-
公开(公告)号：US5248884A
公开(公告)日：1993-09-28
申请号：US700925
申请日：1984-09-20
IPC分类号： H01L31/0296 , H01L31/09 , H01Q3/26
CPC分类号： H01Q3/2676 , H01L31/02966 , H01L31/09 , G01J5/0837
摘要： An infrared detector comprises a thin film of photo-responsive material on transparent dielectric material with an array of planar antennae adjacent to the film surface. The antennae are separate from ohmic contacts arranged to connect the film to an external circuit. The antennae concentrate radiation in fringe fields at antenna edges and extremities interacting with the photo-responsive material. The detectors may be photovoltaic or photoconductive. The antennae may be rectangular, bow-tie, cruciform, elliptic, circular or square, and are dimensioned for resonance (preferably half-wavelength resonance) at frequencies within the photo-responsive material absorption band. Half-wavelength resonant antennae are best matched by F/0.7 optics. The detector may be a reticulated array. The dielectric material may be formed as a lens.
摘要翻译： 红外检测器包括在透明电介质材料上的光响应材料薄膜，具有与膜表面相邻的平面天线阵列。 天线与被布置为将膜连接到外部电路的欧姆接触体分开。 天线将天线边缘和末端的边缘区域中的辐射集中在与光响应材料相互作用的位置。 检测器可以是光电或光电导。 天线可以是矩形，弓形，十字形，椭圆形，圆形或正方形，并且在光响应材料吸收带内的频率处的尺寸用于共振（优选为半波长共振）。 半波长谐振天线与F / 0.7光学器件最匹配。 检测器可以是网状阵列。 电介质材料可以形成为透镜。
-
2.发明授权Photoconductive detector with an A/C bias and responsivity dependent upon the polarity of the bias 失效具有A / C偏置和响应度的光导检测器取决于偏置的极性
公开(公告)号：US4551623A
公开(公告)日：1985-11-05
申请号：US441867
申请日：1982-11-15
IPC分类号： G01J1/44 , G01J5/30 , H01L27/146 , H01L31/0248 , H01L31/09 , H04N5/33 , H04N5/369 , H04N5/372 , H01J40/14
CPC分类号： H01L27/14669 , G01J5/30 , H01L31/09 , H04N3/1518 , H04N3/1525 , H04N5/33
摘要： An alternating bias is applied to a modified photoconductive detector and photosignal extracted from each detector element. This extraction may be performed using an integrator to produce a dc signal output, or alternatively by using a high-pass filter or phase-sensitive detector to extract a photosignal at an harmonic of the bias frequency. The detector used is provided with elements that have a responsivity that is a different function of bias amplitude for each polarity. The detector element may be shaped with variation in width or depth, to produce this differential responsivity. Alternatively element bias contacts may be of different width to produce field gradient and differential responsivity. It is advantageous to obscure a part of each element area by including an opaque mask.
摘要翻译： 将交替偏压施加到从每个检测器元件提取的修饰的光电导检测器和光信号。 可以使用积分器来执行该提取以产生直流信号输出，或者通过使用高通滤波器或相敏检测器以偏置频率的谐波提取光信号。 使用的检测器具有对每个极性具有不同偏置幅度函数的响应度的元件。 检测器元件可以被成形为具有宽度或深度的变化，以产生该差分响应度。 或者，元件偏置触点可以具有不同的宽度以产生场梯度和差分响应度。 通过包括不透明掩模来模糊每个元件区域的一部分是有利的。
-
公开(公告)号：US4572953A
公开(公告)日：1986-02-25
申请号：US485888
申请日：1983-04-18
摘要： An infra red photo detector system comprises a piece of detector material, such as Cd.sub.x Hg.sub.1-x Te, InSb, InAs, etc, carrying at least a pair of spaced electrodes. An optical arrangement directs a small spot of radiation onto the detector. The position of the small spot on the much larger detector is found by applying an electrical bias between the electrodes causing a drift of photo carriers. The bias may be of alternating polarity and the detector output measured at each polarity. Alternatively a high frequency bias may be applied and the A.C. offset from the detector used to indicate spot position. Alternatively the spot position may be modulated or swept along the detector by a mirror moving in a sawtooth scanning action.
