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7423801 |
Lens with SLM
Apparatus for enhancing vision of a user includes a focal modulation device ( 22 ), which is adapted to focus light from objects in a field of view of the user onto the retina while alternating...
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7412158 |
Deeper depth of field for video
A digital camera apparatus has a sensing surface that captures images at a first resolution. A derivative of the captured image is displayed at a viewfinder or stored in a memory, after encoding,...
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7408724 |
Optical systems including a chromatic diffractive optical element corrector and associated methods
A diffractive optical element (DOE) corrector for use with three different wavelengths includes a first diffractive element on a first surface of a first material, the first diffractive element...
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7385173 |
Photosensitive array detector for spectrally split light
A detector includes a photosensitive array including at least one photosensitive surface. A focusing device focuses spectrally split light onto the photosensitive array. The focusing device is...
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7357521 |
Chromatic dispersion compensation device and method
A chromatic dispersion compensator whereby the amount of dispersion and the group delay time can be easily adjusted. A dispersion unit, a transmitting lens and a group delay generation unit are...
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7317580 |
Zoom lens
In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups...
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7301686 |
Optically controlled optical-path-switching apparatus, and method of switching optical paths
An optical signal optical path switching method comprising steps of using a thermal lens based on a distribution of refractive index produced reversibly caused by temperature increase generated in...
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7271963 |
Bi-curvature lens for light emitting diodes and photo detectors
A bi-curvature lens for diodes in an infrared wireless communication transceiver is disclosed. Devices having such a bi-curvature lens, such as a light emitting device, a light detecting device,...
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7253948 |
Optical magnification device for distance variation
An optical magnification device for varying the distance between an observer's eye ( 1 ) and an object ( 7 ), e.g., for a binocular magnifier or a microscope, in which focusing onto the object ( 7...
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7221399 |
Imaging apparatus with a multifocal lens formed of two pieces with different focal lengths
An imaging apparatus for imaging a first object at a normal distance and a second object nearer than the first object readily with high precision. The imaging apparatus has an imaging lens, an...
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7220064 |
Coupling optical system for optical communications
A coupling optical system for coupling light into an optical fiber of an optical communications system includes a liquid that includes a dispersion of microscopic particles and two transparent...
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7215491 |
Optical path switching device and method
An optical path switching method includes converging and irradiating, on a light absorption layer film provided in a thermal lens forming element including at least the film, each of a control...
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7159988 |
Projection optical unit and projection image display apparatus
A projection optical unit has two lens groups. A first projection optical unit disposed closest to an image display element, temporarily forms a first enlarged image (magnification: M 1 ) at the...
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7085063 |
Multi-directional optical element and an optical system utilizing the multi-directional optical element
Multi-directional optical elements are disclosed that include a body having a first side having a first curvature, a second side having a second curvature, a third side having a third curvature,...
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7082000 |
Aspherical lens with grating
An aspherical lens ( 10, 10′ ) has an aspherical surface ( 101, 101′ ) and an opposite flat surface ( 102, 102′ ). A multiple-step grating is defined in the flat surface by a...
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7068438 |
Grin-lens arrangement
A lens arrangement for transforming a divergent, generally astigmatic laser beam from a diode laser into a beam having a high degree of rotational symmetry is disclosed. The arrangement comprises,...
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7042649 |
Microfabricated rubber microscope using soft solid immersion lenses
Soft lithography with surface tension control is used to microfabricate extremely efficient solid immersion lenses (SILs) out of rubber elastomeric material for use in microscope type applications....
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RE39025 |
Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device
A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective...
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RE38943 |
Compound objective lens for optical disks having different thicknesses
A compound objective lens is composed of a hologram lens or transmitting a part of incident light without any diffraction to form a beam of transmitted light and diffracting a remaining part of the...
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6990136 |
Laser beam transmission apparatus
A laser beam transmission apparatus comprises a light-incidence optical system ( 22 ) converging and focusing a laser beam emitted from a solid-state laser apparatus ( 1 ), and an optical fiber ( 8...
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6950384 |
Optical pickup appratus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method
An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a...
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6950245 |
Optical system, and optical apparatus
The invention relates to an optical system or apparatus such as a lens system capable of focus control and a variable-focus lens, which has reduced power consumptions, ensures noiseless operation...
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6947223 |
Multi-focal length miniature refractive element and method for making the same
A monolithic multi-focal length miniature refractive element comprising a first surface region and a second surface region. The first surface region has a first characteristic radius of curvature....
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6927922 |
Imaging using a multifocal aspheric lens to obtain extended depth of field
A system for imaging with a circularly symmetric multifocal aspheric lens is provided for obtaining an extended depth of field. The system includes a camera for capturing an image of at least one...
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6876501 |
Objective lens, coupling lens, light converging optical system, and optical pick-up apparatus
An objective lens for recording and/or reproducing an optical information recording medium, comprises a first lens having a positive refractive power; and a second lens having a positive refractive...
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6870690 |
Dual-band lens
A single lens or optical system is used to image two different optical bands, for example visible and infrared, with the same possible adjustments in zoom and/or focus. A dual band singlet is...
