Abstract: A rack for simultaneously storing prisms having varying sizes and shapes, comprising a plurality of clamps for holding the prisms. Each clamp includes a fixed clamping block and an oppositely disposed movable clamping block for enabling the clamp to self-adjust to the size and shape of a prism to be held therein. The clamps are mounted in a frame which includes a clamp supporting cross-member for mounting the clamps to the frame.

Abstract: An adjustable lens rack capable of retaining a plurality of lenses of varying sizes and shapes in rows. Lenses within each row are retained within a pair of lens retaining bars which extend between two ends of a frame. At least one retaining bar is movably adjustable with respect to the other retaining bar, thus enabling retention of a different type of lens for each row. In an illustrative embodiment, each retaining bar has a plurality of channels for receiving peripheral portions of the lenses, and each retaining bar is slidably adjustable via slots in opposing ends of the frame.

Abstract: A method and apparatus for allowing a user who wears spectacles including at least one lens having a positive magnification factor, to view a distant object through both the lens of the spectacles and a telescope. The method comprises the step of positioning a lens in the optical path of the telescope. The lens placed in the optical path of the telescope is adapted to cancel the positive magnification factor of the lens of the spectacles to maintain the afocal characteristic of telescope. The apparatus comprises at least one afocal telescope defining an optical path having a first lens oriented in the optical path for magnifying a distant object to be viewed through the afocal telescope system. The telescope further comprises a second lens oriented in the optical path for cancelling the positive magnification factor of the lens to maintain the afocal characteristic of the telescope.

Abstract: The present invention is a viewing assembly that can selectively create optical compound corrections in the images reflected from the viewing assembly. The viewing assembly includes a reflective surface coupled to a supporting body in such a manner that the reflective surface conforms to the contour of the supporting body. The contour of the supporting body can then be selectively altered by the viewer of the viewing assembly, thereby changing the shape of the reflective surface and creating desired optical corrections in the viewed reflected images.

Abstract: An apparatus for enabling a user having a visual handicap indicative of a condition designated as double vision to obtain substantially binocular vision comprises a first prism associated with the left eye of the user and having a base and a first prismatic deviation, a second prism having a base and a second prismatic deviation different from the first prismatic deviation, and a rotating assembly for rotating the prisms until a binocular vision field is viewable through the prisms by the user. The prismatic deviations are selected so that rotation of the prisms aligns them in a manner which permits the brain to fuse the respective images viewed by each eye into a single image, thereby providing a binocular image field. If desired, corrective lenses which accommodate the far or near distance prescriptions of the left and right eyes may mounted in alignment with the corresponding prisms.

Abstract: An adjustable telescope alignment apparatus employs a telescopic assembly which is secured about the periphery to a pivot ring. The telescopic assembly extends from the front and back surfaces of the pivot ring. The pivot ring is positioned within a inner peripheral channel of a collet member to form a ball and socket joint. The collet member has an outer threaded area which is engaged by a threaded locking ring which locking ring selectively compresses the collet member. By means of the ball and socket joint one can adjust and move the telescope assembly within a desired cone of rotation. The collet member is inserted within an aperture formed in a carrier lens held by a spectacle frame and is secured to the lens by means of a suitable adhesive as applied to an outer peripheral flange of the collet member.

Abstract: A magnifying assembly of the type employing a lens surrounded by a plastic or metal holding is placed in a light diffuser, which light diffuser is an annular member having an open top which is associated with a peripheral flange upon which the magnifying lens rests. The member has a bottom opening which is associated with an annular curved flange which is abraded so as to uniformly diffuse light over the surface of a document to be read whereby the area enclosed by the bottom opening of the annual member is uniformly illuminated by a light source.

Abstract: A telescope housing has a removable finger accommodating ring secured thereto. The ring is coupled to the housing by a post having left and right flanges with upstanding distal ends opposedly projecting from one end of the post to be inserted into an aperture located in a latch on the ring. In this manner, various telescope assemblies of different magnification can be accommodated by the use of the removable ring which also enables convenient storage.