摘要翻译： 红外光电检测器系统包括一块检测器材料，例如CdxHg1-xTe，InSb，InAs等，其携带至少一对隔开的电极。 光学装置将小的辐射点引导到检测器上。 通过在电极之间施加电偏压导致光载体的漂移，可以发现较大检测器上的小斑点的位置。 该偏压可以是交替极性，并且在每个极性处测量检测器输出。 或者，可以施加高频偏置，并且来自检测器的交流偏移用于指示光斑位置。 或者，斑点位置可以通过以锯齿扫描动作移动的反射镜沿检测器被调制或扫掠。
-
4.发明授权Photoconductive detector arranged for bias field concentration at the output bias contact 失效光电导检测器设置在输出偏置触点处的偏置场浓度
公开(公告)号：US4926228A
公开(公告)日：1990-05-15
申请号：US811304
申请日：1985-12-16
IPC分类号： H01L27/146 , H01L31/0224 , H01L31/09
CPC分类号： H01L27/14669 , H01L31/0224 , H01L31/09
摘要： A detector, of photosensitive semiconductor material with input and output bias contacts. To improve both frequency response and spatial resolution, minority carriers having tendency to accumulate in the vicinity of the output bias contact are instead rapidly swept out, being driven towards this contact by a concentrated electric field. To produce a local field concentration, the output bias contact may be extended towards the input bias contact, or the detector material near this contact may be configured by slotting or tapering.
摘要翻译： 具有输入和输出偏置触点的感光半导体材料的检测器。 为了改善频率响应和空间分辨率，具有积累在输出偏置接触附近的倾向的少数载流子被快速地扫过，被集中的电场驱向该接触。 为了产生局部场浓度，输出偏置触点可以朝向输入偏置触点延伸，或者该触点附近的检测器材料可以通过开槽或渐缩来配置。
-
公开(公告)号：US06359283B1
公开(公告)日：2002-03-19
申请号：US09451111
申请日：1999-11-30
IPC分类号： G01T124
CPC分类号： H01L27/14649 , H01L27/1462 , H01L27/14625
摘要： A noise reduced photon detector incorporates an array (10) of semiconductor diode detector elements (12). Each element (12) has an extrinsic active layer (20) sandwiched between two layers (18, 22) of wider bandgap and mutually opposite conductivity type. These layers are in turn sandwiched between two further layers (16, 24) of wider bandgap than the active layer (20) and of higher doping than the other layers (18, 22). A mirror (34) extends round much the array (10) and isolates each element (12) from photons emitted by other elements (12). In operation the elements (12) are reverse biased and exhibit negative luminescence which reduces their photon emission. These two effects reduce unwanted photon generation and absorption, and consequently photon noise is also reduced.
