Apparatus for projecting space image

Patent metadata

Field	Value
Publication number	US-9348146-B2
Application number	US-201313773364-A
Country	US
Kind code	B2
Filing date	Feb 21, 2013
Priority date	Feb 22, 2012
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

An apparatus for projecting a space image in accordance with an embodiment of the present invention includes: a receiving unit configured to receive the space image; a display unit configured to display the space image and to emit light; a control unit configured to control the display unit to display the space image; and a projection unit configured to allow the light to permeate or reflect the light and to project the space image.

First claim

What is claimed is:

1. An apparatus for projecting a space image, comprising:
a receiving unit configured to receive the space image;
a display unit configured to display the space image and to emit light;
a control unit configured to control the display unit to display the space image; and
a projection unit configured to allow the light to permeate or reflect the light and to project the space image,
wherein the projection unit comprises a first lens and a second lens which are a liquid crystal lens or a liquid lens placed in front of the display unit,
wherein the receiving unit is configured to further receive a projection position signal for requesting a change of a position at which the space image is projected, and
wherein the control unit is configured to switch a state of each of the first lens and the second lens to an operation state or a non-operation state in accordance with the projection position signal.

2. The apparatus of claim 1 , wherein the second lens is arranged in between the first lens and the display unit,
wherein the control unit is configured to switch the state of the first lens to the operation state and switch the state of the second lens to the non-operation state if the projection position signal is a signal for requesting the space image to be projected at a first position, and
wherein the control unit is configured to switch the state of the first lens to the non-operation state and switch the state of the second lens to the operation state if the projection position signal is a signal for requesting the space image to be projected at a second position.

3. An apparatus for projecting a space image, comprising:
a receiving unit configured to receive the space image;
a display unit configured to display the space image and to emit light;
a control unit configured to control the display unit to display the space image; and
a projection unit configured to allow the light to permeate or reflect the light and to project the space image,
wherein the projection unit comprises, and in the order of, a first convex lens, a first shutter, a first concave lens, a second convex lens, a second shutter, a second concave lens and a third convex lens,
wherein the receiving unit is configured to further receive a projection position signal for requesting a change of a position at which the space image is projected, and
wherein the control unit is configured to control opening or closing of the first shutter and the second shutter in accordance with the projection position signal.

4. The apparatus of claim 3 , wherein the first convex lens is closest to the display unit among said lenses,
wherein the controls unit is configured to control the first shutter to be closed if the projection position signal is for requesting the space image to be projected at a first position, and
wherein the control unit is configured to control the first shutter to be opened and the second shutter to be closed if the projection position signal is for requesting the space image to be projected at a second position.

5. An apparatus for projecting a space image, comprising:
a receiving unit configured to receive the space image;
a display unit configured to display the space image and to emit light;
a control unit configured to control the display unit to display the space image; and
a projection unit configured to allow the light to permeate or reflect the light and to project the space image,
wherein the projection unit comprises:
a floating lens configured to project the space image at a first position by allowing the light emitted by the display unit to permeate; and
a floor lens configured to project the space image at a second position by reflecting the light projected from the floating lens,
wherein the floor lens is arranged in front of the display unit and the floating lens is arranged in between the display unit and the floor lens.

Assignees

• Univ Kwangwoon Ind Acad Collab
• Kwangwoon University Industry—Academic Collaboration Foundation

Inventors

• Kim Eun-Soo
• Kim Seung-Cheol

Classifications

• G02B30/56 Primary

  by projecting aerial or floating images · CPC title

• G02B27/2292 Primary

  Physics · mapped topic

• G02F1/13

  based on liquid crystals, e.g. single liquid crystal display cells · CPC title