Reflection-type transparent screen, and image display system

A reflective transparent screen comprising:

• a first transparent layer having an irregular surface,
• a reflective layer formed on the irregular surface, and
• a second transparent layer formed on the irregular surface on which the reflective layer is formed, so as to fill irregularities,
• the irregular surface of the first transparent layer having a slant angle in a first direction being within a range of from −44° to +44°, and a slant angle in a second direction perpendicular to the first direction being within a range of from −44° to +44°,
• the irregular surface being formed by random arrangement of unit lenses differing in shape in the first direction and in the second direction,
• the unit lenses being arranged so that the average interval is from 10 μm to 500 μm, and
• the irregular surface including a region in which the slant angles in the first direction and in the second direction respectively change stepwise or continuously.