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6859333 |
Adaptive liquid crystal lenses
An adaptive optical lens device, system and method of using the same is composed of at least two planar substrates and at least one homogeneous nematic liquid crystal (LC) layer. One planar...
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6842296 |
Optical lens and method of producing the same, method of producing optical lens array, focus error signal production method, and optical pickup apparatus
An optical lens whose focal length is different on first and second planes perpendicular to each other is provided. The optical lens is configured such that a convex element, which is formed...
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6813097 |
Lenses capable of post-fabrication modulus change
Novel optical elements are provided which are capable of post fabrication modifications. Specifically, the invention includes lenses, such as intraocular lens, which can undergo changes in storage...
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6788454 |
Viewing apparatus having a photographic function
A viewing apparatus with a photographing function, includes a viewing optical system by which an image of an object, formed by a positive objective optical system, is viewed though a positive...
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6781764 |
Objective lens for optical pick-up
An optical system of an optical pick-up includes a light source portion that selectively emits a first laser beam (shorter wavelength) and a second laser beam (longer wavelength), and an objective...
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6646817 |
Objective lens for optical recording media and optical pickup apparatus using the same
An objective lens for converging two wavelengths of light to their predetermined positions is constituted by two or three lenses. Respective materials for forming adjacent lenses are chosen such...
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6636365 |
Optical pickup apparatus and objective lens
An optical pickup apparatus for first and second optical information recording medium, comprises first and second light sources to emit first and second light flux; a single objective lens made and...
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6625103 |
Aspherical objective lens for reading information from optical disks of different thickness and manufacturing method therefor
An aspherical objective lens and its manufacturing method are disclosed which allows for forming an optical spot with fewer side lobes on optical discs having a continuous lens plane and substrates...
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6621644 |
Optical wavelength-demultiplexer with an improved optical lens
An optical wavelength demultiplexer includes an optical lens, a first-side waveguide and a plurality of second-side waveguide. The lens has a wave number distribution-surface having a section where...
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6552760 |
Luminaire with improved light utilization efficiency
A lens array 22 C has convex lenses 221 and 221 C arranged in alternate and staggering manner to one another. In combination with a condenser lens 23 , the convex lenses 221 form images of...
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6545821 |
Diffraction type lens and optical pickup apparatus using the same
One surface of the substrate constituting a diffraction type lens is formed with a zone plate exhibiting a smaller converging action with respect to a first wavelength λ 1 of light and a greater...
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6542314 |
Objective lens for optical recording media and optical pickup apparatus using the same
One surface of an objective lens is provided with a zonal part which acts such that the quantity of light having a wavelength of λ 1 is apparently canceled in the outer peripheral portion of the...
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6515808 |
Optical pickup apparatus and objective lens
An optical pickup apparatus for reproducing information from or recording onto one of different kinds of optical information recording medium comprises a first light source for emitting first light...
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6480344 |
Objective lens for optical pick-up
An objective lens includes a refractive lens having a positive refractive power, and a diffractive lens structure having a plurality of concentric ring-shaped steps that are formed on a lens...
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6426838 |
Polarization dependant multi-focus optical system
An optical element has a coating thereon to reflect energy, such as light, of a first polarization into a first focus zone and to allow energy, such as light, of a second polarization orthogonal to...
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6409141 |
Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
A flow cell 2 , a composite lens 15 , and first to third detectors 16 to 18 are arranged in this sequence in the light pathway of light emitted from a laser light source 1 . The composite...
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6404563 |
Portable electronic device having variable focus display
A portable electronic device having a variable focus display comprises a housing ( 512 ), supporting an image generating apparatus ( 518, 610, 710, 810 ), a lens ( 514, 612, 712, 812 ), and an...
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RE37717 |
Optical pickup device
An optical pickup device for condensing the light from a light source on a signal recording surface by an objective lens and for detecting the return light from the signal recording surface by a...
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6396622 |
Electro-optic apparatus and process for multi-frequency variable refraction with minimized dispersion
The object of the prevent invention is to provide an optical system for producing variable refraction with minimized dispersion. A first material with a first apex angle in a first state and a...
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6388822 |
Optical pickup device and optical recording medium
An optical pickup device which includes an objective lens having a numerical aperture of 0.7 or more collects light emitted from a light source and irradiates an optical recording medium. The...
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6344935 |
Optical system of optical pick-up
An optical system of an optical pick-up that is capable of using optical discs DVD and CD. The system includes a light source portion for selectively emitting a first laser beam (650 nm) and a...
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6342976 |
Luminous flux diameter variable type objective lens and optical apparatus using the same
A luminous flux diameter variable type objective lens having a wavelength selectivity is disposed within a luminous flux. Arranged on a surface of the lens are a first region 11 with no...
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6330118 |
Dual focus lens with extended depth of focus
A magneto optic or optical disk drive comprises a laser source for providing laser beam, and a lens or compound lens for focussing the laser onto a currently inserted recording disk with specific...
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6313956 |
Optical pickup apparatus and objective lens
An optical pickup apparatus for reproducing information from or recording onto one of different kinds of optical information recording medium comprises a first light source for emitting first light...
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