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1. (WO2017134781) PROJECTOR AND FOCUS ADJUSTMENT METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/134781 International Application No.: PCT/JP2016/053269
Publication Date: 10.08.2017 International Filing Date: 03.02.2016
IPC:
H04N 5/74 (2006.01) ,G02B 7/28 (2006.01) ,G03B 21/00 (2006.01) ,G03B 21/14 (2006.01) ,G03B 21/53 (2006.01) ,H04N 9/31 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
74
Projection arrangements for image reproduction, e.g. using eidophor
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
14
Details
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
14
Details
53
Means for automatic focusing, e.g. to compensate thermal effects
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
9
Details of colour television systems
12
Picture reproducers
31
Projection devices for colour picture display
Applicants:
NECディスプレイソリューションズ株式会社 NEC DISPLAY SOLUTIONS, LTD. [JP/JP]; 東京都港区三田一丁目4番28号 4-28, Mita 1-chome, Minato-ku, Tokyo 1080073, JP
Inventors:
藤野 茂 FUJINO, Shigeru; JP
Agent:
宮崎 昭夫 MIYAZAKI, Teruo; JP
Priority Data:
Title (EN) PROJECTOR AND FOCUS ADJUSTMENT METHOD
(FR) PROJECTEUR ET PROCÉDÉ DE RÉGLAGE DE MISE AU POINT
(JA) プロジェクター及びフォーカス調整方法
Abstract:
(EN) A projector having: a display unit (4) equipped with an image formation surface comprising multiple pixels; a projection lens (5) the focus of which can be adjusted, and which projects an image formed on the image formation surface onto a projection surface; a distortion correction processing unit (2) that, on the basis of distortion correction data (6a) for correcting distortion of the image projected onto the projection surface, generates a corrected image by enlarging and/or reducing an image indicated by an input video signal, and forms the corrected image on the image formation surface; and a control unit (1, 7, 8) that adjusts the focus of the projection lens (5) on the basis of the distortion correction data (6a) such that the focal range of the projection surface is wider.
(FR) L’invention concerne un projecteur comportant : une unité d’affichage (4) équipée d’une surface de formation d’image comprenant plusieurs pixels ; une lentille de projection (5) dont la mise au point peut être réglée, et qui projette une image formée sur la surface de formation d’image sur une surface de projection ; une unité de traitement de correction de distorsion (2) qui, sur la base des données de correction de distorsion (6a) pour la correction de la distortion de l’image projetée sur la surface de projection, génère une image corrigée par élargissement et/ou réduction d’une image indiquée par un signal vidéo d’entrée, et qui forme l’image corrigée sur la surface de formation d’image ; et une unité de commande (1, 7, 8) qui règle la mise au point de la lentille de projection (5) sur la base des données de correction de distorsion (6a) de sorte que la portée focale de la surface de projection est plus large.
(JA) プロジェクターは、複数の画素からなる画像形成面を備えた表示部(4)と、画像形成面に形成された画像を投射面に投射する、フォーカス調整が可能な投射レンズ(5)と、投射面に投射される画像の歪を補正する歪み補正データ(6a)に基づいて、入力された映像信号により示される画像を拡大および/又は縮小して補正画像を生成し、該補正画像を画像形成面に形成させる歪み補正処理部(2)と、歪み補正データ(6a)に基づいて、投射面上の合焦範囲が広くなるように投射レンズ(5)のフォーカス調整を行う制御部(1、7、8)と、を有する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US20190018220