Matches 301 - 350 out of 437 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5807975 Alkyl sulfide type episulfide compound  
An alkyl sulfide type episulfide compound represented by the following general formula (I) or (II) is herein disclosed: ##STR1## A material obtained by polymerizing/curing the above-mentioned...
5805355 Resin lens  
A lens made of an acrylic resin for use in a laser optical system for an optical disk, in which the acrylic resin has the following characteristics; refractive index (n): n≥1.5, percentage...
5736609 Sulfur-containing urethane-based resin composition, its resin, and optical element and lens comprising resin  
The present invention discloses a sulfur-containing urethane-based resin composition of the present invention is directed to a sulfur-containing urethane-based resin composition which comprises a...
5721039 Synthetic resin layered lens for a vehicle lighting device, method of molding the same and apparatus therefore  
A synthetic resin layered lens for a vehicle lighting device in which an upper lens layer is disposed on a lower lens layer thereby forming a layered lens of integral construction. The lower lens...
5642228 Resin-molded lens having no sink marks and process for producing same  
A resin-molded automotive lens, and a method for producing same, in which sink marks are prevented from being formed in a thin lens surface portion of the lens. In a resin-molded lens having a thin...
5615052 Laser diode/lens assembly  
A laser diode/lens assembly wherein a lens (or multi-lens assembly) is immovably adhered to a housing of a laser diode package. The laser diode package may be a metal can style package having a...
5604549 Press-molded optical element  
A method of molding an optical element numerically analyzes the thermal stress produced on a molded optical element product within a mold in a visco-elastic temperature range or elastic temperature...
5581410 Resin-coupled optical element and method of production  
A resin-coupled lens has a resin layer on at least one surface of the lens and has a light-shielding membrane, wherein the edge surface of the outermost perimeter of the resin layer is covered by...
5581400 Finder optical system with low-hygroscopic organic material  
A finder optical system including an objective system, an image erecting system for erecting an object image formed by the objective system, and an eyepiece system for observing the object image....
5555133 Objective lens for microscope  
An objective lens for microscopes has an optical unit removably disposed at the front end of the objective lens. The optical unit includes at least two kinds of optical elements having different...
5536798 Optical material  
An optical material, comprising a resin composed of a polymer constituted of a first structural unit composed of at least one of the compounds represented by the formula (I), and of a second...
5526185 Method and system for designing color corrected optical systems  
The present invention provides a general system and method for designing arbitrary lens systems with reduced chromatic aberration without the reliance on rigorous trial and error methods and/or...
5523884 Optical beam delivery system  
The present invention is directed to an optical system which includes an image region having at least one light source which directs a beam of light along an optical axis and an object region which...
5502141 Method of making thiol methacrylate or acrylate and a lens made therefrom  
A thiol methacrylate or acrylate compound represented by the formula (1) or (2): ##STR1## wherein R 1 is H or CH and X is selected from: ##STR2## wherein R 1 is H or CH 3 and m is an integer of...
5500767 Objective lens and method of measuring its performance  
An objective lens is corrected for spherical aberration at both an operating wavelength and a measurement wavelength, such that the amount of spherical aberration to develop at the operating...
5450228 Read-write head for an optical tape recorder  
The present invention provides a read-write head for an optical tape recorder comprised of a synchronized scanning transmissive polygon and rotating lens wheel. The transmissive polygon is a...
5420722 Self-registering microlens for laser diodes  
A cylindrical microlens is mounted directly to a laser diode die by using reference edges touching the die at the emitting face and at the top face. Three edges are used to have a stable mounting....
5408360 Plastic lens  
A plastic lens used for an optical system using a laser light source is made of a plastic material having a modulus of photoelasticity at a wavelength of 632.8 nm of larger than zero but no larger...
5404869 Faceted totally internally reflecting lens with individually curved faces on facets  
A radiant energy redirecting system comprising a radiant energy transmitting body structure; the structure comprising multiple elements, each of which acts as a radiant energy redirecting module,...
5400182 Composite glass and resin optical element with an aspheric surface  
In order to provide an optical element with an aspheric surface, as well as a process by which the optical element can be mass-produced with high efficiency and consistent precision, the improved...
5388002 Bird resistant lens  
A bird resistant lens for preventing a light from becoming fouled and obscured by bird droppings. The lens is provided with an unstable wobble member mounted to the lens by a spring. The spring...
5384380 Polymerizable compositions and high refractive plastic lens obtained therefrom  
A polymerizable composition is provided which is constituted by adding isocyanate by 0.1 to 2 equivalent to the alcoholic hydroxyl group in a mixture dissolving component A prescribed below by 20...
5374668 Casting epoxy resin, polythiol and releasing agent to form lens  
The present invention relates to a polysulfide based resin lens, comprising a mixture of at least one epoxy resin having at least two epoxy groups, and at least one polythiol compound having at...
5361168 Lens element and lens barrel  
A flow lens element is obtained by integrally molding a resin layer on a glass member. A relief portion for preventing the resin material from adhering to an outer circumferential portion of the...
5352758 Mercapto compound, its preparation process, and sulfur-containing urethane resins and lenses using the same  
A mercapto compound represented by the following formula (1): ##STR1## is obtained by reacting, in the presence of a mineral acid, thiourea with a compound represented by the following formula (2):...
