| 摘要 |
PURPOSE:To improve the quality of an image/picked up by constituting a translucent mirror by providing an interval between minute translucent mirrors, and preventing the change of the optical path of reflected light caused by the very small half mirrors neighboring each other. CONSTITUTION:The interval W is provided between the minute translucent mirrors 5. When this interval W is determined properly, a part to be shadow for an image pickup device 2 by the neighboring minute translucent mirrors 5 is eliminated, and the change of the optical path of the reflected light can be prevented. Namely, by giving some inclination phi to a side wall 4, the interval W between the minute translucent mirrors 5 is provided. For instance, when the inclination phi of the side wall 4 is set for the inclination theta of the minute translucent mirror 5 so as to satisfy relation phi=2theta, an image reflected by the minute translucent mirror 5 comes to be image-picked up by the image pickup device 2 without being reflected by or passing through the side wall 4. Consequently, since no change is caused in the optical path of the reflected light, the deterioration of the quality of the image-picked up picture can be prevented. |
