Abstract:
Métodos y aparatos para el enmascaramiento central de un lente condensador de un microscopio de luz transmitida para maximizar simultáneamente la resolucion, el contraste y la profundidad de campo utilizando un plano conjugado del plano de abertura en donde una imagen de la abertura posterior del lente condensador ha sido creada, una pluralidad de fuentes de luz para iluminar dos o más de las caras de un espejo de multiples caras en forma de una pirámide, el cual se mueve en relacion a las fuentes de luz para variar la cantidad de enmascaramiento central continuamente sobre una escala que incluye el cero, dirigiendo a la vez multiples haces de luz oblicuos sobre el lente objetivo.
Abstract:
An optical system for converting shape of a light beam by making use of refraction of prisms comprises a prism optic which includes a complex prism (10; 11) constituted by combination of at least two types of orisms (10A, 10B; 11A, 11B) made of materials differing from each other in respect to dispersion of refractivity. An optical information processing apparatus includes the optical system employing the prisms. Geometric optical properties of the optical system is insusceptible to being changed irrespective of changes in wavelength of the light beam brought about by dispersion in oscillation wavelength of a light source, change in the course of time lapse, change in ambient temperature and/or change in emitted light energy. With the optical system, information processing is realized which is insusceptible to the influence of the change in wavelength of the light beam.
Abstract:
The device is used to deflect optical radiation and consists of at least one prism (1). The prism (1) has at least one reflective surface (5) and can rotate about an axis (2). To permit high revolution speeds, the prism has a substantially rounded outline (3), at least in regions.
Abstract:
A device for shaping a beam of light comprising a single anamorphic prism (10) having an input face (26) for receiving a beam of light, and an output face (30) for outputting the beam of light. A reflecting face (28) reflects light from the input face (26) to the output face (30). The faces (26, 30) are oriented to cause the beam exiting the output face (30) to be substantially parallel to the beam entering the input face (26). The prism (10) is sized to provide colinearity of the input and output light.
Abstract:
An optic receiver capable of detecting the angle of incidence of optical energy in a plurality of fields of view relative to an airborne frame of reference. Incoming rays are reflected by surfaces arranged at predetermined angles relative to an input aperture so as to reflect rays in predetermined fields of view into parallelism with the receiver axis and ultimately to a line image at an output aperture. Power distribution along the line image varies with the azimuth of the target reflection. Computation of target azimuth from the power distribution along the line image is facilitated by photodetectors mounted on the element and associated electronic circuitry.
Abstract:
An optical device, such as an optical digital data recorder, includes a variable optical wedge in the light path. The variable wedge facilitates assembly by a two-step adjustment process; the first step aligns a light receptor portion to receive an input light beam at an angle so as to remove ellipticity from the input beam while the second subsequent step adjusts the wedge assembly to align a transmit and reflected light path for optically coupling the wedge to a record medium. The receptor portion includes a semicircular cross-sectioned lens movable disposed in a mating cavity for adjusting the angle of reception independently of the reflected wave position.
Abstract:
A flame quality analyser for analysing one or more properties of a flame from a burner comprises a fibre optic array (32,33) including a plurality of optical fibres each having a light-receiving end lying in a line and facing the flame. The line may extend parallel to the flame and burner axis (array 32) or may extend perpendicular to that axis (array 33). The light received by the fibre optic array (32,33) is provided as a sheet of light to a monochromator which spreads the light into its component wavelengths. A pair of spaced apart arrays of light detectors is then utilised to measure the light at two discrete wavelengths. This detection produces signals that can be analysed to generate temperature and particles distribution values for the flame across its length or width.
Abstract:
A process is disclosed for manufacturing prisms, in particular microprisms and beam splitters, involving the following steps: (a) rectangular plates (1) are produced; (b) a plurality of such plates are joined together by their large surfaces to form a rectangular block (4); (c) at least one face of the block (support surface 5) perpendicular to the large surfaces is machined; (d) the block plates are realigned by alignment of the large surfaces at an angle alpha 1, with the sharp edges of the plates in contact with the aligning pate (6); (e) several offset blocks are bonded by their top surfaces (11) to a support, the support surface (5) is ground and polished; (f) steps (d) and (e) are repeated as required with different values of alpha ; (g) the block is realigned by aligning all the large surfaces at an angle beta ; (h) an auxiliary plate (16) is bonded to the optically active surfaces (8, 12); (i) prism strips (18) are cut at a distance a from the surface of the auxiliary plate (16); (j) the microprisms (10) are cut; (k) the microprisms (10) are detached from the auxiliary plate (16). A wide variety of shapes can be produced.
Abstract:
An optical device having a transparent body (11) and including two prism surfaces (16, 18) formed thereon. The composite structure exhibits two axis stability in that the angular relationship between the input beam (12) and the output beam (14) remains fixed for slight movement of the device (11) about two orthogonal axes.
Abstract:
Techniques for creating volumetric, three-dimensional displays (2580), which may be images or data, are described. The apparent position of a volumetric image (2590) can be "translated" by employing an image translation chamber having: two concave reflectors, segments of two concave reflectors, a bi-convex lens, one concave reflector disposed atop a frontal surface mirror, lens segments disposed atop a frontal surface mirror, a plano-convex lens disposed atop a frontal surface mirror, or a holographic optical element (HOE) (2582) fabricated in a holographic manner from these physical optical components. Other aspects of the invention include both active and passive multi-planar optical elements (MOE's) (2584) used in either a reflective or transmissive mode and optionally provided with interposed layers of liquid crystal material.