摘要翻译： 噪声降低的光子检测器包括半导体二极管检测器元件（12）的阵列（10）。 每个元件（12）具有夹在更宽带隙和相互相反导电类型的两层（18,22）之间的外在有源层（20）。 这些层又被夹在比有源层（20）更宽的带隙的两个另外的层（16,24）之间，并且比其它层（18,22）具有更高的掺杂。 反射镜（34）围绕阵列（10）延伸并且将每个元件（12）与由其它元件（12）发射的光子隔离。 在操作中，元件（12）被反向偏置并且表现出负的发光，这降低了它们的光子发射。 这两种效应减少了不必要的光子产生和吸收，因此光子噪声也降低了。
-
公开(公告)号：US5068524A
公开(公告)日：1991-11-26
申请号：US571587
申请日：1990-08-23
IPC分类号： H01L31/10 , H01L31/02 , H01L31/0232 , H01L31/0264 , H01L31/0296 , H01L31/101 , H01L31/111
CPC分类号： H01L31/0232 , H01L31/02966 , H01L31/101 , H01L31/111
摘要： A photodetector (10) of the non-equilibrium kind incorporates three successively disposed sections (14, 16, 18) of like layer construction. Each of the sections (e.g. 14) contains three layers (14A, 14B, 14C) of semiconductor materials of the Cd.sub.x Hg.sub.1-x Te alloy system (CMT). The central layer (14B) of each section (14) is of narrow bandgap CMT, i.e. x=0.19 or 0.265 for absorption at 3-5 .mu.m or 8-12 .mu.m, and has very low doping (10.sup.15 cm.sup.-3) providing intrinsic conductivity. It is 1.5 .mu.m thick, less than one third of an optical absorption length. The outer layers of each section (14A, 14B) are 10 .mu.m thick and are of wide bandgap CMT, i.e. x=0.4. They have respective n and p type dopant concentrations of 3.times.10.sup.16 cm.sup.-3 providing extrinsic conductivity. Each central layer (14B) is therefore bounded by an excluding contact (14AB) and an extracting contact (14BC), which depress its carrier concentration to an extrinsic level under the action of electrical bias. This simulates cooling to low temperature. The central layers (14B to 18B) have a collective thickness (4.5 .mu.m) approaching an optical absorption length (6 .mu.m). A mirror (20) is arranged to return through the photodetector (10) radiation transmitted by it. This presents a total active region thickness six times that of an individual central region (14B) and greater than an optical absorption length. The photodetector (10) consequently has high quantum efficiency despite the deficiencies of n-type CMT material in this regard.
摘要翻译： PCT No.PCT / GB89 / 01406 Sec。 371日期1990年8月23日第 102（e）1990年8月23日PCT PCT公布1989年11月24日PCT。 第WO90 / 06597号公报 日期：1990年6月14日。非平衡类型的光检测器（10）包含相似层结构的三个连续设置的部分（14,16,18）。 每个部分（例如14）包含CdxHg1-xTe合金系统（CMT）的半导体材料的三层（14A，14B，14C）。 每个部分（14）的中心层（14B）具有窄带隙CMT，即在3-5μm或8-12μm时吸收的x = 0.19或0.265，并且具有非常低的掺杂（1015cm-3） 提供内在的电导率。 厚度为1.5μm，小于光吸收长度的三分之一。 每个部分（14A，14B）的外层是10微米厚，并且具有宽带隙CMT，即x = 0.4。 它们具有各自的n和p型掺杂剂浓度为3×10 16 cm -3，提供外在电导率。 因此，每个中心层（14B）由排斥接触（14AB）和提取接触（14BC）限制，其在电偏压的作用下将其载流子浓度降低到外在水平。 这将模拟冷却至低温。 中心层（14B至18B）具有接近光学吸收长度（6μm）的总体厚度（4.5μm）。 反射镜（20）被布置成通过光电检测器（10）返回由其透射的辐射。 这提供了单个中心区域（14B）的六倍的总有源区厚度并且大于光吸收长度。 因此，尽管在这方面存在n型CMT材料的不足，光电检测器（10）具有高的量子效率。
-
公开(公告)号：US4691107A
公开(公告)日：1987-09-01
申请号：US784469
申请日：1985-10-04
摘要： An infra red photo detector system comprises a piece of detector material, such as Cd.sub.x Hg.sub.1-x Te, InSb, InAs, etc, carrying at least a pair of spaced electrodes. An optical arrangement directs a small spot of radiation onto the detector. The position of the small spot on the much larger detector is found by applying an electrical bias between the electrodes causing a drift of photo carriers. The bias may be of alternating polarity and the detector output measured at each polarity. Alteratively a high frequency bias may be applied and the A.C. offset from the detector used to indicate spot position. Alternatively the spot position may be modulated or swept along the detector by a mirror moving in a sawtooth scanning action.
