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公开(公告)号：US06940589B1
公开(公告)日：2005-09-06
申请号：US10381370
申请日：2000-09-25
Applicant: Motohiro Suyama , Yoshihiko Kawai , Tetsuya Morita , Koichiro Oba
Inventor： Motohiro Suyama , Yoshihiko Kawai , Tetsuya Morita , Koichiro Oba
CPC classification number: G01J1/44 , G01J2001/442 , G01J2001/4433 , G01J2001/444 , G01J2001/4466
Abstract: An optical measurement apparatus 10 primarily includes: a photon detection unit 12 for detecting incident photons, a time signal output unit 14 for outputting a time signal, and a storage unit 16 for storing the time signal outputted from the time signal output unit 14 when the photon detection unit 12 detects photons. The photon detection unit 12 includes a HPD 24 having a photocathode 24a and an APD 24b, a TZ amplifier 26, a peak holding circuit 28, and an A/D converter 30. The time signal output unit 14 includes a timer 32 and a counter 34. The storage unit 16 includes a comparator 36 and a memory 38. When photons impinge on the HPD 24, a trigger signal is outputted from the comparator 36, causing the photon-number outputted from the A/D converter 30 and the time data outputted from the counter 34 to be stored in the memory 38.
Abstract translation: 光学测量装置10主要包括：用于检测入射光子的光子检测单元12，用于输出时间信号的时间信号输出单元14，以及用于存储从时间信号输出单元14输出的时间信号的存储单元16 光子检测单元12检测光子。 光子检测单元12包括具有光电阴极24a和APD24b，TZ放大器26，峰值保持电路28和A / D转换器30的HPD 24。 时间信号输出单元14包括计时器32和计数器34。 存储单元16包括比较器36和存储器38。 当光子撞击HPD24时，从比较器36输出触发信号，从A / D转换器30输出的光子数和从计数器34输出的时间数据存储在存储器38中。
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公开(公告)号：US10149365B2
公开(公告)日：2018-12-04
申请号：US15481770
申请日：2017-04-07
Applicant: Lumenetix, Inc.
Inventor： Matthew D. Weaver
Abstract: Some embodiments include a method of operating a tunable light module. The method can include driving a lamp in the tunable light module, having lamps of at least two colors, to produce a colored light according to the color mixing plan that corresponds to a correlated color temperature (CCT); measuring a light characteristic of the lamp using a light sensor; detecting a degradation level by comparing the measured light characteristic against an expected light characteristic; and adjusting a current level for driving the lamp at the CCT by referencing the color mixing plan and an alternative coefficient corresponding to the degradation level.
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公开(公告)号：US3353439A
公开(公告)日：1967-11-21
申请号：US27911263
申请日：1963-05-09
Applicant: ROSENBERRY W K
Inventor： ZOLTAN TARCZY-HORNOCH
IPC: G01J7/00
CPC classification number: G01J7/00
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44.发明专利
公开(公告)号：JPH11237312A
公开(公告)日：1999-08-31
申请号：JP3909998
申请日：1998-02-20
Applicant: ANRITSU CORP , NIPPON TELEGRAPH & TELEPHONE
Inventor： OTANI AKIHITO , OTSUBO TOSHINOBU , TAKARA HIDEHIKO , KAWANISHI SATOKI , YAMABAYASHI YOSHIAKI
Abstract: PROBLEM TO BE SOLVED: To precisely measure the wavelength dispersion and wavelength variance of a short body to be measured. SOLUTION: An instrument is provided with a 1st pulse light source 22 with variable wavelength which is driven with a reference signal, an optical demultiplexer 24 which receives a 1st light pulse emitted by the 1st pulse light source and demultiplexes it into a reference light pulse and a light pulse to be made incident on the body to be measured, an optical multiplexer 26 which multiplexes the reference light pulse and the projection light pulse passed through the body to be measured and outputs the multiplexed light, and a 2nd pulse light source 23 which generates a 2nd light pulse delayed by a specific time in every cycle of the 1st light pulse. Further, a sampling means 27 which receives the multiplexed light and 2nd light pulse to obtain a signal of a train of light pulses proportional to the intensity of the multiplexed light obtained in synchronism with the 2nd light pulse and a signal processing means 37 which obtains an envelope consisting of peak parts of respective light pulses constituting the train of the light pulses from the signal of the train of light pulses from the sampling means 27 are provided to constitute the wavelength dispersion measuring instrument.