5329406 Plastic optical elements and a molding mold therefor  
There are provided a plastic molded optical element and a molding mold therefor capable of preventing flash generation as well as making the handling of the molded optical element easy by forming a...
5329363 Projection lens systems having reduced spherochromatism  
A projection lens system for projecting an image from a cathode ray tube (CRT) onto a screen is provided. The spherochromatic aberration of the system is reduced through the use of a first lens...
5310623 Method for fabricating microlenses  
A microlens of any designed configuration is formed as a replica in a photoresist material, and the photoresist material replica is used to reproduce the replica directly in a substrate material.
5300669 Methylphenethyl functional silicones  
An optical matching oil that is immune to timewise variations in its refractive index, that undergoes little increase in viscosity below room temperature, and that also resists crystallization...
5298366 Method for producing a microlens array  
The invention relates to an optical microlens array producing method. The microlens array producing method according to the invention uses an intermediate material forming process for forming an...
5282088 Aplanatic microlens and method for making same  
An aplanatic microlens consisting of a sphere which is less than one millimeters in diameter. The sphere is made of a transparent material and has a plane surface ground into it so that the radial...
5276538 Display device with micro lens array  
An array of optical microelements is produced by press molding, at a high temperature, a transparent glass with a press mold which has a molding surface formed into a shape corresponding to the...
5274502 Molded lens with integral mount and method  
Sealed precision optical assemblies are provided by a mold-in-place (MIP) process wherein a glass preform for a lens or other optical element is molded and sealed directly into a one-piece metal...
5253111 Cemented plastic lens  
A cemented plastic lens is formed of two plastic lenses made of dissimilar synthetic resin materials having different coefficients of thermal expansion. The lenses have mating surfaces that have...
5235463 Method for the making of microlenses for optical applications  
Disclosed is a method for the making of microlenses for optical applications (display for example) resulting from the deposition of a liquid on a substrate, the surface of which has been locally...
5233470 Variable lens assembly  
Disclosed is a variable lens assembly having a water chamber defined with a front lens holder between two flexible, transparent diaphragms and filled with a fluid, and a syringe connected to the...
5227917 Lens and method for producing the same  
A lens is manufactured by preparing a glass material, preparing a molding apparatus for pressmolding the glass material into a lens shape, preheating the glass material or heating the glass...
5225927 Real image type finder having cemented lens with at least one resin lens element  
A real image type view finder comprising at least one cemented lenses. Of the lens components constituting the cemented lens, a lens component is made of resin. The lens component may be made of...
5225508 Optical resin obtained from diethylenically unsaturated monomer  
Disclosed are a diethylenicallyunsaturated monomer represented by the following formula [Ia]: ##STR1## wherein n is an integer of from 1 to 10, and a and b each represent 0 or an integer of from 1...
5169677 Method for forming lens at end portion of optical apparatus, optical signal transmission apparatus, and optical information processing apparatus  
A method for forming a lens at an end portion of an optical apparatus, such as an optical fiber assembly, a fiber optical CRT or an LED array, which method comprises a dipping step wherein the end...
5161060 Camera lens  
A camera lens with a relative aperture of 1:1.4 and a focal length of 35 mm has five components. The first component includes a cemented element which is concave on the object side. The second...
5147959 Optical resin articles  
The invention provides a shaped resin article for optical use which is a three-dimensional reaction product cast from a molding composition essentially comprising a tetrahalobisphenol A...
5148311 Non-fogging transparent coatings  
A transparent, hydrophilic, non-fogging coating is applied to the surface of an object. The coating includes a bilaminar graft formed of two films. The first film, denoted the matrix, adheres to...
5148314 Optical systems employing refractive and diffractive optical elements to correct for chromatic aberration  
Optical structures are disclosed that comprise selected combinations of refractive and diffractive type optical elements wherein net chromatic aberrational effects are minimized in images formed by...
5148319 System for fabricating micro optical elements  
A system for fabricating optical elements includes a source of optical radiation that provides an optical beam, the system includes an intensity controller in the path of the beam. The intensity...
5144485 Lens having a surface treating composition for reflection preventing film  
A surface treating composition for a reflection preventing film comprising at least one surface treating agent selected from the group consisting of a reactive organic polysiloxane compound...
5142462 Illuminating optical system  
The illuminating optical system comprises a light source for emitting a light beam having an elongated sectional shape in parallel with the optical axis thereof, and a condenser lens for focusing...
5135791 Optical device  
An optical device comprising a mixture of a polymer constituted mainly of aromatic vinyl monomer units and polyphenylene ether, characterized in that the average molecular weight of the...
5134522 Projection lens system  
A projection lens system having a first positive lens group which includes a positive lens having a strongly convex surface facing the enlarged side and a negative lens, a seond negative lens group...
5132384 Optical material of low specific gravity and excellent impact resistance, optical molding product using the optical material and manufacturing method thereof  
The present invention discloses an optical material having excellent transparency, impact resistance and heat resistance and having a low specific gravity and a high refractive index comprising a...
Matches 301 - 350 out of 437 < 1 2 3 4 5 6 7 8 9 >