Matches 251 - 300 out of 437 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
6147809 Method for correcting a lens optical aberration  
6147751 Lens refractometer  
A refractometer and a method for measuring the refractive index of a lens, wherein a thin insert in the form of a pad of a flexible transparent material attached to a rigid transparent sheet, is...
6141153 Optical scanning device and optical apparatus for reading and/or writing information in an information plane provided with such a device  
An optical device for optically scanning an information plane includes a radiation source for supplying a scanning beam, and an objective system for focusing the scanning beam to a scanning spot on...
6137632 Method and apparatus for lossless beam shaping to obtain high-contrast imaging in photon tunneling methods  
An axiconic telescope that receives a collimated input light beams and includes a first axicon and second axicon. Depending on the distance between the two axicons, the input collimated beam is...
6118590 Small-type imaging optical system  
A lens element is disclosed which satisfies the following three conditions TBL ______________________________________ │Δh/R│ ≥ 0.1 . . . Condition (1) Φ ≤ 8 mm . . . Condition (2) ...
6118578 Simplified dual field of view afocal  
An infrared afocal lens assembly for providing an observed magnified IR ie scene with a field of view and a substantially less temperature dependent performance. The assembly includes a collecting...
6115175 UV image forming optical system  
A UV image forming optical system includes a collimating lens for collimating light emitted from a UV light source, an imaging lens for forming an image of the collimated light transmitted through...
6087014 Optical coatings of medium refractive index  
The invention relates-to optical coatings of medium refractive index, having refractive index values of about 1.6 to 1.9, which can be obtained by vapor deposition of vapor-deposition materials...
6084718 Method and apparatus for high energy propagation back focus control  
A method and apparatus for adjusting the location of the back focus of a lens while maintaining the primary focal point location thus eliminating the need to position external components around the...
6081381 Apparatus and method for reducing spatial coherence and for improving uniformity of a light beam emitted from a coherent light source  
A method and apparatus for elimination of speckle pattern in optical system by reducing coherence. The invention is based on the use of a rotating microlens array having a rotational speed chosen...
6080338 Water soluble photochromic compounds, compositions and optical elements comprising the compounds  
Described are novel water soluble photochromic naphthopyran and benzopyran compounds having an alkylaminoalkylamino group on the pyran portion or on the pyran portion and the naphtho- or...
6078430 Optical lens and method of making the same  
An optical lens and method of making the optical lens including a substantially arc-shaped cutting surface on a flange section for easily removing a gate section by cutting. A flange section is...
6075652 Convex-microgranular surface structure  
The surface and/or interface of a lens or the like is formed with a convex-microgranular surface. For this purpose, a stamper 108 having a concave-micro-granular transfer-molding surface...
6072636 Anamorphic attachment lens  
An anamorphic attachment lens is disclosed that consists of a single lens element which is afocal, so that light rays which are incident onto a photographic object side of said anamorphic...
6061184 Attachment lens  
An attachment lens is provided for an annular fiber optic illumination system which extends along a rotational axis for distributing the intensity of light beams emanating annularly from a light...
6055111 Plastic lens and method of making a plastic lens  
A plastic lens which is easy to mold and has favorable optical precision. This plastic lens has a flange at the outer periphery of an optically functioning portion, a part of the peripheral surface...
6052232 Molded plastic lens  
A plastic lens is molded from a suitable transparent thermoplastic resin, and has a lens body and an annular portion integrally formed around the lens body. The annular portion has an annular...
6052233 Taking lens and camera equipped with the same  
A taking lens consisting of a positive power single lens element positioned behind an aperture stop of a photographic camera having an image format of 16.7×30.2 mm, and having an object side...
6049430 High numerical aperture objective lens manufacturable in wafer form  
A composite micro-lens for use in an optical or magneto-optical information storage system, made up of one or more lens elements which, when coupled in assembly, provide a desired numerical...
6038077 Optical imaging system  
Imaging conditions for the aperture rays of an axial pencil, for example Abbe's sine condition, determine how an object volume will be imaged in the image space of an optical lens system. The...
6028712 Optical system and method for providing corrected optical images  
An optical system includes a housing having an axis of elongation, and a non-spherical window affixed to the housing. An optical corrector, preferably in the form of an aspherical strip of...
6028711 Reading lens  
Disclosed is a reading lens consisting of one glass lens and first and second plastic lenses. A positive diffraction lens structure being is formed on one surface of the surfaces of the first and...
6019915 Optical lens and a process for preparing the lens  
Disclosed are (1) an optical resin composition comprising Component A: a thiourethane prepolymer compound prepared by reacting a polythiol compound having at least 3 functional groups and an...
6014264 Embedded fiducials in optical surfaces  
Embedded fiducials are provided in optical surfaces and a method for embedding the fiducials. Fiducials, or marks on a surface, are important for optical fabrication and alignment, particularly...
6014263 Optical lens and method of preventing clouding thereof at high temperatures  
A method for preventing clouding of a lens employed in a high-temperature oxidizing environment, an example of which is a lens of a pyrometer used to sense exhaust gas temperature (EGT) of a gas...
6014272 Retroreflective lens  
A retroreflective lens includes: a single positive power lens element with an index of refraction N 1 and thickness T 1 ; a single negative power lens element with an index of refraction N 2 and...