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公开(公告)号：JPH0854288A
公开(公告)日：1996-02-27
申请号：JP20791794
申请日：1994-08-09
Applicant: NAKAMURA HIROSHI
Inventor： NAKAMURA HIROSHI
IPC: G01J7/00
Abstract: PURPOSE:To provide a measuring apparatus for verifying whether such a theory that a light propagating speed has invariance, is correct or not. CONSTITUTION:A synchrotron radiation light radiated from a charged particle accelerated at a high speed by utilizing synchrotron being a particle accelerator 2 is directly incident on a mirror 8 for comparing the incident angle with a reflecting angle without passing even once through and without reflecting via a lens, a glass, a mirror, and a vacuum shut-off shielding material in vacuum. The reflected light of the mirror 8 is projected on a measuring surface 21, and a projection point on the surface 12 of the reflected light from the inclined angle to the incident light of the mirror 8 when it is assumed that the propagating speed of the synchrotron radiation light has invariance is predicted. Whether the projection point on the surface 12 of the actual reflected light is deviated from the predicted point or not is observed, thereby verifying the invariance of the light propagating speed.
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Patent Agency Ranking
公开(公告)号：JPS60127430A
公开(公告)日：1985-07-08
申请号：JP23549483
申请日：1983-12-14
Applicant: FUJITSU LTD
Inventor： SOEDA KAZUHIKO
Abstract: PURPOSE:To obtain a wavelength-dispersion coefficient in a desired frequency range by a single light source, by processing the phase characteristics in the base-band characteristics of a light signal. CONSTITUTION:Light from a light source (laser diode 2) having a light emitting spectrum A(alpha) undergoes amplitude modulation at a frequency (f), and the obtained signal light is transmitted to a fiber 5 to be measured. At both ends of the fiber 5, light receivers 6 and 8 are provided. The base band characteristics of the received light signals are measured. The expression is optimally approximated to the phase characteristics in the base band characteristics by using various wavelength-dispersion coefficients (m). In the expression, omega is the modulation angle frequency of the light signal, lambda is the wavelength of the light signal and L is the length of the optical fiber. Then, the wavelength-dispersion coefficient in the vicinity of the effective central wavelength lambda0 of the light emitting spectrum A(lambda) of the fiber 5 is obtained by the wavelength-dispersion coefficient (m) in the optimally approximated expression. Thus the wavelength-dispersion coefficient in the desired frequency range can be obtained by a single light source.
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公开(公告)号：CN203148570U
公开(公告)日：2013-08-21
申请号：CN201320062876.X
申请日：2013-02-04
Applicant: 江汉大学
Inventor： 雷海东
IPC: G01J7/00
Abstract: 本实用新型涉及空间物理学领域，尤其涉及与狭义相对论有关的一种光速各向异性的测量装置。包括空间冷原子钟系统和第一、第二微波时频传输系统，所述空间冷原子钟系统位于地球外空间的可移动装置上，所述第一、第二微波时频传输系统分别位于不同地理位置的地球表面；所述空间冷原子钟系统与所述第一、第二微波时频传输系统之间通过电磁波传递时间信号。本实用新型能在更高的精度上验证光在不同转播方向速度是否一样。
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公开(公告)号：CN202631173U
公开(公告)日：2012-12-26
申请号：CN201220196015.6
申请日：2012-05-03
Applicant: 雷衍章
Inventor： 雷衍章
Abstract: 本实用新型涉及一种光子作用力及光速测试装置，包括发射出光束的光源、在所述光束传输路径两侧设置的一对极板、调节所述极板之间的距离的间距调节器、以及用于展示经过所述极板的光束的光斑的展示器件。通过改变不同的极板及测试条件，并通过光束投影到展示器件上的光斑，来观测光斑的变换(化)，从而推导、测算出光子与光子之间是否有作用力，什么对光子有作用力及光速，是一种创新的仪器设备，为光学及原子结构研究提供了有力的支持。
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