PURPOSE: To secure the superior rearward viewfield by allowing the light transmitted toward a hologram installed onto a rear glass for a vehicle to pass through the rear glass and to be directed rearward and maintaining the transparency of the rear glass when light is not transmitted to the hologram.

CONSTITUTION: A hologram 4 is arranged on a rear glass on a car body 2. Further, a light source 3 which transmits light towards the hologram 4 is arranged under a rear glass behind a rear seat in the car room. The light transmitted toward the hologram 4 from the light source 3 passes through the rear glass and is distinctly recognized by the driver 1' on a succeeding vehicle. Since, at this time, the rear glass having the hologram 4 installed maintains the necessary transparency, the rearward viewfield of a driver 1 on the vehicle can be maintained in the superior state. Further, the rear glass has a hologram member 6 between a pair of organic adhesive film layers 7 and 7', and a pair of glass palates 8 and 8' are arranged on the both sides.