摘要:
This invention relates to a method and apparatus for measuring the optical power of soft contact lenses having a lens holding apparatus which is mountable on known prior art lensmeter structures. The lens holding apparatus includes a basic support housing means, a lens holder assembly mounted on the basic support housing means, and a lens conditioner means connected to the basic support housing means and operably engagable with the lens holder assembly. The lens holder assembly includes a contoured lens support member having a transparent lens support surface to substantially duplicate the outer contour and size of a person's eye. The lens conditioner means includes a lens wiper assembly operable through an actuator linkage assembly to move a wiper blade member over the contoured lens support member with a soft contact lens mounted thereon to provide a wetting action on both sides of the soft contact lens to duplicate the conditions when worn on the cornea of a person's eye. This operation substantially duplicates the condition of the soft contact lens as being worn on the cornea of a person's eye. The method of this invention relates to optical power measurement with the use of a lens support member being (1) cleansing; (2) wetting; (3) wiping; (4) measuring the soft contact lens; and (5) periodically rewetting and operating the device as required.
摘要:
An odorless sterilizing and disinfecting solution is described which has a pH of from 3 to 9 and which contains an effective amount of phthalaldehyde. The solution is used to sterilize or to disinfect a surface in need of such treatment.
摘要:
Varactors are provided which have a high tunability and/or a high quality factor associated therewith as well as methods for fabricating the same. One type of varactor disclosed is a quasi hyper-abrupt base-collector junction varactor which includes a substrate having a collector region of a first conductivity type atop a subcollector region, the collector region having a plurality of isolation regions present therein; reach-through implant regions located between at least a pair of the isolation regions; a SiGe layer atop a portion of the substrate not containing a reach-through implant region, the SiGe layer having an extrinsic base region of a second conductivity type which is different from the first conductivity type; and an antimony implant region located between the extrinsic base region and the subcollector region. Another type of varactor disclosed is an MOS varactor which includes at least a poly gate region and a well region wherein the poly gate region and the well region have opposite polarities.
摘要:
A long distance auxiliary drive tender for railroad locomotives which stores significant quantities of fuel and delivers the fuel to the locomotives while underway and which also includes traction motor drive axles powered by the locomotive generators. The traction motors are also capable of providing dynamic braking. Preferably, the auxiliary drive tender will also store and transfer lubrication oil, water, and sand for the locomotives. The auxiliary drive tender operates much like a B-unit in conventional MU operations except that it does not have its own power source.
摘要:
An educational vehicle for exploring and viewing earth's surface includes a body, a plurality of wheels, a transparent plate, a removable cover and a mirror assembly. A child sits on the body. The wheels are rotatively coupled to the body. The transparent plate mechanically coupled to the body. The transparent plate forms a window through which the child is able to explore and view the earth's surface. The transparent plate also forms a magnifying lens. The removable cover is placed over the transparent plate.
摘要:
A parallel plate capacitor formed in the back end of an integrated circuit employs conductive capacitor plates that are formed simultaneously with the other interconnects on that level of the back end (having the same material, thickness, etc). The capacitor plates are set into the interlevel dielectric using the same process as the other interconnects on that level of the back end (preferably dual damascene). Some versions of the capacitors have perforations in the plates and vertical conductive members connecting all plates of the same polarity, thereby increasing reliability, saving space and increasing the capacitive density compared with solid plates.
摘要:
A lighted fishing lure includes a rod, a collar, a light source, an electrical source, first and second tubes, first and second caps. The rod has a first end, a second end and a groove which is disposed between the first and second ends and is formed out of a light transmitting plastic material. The collar is mechanically coupled to the rod adjacent to the groove thereof. The light source is mechanically coupled to the collar. The electrical source is mechanically coupled to the collar and electrically coupled to the light source. The first and second tubes are concentrically aligned and rotatively coupled to the rod and disposed between the groove and the first and second ends, respectively. Each of the first and second tube has an outer sidewall through which the output of light passes. The first and second caps secure the first and second tubes to the rod. Each of the first and second tubes has a plurality of fins which rotatively drive the first and second tubes counter-clockwise and clockwise about the rod.
摘要:
Tertiary phosphine oxides are reduced to the corresponding phosphines by halosilanes in the presence of a stoichiometric amount of a primary or secondary amine. The reduction in yield expected using a primary or secondary amine in place of the prior art tertiary amine is not observed.
摘要:
An underwater diver's combination mask and lighting assembly includes a face-plate, a frame, an interface, a lighting assembly and an electrical source. The face-plate is inserted in the frame which has a first side and a second side. The interface is inserted between the frame and the face of the underwater diver. The lighting assembly is mechanically coupled to the frame. The electrical source is electrically coupled to the lighting assembly.