| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflective screen capable of improving contrast even when a distance from an image source is short, and to provide a reflective projection system having the reflective screen. <P>SOLUTION: The reflective screen comprises: from the side where image light is projected, an optical functional layer; a Fresnel lens layer; and a light-reflecting layer formed on a lens face of the Fresnel lens layer. The optical functional layer comprises: light-transmitting portions arranged in parallel to one another to transmit light; and light-absorbing portions formed between the light-transmitting portions to absorb light, in which the refractive index of the light-transmitting portion is equal to or lower than the refractive index of the light-absorbing portion. On a cross-sectional view in a layer thickness direction of the screen in such a posture that the arrangement direction of the light-absorbing portions is aligned to the vertical direction, one of an upper interface and a lower interface of the light-absorbing portion with the light-transmitting portion is formed based on an incident direction of image light that is estimated to enter the optical functional layer; and the other interface is formed based on an incident direction of light, except for the image light, estimated to enter the optical functional layer. The reflective projection system includes the reflective screen. <P>COPYRIGHT: (C)2013,JPO&INPIT |
