公开(公告)号：EP0358368A1

公开(公告)日：1990-03-14

申请号：EP89308457.4

申请日：1989-08-21

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lynn ,  Sobottke, Mark Durward ,  Rando, Joseph Francis

IPC: G01C15/00 ,  G01S17/10

CPC classification number: G01C15/004 ,  G01C15/002 ,  G01S17/105

Abstract: A laser beam three dimensional position measurement system (10) includes a laser transmitter (12) mounted at a stationary reference position at a work site (16) and a receiver (14) mounted on a mobile machine (20) at the site. The transmitter (12) produces a laser reference plane by sweeping a laser beam about the transmitter. The receiver (14) includes a retroreflector (26) which intercepts and reflects laser energy back to the transmitter (12) when the laser beam sweeps past the retroreflector. The system also includes at the transmitter a circuit composed of a photodetector, timer, clock and counter. The photodetector senses laser energy reflected back to the transmitter (12) from the retroreflector (26). The timer modulates the laser beam produced by the transmitter in response to detection of the beam. The counter is connected to the clock and timer, and is enabled by the timer to start counting electrical pulses received from the clock when the beam is modulated. The counter is disabled to stop counting electrical pulses when the modulation is detected. The number of pulses counted by the counter is indicative of the range of the receiver (14) from the transmitter (12). The orientation of the beam relative to a fixed reference axis (X) at the time reflected laser energy is detected defines the direction of the receiver (14) relative to the transmitter (12).

Abstract translation: 激光束三维位置测量系统（10）包括安装在工地（16）的固定基准位置处的激光发射器（12）和安装在现场的移动机器（20）上的接收器（14）。 发射器（12）通过扫描发射器周围的激光束产生激光参考平面。 接收器（14）包括后向反射器（26），其在激光束扫过后向反射器时截取并将激光能量反射回发射器（12）。 该系统还在发射器处包括由光电检测器，定时器，时钟和计数器组成的电路。 光电检测器感测从后向反射器（26）反射回发射器（12）的激光能量。 定时器响应于光束的检测来调制由发射器产生的激光束。 计数器连接到时钟和定时器，并由定时器使能，以便在调制光束时开始计数从时钟接收的电脉冲。 当检测到调制时，计数器被禁止停止计数电脉冲。 由计数器计数的脉冲数指示来自发射器（12）的接收器（14）的范围。 检测反射激光能量时光束相对于固定参考轴（X）的取向定义了接收器（14）相对于发射器（12）的方向。

公开(公告)号：EP0358368B1

公开(公告)日：1994-04-13

申请号：EP89308457.4

申请日：1989-08-21

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lynn ,  Sobottke, Mark Durward ,  Rando, Joseph Francis

IPC: G01C15/00 ,  G01S17/10

CPC classification number: G01C15/004 ,  G01C15/002 ,  G01S17/105

公开(公告)号：EP0388559A3

公开(公告)日：1991-01-09

申请号：EP89313056.7

申请日：1989-12-13

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lunn ,  Church, Gerald Henry ,  Sobottke, Mark Durward ,  Zalusky, James Thomas

IPC: G01B11/26 ,  G01S3/78

CPC classification number: G01S3/782 ,  G01B11/26 ,  G01C15/002

Abstract: Apparatus (100) operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane (108) relative to level comprises a photodetector array (102) for sensing the light and a level mirror (104) preferably comprising a pool of mercury. Optics (112, 114, 118, 120) are provided for transmitting the light to the photodetector array in alignment with the angle of incidence of the light (aligned light) and also after the light has been reflected from the mercury pool (reflected light). A shutter (106) is provided for separating aligned light from reflected light such that distinct signals representative of the two are generated by the photodetector array. The distinct signals are processed by up-counting and down-counting a counter circuit to determine the average centers of light spots representative of the aligned light and the reflected light and the distance between those average centers which is representative of the deviation of the light beam or plane (108) from level.

公开(公告)号：EP0358410A2

公开(公告)日：1990-03-14

申请号：EP89308841.9

申请日：1989-08-31

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Hawthorn, Pliny Scott ,  Sobottke, Mark Durward

IPC: H01S3/05 ,  H01S3/109 ,  H01S3/094

CPC classification number: H01S3/025 ,  H01S3/0604 ,  H01S3/0627 ,  H01S3/09415 ,  H01S3/109

Abstract: A compact, laser diode pumped, high efficiency, solid-state laser comprises an output coupler mirror (182) forming a front end of a laser cavity. A back end of the laser cavity is formed by a rear mirror (172) through which emissions from a laser diode (162) pass for pumping a laser chip (174) of stoichiometric lasing material. A frequency doubler chip (176) is positioned immediately adjacent the laser chip to double the frequency of light generated by the laser chip and thereby halve its wavelength. The laser chip is bonded to the frequency doubler chip by coupling material having a refractive index matched to the chips to nearly eliminate reflections at the bonded chip surfaces. Such bonding increases the effective Q of the laser cavity which receives the bonded combination of the laser chip and the doubler chip at a beam waist defined within the laser cavity by means of beam shaping with the laser chip being positioned to receive pumping energy from the laser diode through the rear mirror of the laser cavity. Spiking or peaking of the output laser light is effected by gain switching, phase modulation or by imparting vibratory motion to the bonded combination of the laser chip and the frequency doubler chip.

