To prevent the direct rays on the driver's eyes and a wash out phenomenon caused by the reflected light of the sun by non-positively reflecting the light from a display means to the reflection surface of the lower section of window glass by a non-positive reflecting hologram.

A non-positively reflecting reflection type hologram lens 1, which has an incident angle 18 and an emitting angle 19 that are different from each other, is provided in the lower portion of a windshield glass 2 of a car. In front of the lens 1, a light emitting display device 4 is attached. The glass 2 is a combined glass and a dark film 3 is sealded in its lower part. An opening 5 is provided on a dashboard 35 for an optical path. The luminous flux emitted from the device 4 is diffracted by the lens 1, reflected on a reflection surface 25 of the inner surface of the glass 2 and displayed for a driver 6 as a virtual image 7. In this case, the angles 18 and 19 are set by setting the incident angles of exposed light beams during a hologram exposure at prescribed angles respectively.