Industrial Technology Research Institute

Chia-Ping Lin

Yi-Hsiang Huang

Chun-Ting Lin

Yu-Hsiang Liu

Han-Sung Chan

Hung Tsou

A floating image display device, configured to generate a floating image, is provided. The floating image display device includes an image module and at least one transflective optical element. The image module is configured to provide a first image. The transflective optical element includes a first reflective surface and a second reflective surface. The first image is located between the first reflective surface and the second reflective surface. Each of the first reflective surface and the second reflective surface includes a curved surface and has no opening on an optical axis thereof. The second reflective surface is a transflective surface. The first reflective surface and the second reflective surface are configured to re-converge rays from the first image to form a second image. The second image is a floating image.

Floating image display device

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.

A switchable floating image display device, including a light-emitting stack layer, a light-emitting pattern stack layer, a transparent barrier layer, an optical imaging module, and a power supply module, is provided. The light-emitting stack layer is configured to generate a first pattern beam. The light-emitting pattern stack layer is configured to generate a second pattern beam. The transparent barrier layer is disposed between the light-emitting stack layer and the light-emitting pattern stack layer. The optical imaging module is configured to enable the first pattern beam to form a first floating image, and enable the second pattern beam to form a second floating image. The power supply module is electrically connected to the light-emitting stack layer and the light-emitting pattern stack layer, and configured determine whether to generate the first or second floating image by switching between the light-emitting stack layer and the light-emitting pattern stack layer to emit light.

Switchable floating image display device

A light source module including a light guide plate and a light emitting element is provided. The light guide plate includes an upper surface concentric circle structure and a lower surface concentric circle structure opposite to the upper surface concentric circle structure. The center of the upper surface concentric circle structure corresponds to the center of the lower surface concentric circle structure. The light emitting element is disposed corresponding to the center of the upper surface concentric circle structure and the center of the lower surface concentric circle structure.

Growing community of inventors

Taipei, Taiwan

Chia-Ping Lin