RU94026273A - LASER DEVICE FOR MEASURING DISTANCE - Google Patents

LASER DEVICE FOR MEASURING DISTANCE

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Publication number
RU94026273A
RU94026273A RU94026273/09A RU94026273A RU94026273A RU 94026273 A RU94026273 A RU 94026273A RU 94026273/09 A RU94026273/09 A RU 94026273/09A RU 94026273 A RU94026273 A RU 94026273A RU 94026273 A RU94026273 A RU 94026273A
Authority
RU
Russia
Prior art keywords
laser
output light
facet
target
distance
Prior art date
Application number
RU94026273/09A
Other languages
Russian (ru)
Other versions
RU2111510C1 (en
Inventor
А.Мэйнзер Ричард
И.Зепке Брюс
Original Assignee
Юнайтед Текнолоджиз Корпорэйшн
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/800,335 external-priority patent/US5267016A/en
Application filed by Юнайтед Текнолоджиз Корпорэйшн filed Critical Юнайтед Текнолоджиз Корпорэйшн
Publication of RU94026273A publication Critical patent/RU94026273A/en
Application granted granted Critical
Publication of RU2111510C1 publication Critical patent/RU2111510C1/en

Links

Claims (7)

1. Лазерное устройство для измерения расстояния, включающее лазер, генерирующий сигнал переменной оптической рабочей частотой и имеющий первую фасетку и вторую фасетку для излучения первого выходного света из первой фасетки по направлению к цели и второго выходного света из второй фасетки таким образом, что первый выходной свет падает на цель и имеет длину волны, позволяющую ему рассеиваться целью назад к лазеру, средство возбуждения лазера, генерирующего переменный сигнал возбуждения для изменения оптической рабочей частоты лазера, отличающееся тем, что сигнал возбуждения лазера имеет заранее определенную установку частоты периодической развертки для минимизирования помех в виде спеклов, причем второй выходной свет имеет интенсивность, связанную с расстоянием от передней фасетки до цели, обусловленную когорентной интерференцией внутри лазера между рассеянным светом от цели и светом внутри лазера, устройство также содержит средство оптического детектирования, чувствительное ко второму выходному свету и генерирующее сигнал обратной связи, свидетельствующий об интенсивности второго света, и средство измерения расстояния, связанное со средством оптического детектирования и генерирующее сигнал, исключительно пропорциональный расстоянию от первой фасетки до цели.1. A laser device for measuring distance, including a laser generating a signal with a variable optical operating frequency and having a first facet and a second facet for emitting the first output light from the first facet towards the target and the second output light from the second facet so that the first output light falls on the target and has a wavelength that allows it to be scattered by the target back to the laser, the means of excitation of the laser generating an alternating excitation signal to change the optical working frequency of the laser, from characterized in that the laser excitation signal has a predetermined setting of the periodic scanning frequency to minimize speckle interference, the second output light having an intensity related to the distance from the front facet to the target due to coherent interference inside the laser between the scattered light from the target and the light inside laser, the device also contains means of optical detection, sensitive to the second output light and generating a feedback signal indicating the intensity of the second light, and a distance measuring device associated with the optical detection means and generating a signal exclusively proportional to the distance from the first facet to the target. 2. Устройство по п. 1, отличающееся тем, что сигнал возбуждения лазера включает последовательность одиноких пилообразных участков, перемежающихся опущенными вниз плоскими участками наклона. 2. The device according to p. 1, characterized in that the laser excitation signal includes a sequence of lone sawtooth sections, alternating with downward flat slope sections. 3. Устройство по п. 1, отличающееся тем, что средство измерения расстояния дополнительно включает средство гашения участков сигнала обратной связи, совпадающего с разрывами непрерывности сигнала возбуждения лазера. 3. The device according to claim 1, characterized in that the distance measuring means further includes means for suppressing portions of the feedback signal that coincides with discontinuities in the continuity of the laser excitation signal. 4. Устройство по п. 1, отличающееся тем, что средство измерения расстояния дополнительно включает средство гашения участка сигнала обратной связи, совпадающего с разрывами непрерывности, вызываемыми обработкой сигнала обратной связи. 4. The device according to claim 1, characterized in that the distance measuring means further includes means for suppressing a portion of the feedback signal coinciding with the continuity gaps caused by the processing of the feedback signal. 5. Устройство по п. 1, отличающееся тем, что средство измерений расстояния дополнительно включает средство для подсчета импульсов сигнала обратной связи. 5. The device according to claim 1, characterized in that the distance measuring means further includes means for counting the pulses of the feedback signal. 6. Устройство по п. 1, отличающееся тем, что средство измерения расстояния дополнительно включает расположенное на пути первого выходного света средство фокусирования первого выходного света на заранее установленном расстоянии от средства фокусирования. 6. The device according to claim 1, characterized in that the distance measuring means further includes means for focusing the first output light located on the path of the first output light at a predetermined distance from the focusing means. 7. Устройство по п. 1, отличающееся тем, что лазер включает лазерный диод. 7. The device according to claim 1, characterized in that the laser includes a laser diode.
RU94026273A 1991-11-27 1992-11-19 Laser device to measure distances RU2111510C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/800,335 US5267016A (en) 1991-11-27 1991-11-27 Laser diode distance measurement
US800,335 1991-11-27
PCT/US1992/009844 WO1993011448A1 (en) 1991-11-27 1992-11-19 Laser diode distance measurement

Publications (2)

Publication Number Publication Date
RU94026273A true RU94026273A (en) 1997-12-20
RU2111510C1 RU2111510C1 (en) 1998-05-20

Family

ID=25178138

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94026273A RU2111510C1 (en) 1991-11-27 1992-11-19 Laser device to measure distances

Country Status (8)

Country Link
US (1) US5267016A (en)
EP (1) EP0614536B1 (en)
JP (1) JPH07501401A (en)
CA (1) CA2121902A1 (en)
DE (2) DE69226279T2 (en)
ES (1) ES2072241T3 (en)
RU (1) RU2111510C1 (en)
WO (1) WO1993011448A1 (en)

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