Abstract:
A probe card for wafer-level testing a plurality of optoelectronic devices on a wafer is provided. The probe card has both electrical and optical functionality. The probe card comprises a plurality of lenslets aligned with the plurality of optoelectronic devices to improve the optical coupling efficiency between each of the plurality of optoelectronic devices and a plurality of optical waveguides located on a probe head.
Abstract:
A photodetection device 10 is provided wherein a condenser lens 12 is arranged in front of a photodetection element 11. This photodetection device is of high photodetection angular efficiency with a constant photodetection e.m.f. over a prescribed region, of high photodetection angular efficiency and does not pick up optical interference. By forming condenser lens 12 as a non-spherical lens that concentrates light onto a single point of convergence C without spherical aberration and moving the photodetection element 11 further towards lens 12 than the point of convergence C, it is arranged that light that has passed through condenser lens 12 is received over the entire region of the photodetection surface of photodetection element 11 and also that all of the light that is incident onto condenser lens 12 inclined at a prescribed angle is received by the photodetection surface.
Abstract:
Die Erfindung betrifft eine Sensoreinrichtung (10), insbesondere für ein Kraftfahrzeug, mit einem Lichtleitkörper (12), durch den Lichtstrahlung gebündelt und über mindestens ein Empfängerelement (16) detektierbar ist. Es wird vorgeschlagen, dass zur Vergrößerung der lichtemfindlichen Fläche des Empfängerelements (16) zwischen Lichtleitkörper (12) und Empfängerelement (16) ein Diffusorelement (18) zwischengeschaltet ist.
Abstract:
Dispositif permettant la détection dans-un champ large avec une optique compacte et simple. Il comporte, combiné à un dispositif photodétecteur, un récepteuroptique formé de deux diaphragmes (21,22) délimitant le champ et d'un élément optique diffuseur. Selon une réalisation préférée, une peinture diffusante (10) est déposée sur une surface plane d'une pièce mécanique (20), et un miroir de renvoi (30) permet de disposer vers l'arrière le photodétecteur ou un embout (23) de fibre optique (24) à laquelle il est couplé à distance. L'invention s'applique avantageusement à la détection de rayonnement laser.
Abstract:
An instrument for measuring the concentration of a living body ingredient based on infrared ray radiated from an eardrum while taking account of influence of thickness of the eardrum of a subject. The instrument for measuring the concentration of a living body ingredient comprises a section for detecting infrared light radiated from an eardrum, a section for acquiring thickness information on the thickness of the eardrum, and a section for operating the concentration of a living body ingredient based on detected infrared light and acquired thickness information. Since influence of the thickness of eardrum of a subject is included in infrared light radiated from the eardrum, concentration of the living body ingredient can be measured with high precision when it is calculated based on the thickness information on the eardrum as well as the detected infrared light.
Abstract:
A device for detecting optical radiation with a focusing means (1) for focusing to a focal plane and a detector means (8) with at least one detector element (12) in a detector plane (9) is described. It is primarily characterized by at least one optical fibre (2, 3) which guides radiation from the focal plane to the detector plane (9). An optical element (6) with substantially the same refractive index as that in the optical fibre (2, 3) is arranged between inlet plane (5) of the optical fibre and the focusing means (1). The radiation coming into said inlet plane (5) forms the angle (delta) with the longitudinal axis (10) of the optical fibre, which in turn forms the angle (alpha) with a normal to the exit plane (7) of the optical fibre. If (alpha) is greater than 1,5 (delta), radiation reflected from the detector plane (9) spreads outside the focusing means. (alpha) shall be smaller than the angle that means total reflection in the exit plane (7) of the optical fibre.
Abstract:
A light energy testing device includes a light source emitting parallel light, a Fresnel lens concentrating the parallel light, a fiber array consisting of a plurality of optical fibers, and an energy detecting device. Each fiber includes a light incident and emitting surface. The light incident surfaces are coplanar to define a light receiving surface. The light emitting surfaces cooperatively define a light transmitting surface. The energy detecting device includes a plurality of sensor units optically coupled with the light transmitting surface and a testing device connected to the sensor units. The parallel light is focused by the Fresnel lens to irradiate the light receiving surface. The sensor units generate energy signals according to the light from the light transmitting surface. The energy detecting device calculates a light energy distribution according to the energy signals.
Abstract:
A structure includes a film having a plurality of nanoapertures. The nanoapertures are configured to allow the transmission of a predetermined subwavelength of light through the film via the plurality of nanoapertures. The structure also includes a semiconductor layer in connection with the film to facilitate the detection of the predetermined subwavelength of light transmitted through the film.