DISPLAY DEVICE AND PROJECTION SYSTEM
To provide a display device capable of achieving nonlinear gradation expression (gamma characteristics/gamma curves) even when an optical modulator is an on/off binary display device.SOLUTION: A display device includes: a first optical system for generating illumination light whose light emission lu...
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| creator | AKIBA AKIRA CHIBA ATSUHIRO NISHIIKE AKIHITO TAJIRI SHINICHIRO |
| description | To provide a display device capable of achieving nonlinear gradation expression (gamma characteristics/gamma curves) even when an optical modulator is an on/off binary display device.SOLUTION: A display device includes: a first optical system for generating illumination light whose light emission luminance is variable; a photochromic section which transmits the illumination light from the first optical system and which can vary its transmissivity; a second optical system which includes an optical modulator and which optically modulates the illumination light streaming from the first optical system via the photochromic section by using a pulse width modulation technique; and a control section for controlling the light emission luminance of the illumination light from the first optical system and the transmissivity of the photochromic section in an arbitrary combination.SELECTED DRAWING: Figure 4
【課題】光変調素子がオン／オフ２値表示デバイスの場合であっても、非線形な階調表現（ガンマ特性／ガンマカーブ）を実現することができる表示装置を提供する。【解決手段】本開示の表示装置は、発光輝度が可変な照明光を生成する第１の光学系、第１の光学系からの照明光を透過する、透過率が可変な調光部、光変調素子を含み、調光部を経た第１の光学系からの照明光を、パルス幅変調技術を使って光変調する第２の光学系、及び、第１の光学系からの照明光の発光輝度と調光部の透過率とを、任意の組み合わせで制御する制御部、を備える。【選択図】 図４ |
| format | Patent |
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【課題】光変調素子がオン／オフ２値表示デバイスの場合であっても、非線形な階調表現（ガンマ特性／ガンマカーブ）を実現することができる表示装置を提供する。【解決手段】本開示の表示装置は、発光輝度が可変な照明光を生成する第１の光学系、第１の光学系からの照明光を透過する、透過率が可変な調光部、光変調素子を含み、調光部を経た第１の光学系からの照明光を、パルス幅変調技術を使って光変調する第２の光学系、及び、第１の光学系からの照明光の発光輝度と調光部の透過率とを、任意の組み合わせで制御する制御部、を備える。【選択図】 図４</description><language>eng ; jpn</language><subject>ACCESSORIES THEREFOR ; ADVERTISING ; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES ; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION ; CINEMATOGRAPHY ; CRYPTOGRAPHY ; DISPLAY ; EDUCATION ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; ELECTROGRAPHY ; HOLOGRAPHY ; PHOTOGRAPHY ; PHYSICS ; PICTORIAL COMMUNICATION, e.g. TELEVISION ; SEALS</subject><creationdate>2021</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=20210212&DB=EPODOC&CC=JP&NR=2021015139A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210212&DB=EPODOC&CC=JP&NR=2021015139A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AKIBA AKIRA</creatorcontrib><creatorcontrib>CHIBA ATSUHIRO</creatorcontrib><creatorcontrib>NISHIIKE AKIHITO</creatorcontrib><creatorcontrib>TAJIRI SHINICHIRO</creatorcontrib><title>DISPLAY DEVICE AND PROJECTION SYSTEM</title><description>To provide a display device capable of achieving nonlinear gradation expression (gamma characteristics/gamma curves) even when an optical modulator is an on/off binary display device.SOLUTION: A display device includes: a first optical system for generating illumination light whose light emission luminance is variable; a photochromic section which transmits the illumination light from the first optical system and which can vary its transmissivity; a second optical system which includes an optical modulator and which optically modulates the illumination light streaming from the first optical system via the photochromic section by using a pulse width modulation technique; and a control section for controlling the light emission luminance of the illumination light from the first optical system and the transmissivity of the photochromic section in an arbitrary combination.SELECTED DRAWING: Figure 4
