PROBLEM TO BE SOLVED: To secure a desired angle of field and secure the brightness of an image over the whole angle of field.SOLUTION: A screen (screens 30a to 30c in embodiments 1 to 3) includes a first optical surface which includes a plurality of light condensing surfaces (a microlens surface and a micromirror surface) and a second optical surface on which light through the first optical surface is made incident. The second optical surface includes a plurality of refraction surfaces (prism surfaces) which correspond to the plurality of light condensing surfaces and refract a part (light part) of the light through the corresponding light condensing surface. In this case, the desired angle of field can be secured and the brightness of the image can be secured over the whole angle of field.SELECTED DRAWING: Figure 10
【課題】 所望の視野角を確保でき、かつ該視野角全域で画像の明るさを確保できる。【解決手段】 スクリーン(実施例1〜3のスクリーン30a〜30c)は、複数の集光面(マイクロレンズ面やマイクロミラー面)を含む第1の光学面と、該第1の光学面を介した光が入射される第2の光学面と、を備え、該第2の光学面は、複数の集光面に対応し、対応する集光面を介した、光の一部(光部分)を屈折させる複数の屈折面(プリズム面)を含む。この場合、所望の視野角を確保でき、かつ該視野角全域で画像の明るさを確保できる【選択図】図10
SCREEN, IMAGE DISPLAY DEVICE, AND OBJECT DEVICE
スクリーン、画像表示装置及び物体装置
2017-06-01
Patent
Electronic Resource
Japanese
IPC: | G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen |
IMAGE DISPLAY DEVICE, OBJECT DEVICE, TRANSMISSION SCREEN, AND SCREEN
European Patent Office | 2016
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