Abstract:
The invention relates to a device for detecting the phase and amplitude of electromagnetic waves. The device comprises at least two modulation photo gates (1, 2) which are sensitive to the electromagnetic waves. The device also comprises accumulation gates (4, 5) which are assigned to said modulation photo gates and which are not photosensitive, and has electric connections for the modulation photo gates (1, 2) and for the accumulation gates (4, 5) such that the latter can be connected to a readout device and the previous can be connected to a modulating device. Said modulating device increases and decreases the potential of the modulation photo gates (1, 2) in relation to one another and in relation to the preferably constant potential of the accumulation gates (4, 5) corresponding to a desired modulation function. The invention provides that a plurality of modulation photo gates (1, 2) and accumulation gates (4, 5) are provided in the shape of long and narrow, parallel strips which form a PMD pixel in groups.
Abstract:
The invention concerns a method for characterizing mode group properties of multimodal light traveling through an optical component, comprising: - providing a Mode Group Separating optical fiber in an optical path between a light source and said optical components - launching reference pulses of light with a wavelength λt from said light source through said Mode Group Separating optical fiber into said optical component at discrete intervals between a core center and a core radius of said fiber. The Mode Group Separating optical fiber is a multimode fiber with an a-profile graded index core with an α-value chosen such that said fiber satisfies the following criterion at the wavelength λt : formula (I) where: - Δ Ƭ is a time delay difference between consecutive mode groups; - L is a length of said fiber; - Δ T REF is a Full Width at Quarter Maximum of said reference pulses.
Abstract:
Die vorliegende Erfindung betrifft einen Photomischdetektor mit einer photoempfindlichen Schicht, mindestens zwei Modulationsgates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) und mindestens zwei mit der photoempfindlichen Schicht verbundenen Ausleseelektroden (1, 2, 101, 102, 201, 202, 301, 302, 401, 402, 501, 502, 601, 602), wobei die Modulationsgates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) mit einer Modulationseinrichtung verbindbar sind, welche das Potential der Modulationsgates relativ zueinander und relativ zu dem vorzugsweise konstanten Potential der Ausleseelektroden entsprechend einer gewünschten Modulationsfunktion anhebt und absenkt. Um den bekannten Photomischdetektor so weiter zu entwickeln, daß er eine erhöhte Ladungsträgerkonversionseffizienz und verringerte Dunkelströme zeigt, wird erfindungsgemäß vorgeschlagen, daß die Ausleseelektroden (1, 2, 101, 102, 201, 202, 301, 302, 401, 402, 501, 502, 601, 602) jeweils mindestens zwei im Abstand nebeneinander angeordnete diskrete Elektrodenabschnitte (1A-1E, 2A-2E) aufweisen.
Abstract:
An arrangement (100, 200, 300, 400, 500) for providing visual effects comprising light emitting members (102, 202, 302, 502) attached to a target (104, 204), imaging means (106) for locating said light emitting members (102, 202, 302, 502), a computing unit (110) for receiving real-time location information data from the imaging means (106) and controlling a laser projector (112) based on the received location information data, a laser projector (112) projecting a laser beam (114) responsive to control information provided by the computing unit (110), and a partially reflecting mirror (106) reflecting the projected laser beam (114) with respect to the light emitting members (102, 202, 302, 502) towards and/or in the vicinity of the light emitting members (102, 202, 302, 502) and passing the light (108) from the light emitting members (102, 202, 302, 502) to the imaging means (106). Related method is presented.
Abstract:
The invention concerns a method for characterizing mode group properties of multimodal light traveling through an optical component, comprising: - providing a Mode Group Separating optical fiber in an optical path between a light source and said optical components - launching reference pulses of light with a wavelength λt from said light source through said Mode Group Separating optical fiber into said optical component at discrete intervals between a core center and a core radius of said fiber. The Mode Group Separating optical fiber is a multimode fiber with an a-profile graded index core with an α-value chosen such that said fiber satisfies the following criterion at the wavelength λt : formula (I) where: - Δ Ƭ is a time delay difference between consecutive mode groups; - L is a length of said fiber; - Δ T REF is a Full Width at Quarter Maximum of said reference pulses.
Abstract:
PROBLEM TO BE SOLVED: To attain the improvement of charge conversion efficiency and lowering of dark current. SOLUTION: In an optical mixing system provided with a photosensitive layer, at least two modulation gates and at least two reading electrodes are connected to the photosensitive layer, and the potential of the modulation gate are mutually connected between both the gates. The modulation gate is connected to a modulation device fluctuating to the reading electrode corresponding to a desired modulation function, preferably, constant potential. In order to attain the improvement of the charge conversion efficiency and the lowering of the dark current by further developing the known optical mixing system, each reading electrode has at least two separation electrode parts arranged at a constant interval. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
광원에 의해 산출된 펄스형 광 빔의 스펙트럼 특성은 복수의 스텝을 포함하는 패턴 주기를 가지는 사전 결정된 반복 패턴을 기초로 펄스형 광 빔의 파장을 변경하는 단계로서, 패턴 주기 내의 각각의 스텝에 대한 기준선 파장으로부터의 파장 오프셋 만큼 펄스형 광 빔의 파장을 시프트하는 것을 포함하는 상기 변경하는 단계; 패턴에 걸쳐 파장이 변경될 때 패턴 주기 내의 각각의 스텝에 대한 광 빔의 파장을 측정하는 단계; 및 패턴 주기 내의 각각의 스텝에 대한 광 빔의 측정된 파장을 적어도 일부 기초로 하여 패턴 주기 내의 모든 스텝을 포함하는 평가 윈도우에 걸쳐 펄스형 광 빔의 스펙트럼 특성을 추정하는 단계에 의해 추정된다.