits ease of pane removal and replacement.

Abstract: A metallic eyeglass-frame, in particular its each bow has a core-to-covering structure in which high Ni-content covering is clad to the surface of a super elastic core made of Cu-Sn-Zn, Cu-Al-Zn or Cu-Al-Ni alloys in order to reduce plastic deformation during use and assure high workability in production, thereby allowing the eyeglass-frame to constantly rest stably on the wearer's facial construction with no increase in uncomfortableness and fatigue on the wearer.

Abstract: A metallic eyeglass-frame, in particular its each bow has a core-to-covering structure in which high silver or gold-content covering is clad to the surface of a super elastic core made of Cu-Sn-Zn, Cu-Al-Zu or Cu-Al-Ni alloys in order to reduce plastic deformation during use and assure high work ability in production, thereby allowing the eyeglass-frame to constantly rest stably on the wearer's facial construction with no increase in uncomfortableness and fatigue on the wearer.

Abstract: This specification discloses a spectacle frame of titanium or titanium alloy having at least one location a brazed portion of titanium or titanium alloy joined with titanium or titanium alloy, or of titanium or titanium alloy joined with other metal, characterized in that silver-zinc alloy comprising 70-95% by weight of silver and 5-30% by weight of zinc is used as the brazing filler metal material for brazing.

Abstract: A lateral view extender device for Homonymous Hemianopsia is disclosed. The device is particularly useful with eyeglasses having a pair of lenses and a nose bridge separating the pair of lenses. The device includes a dichroic half lens having the combined optical properties of a reflector and a see through lens and means for fixing the dichroic half lens to the nose bridge of the eyeglasses in optical registry with one lens of the pair of lenses for providing at least one optical path through the one lens of the pair of lenses and the dichroic half lens and at least one other optical path over the dichroic half lens. The dichroic lens forms an interior angle with the one lens of the pair of lenses for providing mirror images on the dichroic lens within the one optical path thereby extending the lateral view of a person suffering from Homonymous Hemianopsia proportionally to the interior angle formed between the dichroic lens and the one lens of the pair of lenses.

Abstract: A lens system for variable refraction comprising a solid housing having a single internal chamber completely filled with a plurality of imiscible liquids of preselected densities and refractive indices. The chamber is of a form such that the amount and distribution of each liquid in the optical portion of the system is altered when the system is tilted, producing a change in refractive power. The system may be incorporated into spectacle lenses or contact lenses to provide a continuous spectrum of refractive power, or into contact lenses to provide bifocal capability.

Abstract: An eyeglass-frame, in particular its each bow is made up of a Ti-Ni base alloy core of super elasticity and high Ni-content sheath cladded together so that it reduces plastic deformation during use and assures high workability in production, thereby the eyeglass-frame constantly resting stably on the wearers facial contour with no increase in discomfort on the wearer.

Abstract: A frame and sterile sleeve and eyedropper combination in kit form for therapeutic self-administration of medication to the eyes and comprised of an eyeglass frame with omni positionable guides slidable through lens openings and with bores therethrough for the reception of sterile sleeves and with guide-adjustment-lock means for the selective positioning of said guides, the sleeves being expendible tubular elements adapted to receive and position the eyedropper, and the guides having a peripheral target focused upon by the eye to expose a portion of the conjunctiva.

Abstract: A method and apparatus for assisting individuals to achieve the mental and physical relaxation which often characterizes successful meditation. Minute saccadic eye movements are monitored, and the individual is made conscious of any such movement by a sensible signal, such as an audible tone. By reducing undesired saccadic movements, the individual attains the desired state of psycho-physical relaxation. The preferred apparatus, carried by eyeglasses-type support, utilizes reflections of non-visible radiant energy to monitor eye movement.

Abstract: An eyeglass apparatus having a variable focal length lens and an associated method for varying the focal length of the lens uses a lens having a focal length which is variable as pressure along the lens is varied. Focal length adjusting mechanisms carried by the eyeglass frames provide for manual or automatic adjustment of the lens focal length.

Abstract: The invention provides a spectacle frame having on its inner (rear) face a circumferential channel, and frame-to-face seals carrying a mating ridge on the outer (forward) face of each seal. The spectacle frame is converted to an air-vented safety goggle, to a watertight swimmer's goggle or to an underwater diving mask by mating the appropriate frame-to-face seal with the channel in the frame; the frame can carry plano or prescription ground lenses and may be provided with temples or with an elastic headband.

