LIGHT METER

Hand-held photographic light meters which may be of either the incident light or the spot variety are equipped with means of transmitting the light intensity measured to a suitably equipped automatic camera by means of a modulated beam of infra-red radiation. In this way the camera is set accurately...

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1. Verfasser:	DR JOHN MICHAEL BOWSHER
Format:	Patent
Sprache:	eng
Schlagworte:	COLORIMETRY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY TESTING
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creator	DR JOHN MICHAEL BOWSHER
description	Hand-held photographic light meters which may be of either the incident light or the spot variety are equipped with means of transmitting the light intensity measured to a suitably equipped automatic camera by means of a modulated beam of infra-red radiation. In this way the camera is set accurately regardless of the reflectance of the subject. Continuous or flash or a mixture of the two lights may be used. The camera has to be modified to receive the infra-red radiation in Type A of the invention while in Type B a special receiving unit which mounts on the hot-shoe is used to give a less flexible performance. More than one camera may be set simultaneously and most of the features of the automatic camera are retained.
format	Patent
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In this way the camera is set accurately regardless of the reflectance of the subject. Continuous or flash or a mixture of the two lights may be used. The camera has to be modified to receive the infra-red radiation in Type A of the invention while in Type B a special receiving unit which mounts on the hot-shoe is used to give a less flexible performance. More than one camera may be set simultaneously and most of the features of the automatic camera are retained.</description><edition>4</edition><language>eng</language><subject>COLORIMETRY ; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT ; MEASURING ; PHYSICS ; RADIATION PYROMETRY ; TESTING</subject><creationdate>1985</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19850313&DB=EPODOC&CC=GB&NR=2144864A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19850313&DB=EPODOC&CC=GB&NR=2144864A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DR JOHN MICHAEL BOWSHER</creatorcontrib><title>LIGHT METER</title><description>Hand-held photographic light meters which may be of either the incident light or the spot variety are equipped with means of transmitting the light intensity measured to a suitably equipped automatic camera by means of a modulated beam of infra-red radiation. In this way the camera is set accurately regardless of the reflectance of the subject. Continuous or flash or a mixture of the two lights may be used. The camera has to be modified to receive the infra-red radiation in Type A of the invention while in Type B a special receiving unit which mounts on the hot-shoe is used to give a less flexible performance. More than one camera may be set simultaneously and most of the features of the automatic camera are retained.</description><subject>COLORIMETRY</subject><subject>MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>RADIATION PYROMETRY</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1985</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD28XT3CFHwdQ1xDeJhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfHuTkaGJiYWZiaOxoRVAAACsRst</recordid><startdate>19850313</startdate><enddate>19850313</enddate><creator>DR JOHN MICHAEL BOWSHER</creator><scope>EVB</scope></search><sort><creationdate>19850313</creationdate><title>LIGHT METER</title><author>DR JOHN MICHAEL BOWSHER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB2144864A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1985</creationdate><topic>COLORIMETRY</topic><topic>MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>RADIATION PYROMETRY</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>DR JOHN MICHAEL BOWSHER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>DR JOHN MICHAEL BOWSHER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>LIGHT METER</title><date>1985-03-13</date><risdate>1985</risdate><abstract>Hand-held photographic light meters which may be of either the incident light or the spot variety are equipped with means of transmitting the light intensity measured to a suitably equipped automatic camera by means of a modulated beam of infra-red radiation. In this way the camera is set accurately regardless of the reflectance of the subject. Continuous or flash or a mixture of the two lights may be used. The camera has to be modified to receive the infra-red radiation in Type A of the invention while in Type B a special receiving unit which mounts on the hot-shoe is used to give a less flexible performance. More than one camera may be set simultaneously and most of the features of the automatic camera are retained.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record>
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language	eng
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subjects	COLORIMETRY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY TESTING
title	LIGHT METER
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