Abstract:
The invention concerns a multiple layer piezoelectric deformable bimorphic mirror intended for use in astronomical telescopes, industrial lasers and guidance and tracking systems. The proposed mirror comprises a housing (1) in the form of a shallow cylinder with a cover (2) and a reflecting surface (3) on the outer face of the cylinder bottom. At least two piezoelectric plates (4), each provided with continuous electrodes (5) on opposite faces, are provided on and parallel to the inner surface of the bottom and within the boundaries of the reflecting surface (3). The polarisation vectors (6) of any two adjacent plates are opposite in direction and like electrodes of adjacent plates are connected by wires (7). The cylinder is designed as a single component, and the cylinder bottom is thicker in the middle, where the reflecting surface (3) is supported, than around the periphery. The cavity of the housing (1) can be filled with an elastic sealant (10).
Abstract:
The present invention discloses an outside rear-view mirror for vehicle, which has a convex surface formed by evenly connecting the plurality of differential cambers with varying average curvature. Said average curvatures of differential cambers are increasing from upside of the mirror to under side thereof in vertical direction, and also increasing from adjacency to vehicle to far therefrom in horizontal direction. Further, the difference of main curvatures of said differential cambers only causes an acceptable distortion in image for drivers. As above structure, the present invention is provided with the features, such as wide field-view, blindspot free, clear image and unremarkable distortion.
Abstract:
A device for use in the light-beam processing of materials comprises a point optical light source (1) and a concentrating reflector (2) with a reflecting surface in the form of a surface of rotation. The generatrix of the surface of rotation of the concentrating reflector (2) is formed by the arcs of co-focal ellipses (3), segments of beams (4) originating from the focus which coincides with the light source (1) and ellipses connecting the ends of the said arcs and the arc of circumferences (5) with their centre at that focus. The dimensions of the boundary segments and their configuration are determined taking into account the requirement to gather the maximum amount of light from the point source (1) in the region of the focal point on the surface of the material undergoing treatment while retaining the greatest possible freedom to change the reflector's shape.
Abstract:
A concentrator of solar radiation comprises a carrying structure (1) on which are mounted, in annular rows, facets (2) the reflecting surfaces of which are split into annular zones (3). At least one of the peripheral annular zones (3) has a toroidal surface the generatrix (4) of which has the form of a bow. The centre (5) of curvature of the generatrix (4) is located, in relation to the latter on the other side of the optical axis (6) of the concentrator. The geometrical parameters of the annular zone (3) with the toroidal surface are chosen so as to ensure that from among all the rays falling on it parallel to the optical axis (6) of the concentrator two rays (7, 8) are focused on the theoretical focus (F).
Abstract:
Rearview mirrors (16, 50, 140, 78, 84, 90, 98, 99) having a convex curvature defined by mathematical and geometrical relationships between the position of the observer, the viewed objects and the mirror. The mathematical relationships are designed to minimize bi-ocular distorsions while producing the desired field of view. The mathematical relationships when expressed in incremental field angular relationships which correspond to constant vision angle increments may follow the formula DELTAdeltan = DELTAdelta(n-1) AD1+X BD where (n) defines a point along a generally horizontal line of the mirror surface, beginning at the optical design axis or at the edge of a primary viewing surface; deltan defines the angle from the axis to point (n); DELTAdeltan defines the incremental field angle between (n) and (n-1) and X is a constant factor chosen to produce a desired total field of view across the surface at a constant rate of horizontal optical distortion; or may follow the formula DELTAdeltan = DELTAdelta(n-1) AD1+(n/N)(2X) BD or may follow the formula DELTAdeltan = DELTAdelta(n-1) AD1+h+(n/N)(2X-2h) BD where h is a value between 0 and X.
Abstract:
A rear view mirror for an automotive vehicle which includes a universally mounted mirror system (38) having a flat mirror component (44), a convex mirror component (52), an adjustable mechanism (76) for varying the relationship between the flat and convex mirror components and a hinge system (48, 50) for pivoting connecting the convex mirror component to the flat mirror component. The arrangement of the flat and convex mirror components enhances the rear view vision of an operator of a vehicle.
Abstract:
The invention pertains to adaptive optics and can be used for the static and dynamic control of a wave front in various optical devices and systems, including astronomical telescopes, industrial lasers and in guidance and tracking systems. The technical result is an increase in the amplitude of controlled displacements of the optical surface of deformable mirrors based on active bimorph structures, increased mirror sensitivity and a reduction in control voltage. In addition, the proposed design permits alteration of the shape of deformation of the mirror's reflecting surface. A novelty of the deformable mirror based on a multilayered active bimorph structure is the design of the component parts of the bimorph, and also the connection and shape of the control electrodes of individual piezo-electric plates or films.
Abstract:
A nonimaging concentrator (50) of light. The concentrator has a shape defined by dR/dphi=Rtanalpha, where R is a radius vector from an origin to a point of reflection of a light edge ray (70) from a reflector surface (90) and phi is an angle between the R vector and an exit aperture (80) of the concentrator and coordinates (R, phi) represent a point on the reflector surface and alpha is an angle the light edge ray from an origin point makes with a normal to the reflector surface.
Abstract:
A reflector plate having such a form that two lines start at one point on a circle enclosing an emission source having a cylindrical, spherical or similar shape and extend toward opposite sides to form two symmetrical involutes and a straight line connecting the opposite ends of the two curves are substantially circumscribed with the circle, whereby an emission from the emission source can be perfectly and uniformly emitted from an opening without being shielded at all, so that the efficiency is greatly improved and a uniform emission can be obtained. An assemblage of a light or heat emitting source with the involute reflector plate provided at the predetermined position makes it possible to give an illuminator or a heat radiator with a high efficiency of uniformly emitting the light or heat from the reflector opening.
Abstract:
A concentrator arrangement (10) consists of a plate (11) coupled to a plurality of mutually parallel first cells (14) with parabolic side walls (2, 3). The first cells (14) are optically coupled with second cells (15) whose coupling faces with the first cells (14) and the solar cells (21) are square. The side, front and back walls of the second cells (15) are curved in a shape of a parabola.