-
8.发明授权
公开(公告)号：US4535232A
公开(公告)日：1985-08-13
申请号：US441863
申请日：1982-11-15
CPC分类号： G01J5/30 , H01L27/14669 , H01L31/09
摘要： It is a problem extracting the photosignal component from detector output, to the exclusion of pedestal bias response. To overcome this, a time varying bias signal is applied to each element of the detector. The duration of the time varying bias signal, or if a periodic signal, the signal period, is chosen as long compared to photocarrier lifetime and the signal amplitude is large enough to range over a non-linear portion of the responsivity characteristic of each element. The bias signal contains a d.c. component so that the bias signal ranges about a point of operation--a point of asymmetry lying on the responsivity characteristic. The photosignal component of the output signal may be removed by time averaging or by harmonic separation. Alternatively the bias signal may be modulated, and the photosignal component extracted by detection of demodulated signal.
摘要翻译： 从检测器输出中提取光信号分量是排除基座偏置响应的问题。 为了克服这一点，对检测器的每个元件施加时变偏置信号。 时间偏移信号的持续时间，或者如果周期信号，信号周期，与光载流子寿命相比被选择为长，并且信号幅度足够大到在每个元件的响应特性的非线性部分上的范围。 偏置信号包含直流 使得偏置信号围绕操作点 - 位于响应特性上的不对称点。 可以通过时间平均或谐波分离来消除输出信号的光信号分量。 或者，可以调制偏置信号，并通过检测解调信号提取光信号分量。
-
公开(公告)号：US4599759A
公开(公告)日：1986-07-15
申请号：US615918
申请日：1984-05-31
申请人： Frank C. Price , Anthony M. White
发明人： Frank C. Price , Anthony M. White
CPC分类号： A43D111/00 , B23Q7/04 , B23Q7/06 , B23Q7/1421 , B65G47/904
摘要： The transfer apparatus comprises a transfer arm (16) and a distributor (18). The transfer arm has two axes of movement (22,26) and is non-extendable so that it moves between a take-off station and an intermediate station (I) through a fixed distance. The distributor (18) has a table (50) which receives a shoe (S) at the intermediate station (I). Furthermore, the table (50) can be positioned at any one of four stations (I,F1,F2,F3) each aligned with a channel (12) of a heat setting apparatus (14). A pneumatic control circuit causes shoes (S) fed successively to the table (50) to be transferred in a sequence to the channels (12) by operation of pusher means.The apparatus is suitable for transferring shoes from a lasting machine, a shoe support (10) of which can be positioned at the take-off station, to a heat setting apparatus (14).
摘要翻译： 传送装置包括传送臂（16）和分配器（18）。 传送臂具有两个移动轴线（22,26），并且是不可延伸的，使得其在起飞站和中间站（I）之间移动一定距离。 分配器（18）具有在中间站（I）处接收鞋（S）的台（50）。 此外，台（50）可以位于与热定形装置（14）的通道（12）对准的四个站（I，F1，F2，F3）中的任一个处。 气动控制电路使连续送到工作台（50）的鞋（S）通过推动装置的操作依次传送到通道（12）。 该设备适用于将鞋子从持久机器转移到热定型设备（14）上，鞋子支架（10）可以位于起飞站。
-
公开(公告)号：USRE38582E1
公开(公告)日：2004-09-14
申请号：US10179342
申请日：2002-06-26
申请人： Anthony M. White
发明人： Anthony M. White
IPC分类号： H01L3100
CPC分类号： H01L31/1032 , H01L29/22 , H01L29/861 , H01L31/02966
摘要： A multi-layer Auger suppressed diode having at least two exclusion interfaces and at least two extraction interfaces. A specific embodiment has two composite contacts, each consisting of a heavily doped layer (3, 4) and a buffer layer (8, 9) of lower doped, high bandgap material sandwiched between the heavily doped layer and the active region (2) of the device.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.024 秒)
