Image display device

• US 6,731,254 B2
• Filed: 04/23/2001
• Issued: 05/04/2004
• Est. Priority Date: 04/24/2000
• Status: Expired due to Fees

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Maeda, Yoshihiro
• Primary Examiner(s): WU, XIAO MIN
• Application Number:
  US09/840,221
• Publication Number:
  US 20010050660A1
• Time in Patent Office: 1,107 Days
• Field of Search: 345/7, 345/8, 345/9, 348/51, 348/52, 348/53, 348/54, 349/11, 349/15, 349/13, 359/629, 359/630, 359/631, 359/632, 359/633, 359/831, 359/832, 359/833, 359/834, 351/158
• US Class Current: 345/8
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/0136 with a single image source for both eyes
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features

Abstract

An image display device is disclosed. The image display device comprises right and left image display means arranged to direct display plane to right and left outsides substantially respectively in the vicinity of central portion of user'"'"'s both eyes in operation mode observing image, and right and left optical elements for leading to user'"'"'s right and left eyeballs by reflecting each luminous flux concerning to right and left images from these right and left image display means in a horizontal plane respectively.

Claims

1. An image display device comprising:

right and left image display means arranged to direct a display plane to right and left outsides of a central portion of right and left eyes of a user in an observing image operation mode; and

right and left optical elements which reflect luminous flux concerning right and left images from the right and left image display means in a horizontal plane to the user'"'"'s right and left eyes;

wherein the right and left optical elements each comprise a prism, respectively; and

wherein the image display device further comprises a positioning engage portion for a supporting member installed on a part of at least one ridge line portion of the prisms on a part of the side of the prisms where the luminous flux does not act on the image.

2. An image display device comprising:

right and left image display means which direct a display plane to right and left outsides of a central portion of right and left eyes of a user in an observing image operation mode; and

right and left optical elements which reflect luminous flux concerning right and left images from the right and left image display means in a horizontal plane to the user'"'"'s right and left eyes;

wherein

a main body of the image display device is detachably coupled to a headphone frame of a headphone; and

wherein a nose receiving portion having a circular cross-section is provided to a central portion of the main body of the image display device.

3. An image display device as claimed in claim 2, wherein a video signal and a driving power are received from the headphone.

4. An image display device as claimed in claim 2, wherein the main body of the above image display device is located in the upper part of the headphone frame in the using state observing the image.

5. An image display device as claimed in claim 2, wherein the main body of the above image display device is made a rotatable for the headphone frame.

6. An image display device as claimed in claim 3, wherein the main body of the above image display device is made a rotatable for the headphone frame.

7. An image display device as claimed in claim 4, wherein the main body of the above image display device is made a rotatable for the headphone frame.