Abstract: This invention relates to variable focus eyeglasses comprising flexible and rigid optical components. The rigid components act as molds which modify the optical properties of the flexible components when the flexible and rigid components are engaged.At least one of the flexible or rigid components is movable along an anterior-posterior axis, resulting in the distortion and restitution of a flexible component by one or more rigid components thereby altering the optical properties of the system.A spring mechanism located in the nosepiece or bridge portion of the eyeglasses may be used to facilitate the anterior-posterior movement of the movable components.

Abstract: Spectrum eyeglasses to provide a tranquilizing field of vision to the user are disclosed. The eyeglasses of the present invention comprise a frame mounted in front of the eyes of the user, an opaque wall supported by the frame positioned to prevent the entry of ambient light to the eye, a light source, a color wheel for selectively coloring light emitted from the light source, an opening formed in the opaque wall to expose the user's eye to a selectively varied field of color that is tranquilizing and sleep inducing.

Abstract: Applying facial make-up, especially to the eyes, is difficult for those who wear prescription lenses. Optical aids are available but are generally inconvenient to carry and use due to their size and limited adjustability. A compact, optical apparatus is provided which may be easily carried in a purse, or the like, and is adjustable for use with an associated mirror.

Abstract: Apparatus for fixing eyeglasses within a protective mask is disclosed, the eyeglasses being adjustable vertically. An attaching bar is fixed to the viewing glass of the mask, the attaching bar having two or more notches vertically spaced. A carrier has the eyeglasses attached, and the carrier has tabs to be received by the notches. The vertical position of the eyeglasses is fixed by selecting the appropriate notches.

Abstract: Improved eyeglasses for use by color blind individuals or viewers. The eyeglasses are constructed to have two lenses, one of which is clear and the other of which is colored. Each lens is formed to have a reflective or mirror surface as viewed from the front of the eyeglasses. When worn by a color blind viewer, the combination of lenses improves the color blind viewer's ability to discriminate between different colored objects while the reflective or mirror surfaces cause the lenses to appear to be identical to other persons or viewers.

Abstract: The specification discloses a multifocal ophthalmic lens to provide a variable focusing power lens for near and farsighted corrected vision. The lens includes a first and second lens element. First and second electrodes are disposed between the lens elements, and a film of liquid crystal is disposed between the electrodes. A voltage supply source is provided for applying a voltage to the electrodes to vary the index presented by the liquid crystal film to thereby provide a variation in the index of refraction and focal length of the lens elements. Circuitry is provided for varying the voltage applied to the electrodes to determine the focusing power of the lens.

Abstract: A spectacle lens comprises a liquid crystal layer and electrode assembly sandwiched between a pair of identically curved glass plates and layers of polarization material on the outer surfaces of the plates. The optical density of the lens is controlled by applying across the electrodes variable duty cycle voltage pulses having a magnitude greater than a threshold voltage of the liquid crystal layer and a frequency at least as great as the critical flicker fusion frequency of the eye. The duty cycle of the pulses is controlled in response to ambient light intensity measured by a photocell. In order to reduce response time and increase operating lifetime of the liquid crystal layer, tir-level (+V, 0, -V) rather than bilevel (+V, 0) pulses may be applied to the liquid crystal electrodes.

Abstract: A metal frame for eyeglasses is provided which includes a pair of rims, each of which is configured to surround and support an eyeglass lens, and a locking bar secured to each of the rims. The locking bar and the rim to which it is secured are separated by a separation slot so as to divide the rim and the bar into first and second rim portions and first and second locking bar segments respectively. A jacket having an internally threaded bore is coupled to the first locking bar segment to prevent movement thereof relative to the first locking bar segment towards the second locking bar segment, and a locking bar screw is detachably coupled to the second locking bar segment and is in threaded engagement with the bore of the jacket.

Abstract: Improved biomechanically focused eyeglasses for facial wear comprise a frame, adjustable focus lenses, means for securing the lenses to the frame, means for adjusting the focus of the lenses, and means for actuating the adjusting means in response to a voluntary anatomical action which does not involve the hands. In an embodiment wherein the adjustable focus lenses comprise liquid filled cells, each having an elastic surface, means for equalizing the fluid volumes which effect focus of the cells is disclosed. An improved variable focus lens is also disclosed.

Abstract: The main components of the frame are constituted by slats of wood arranged in layers, shaped and adhesively assembled.

Abstract: An eyeglass element of spectacles, to which a component, such as a nose piece or a temple piece of the spectacles or an ornamental piece, is to be affixed, includes a through hole having an enlarged end portion in which an actuating portion of a connecting member which is threadedly connected to the component is received when the connecting member assumes its tightened position. The connecting member may be configurated as a nut having a transverse slot extending across a threaded bore of the nut, and then a screwdriver having a bifurcated end portion may be used for tightening the nut and subsequently the portion of the stem onto which the nut is threaded which extends beyond the nut may be severed from the remainder of the stem.