【課題】光変調素子がオン／オフ２値表示デバイスの場合であっても、非線形な階調表現（ガンマ特性／ガンマカーブ）を実現することができる表示装置を提供する。【解決手段】本開示の表示装置は、発光輝度が可変な照明光を生成する第１の光学系、第１の光学系からの照明光を透過する、透過率が可変な調光部、光変調素子を含み、調光部を経た第１の光学系からの照明光を、パルス幅変調技術を使って光変調する第２の光学系、及び、第１の光学系からの照明光の発光輝度と調光部の透過率とを、任意の組み合わせで制御する制御部、を備える。【選択図】 図４</description><subject>ACCESSORIES THEREFOR</subject><subject>ADVERTISING</subject><subject>APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES</subject><subject>APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM</subject><subject>ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION</subject><subject>CINEMATOGRAPHY</subject><subject>CRYPTOGRAPHY</subject><subject>DISPLAY</subject><subject>EDUCATION</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>ELECTROGRAPHY</subject><subject>HOLOGRAPHY</subject><subject>PHOTOGRAPHY</subject><subject>PHYSICS</subject><subject>PICTORIAL COMMUNICATION, e.g. TELEVISION</subject><subject>SEALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFBx8QwO8HGMVHBxDfN0dlVw9HNRCAjy93J1DvH091MIjgwOcfXlYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBkaGBoamhsaWjsZEKQIAwakjag</recordid><startdate>20210212</startdate><enddate>20210212</enddate><creator>AKIBA AKIRA</creator><creator>CHIBA ATSUHIRO</creator><creator>NISHIIKE AKIHITO</creator><creator>TAJIRI SHINICHIRO</creator><scope>EVB</scope></search><sort><creationdate>20210212</creationdate><title>DISPLAY DEVICE AND PROJECTION SYSTEM</title><author>AKIBA AKIRA ; CHIBA ATSUHIRO ; NISHIIKE AKIHITO ; TAJIRI SHINICHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2021015139A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2021</creationdate><topic>ACCESSORIES THEREFOR</topic><topic>ADVERTISING</topic><topic>APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES</topic><topic>APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM</topic><topic>ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION</topic><topic>CINEMATOGRAPHY</topic><topic>CRYPTOGRAPHY</topic><topic>DISPLAY</topic><topic>EDUCATION</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>ELECTROGRAPHY</topic><topic>HOLOGRAPHY</topic><topic>PHOTOGRAPHY</topic><topic>PHYSICS</topic><topic>PICTORIAL COMMUNICATION, e.g. TELEVISION</topic><topic>SEALS</topic><toplevel>online_resources</toplevel><creatorcontrib>AKIBA AKIRA</creatorcontrib><creatorcontrib>CHIBA ATSUHIRO</creatorcontrib><creatorcontrib>NISHIIKE AKIHITO</creatorcontrib><creatorcontrib>TAJIRI SHINICHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>AKIBA AKIRA</au><au>CHIBA ATSUHIRO</au><au>NISHIIKE AKIHITO</au><au>TAJIRI SHINICHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DISPLAY DEVICE AND PROJECTION SYSTEM</title><date>2021-02-12</date><risdate>2021</risdate><abstract>To provide a display device capable of achieving nonlinear gradation expression (gamma characteristics/gamma curves) even when an optical modulator is an on/off binary display device.SOLUTION: A display device includes: a first optical system for generating illumination light whose light emission luminance is variable; a photochromic section which transmits the illumination light from the first optical system and which can vary its transmissivity; a second optical system which includes an optical modulator and which optically modulates the illumination light streaming from the first optical system via the photochromic section by using a pulse width modulation technique; and a control section for controlling the light emission luminance of the illumination light from the first optical system and the transmissivity of the photochromic section in an arbitrary combination.SELECTED DRAWING: Figure 4
【課題】光変調素子がオン／オフ２値表示デバイスの場合であっても、非線形な階調表現（ガンマ特性／ガンマカーブ）を実現することができる表示装置を提供する。【解決手段】本開示の表示装置は、発光輝度が可変な照明光を生成する第１の光学系、第１の光学系からの照明光を透過する、透過率が可変な調光部、光変調素子を含み、調光部を経た第１の光学系からの照明光を、パルス幅変調技術を使って光変調する第２の光学系、及び、第１の光学系からの照明光の発光輝度と調光部の透過率とを、任意の組み合わせで制御する制御部、を備える。【選択図】 図４</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CINEMATOGRAPHY CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS |
| title | DISPLAY DEVICE AND PROJECTION SYSTEM |
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