VIDEOPHONE APPARATUS

• US 20080106592A1
• Filed: 11/05/2007
• Published: 05/08/2008
• Est. Priority Date: 11/08/2006
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Mikami, Junya
• Granted Patent: US 8,120,640 B2
• Time in Patent Office: Days
• US Class Current: 348/14.16
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 7/144 camera and display on the same optical axis, e.g. optically multiplexing the camera and display for eye to eye contact

Abstract

Between a display of a videophone apparatus and a cover thereof, there are disposed lenses 114, 116, 118 and a half mirror, having sufficiently small areas as compared to the surface areas of the display and the cover. The half mirror enables light from the display to transmit to the cover, and reflects light from the outside, so as to lead to a camera. The camera is disposed at a position at which the light reflected by the half mirror can be imaged. Lenses 114, 116 are disposed in opposite positions sandwiching the half mirror. Light from the display passes through lens 114, transmits through the half mirror, and further, passes through lens 116, so as to be led to the cover. Also, light from the cover passes through lens 116, and is reflected by the half mirror, and then passing through lens 118, so as to be led to the camera.

Claims

1. A videophone apparatus transmitting an image imaged by a camera and displaying the received image on a display, comprising:

a cover portion covering the surface of the display with a predetermined interval apart from the display;

a half mirror being disposed inside the cover portion and on the surface of the display, and having an area smaller than the surface area of the display;

a first lens of a convex lens being disposed between the display and the half mirror, and leading a portion of light corresponding to the display image to the half mirror;

a second lens of a convex lens being disposed between the cover portion and the half mirror, and leading light transmitted through the half mirror to the cover portion, and also leading light from outside the cover portion to the half mirror; and

a third lens being disposed between the second lens and the half mirror, and leading light incident from the outside the cover portion and reflected by the half mirror to the camera.

2. The videophone apparatus according to claim 1, further comprising:

a filter attenuating the luminance of the light reaching the cover portion, without being transmitted through the half mirror, among the light corresponding to the display image, to a luminance of the light being transmitted through the half mirror.

3. The videophone apparatus according to claim 1, further comprising:

an actuator for making the half mirror movable.

4. The videophone apparatus according to claim 1, further comprising:

two sets of optical units each formed of the combination of the half mirror, the first lens, the second lens and the third lens,

wherein the two sets of the optical units are disposed on the surface of the display inside the cover portion, mutually with a predetermined interval apart in the horizontal direction, and

wherein the third lenses of the optical units lead the light reflected by the half mirrors of the optical units respectively to the left half area and the right half area of an imaging device provided on the camera.