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公开(公告)号：US07066606B2
公开(公告)日：2006-06-27
申请号：US10477873
申请日：2002-05-16
IPC分类号： G03B21/00
CPC分类号： H04N9/3182 , H04N5/74 , H04N9/3129 , H04N9/3194
摘要： A projection device comprises a matrix (1) of semiconductor lasers, an optical system (2) for projecting the matrix (1) on an element (3) illuminated by the projection device, and a control device (9) for controlling the semiconductor lasers through a feedback device. The feedback device comprises a first detector (13, 14) that generates a first signal representing the detected intensity. The semiconductor lasers are controlled and the intensity of the light spot is adjusted to a desired value by the feedback device. Light from a semiconductor laser is detected by a second detector (18), and a value of the detected signal is stored in an addressable memory cell. The amount of emitted light is stabilized for each semiconductor laser by detection through the second detector (18) and comparison with the value stored in the memory (29) for the relevant controlled semiconductor laser.
摘要翻译： 投影装置包括半导体激光器的矩阵（1），用于将矩阵（1）投影在由投影装置照射的元件（3）上的光学系统（2），以及用于控制半导体激光器 通过反馈设备。 反馈装置包括产生表示检测到的强度的第一信号的第一检测器（13,14）。 控制半导体激光器，并通过反馈装置将光点的强度调整到期望值。 来自半导体激光器的光由第二检测器（18）检测，检测信号的值存储在可寻址存储单元中。 对于每个半导体激光器，通过第二检测器（18）的检测和与用于相关的受控半导体激光器存储在存储器（29）中的值进行比较，发射光的量被稳定。
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公开(公告)号：US06707027B2
公开(公告)日：2004-03-16
申请号：US09992709
申请日：2001-11-06
IPC分类号： H01J4014
CPC分类号： G06F3/0421 , G01B9/02092 , G01P3/366 , G01P13/04 , G01S7/4811 , G01S7/4916 , G01S7/497 , G01S17/50 , G01S2007/4977
摘要： An optical input device for an apparatus generates input signals by moving the device and an object (15) relative to each other and measures the movement by the effects of self-mixing in a diode laser (3, 5) and Doppler shift caused by the movement. For each measuring axis (X, Y, Z), radiation from a diode laser (3, 5) is converged on a window (12) across which the object (15) moves. Part of the radiation scattered by the object, whose frequency is Doppler-shifted due to the movement, re-enters the laser cavity (20) and causes a change in cavity properties. By measuring such a change, for example, by a photo diode, information about the movement is obtained. As the input device is small and cheap, it can be used in a number of different consumer apparatus.
摘要翻译： 用于装置的光学输入装置通过相对于彼此移动装置和物体（15）来产生输入信号，并且通过二极管激光器（3,5）中的自混合的影响和由二极管激光器（3,5）引起的多普勒频移来测量移动 运动。 对于每个测量轴（X，Y，Z），来自二极管激光器（3,5）的辐射会聚在物体（15）所移动的窗口（12）上。 由于运动而频率被多普勒频移的物体散射的部分辐射再次进入激光腔（20）并导致腔体特性的变化。 通过例如通过光电二极管测量这种变化，获得关于移动的信息。 由于输入设备小巧便宜，可用于多种不同的消费设备。
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