Title:
PROJECTION APPARATUS AND PROJECTION CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/184927
Kind Code:
A1
Abstract:
A projection apparatus (100) and a projection control method therefor. The projection apparatus (100) comprises a light source device (10), a spatial light modulator (30) and a control device (60). The light source device (10) is used for illuminating a predetermined area (A). The light source device (10) comprises a moving mechanism (12) and a light source module (14). The moving mechanism (12) comprises a driving member (121) and a rotating member (123) connected to the driving member (121). The rotating member (123) can rotate around a central shaft (O) under the driving of the driving member (121). The light source module (14) is connected to the rotating member (123), and the light source module (14) comprises a plurality of light source groups (141). The plurality of light source groups (141) are sequentially arranged outwards in a direction away from the central shaft (O). Each light source group (141) comprises at least one light-emitting unit (1411), and each light-emitting unit (1411) can individually control light emission. A movement trajectory of the light source module (14) when moving under the driving of the rotating member (123) covers the predetermined area (A). The spatial light modulator (30) is arranged on a light path of light source light and is used for modulating the light source light, so as to obtain a modulated image. The projection apparatus (100) can achieve high dynamic range (HDR) brightness modulation at a low cost.
Inventors:
LI SHIJIE (CN)
TANG XIAOFENG (CN)
WU CHAO (CN)
LI YI (CN)
TANG XIAOFENG (CN)
WU CHAO (CN)
LI YI (CN)
Application Number:
PCT/CN2020/142158
Publication Date:
September 23, 2021
Filing Date:
December 31, 2020
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN103293838A | 2013-09-11 | |||
| CN105652565A | 2016-06-08 | |||
| CN105812760A | 2016-07-27 | |||
| CN207842789U | 2018-09-11 | |||
| CN102022638A | 2011-04-20 | |||
| JP2004045718A | 2004-02-12 |
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