Abstract translation: 泵浦的紧凑型激光二极管，高效率的固体激光器包括形成激光腔的前端的输出耦合镜（182）。 激光腔的后端由后反射镜（172）形成，后反射镜（172）通过激光二极管（162）的发射通过用于泵送化学计量激光材料的激光芯片（174）。 倍频器芯片（176）紧邻激光芯片定位，使激光芯片产生的光的频率加倍，从而将其波长减半。 激光芯片通过将具有与芯片匹配的折射率的材料耦合到倍频器芯片上，几乎消除了接合的芯片表面的反射。 这种接合增加了激光腔的有效Q，该激光腔通过光束成形而接收激光器芯片和倍频器芯片在激光腔内限定的束腰处的结合组合，激光器芯片定位成从激光器接收泵浦能量 二极管通过后视镜的激光腔。 输出激光的尖峰或峰值通过增益切换，相位调制或通过向激光芯片和倍频器芯片的结合组合施加振动运动来实现。

公开(公告)号：EP0388559A2

公开(公告)日：1990-09-26

申请号：EP89313056.7

申请日：1989-12-13

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lunn ,  Church, Gerald Henry ,  Sobottke, Mark Durward ,  Zalusky, James Thomas

IPC: G01B11/26 ,  G01S3/78

CPC classification number: G01S3/782 ,  G01B11/26 ,  G01C15/002

Abstract: Apparatus (100) operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane (108) relative to level comprises a photodetector array (102) for sensing the light and a level mirror (104) preferably comprising a pool of mercury. Optics (112, 114, 118, 120) are provided for transmitting the light to the photodetector array in alignment with the angle of incidence of the light (aligned light) and also after the light has been reflected from the mercury pool (reflected light). A shutter (106) is provided for separating aligned light from reflected light such that distinct signals representative of the two are generated by the photodetector array. The distinct signals are processed by up-counting and down-counting a counter circuit to determine the average centers of light spots representative of the aligned light and the reflected light and the distance between those average centers which is representative of the deviation of the light beam or plane (108) from level.

Abstract translation: 根据本发明的方法可操作的用于测量光束或平面（108）相对于水平面的入射角的装置（100）包括用于感测光的光电检测器阵列（102）和水平反射镜（104） 优选地包括一个汞池。 光学元件（112,114,118,120）被提供用于将光传送到与光（对准的光）的入射角对准的光检测器阵列，并且在光从汞池（反射光）反射之后， 。 提供了一个快门（106），用于将对准的光与反射光分离，使得表示两者的不同信号由光电检测器阵列产生。 通过对计数器电路进行递增计数和递减计数来处理不同的信号，以确定表示对准的光和反射光的光点的平均中心以及代表光束偏离的那些平均中心之间的距离 或平面（108）。

公开(公告)号：EP0358410A3

公开(公告)日：1990-08-08

申请号：EP89308841.9

申请日：1989-08-31

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Hawthorn, Pliny Scott ,  Sobottke, Mark Durward

IPC: H01S3/05 ,  H01S3/109 ,  H01S3/094

CPC classification number: H01S3/025 ,  H01S3/0604 ,  H01S3/0627 ,  H01S3/09415 ,  H01S3/109

Abstract: A compact, laser diode pumped, high efficiency, solid-state laser comprises an output coupler mirror (182) forming a front end of a laser cavity. A back end of the laser cavity is formed by a rear mirror (172) through which emissions from a laser diode (162) pass for pumping a laser chip (174) of stoichiometric lasing material. A frequency doubler chip (176) is positioned immediately adjacent the laser chip to double the frequency of light generated by the laser chip and thereby halve its wavelength. The laser chip is bonded to the frequency doubler chip by coupling material having a refractive index matched to the chips to nearly eliminate reflections at the bonded chip surfaces. Such bonding increases the effective Q of the laser cavity which receives the bonded combination of the laser chip and the doubler chip at a beam waist defined within the laser cavity by means of beam shaping with the laser chip being positioned to receive pumping energy from the laser diode through the rear mirror of the laser cavity. Spiking or peaking of the output laser light is effected by gain switching, phase modulation or by imparting vibratory motion to the bonded combination of the laser chip and the frequency doubler chip.