Abstract: Embodiments include an optical system comprising a plurality of powered optical elements, arranged within a same optical path, configured to simultaneously pass and focus therethrough mid-wave infrared (MWIR) and long-wave infrared (LWIR) spectral bands to a focal plane array (FPA) and provide simultaneous correction of monochromatic and chromatic aberrations over the MWIR and LWIR spectral bands with a low f-theta distortion. The plurality of powered optical elements comprises a first set of powered lenses having a passive athermalized response over fluctuating temperatures in a variable temperature environment; and a second set of powered lenses to operate in a constant cryogenically cooled environment. A method and a situational-awareness device are also disclosed.
November 21, 2016
Date of Patent:
June 11, 2019
LOCKHEED MARTIN CORPORATION
James A. Fry, William G. Norris, John A. Savage
Abstract: A binocular adaptor system enables quick and secure attachment of binoculars to a stand, such as a tripod stand. The binocular adaptor assembly utilizes an adaptor body that has a stand end for coupling with a stand and a clamp end for receiving a clamp. The clamp is configured to extend into a clamp aperture in the adaptor body and has a clamp pin aperture to receive a lock pin. A spring is configured between an insert end of the clamp and the adaptor body to provide a force against the insert end of the clamp. When a lock pin in inserted into the clamp aperture, the spring engages a lock stop of the clamp with an insert lock portion of the lock pin to secure the lock pin in place. A lock sleeve can then be tightened to prevent pressing of the button.
Abstract: Provided is a polymer film in which metal oxide particles are localized to a great degree, wherein the polymer film is a hard coat layer that includes a binder including a first polymer component and a second polymer component that are miscible with each other and metal oxide particles that are unevenly distributed with a greater concentration toward at least one of a surface portion and the other surface portion opposite the surface portion, wherein the first polymer component may be hydrophilic, the second polymer component may be hydrophobic relative to the first polymer component, a proportion of the first polymer component may gradually decrease from the surface portion to the other surface portion, and the surface portion may be toward a substrate for forming the polymer film. An optical member, such as a polarization member, and a display device employing the polymer film are also provided.
Abstract: An interior minor for a motor vehicle, including a housing and a minor element held within it, can be tipped between a day position and a night position by means of at least one actuation element, where a direction of actuation of the at least one actuation element corresponds to a transverse direction of the interior minor in a central installation position.
Abstract: An arrangement for lightsheet microscopy. In the arrangement, a detection objective includes a first adaptive optical detection correction element arranged in the beam path or which can be introduced into the latter. Alternatively, or in addition, an illumination objective includes a first adaptive optical illumination correction element arranged in the beam path or which can be introduced into the latter. With the two correction elements, aberrations which occur because of the inclined passage through boundary surfaces of the separating layer system of light to be detected or of light for illuminating the sample can be reduced for a predetermined range of detection angles (?) or of illumination angles (?) and/or for a predetermined range of the thickness of the at least one layer of the separating layer system.
Abstract: An optical system includes, disposed in sequence along an optical axis starting on an object side: a first lens group having a positive refractive power, which remains fixed relative to an image surface upon focusing; and a second lens group having a positive refractive power, which moves along the optical axis upon focusing, wherein: the first lens group includes: a first partial lens group that comprises at least two positive lenses and has a positive refractive power; and a negative lens, the second lens group includes: at least one meniscus lens with a convex surface thereof facing the object side; a second partial lens group that includes at least one negative lens and at least one positive lens, and has a positive refractive power; and a cemented lens that is formed by bonding together a plurality of lenses and has a positive refractive power, wherein: a predetermined conditional expression is satisfied.
Abstract: An optical device, such as a microscope, is disclosed that can be assembled from flat materials. The optical device can be assembled via a series of folds of a flat material. The optical microscope can include a stage for supporting a sample, an optic stage, and a light source. The optic stage can include one or more lenses. The optical microscope can be capable of obtaining simultaneous images from different forms of microscopy. The optical microscope may have bright field and filter field viewing capabilities wherein a user shifts from bright field to filter field by lateral movement of the stage containing a lens and a light source that cooperate to provide either the bright field or the filter field.
June 30, 2017
Date of Patent:
May 28, 2019
The Board of Trustees of the Leland Stanford Junior University
Manu Prakash, James Stanley Cybulski, James C. Clements
Abstract: A wire grid device having transmission power characteristics and a power extinction ratio in a terahertz wave band that cannot be achieved conventionally. A cutout is formed between one end and an opposite end of a rectangular metal thin plate to form a plurality of grid plates each having an elongated grid part between the one end and the opposite end. The grid plates are stacked in such a manner that the grid parts of the grid plates are spaced at a given interval and face each other, thereby forming a grid plate stack. In this case, spacers are inserted between one ends and between opposite ends of adjacent ones of the grid plates to form parallel flat plates configured by the grid parts. The grid plate stack forming the parallel flat plates operates as a polarizer for a terahertz wave band.
Abstract: An observation optical system has an objective system and an eyepiece system in the order from the object side. The objective system includes, in the order from the object side, a first group having a positive power, a second group having a positive power, and a third group having a negative power. The objective system has an inverting optical system. The eyepiece system includes, in the order from the object side, a fourth group having a positive power and a fifth group having a positive power. The third group and the fourth group move in directions separating from each other along an optical axis to thereby perform variable power from a low magnification to a high magnification, and also the following conditional expression is satisfied: 0.28<H×L/f?0.55 ??(1).
