Optical sensor and electronic device
An object is sensed without a malfunction due to disturbance light. An optical sensor (101) of an aspect of the invention includes: a light-emitting element (LED) which turns off and turns on alternately for each one period; a light-receiving element (PD1) which receives reflection light and generat...
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| creator | Shirasaka Yasuyuki Shimizu Takayuki |
| description | An object is sensed without a malfunction due to disturbance light. An optical sensor (101) of an aspect of the invention includes: a light-emitting element (LED) which turns off and turns on alternately for each one period; a light-receiving element (PD1) which receives reflection light and generates a photocurrent; and an integrating circuit (11) which integrates the photocurrent in a positive direction in a period during which the light-emitting element turns on and integrates the photocurrent in a negative direction in a period during which the light-emitting element turns off. A sum of lengths of integration periods in a first period and a last period is same as a length of another integration period. |
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An optical sensor (101) of an aspect of the invention includes: a light-emitting element (LED) which turns off and turns on alternately for each one period; a light-receiving element (PD1) which receives reflection light and generates a photocurrent; and an integrating circuit (11) which integrates the photocurrent in a positive direction in a period during which the light-emitting element turns on and integrates the photocurrent in a negative direction in a period during which the light-emitting element turns off. A sum of lengths of integration periods in a first period and a last period is same as a length of another integration period.</description><language>eng</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; CALCULATING ; COMPUTING ; COUNTING ; DETECTING MASSES OR OBJECTS ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; ELECTRIC DIGITAL DATA PROCESSING ; GEOPHYSICS ; GRAVITATIONAL MEASUREMENTS ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>2017</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=20170411&DB=EPODOC&CC=US&NR=9618609B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170411&DB=EPODOC&CC=US&NR=9618609B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Shirasaka Yasuyuki</creatorcontrib><creatorcontrib>Shimizu Takayuki</creatorcontrib><title>Optical sensor and electronic device</title><description>An object is sensed without a malfunction due to disturbance light. An optical sensor (101) of an aspect of the invention includes: a light-emitting element (LED) which turns off and turns on alternately for each one period; a light-receiving element (PD1) which receives reflection light and generates a photocurrent; and an integrating circuit (11) which integrates the photocurrent in a positive direction in a period during which the light-emitting element turns on and integrates the photocurrent in a negative direction in a period during which the light-emitting element turns off. 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An optical sensor (101) of an aspect of the invention includes: a light-emitting element (LED) which turns off and turns on alternately for each one period; a light-receiving element (PD1) which receives reflection light and generates a photocurrent; and an integrating circuit (11) which integrates the photocurrent in a positive direction in a period during which the light-emitting element turns on and integrates the photocurrent in a negative direction in a period during which the light-emitting element turns off. A sum of lengths of integration periods in a first period and a last period is same as a length of another integration period.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETECTING MASSES OR OBJECTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC DIGITAL DATA PROCESSING GEOPHYSICS GRAVITATIONAL MEASUREMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING |
| title | Optical sensor and electronic device |
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