6011648 Optical system having an optical element made of resin  
An optical system includes a first optical element formed of a noncrystalline polyester resin having a copolymer ratio of 9,9-bis [4(2-hydroxyethoxy) phenyl]fluorene in a range of 35 molar percent...
6002524 Flexible lens  
A flexible lens assembly. The flexible lens assembly includes a long, flexible structural layer and a first optical layer coupled to the long, flexible structural layer. The optical layer is shaped...
6002525 Correcting lens distortion  
Lens distortion may be corrected using a least squares curve fitting method to determine a straight line approximation for the curvature caused by lens distortion. An image made of a rectangular...
5998096 Process for producing polymerization or crosslinking rate-distributed article and process for producing lens, lens array or waveguide using the process  
A process for producing a polymer or a crosslinked article having a region in which the polymerization rate or crosslinking rate is varied is disclosed, comprising irradiating a photopolymerizable...
5999326 Achromatic telescope eyepiece without doublets  
A telescope eyepiece comprising a series of single-element lenses in a combination that cancels chromatism. A negative field lens produces chromatism that is partly cancelled by an intermediate...
5995294 Gradient index lens reflector  
A gradient index lens which reflects light and focuses a corresponding image. The reflector can be easily incorporated to optical devices, and is particularly suitable for encoders position...
5995293 Optical components having magnetic thin films for orientation and method of assembling same  
A self-orienting optical component advantageous for assembling sub-optical assemblies in which the components must be precisely aligned comprises a component having a magnetic film deposited on a...
5994248 Optical lenses and processes of manufacture  
The invention relates to lenses such as aspherical lenses and to a process for their manufacture. According to the invention, the lens is composed of a glass matrix including the constituents below...
5995304 Plastic lens  
A plastic lens has a flange provided with a reflecting plane, so that its inclination upon assembling can be detected and adjusted efficiently and accurately. This plastic lens has the flange at an...
5991099 Adjustable chromatic correction lens  
An imaging lens device at f/4 has zoomlike variable chromatic and spherochromatic correction for imagery in each of the astronomical U, B, V, and R bands. This lens system can thus take advantage...
5982551 Optical encoder wheel with split lens ring  
Disclosed is a split-lens for grating wheel comprising a disk body and a ring-lens around the peripheral of the disk body wherein said ring-lens comprises alternately-arranged opaque parts and...
5982565 Plastic lens and method of making the same  
A plastic lens includes an optically functioning section, a flange section disposed at an outer periphery thereof, a reference surface formed at an outer peripheral portion of the flange section...
5981634 Method of preparing photochromic articles  
A method of preparing photochromic materials useful for optical applications, and photochromic materials prepared by such method, are described. Such method comprises polymerizing a blend of a...
5973846 Offset spectra lens system for a two spectra automatic focusing system  
An improved auto-focus system for a digital camera has a lens designed to have the focus of two spectra offset from each other by a predetermined amount. The two offset spectra are used to...
5971627 Method for optically connecting an optical element, for example an end portion of an optical fibre, with a lens  
A method for optically connecting an optical element, including glass, for example an end portion of an optical fibre having a core consisting of glass, to a lens consisting of glass. The optical...
5966243 Process for correcting wave front deformations  
A process is disclosed for correcting wave front deformations caused by an optical system (5). The wave front deformations are measured by means of a wave front measurement instrument. Based on the...
5966252 Bravais lens  
A Bravais lens includes a front, positive power lens group and a rear, negative power lens group. These lens groups, in combination, provide the Bravais lens with a negative focal length and a...
5946141 Apochromatic lens system for relaying laser beam waists  
A lens system comprises a plurality of lens elements including at least one positive power lens element and at least one negative power lens element, the plurality of lens elements having radii of...
5914174 Lens or semi-finished blank comprising photochromic resin compositions  
A resin is provided comprising a mixture of at least two polymerizable components, at least one photochromic additive, at least one additive and at least one polymerization initiator. The mixture...
5908876 Optical resin composition comprising a thiourethane prepolymer and use thereof  
Disclosed are: (1) an optical resin composition comprising Component A: a thiourethane prepolymer compound prepared by reacting a polythiol compound having at least 3 functional groups and an...
5900986 Columnar focal lens  
A lens is described that produces a columnar focus comprised of a continuum of focal points at varying distances from the principal plane of the lens aligned along the axis of the lens. The lens...
5880170 Photopolymerizable composition and transparent cured product thereof  
A photopolymerizable composition comprising: (I) a photopolymerizable oligomer represented by the following formula (1), ##STR1## and/or by the following formula (2), ##STR2## wherein R 1 is a...
5871653 Methods of manufacturing micro-lens array substrates for implementation in flat panel display  
Three process flows for manufacturing the micro-lens array substrates are disclosed. The process flows consist of two main parts. The first part of the process flows involves fabrication of a...
5818644 Gradient index optical element and method for making the same  
A gradient index optical element comprises a component capable of absorbing light unnecessary for image formation and observation. The optical element is made according to a solgel process wherein...
Matches 251 - 300 out of 437 < 1 2 3 4 5 6 7 8 9 >