2024 Volume 12 Issue 1 Pages 2-8
Floating touch display systems, which allow touch interaction with a control panel formed as an aerial image by the user's finger, have the problem that the perceived depth position of the aerial image is uncertain, reducing operability. To overcome this problem, a semitransparent mirror is installed on the display device, which reflects light from the hand to form an aerial image of the hand using an optical imaging element. The coincident position between the actual fingertip and the fingertip of the optical image corresponds to the depth position of the aerial image. A prototype system of the floating touch display using a dihedral corner reflector array with the proposed visual feedback using a semitransparent mirror was constructed, and experiments were conducted using simple button operations to measure the accuracy of depth positioning in pointing tasks to evaluate the effectiveness of the proposed method.
