摘要:
A pixel is formed in a semiconductor substrate (S) with a plane surface for use in a photodetector. It comprises an active region for converting incident light (In) into charge carriers, photogates (PGL, PGM, PGR) for generating a lateral electric potential (Φ(x)) across the active region, and an integration gate (IG) for storing charge carriers generated in the active region and a dump site (Ddiff). The pixel further comprises separation-enhancing means (SL) for additionally enhancing charge separation in the active region and charge transport from the active region to the integration gate (IG). The separation-enhancing means (SL) are for instance a shield layer designed such that for a given lateral electric potential (Φ(x)), the incident light (In) does not impinge on the section from which the charge carriers would not be transported to the integration gate (IG).
摘要:
A pixel is formed in a semiconductor substrate (S) with a plane surface for use in a photodetector. It comprises an active region for converting incident light (In) into charge carriers, photogates (PGL, PGM, PGR) for generating a lateral electric potential (Φ(x)) across the active region, and an integration gate (IG) for storing charge carriers generated in the active region and a dump site (Ddiff). The pixel further comprises separation-enhancing means (SL) for additionally enhancing charge separation in the active region and charge transport from the active region to the integration gate (IG). The separation-enhancing means (SL) are for instance a shield layer designed such that for a given lateral electric potential (Φ(x)), the incident light (In) does not impinge on the section from which the charge carriers would not be transported to the integration gate (IG).
摘要:
The invention provides an integrated optical waveguide sensor module (200) with reduced signal modulation and increased sensitivity. An optical waveguide sensor module (200) comprises an optically transparent substrate (210) having a first and a second interface and an optical waveguide film (220) disposed on the substrate (210) with the first interface (225) therebetween, wherein the film (220) comprises at least one grating pad (235) that is optically coupled therewith. The substrate (210) and the optical waveguide film (220) are configured to reduce parasitic interference within the substrate.
摘要:
A dazzle protection unit (1) for a portable dazzle protection device that includes an optical dazzle protection filter (3) and at least one sensor (5) for the sensing of incident light and for controlling the translucency of the filter (3). In doing so, the dazzle protection unit (1) includes a light capturing element (4), which captures incident light on a light capturing surface area (12) and conducts it to the at least one sensor (5). The light capturing element (4) preferably captures the light from several areas located at a distance from one another on a front side of the dazzle protection unit (1). Means (8) for coupling light into the light capturing element (4) are situated at a distance from one another.
摘要:
A glare protection filter, in particular for a welding mask or welding protection device including an electro-optical light filter 10 that includes at least one electro-optical cell (12, 13, 14, 15, 16, 17, 18) by which an amount of light transmitted through the filter is reducible, wherein at least a first one of the electro-optical cells comprises two parallel transparent plates (12, 18) having transparent electrodes (13, 17) on the inner surfaces thereof and containing a liquid crystal material (15) and orientation layers (14, 16) defining an anchoring of the liquid crystal material (15). Upon application of a voltage of less than 30V to the electrodes (13, 17), the molecule orientation in the liquid crystal material (15) near at least one of the orientation layers (14, 16) is subject to rotation of at least 10°.
摘要:
An integrated optical sensor for, for example, a (bio)chemical sensor has an optical waveguide (2) having at least two coupling regions (3, 5), which are separated by at least one measurement region (4). A first wave is excited in the waveguide (2) by the first coupling region (3) and passes through the measurement region (4) and the second coupling region (5). A second wave is excited in the second coupling region (5) and subsequently interferes with the first wave. Here, the reduction in amplitude of the first wave by the second coupling region (5) is less than 95%.
摘要:
An integrated optical sensor for, for example, a (bio)chemical sensor has an optical waveguide (2) having at least two coupling regions (3, 5), which are separated by at least one measurement region (4). A first wave is excited in the waveguide (2) by the first coupling region (3) and passes through the measurement region (4) and the second coupling region (5). A second wave is excited in the second coupling region (5) and subsequently interferes with the first wave. Here, the reduction in amplitude of the first wave by the second coupling region (5) is less than 95%.
摘要:
An optical protective filter (1, 3) includes at least one first and one second partial lens (1, 2), wherein the first partial lens (1) includes a flexible substrate (4). On the substrate (4), a thin film filter (2) is applied, and the thin film filter (2) comprises at least one metallic layer (8) with a layer thickness of between 2 nm and 100 nm. The substrate (4) in the completed protective filter, thanks to its flexibility, is bent into the final shape as a whole; this in contrast to such lenses, which while comprising a curved shape and curved surfaces, have been ground or cast into this curved shape.
摘要:
An electro-optical glare protection filter for e.g. a protective mask for welding comprises at least two successively arranged liquid crystal cells (20, 30) of the type “twisted nematic” (TN) with polarization layers (21, 25, 31, 35), wherein the polarization directions of two respective polarization layers (21, 25, 31, 35), which are allocated to a liquid crystal cell (20, 30) are respectively twisted in relation to one another.Hereby the polarization directions of two respective polarization layers (21, 25, 31, 35), which are allocated to a liquid crystal cell (20, 30) are uncrossed, i.e. twisted by an angle different to 90° in relation to one another.
摘要:
A dazzle protection unit (1) for a portable dazzle protection device that includes an optical dazzle protection filter (3) and at least one sensor (5) for the sensing of incident light and for controlling the translucency of the filter (3). In doing so, the dazzle protection unit (1) includes a light capturing element (4), which captures incident light on a light capturing surface area (12) and conducts it to the at least one sensor (5). The light capturing element (4) preferably captures the light from several areas located at a distance from one another on a front side of the dazzle protection unit (1). Means (8) for coupling light into the light capturing element (4) are situated at a distance from one another.