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4644025 |
Lens materials of high refractive indexes
Compositions each comprising a copolymer of a specific allylic or (meth)acrylic compound of an iodine-substituted benzoic acid derivative and a comonomer have a refractive index n D 20 of at least...
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4632969 |
Resin for high-refractivity lenses
Disclosed herein are a resin for high-refractivity lenses, formed by copolymerizing at least one unifunctional monomer selected from the group of compounds represented by the following general...
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4601548 |
Microlens
A microlens for use with an optical fiber or the like. It comprises a single lens having a diameter of about 0.5 mm. It provides an ideal combination of the length of the lens with the refractive...
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4598133 |
Organic glass for optical parts
Organic glass having a high refractive index and excellent other physical properties and being suitable as materials for optical parts such as lenses and prisms. The organic glass comprises a...
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4564268 |
Optical system for semiconductor laser
An optical system for focusing a light beam emitted from a semiconductor laser is disclosed which comprises a lens of a numerical aperture NA satisfying a relation ##EQU1## (where λ and ΔZ...
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4550482 |
Method of constructing a beam spread lens
A method of constructing a lens of the type receiving a collimated beam of input radiation for transmitting a narrow sheet of output radiation of substantially uniform intensity over an angular...
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4542201 |
Resin for high-refractivity lenses and lenses made of same resin
Disclosed herein are a resin for high-refractivity lenses, formed by copolymerizing at least one carbonate compound represented by the general formula (I): ##STR1## wherein X is a hydrogen,...
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4521577 |
Liquid polymerizable compositions of a carbonate oligomer, an allylcarbonate and vinyl acetate
A polymerizable liquid composition is disclosed, intended for preparing polymerizates having outstanding optical and physical properties, said composition consisting of a bis (allylcarbonate) of a...
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4475796 |
Epidark illumination system
An Epidark illumination system wherein an optical member for forming the image of a light source is provided in a dark field light path to illuminate a sample with the light from the image of the...
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4439529 |
Glass and glass objects
Glasses consisting of 45-55 mol. % P 2 O 5 , 15-40 mol. % BaO, 5-15 mol. % Li 2 O, 5-35 mol. % PbO, 0-2 mol. % Al 2 O 3 and 0-6 mol. % F are suitable for the precision pressing of lenses.
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4420225 |
Lens of a homo- or copolymer of a fluorine containing styrene polymer
A homopolymer or copolymer which contains, as a monomer unit, at least one styrene of the formula ##STR1## in which R 1 , R 2 and R 3 independently of one another denote hydrogen, fluorine or...
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4417790 |
Finished ophthalmic lens comprising an optical smooth coating over a rough-surfaced base
A cut and/or ground ophthalmic lens surface is finished to optical smoothness and clarity by direct coating with a transparent liquid material which is curable into a clear, tough and tenacious...
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4405207 |
Method of assembling a gradient index lens array having reduction properties
A method of assembling a plurality of gradient index fibers into a lens array capable of transmitting a reduced or enlarged image is provided. The fibers, in either one or multiple row...
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4393184 |
Lens having a high refractive index with a low dispersion
A lens having a high refractive index with a low dispersion produced by copolymerizing a polyfunctional allyl monomer with at least one monomer selected from the group represented by the general...
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4361379 |
Surgery microscope with cut-through form lens with a light barrier
The invention relates to a surgery microscope with a front lens having at least one displaceable element through which the light beams can be passed in addition to the observation beams. The...
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4348484 |
Precision pressed glass object, glass, method of preparing glass
Glass objects, lenses in particular, can be pressed with precision from a glass which contains 45-55 mol. % P 2 O 5 , 15-40 mol. % BaO, 5-15 mol. % Li 2 O, 5-35 mol. % PbO, 0-2 mol. % Al 2 O 3 ...
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4343857 |
Coatings for optical systems
A coating for optical members such as acrylic or polycarbonate comprising prehydrozyled alkyl silicate, polysilicic acid and monocarboxylic acid dispersed in an aqueous vinyl interpolymer and an...
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4342863 |
Plastic lens
A plastic lens composed of a cured product of a mixture or a reaction produce of (A) a compound containing at least 2 unsaturated cycloacetal groups per molecule, (B) a compound containing at least...
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4327972 |
Redirecting surface for desired intensity profile
An improved illuminating system for redistributing incident radiation, having a non-uniform intensity distribution, to resultant radiation, having a narrower desired intensity distribution in a...
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4296740 |
Modular solar insolation panels
A modular system of solar insolation panels having sun tracking capability and adapted to be installed directly upon a roof structure and integrated with the surrounding roofing, and comprised of...
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4296143 |
Method of producing microlenses
Microlenses which are easy to handle are produced by providing rotation-symmetrical recesses in a glass plate, depositing vitreous layers by means of a vapor deposition process onto the plate,...
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4229228 |
Coating composition
A coating composition which results from hydrolyzing 35 to 70 weight percent tetraethyl orthosilicate and 60 to 20 weight percent of certain silane is useful for providing abrasion resisting...
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4227950 |
Direct casting method for producing low-stress glass/plastic composite lenses
A glass-plastic composite lens combining a glass element with a high-shrinkage thermosetting plastic is provided in accordance with a direct casting process comprising a consolidation heating step,...
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4225698 |
Optical components consisting of aromatic polyesters molded in the form of an optical lens
Thermoplastic aromatic polyesters comprising cocondensed bisphenol residues generally have a refractive index n d of from 1.60 to 1.66, an Abbe coefficient v d of from 27 to 21 and a color...
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4189207 |
Deep focus fiber optic lens
A lens comprising a plurality of identical straight optical fibers arranged in a bundle with at least a portion of each fiber treated to suppress internal reflections, so that each fiber transmits...
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4029395 |
Method for altering the focal zone of a lens system
A method for altering the lateral dimension of the focal zone produced by an integral ultrasonic lens system. The method comprises the steps of removing a volume of lens material from the integral...
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3912400 |
Molded binocular gun sight lens structure
A lens structure for binocular sighting of firearms and other sighted devices having an axially elongated, plano-convex body made of transparent molded material. The body includes a minute...
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3867235 |
OPTICAL VIEWPOINT
Optical viewports are disclosed which comprise an optically clear, relatively brittle, layer, such as glass, and an optically clear, flexible, tough polymeric film weakly bonded to the back of the...
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3811753 |
COATED OPTICAL COMPONENT MADE OF PLASTIC
An optical component made of plastics, wherein only one surface of a plastic substrate has an evaporated coating thereon, said coating having a thickness of approximately 1μ to 10μ and being of a...
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3649098 |
SELF-RETAINING FIBER OPTIC LENS
In a preferred form, this disclosure relates to a lens structure of a fiber optic assembly and which is adapted to be detachably connected to an apertured panel. The lens structure comprises a...
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3614198 |
THIN-FILM OPTICAL DEVICES
Thin-film optical devices are disclosed which function within the plane of a thin-film as lenses or prisms. They function in two dimensions, since the thin dimension of the film serves to guide the...
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3551021 |
HIGH-POWER MAGNIFIER
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3534291 |
APPARATUS FOR IMMERSION OF FACE PUMPED LASER DEVICES
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3368078 |
Radiant energy sensitive device
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3132559 |
Optical system for transparency projection
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3131595 |
De-magnifying optical system for transparency projection
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2964501 |
Glycol carbonate addition polymers
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