FLOATING IMAGE DISPLAY DEVICE

Organization Name

Industrial Technology Research Institute

Inventor(s)

Hung Tsou of Zhubei City (TW)

Chia-Ping Lin of Taipei City (TW)

Yi-Hsiang Huang of Changhua City (TW)

FLOATING IMAGE DISPLAY DEVICE

This abstract first appeared for US patent application 18382472 titled 'FLOATING IMAGE DISPLAY DEVICE

Original Abstract Submitted

A floating image display device includes a light source module, a periodical optical structure and a blocking layer. The light source module generates light. The periodical optical structure includes lenses, and the light passes through the periodical optical structure and forms a floating image. The blocking layer is configured to block or absorb a part of the light, and the blocking layer is between any adjacent two lenses. A beam angle of another part of the light not blocked or absorbed by the blocking layer ranges between angles α and β, and the following conditions are satisfied: α=tan(d/h); and β=2 tan(d/2h), wherein α is an off-axis viewing angle, β is an on-axis viewing angle, d is a maximum width of an aperture corresponding to each lens, and h is a distance from the light source module to the aperture.