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1. US20200041112 - Laser projection system

Office
United States of America
Application Number 16541957
Application Date 15.08.2019
Publication Number 20200041112
Publication Date 06.02.2020
Grant Number 11397000
Grant Date 26.07.2022
Publication Kind B2
IPC
F21V 23/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
23Arrangement of electric circuit elements in or on lighting devices
04the elements being switches
G01J 1/42
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
42using electric radiation detectors
G01J 1/26
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
10by comparison with reference light or electric value
20intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle
22using a variable element in the light-path, e.g. filter, polarising means
24using electric radiation detectors
26adapted for automatic variation of the measured or reference value
G01J 1/24
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
10by comparison with reference light or electric value
20intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle
22using a variable element in the light-path, e.g. filter, polarising means
24using electric radiation detectors
F21V 21/15
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
21Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
14Adjustable mountings
15specially adapted for power operation, e.g. by remote control
F21V 25/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
25Safety devices structurally associated with lighting devices
CPC
F21V 21/15
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
21Supporting, suspending, or attaching arrangements for lighting devices
14Adjustable mountings
15specially adapted for power operation, e.g. by remote control
F21V 23/0457
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
23Arrangement of electric circuit elements in or on lighting devices
04the elements being switches
0442activated by means of a sensor, e.g. motion or photodetectors
0457the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
F21V 25/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
25Safety devices structurally associated with lighting devices
G01J 1/24
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
10by comparison with reference light or electric value ; provisionally void
20intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
22using a variable element in the light-path, e.g. filter, polarising means
24using electric radiation detectors
G01J 1/26
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
10by comparison with reference light or electric value ; provisionally void
20intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
22using a variable element in the light-path, e.g. filter, polarising means
24using electric radiation detectors
26adapted for automatic variation of the measured or reference value
G01J 1/4257
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
42using electric radiation detectors
4257applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
Applicants LIGHTWAVE INTERNATIONAL, INC.
Inventors George Dodworth
Agents Michael G. Monyok
Title
(EN) Laser projection system
Abstract
(EN)

A laser projection system having built-in safety systems is disclosed. Further disclosed is a method of operating a laser projection system such that safe operation is a factor only of meeting a threshold distance between the laser unit and an audience member. To accomplish safe operation at the threshold distance, the laser projection system is pre-calibrated to operate below maximum permitted exposure levels at the threshold distance. In this manner of operation, laser lighting can be accomplished by non-laser professionals without the complexity, external sensors, and need for calibration at the venue.


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