Abstract: Safety spectacles have an inner frame of hard elastic plastic material extending from one end piece, across the bridge to the other end piece. The base plates for the side piece hinges are embedded in the inner frame. A continuous wire is embedded in the inner frame. The inner frame is completely covered with a soft, elastic, polyurethane foam several millimeters thick which determines the shape of the spectacles.

Abstract: An eyeglass frame is provided with braces that extend downwardly and rearwardly from the top of eyeglass lens holders to pass outboard adjacent and at an angle to rearwardly extending eyeglass temples. Adjustable biasing means are provided in the braces so that the temples can be biased inwardly toward each other against the head of a wearer to a selected degree. The braces apply an inward bias well to the rear of the temple hinges.

Abstract: A vision compensation system includes a lens receiving frame with a pair of lens members, at least one of which has variable optical compensation capabilities. Carried by the frame are means for producing a signal as a function of the relative angular positions of the eyes of the wearer and means responsive to that signal for changing the optical characteristics of the variable lens to provide compensation for impaired accommodative capacity of the wearer's eye.

Abstract: An article coated with an abrasion resistant coating is disclosed in which the coating comprises a polyvinyl acetal having an hydroxyl group content, calculated as polyvinyl alcohol, of from 35 to 50 percent by weight and silicic acid, the weight ratio of silicic acid to polyvinyl acetal being from 2:1 to 4:1.

Abstract: Wide angle spectacles comprising a spectacle frame and a wide angle lens system attached to the frame. The wide angle lens system includes at least first and second lenses. The lenses are arranged so that light passes in series first through the first lens and then through the second lens in travelling to the eye of the user. The lens system materially increases the peripheral vision of the user.

Abstract: Homonymous-hemianopsia corrective device, comprising first and second reflectors, provides corrected vision over an overall field of view which is greater than the limited angular field of view of uncorrected vision of a person suffering from homonymous hemianopsia.

Abstract: A sunbather's eyes are shielded by eye covers of opaque material while a frame supporting the eye covers transmits tanning radiation to the wearer's face for even tanning of the entire face including the area around the eyes. The frame is made of plastic material that is substantially transparent to ultraviolet light and the eye covers are adjustably mounted on the frame.

Abstract: Warpage-free spectacles comprised of plastic lenses and plastic frames wherein the frames are constructed of materials having the same or lower tensile elastic modulus and/or the same coefficient of thermal expansion as the lens material.

Abstract: Disclosed are spectacle frames or single parts thereof having a moderate heat distortion temperature, i.e. approximately 60.degree. to approximately 70.degree. C. The spectacle frames or single parts thereof are composed of a cured polyurethane prepared by the reaction of (1) a mixture of two types of diisocyanates represented by the following formulae (A) and (B): ##STR1## where R.sub.1 is an aliphatic hydrocarbon group of 1 to 12 carbon atoms and R.sub.2 and R.sub.3 are hydrogen or an aliphatic hydrocarbon group of 1 to 12 carbon atoms, ##STR2## where X is oxygen or an aliphatic hydrocarbon group having 1 to 5 carbon atoms, with (2) a polyhydroxy compound having a hydroxyl value of at least 150 and an average molecular weight of 300 to 5,000. The ratio in amount of the diisocyanate of type (B) to the total of the two types of diisocyanates (A) and (B) is 0.2-0.7 by mole.

Abstract: A coated abrasion-resistant optical element, such as an eyeglass lens, formed of a typical rigid polymeric substrate of relatively low scratch resistance coated on at least one surface with a relatively soft, resilient, and tough transparent polymeric material. The essential characteristics of the coating material resulting in an abrasion-resistant protective film for the optical element are disclosed.

Abstract: There is disclosed an eyeglass or spectacle configuration which includes a pair of viewing lenses coupled together by means of a bridge element which further includes a backing suitably treated to enable retention of the same on the skin of a user in proximity to the user's forehead to thereby suspend the lenses in front of the user's eyes; thus eliminating conventional temple members and nose bridges typically and commonly associated with the prior art eyeglasses.

Abstract: A spectacle structure having a plurality of flexible portions formed in head engaging components thereof is disclosed wherein the flexible portions permit unidirectional bending of the head engaging components of the spectacle structure to thereby conform to and exert inwardly directed pressures on the head of the person to support the spectacle structure thereon, said spectacle structure engaging the head portions for support with an absence of support by the nose or ears. The spectacle structure includes lens means depending from a front frame member and a pair of elongated temple members hingedly connected to respective opposite end portions of the front frame member. The head engaging components of the spectacle structure are of a combined length such that one of the temple members is in crossing and overlying relation with the other of the temple members when in an open and relaxed position.