Claims
- 1. A head-mounted image display apparatus for mounting on a head of a user with eyes having a horizontal line of vision, the apparatus comprising:an image display unit for forming an optical image; an enlarging lens for focusing said optical image to the eyes; said image display unit and said enlarging lens being positioned on an optical axis formed at an angle of depression relative to said eye's horizontal line of vision; a diopter adjustment unit that moves said image display unit relative to said enlarging lens along said optical axis while maintaining said angle of depression of said optical axis relative to said eye's horizontal line of vision; first and second image display units; first and second enlarging lenses; and first and second diopter adjustment units, said first diopter adjustment unit operating independently of said second diopter adjustment unit to move said first display unit, and said second diopter adjustment unit operating independently of said first diopter adjustment unit to move said second display unit.
- 2. The head-mounted image display apparatus according to claim 1, wherein said angle of depression is 10° or less.
- 3. The head mounted image display apparatus according to claim 1, wherein said angle of depression is 6° or less.
Priority Claims (4)
Number |
Date |
Country |
Kind |
5-206393 |
Aug 1993 |
JP |
|
5-217552 |
Sep 1993 |
JP |
|
5-231963 |
Sep 1993 |
JP |
|
5-242791 |
Sep 1993 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a division of application Ser. No. 08/970,544, filed Nov. 14, 1997, now abandoned, which is a continuation of Ser. No. 08/416,893, filed Jun. 22, 1995, now issued U.S. Pat. No. 5,739,893, which is a 371 of PCT/JP94/01248 filed Jul. 29, 1994, which are incorporated by reference herein in their entirety.
US Referenced Citations (29)
Foreign Referenced Citations (30)
Number |
Date |
Country |
1 116 801 |
Jan 1982 |
CA |
0 252 200 |
Jan 1988 |
EP |
0 344 881 |
Dec 1989 |
EP |
0 395 570 |
Oct 1990 |
EP |
0 438 362 |
Jul 1991 |
EP |
0 460 983 |
Dec 1991 |
EP |
0 479 422 |
Apr 1992 |
EP |
0 479 605 |
Apr 1992 |
EP |
0 537 945 |
Apr 1993 |
EP |
0 575 257 |
Dec 1993 |
EP |
0 592 318 |
Apr 1994 |
EP |
2 679 693 |
Jan 1993 |
FR |
2 681 702 |
Mar 1993 |
FR |
26 265 |
May 1912 |
GB |
1 264 343 |
Feb 1972 |
GB |
2 206 421 |
Jan 1989 |
GB |
2 259 213 |
Mar 1993 |
GB |
2 278 692 |
Dec 1994 |
GB |
1-133479 |
May 1989 |
JP |
2-1723 |
Jan 1990 |
JP |
4-22358 |
Jan 1992 |
JP |
5-48991 |
Feb 1993 |
JP |
5-100192 |
Apr 1993 |
JP |
5-183838 |
Jul 1993 |
JP |
5-328256 |
Dec 1993 |
JP |
2526226 |
May 1994 |
JP |
6-141260 |
May 1994 |
JP |
WO 9104508 |
Apr 1991 |
WO |
WO 9203756 |
Mar 1992 |
WO |
WO 9301683 |
Jan 1993 |
WO |
Non-Patent Literature Citations (6)
Entry |
No. 571, Nikkei Electronics published Jan. 4, 1994, Head-mounted Image Display Apparatus by Sony (prototype). |
Nikkei Electronics Jan. 2, 1984, pp. 158-177. |
“Machine A Ecrire Electronique Compacte Canon, AP150, Mode D'Emploi” 1985, Canon, France XP002019816, pp 15-18 & pp 47-48. |
ICL Technical Journal, vol. 7, No. 2, Nov. 1990, Oxford, GB, pp 384-411. |
Optical Engineering vol. 13, No. 4 Jul. 1974-Aug. 1974. pp 339-342. |
EPO Communication re: Application No. EP 98 20 2807 (Search report). |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/416893 |
|
US |
Child |
08/970544 |
|
US |