Abstract: A holographic substrate-guided wave-based see-through display has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic optical element, capable of accepting the image from the microdisplay, and capable of transmitting the light. The holographic optical element couples its output to an elongate substrate, capable of accepting the light from the holographic optical element at a first location, and transmitting the light along a length of the substrate by internal reflection to a second location, the elongate substrate being capable of transmitting the accepted light from the second location. The substrate couples out what it receives to a transparent holographic optical element, capable of accepting the light transmitted from the substrate and transmitting it to a location outside of the holographic optical element as a viewable image.
November 17, 2009
Date of Patent:
April 30, 2019
Fedor Dimov, Tin Aye, Kevin Yu, Svetlana Soboleva, Khin Swe Yin, Myo Kyaw, Dmitry Voloschenko
Abstract: A lens driving device is proposed, including a cover can whose upper side surface includes an opening formed to expose a lens and whose side surface extends from the upper side surface to a base, a base that is secured to the cover can; a housing that is arranged on top of the base and moves in first and second directions that are perpendicular to an optical axis, a bobbin that is housed in the housing and moves in an optical axis direction, an actuator that includes a magnet unit arranged in the housing, a first coil unit arranged in an outer side surface of the bobbin, and a second coil unit that is arranged on top of the base, and a substrate that is disposed between the second coil unit and the base so as to control the first coil unit and the second coil unit.
Abstract: An optical logic circuit includes a NOT circuit. The NOT circuit reflects by fixed end reflection an data pulse input into the optical logic circuit which is an ON pulse of which a wavelength and an intensity are similar to a wavelength and an intensity of a standard optical pulse or an OFF pulse obtained by applying OFF modulation to the standard optical pulse. The NOT circuit multiplexes the reflected data pulse and the standard optical pulse and outputs the multiplexed pulse.
Abstract: Exemplary embodiments of the present invention relate generally to the fields for indicating a location on an image in a multi-viewer display. In particular embodiments, the multi-viewer display may be a multi-viewer microscope.
July 7, 2017
Date of Patent:
April 23, 2019
The Board of Regents of the University of Texas System
Abstract: There are provided an optical filter excellent in weather resistance and a method for manufacturing an optical filter. The optical filter of the present invention includes a transparent substrate, and an optical multilayer film provided on a surface of the transparent substrate. In the optical multilayer film, a low-refractive index film containing silicon oxide (SiO2) and a high-refractive index film higher in refractive index than the low-refractive index film are alternately stacked. A density of a portion of the low-refractive index film close to an interface between the low-refractive index film and the high-refractive index film is lower than a density of a portion of the low-refractive index film other than the portion close to the interface.
Abstract: A lighting device includes a light source, a rod-integrator, a light guiding section for guiding light emitted from the light source to an incident face of the rod-integrator and a first reflecting plate. The first reflecting plate has a through-hole and is adjacent to the incident face of the rod-integrator with the rod-integrator being inserted into the through-hole of the first reflecting plate. The first reflecting plate is configured to reflect unnecessary light emitted from the light guiding section, the unnecessary light not entering incident light.
Abstract: In a near-eye optical display system comprising a waveguide and diffractive optical elements (DOEs) configured for in-coupling, exit pupil expansion, and out-coupling, a rainbow phenomenon manifested in the display may be removed or reduced using a polarizing filter at the front of the system so that real-world/stray light entering the system has a particular polarization state, for example TM-polarized. The polarizing filter is utilized in conjunction with a downstream out-coupling DOE that includes diffractive grating structures that are configured to enable sensitivity to an opposite polarization state, for example TE-polarized. An imager is configured to produce virtual-world images that also have a TE-polarized state. The polarization-sensitive out-coupling DOE diffracts the TE-polarized imaging beam out of the grating for display while the TM-polarized light from the real world and/or stray light passes through the grating without diffraction and thus cannot contribute to rainbows in the display.
Abstract: A four-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power, and a fourth lens element with a negative refractive power. The focal length of the first lens element is f1, the focal length of the second lens element and the third lens element combined is f23, and they satisfy the relation: 0.05<f1/f23<1.8. When the above relation is satisfied, a wide field of view can be obtained and the resolution can be improved evidently.
Abstract: A movement mechanism comprising a substantially spherical holder and a substantially bowl-shaped ring, which are rotatable relative to each other about a first axis and a second axis enclosing an angle of approximately 90° to the first axis. Driving means are provided for enabling movement of the holder relative to the ring and comprise a first non-straight driving rod bearing-mounted in the holder, as well as means for activating the driving rod and a second non-straight driving rod bearing-mounted in the holder, as well as means for activating the driving rod. The first driving rod and the second driving rod are rotatable about a third and a fourth axis, respectively, which third and fourth axes are mutually parallel and lie in a plane equal or parallel to the top face of the holder and which third and fourth axes are parallel to or coincide with the first axis.
Abstract: The lens driving device according to the present invention is provided with: an autofocus drive part for moving an autofocus movable part with respect to an autofocus fixed part in an optical axis direction and thereby automatically performing focusing; a shake correction drive part for correcting shake by causing a shake correction movable part to oscillate with respect to a shake correction fixed part in a plane orthogonal to the optical axis direction; and a sub-stopper part for restricting the distance that the autofocus movable part can move toward the image side in the optical axis direction to within an allowable range of displacement of a lens part, the sub-stopper part being interposed between the autofocus movable part and the shake correction fixed part.
Abstract: An electronic device comprising a cover plate is disclosed. The cover plate comprises one or more thin sapphire layers having a thickness of from about 50 microns to about 500 microns. Also disclosed are methods for preparing these thin sapphire layers.