IIIH
US006532116B1
(12) United States Patent ao) Patent No.: us 6,532,116 Bi
Yamazaki (45) Date of Patent: Mar. 11,2003
(54) COMPACT OPTICAL APPARATUS FOR HEAD UP DISPLAY
(75) Inventor: Shoichi Yamazaki, Yokohama (JP)
(73) Assignee: Canon Kabushiki Kaisha, Tokyo (JP)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/713,232
(22) Filed: Nov. 16, 2000
Related U.S. Application Data
(62) Division of application No. 08/879,966, filed on Jun. 20, 1997, which is a continuation of application No. 08/317,528, filed on Oct. 4, 1994.
(30) Foreign Application Priority Data
Oct. 5, 1993 (JP) 5-249417
(51) Int. CI.7 G02B 17/00; G02B 27/10
(52) U.S. CI 359/728; 359/631; 359/633
(58) Field of Search 359/728, 630,
359/631, 632, 633
(56) References Cited
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FOREIGN PATENT DOCUMENTS
EP 0 408 344 1/1991
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OTHER PUBLICATIONS
Partial Translation and Abstract for Japanese Laid-Open Patent Application No. 62-214782.
Abstracts for Japanese Laid-Open Patent Application No. 5-323229.
* cited by examiner
Primary Examiner—Scott J. Sugarman
(74) Attorney, Agent, or Firm—Fitzpatrick, Cella, Harper &
Scinto
