摘要:
“A tree trimming device that automatically climbs a tree or other vertical member and shears limbs or debris as it climbs has an anchor structure with substantially horizontal clamps, a cutting assembly with substantially horizontal clamps, vertical connecting pistons, and a cutting blade assembly.”
摘要:
A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.
摘要:
A lens structure includes a surface devoid of cusps that includes a seamless profile wherein the surface includes at least one segmented parabolic function forming a filtering surface for producing a controlled amount of spherical aberration.
摘要:
An imaging system for imaging a fingerprint operates in at least two different modes to provide both finger recognition and finger navigation applications. A light source illuminates a swipe interface having an elongated sensing area upon which a user swipes a finger. Light reflected from the finger is captured by an optical image sensor as image data representing a sequence of images resulting from motion of the digit over the sensing area of the swipe interface. The captured image data is output by the optical image sensor for processing of the data in one of the at least two different modes.
摘要:
An apparatus and method for observing a chemical substance. In one embodiment, the apparatus includes a vessel having a base portion and an at least partially transparent wall portion depending from and extending away from the base portion. The base portion and the wall portion define an interface region at an interface between the base portion and the wall portion. The vessel can further include a background material fixedly attached to the base portion and/or the interface region, with the background material having a surface visible through the wall portion from a region exterior to the vessel. The background material can be attached to an inner surface or an outer surface of the vessel, or the background material can be integrated with a medium that forms the base portion and the wall portion of the vessel. The background material can have a single color, such as white or black, or the background material can have a plurality of hues to make the contents of the vessel more clearly visible.
摘要:
An apparatus and method for observing a chemical substance. In one embodiment, the apparatus includes a vessel having a base portion and an at least partially transparent wall portion depending from and extending away from the base portion. The base portion and the wall portion define an interface region at an interface between the base portion and the wall portion. The vessel can further include a background material fixedly attached to the base portion and/or the interface region, with the background material having a surface visible through the wall portion from a region exterior to the vessel. The background material can be attached to an inner surface or an outer surface of the vessel, or the background material can be integrated with a medium that forms the base portion and the wall portion of the vessel. The background material can have a single color, such as white or black, or the background material can have a plurality of hues to make the contents of the vessel more clearly visible.
摘要:
Converging air lens structure includes a first refractive medium that has a first index of refraction. A second refractive medium that has a second index of refraction is immersed in the first refractive medium. The second refractive index is less than the first index of refraction. The lens structure features converging lens properties. An aperture stop is disposed in the second refractive medium, which is preferably air.
摘要:
The principles of non-imaging optics, rather than imaging optics, are used to provide a high power LED illumination lamp that has a specified limited viewing angle. A compound parabolic flux extractor extracts and concentrates light emitted by an LED chip and a light pipe continues the concentration into the specified viewing angle. A lens or a diffusant may be used to modify the light output of the lamp. A light constructed as an array of the lamps is suitable for use as an automobile external light such as a center high mounted stop light.
摘要:
Liquid differential pressure measurement apparatus using at each of two separate vertical locations a manifold with a pair of voids, each pair being covered with a thin, non-elastomer membrane pressing tightly against a horizontal fence line therebetween. A first void of each pair is gas pressurized from the external side of the manifold to move the membrane on the internal side of the manifold outwardly against the pressure head of liquid on the membrane at the location of the fence line, the gas escaping via the second void, which is vented. A meter connection to the first void of each pair is supplied to a differential pressure meter and/or a device that converts a differential pressure to an electrical signal for remote readout or the like.
摘要:
The rate at which radiation defects in semi-conductors are annealed is enhanced by various electronic mechanisms. These effects can be used to program device arrays in which all devices are initially damaged, then selected devices are activated by addressing them electrically through the individual device contacts.