Abstract: An ambient image projection device includes a light source assembly, a first projection mechanism and a second projection mechanism provided side by side; the first projection mechanism includes a display and a first optical module, a content played on the display is guided by the first optical module to form a dynamic image to be projected in space; the second projection mechanism includes an interference lens and a second optical module, light emitted from the light source assembly is guided by the second optical module to pass through the interference lens and forms an interference pattern to be projected in space; the interference pattern and the dynamic image overlap at least partially with each other in the space. The device provides more stereoscopic dynamic visual experience by projecting images via a display.

Abstract: An interference lens and a projection ambient lamp are provided. The interference lens includes: an interference sheet with a first surface and a second surface opposite to the first surface, the first surface being a rough surface; and a reflective film provided at the interference sheet; wherein light is reflected by the reflective film to form an interference pattern. The projection ambient lamp includes the foregoing interference lens, a light source and a focusing lens; light emitted from the light source passes through the interference lens and is reflected by the reflective film to form an interference pattern, which is focused by the focusing lens and projected on a medium. The present disclosure realizes simplification of the structure by providing a reflective film at the interference lens, hence utilization of light energy is higher, power consumption is lower, manufacturing cost is lower, and projection effect is better.

Abstract: An interference lens and a projection ambient lamp are provided. The interference lens includes: an interference sheet with a first surface and a second surface opposite to the first surface, the first surface being a rough surface; and a reflective film provided at the interference sheet; wherein light is reflected by the reflective film to form an interference pattern. The projection ambient lamp includes the foregoing interference lens, a light source and a focusing lens; light emitted from the light source passes through the interference lens and is reflected by the reflective film to form an interference pattern, which is focused by the focusing lens and projected on a medium. The present disclosure realizes simplification of the structure by providing a reflective film at the interference lens, hence utilization of light energy is higher, power consumption is lower, manufacturing cost is lower, and projection effect is better.