Abstract: An automatic focusing optical system and assembly including an objective lens subassembly, a sensor electronically connected to a processor, and a dichroic filter for passing light of a first wavelength to the sensor and reflecting light of a second wavelength. A method of auto-focusing including receiving an image of an object comprising a first wavelength and a second wavelength, wherein the first wavelength is passed through a dichroic filter to a sensor and the second wavelength reflected, analyzing the distance of the object based on the first wavelength, generating at least one signal to an objective lens subassembly comprising a drive mechanism arranged to displace an optical lens, and displacing an optical lens along an optical axis to focus the image.

Abstract: An optical support assembly including at least one optical assembly, a bracket adapted for coupling to a spectacle frame, and a rail frame coupled to the bracket and comprising any of (1) a rigid rail frame engaged to the at least one optical assembly for laterally adjusting said at least one optical assembly, and (2) a deformable rail frame engaged to the at least one optical assembly for manual reconfiguring said at least one optical assembly.

Abstract: An optical system is capable of enhancing vision of low vision individuals using a simple adjustment mechanism that requires a minimum length of travel to effect a desired adjustment. First and second substantially perpendicular mirrors are mounted in a cluster for pivotable movement. An entrance mirror is pivoted in response to pivoting movement of the mirror cluster so as to ensure proper convergence when the object to be viewed is close to the objective lens or lenses in a binocular system. The system also includes an objective lens and an eyepiece lens and is readily mounted to a conventional eyeglasses frame.

Abstract: An optical system is capable of enhancing vision of low vision individuals using a simple adjustment mechanism that requires a minimum length of travel to effect a desired adjustment. First and second substantially perpendicular mirrors are mounted in a cluster for pivotable movement. An entrance mirror is pivoted in response to pivoting movement of the mirror cluster so as to ensure proper convergence when the object to be viewed is close to the objective lens or lenses in a binocular system. The system also includes an objective lens and an eyepiece lens and is readily mounted to a conventional eyeglasses frame.

Abstract: An optical system is capable of enhancing vision of low vision individuals using a simple adjustment mechanism that requires a minimum length of travel to effect a desired adjustment. First and second substantially perpendicular mirrors are mounted in a cluster for substantially linear movement. A third mirror is substantially parallel to the first mirror and pivotal about an axis substantially transverse to the direction of linear movement of the cluster. Pivotal movement of the third mirror may be automatic in response to linear movement of the mirror cluster so as to ensure substantially proper convergence when the object to be viewed is about one meter (or closer) from the objective lens or lenses in a binocular system. A fourth mirror is substantially parallel to the second mirror and substantially perpendicular to the third mirror. An objective lens cooperates with the first and third mirrors, and an eyepiece lens with the second and fourth mirrors.

Abstract: A small, light, wide field (e.g. about a 15 degree field of view), Keplerian bioptic telescope is provided which preferably is mounted in association with conventional eyeglasses. A casing includes first and second open ends, a middle section, and an optical system mounted within it. The optical system includes an eye lens adjacent the casing first end, an objective lens adjacent the casing second end, and a right angle prism and penta prism between the eye lens and objective lens, disposed side by side, typically with faces in face to face engagement. A field lens may be provided between the eye lens and the prisms. The position of the objective lens is adjustable by movement toward and away from the casing middle section. An opening may be formed in a first eyeglass lens and the casing press fit into the opening so that the first end of the casing is on a first side of the eyeglass lens and the middle section is on the second side of the eyeglass lens opposite the first side, extending about 1.

Abstract: An array (32) of flow directing elements such as fan blades (20) for a turbine engine (10) is disclosed. Each blade in the array has a set of circumferentially shrouds (42, 44) whose contact edges (46, 48) abut each other during engine operation. A shroud angle .sigma. establishes the running chord angle .alpha. of the airfoil (30) portion of the array. Slight differences in the shroud angles of adjacent blades cause corresponding differences in the running chord angles so that the array is detuned and airfoil flutter is precluded.

Abstract: The present invention relates to a method and apparatus for extending the range and accuracy of electronic and electro-optical systems for determining the distance from a reference object to another object. A multiplicity of range baselines is employed, and a computer, usually a microprocessor, is used to automatically switch between baselines to extend the total measurement range, to increase the precision of range measurement over a prespecified set of ranges, or both. The invention has applications in a wide variety of range measuring systems, including robotics, autofocus cameras, autofocus binoculars, and autofocus vision aids for people with impaired vision.

Abstract: An outer container is provided of relatively strong material such as corrugated paperboard or solid fiber, or other material. This outer container is shaped to accommodate a paper grocery bag. The outer container comprises a rectangular sleeve, to a bottom wall of which is hinged a flange foldable against the wall to which it is hinged. This bottom panel is of sufficient length to engage frictionally against the opposite wall to support the bag.