Abstract:
Die vorliegende Erfindung betrifft eine optische Anordnung und ein Verfahren zur Laserinterferenzstrukturierung einer Probe (10). Die optische Anordnung weist eine Laserstrahlungsquelle (1) zum Emittieren eines Laserstrahls (11), ein Strahlteilerelement (4), das den Laserstrahl (11) in zwei Teilstrahlen (12, 13) derart aufteilt, dass einer der zwei Teilstrahlen (12, 13) innerhalb des Strahlteilerelements (4) einen längeren Weg durchläuft als der andere Teilstrahl (12, 13), ein Umlenkelement (5), das einen der beiden Teilstrahlen (12, 13) derart umlenkt, dass beide Teilstrahlen (12, 13) im Wesentlichen parallel zueinander verlaufen, und ein Fokussierelement (9) auf, das die beiden im Wesentlichen parallel zueinander verlaufenden Teilstrahlen (12, 13) durchlaufen, so dass die Teilstrahlen (12, 13) auf einer Oberfläche der Probe (10) interferieren.
Abstract:
An optical system including at least a first lens, a partial reflector and a reflective polarizer is described. The optical system has an optical axis such that a light ray propagating along the optical axis passes through the first lens the partial reflector and the reflective polarizer without being substantially refracted. At least one major surface of the optical system is rotationally asymmetric about the optical axis. A major surface of the optical system may have a first portion defined by a first equation and a second portion adjacent the first portion defined by a different equation. The first lens may have a contoured edge adapted to be placed adjacent an eye of a viewer and substantially conform to the viewer's face.
Abstract:
A thermoformed multilayer reflective polarizer substantially rotationally symmetric about an optical axis passing thorough an apex of the thermoformed multilayer reflective polarizer and convex along orthogonal first and second axes orthogonal to the optical axis is described. The thermoformed multilayer reflective polarizer has at least one first location having a radial distance r1 from the optical axis and a displacement s1 from a plane perpendicular to the optical axis at the apex, where s1/r1 is at least 0.2. The thermoformed multilayer reflective polarizer may have at least one inner layer substantially optically uniaxial at at least one first location away from the apex. For an area of the reflective polarizer defined by s1 and r1, a maximum variation of a transmission axis of the reflective polarizer may be less than about 2 degrees.
Abstract:
Optical systems including an image surface and a stop surface are described. First second and third optical lenses, a partial reflector, a multilayer reflective polarizer and a quarter wave retarder are disposed between the image surface and the stop surface. A plurality of major surfaces are disposed between the image surface and the stop surface with each major surface convex toward the image surface along orthogonal first and second axes. At least six different major surfaces have six different convexities.
Abstract:
La présente invention concerne un appareil laser pour le recuit de revêtements déposés sur des substrats de grande largeur formé d'une pluralité de modules laser juxtaposables sans limitation particulière, dans lequel les modules laser génèrent des lignes laser élémentaires LA1, LA2) qui se combinent entre elles dans le sens de la longueur pour former une ligne laser unique, chaque ligne élémentaire (LA1, LA2) présentant un recouvrement (R) dans la direction de la longueur avec une ou deux lignes (LA2, LA1) laser élémentaires adjacentes; et au moins deux lignes laser élémentaires adjacentes (LA1, LA2) présentent un décalage (D) l'une par rapport à l'autre dans la direction de la largeur, ledit décalage (D) étant inférieur à la demi-somme des largeurs desdites au moins deux lignes laser élémentaires adjacentes (LA1, LA2); le recouvrement (R) desdites au moins deux lignes laser élémentaires adjacentes (LA1, LA2) étant tel que, en l'absence de décalage (D), le profil de puissance linéique de la ligne laser unique présente un maximum local au niveau de la zone de recouvrement (R).
Abstract:
There is provided assemblies for combining a group of laser sources into a combined laser beam. There is further provided a blue diode laser array that combines the laser beams from an assembly of blue laser diodes. There are provided laser processing operations and applications using the combined blue laser beams from the laser diode arrays and modules.
Abstract:
A luminaire having an array of light emitting diodes on a circuit board, and a generally planar lens element adjacent each of the LEDs, wherein each lens element has a plurality of concentric ridges projecting from a surface of the lens member to define Fresnel facets for redirecting light emitted from the corresponding LED, providing more uniform light distribution in a compact configuration.
Abstract:
A light-source includes a planar array of diode-laser bars and a plurality of turning- mirrors arranged to stack beams from the diode-laser bars in the fast-axis direction to provide a first combined beam. Six plane mirrors are arranged to divide the combined beam into three beam-slices, each having one-third the slow-axis width of the first combined beam, and add the beam-slices in the fast-axis direction to provide a second combined beam having about one-third the slow-axis width and three-times the fast-axis length of those of the first combined beam. A spherical mirror and a cylindrical mirror focus the second combined beam into an optical fiber.