The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2001
Filed:
Jun. 07, 1999
Applicant:
Inventors:
Satoshi Ohuchi, Kamakura, JP;
Masahiko Yatsu, Fujisawa, JP;
Taro Imahase, Fujisawa, JP;
Tomohiro Miyoshi, Fujisawa, JP;
Yasuo Otsuka, Chigasaki, JP;
Takesuke Maruyama, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 2/710 ; G02B 2/712 ; G03B 2/742 ; F21V 9/14 ;
U.S. Cl.
CPC ...
G02B 2/710 ; G02B 2/712 ; G03B 2/742 ; F21V 9/14 ;
Abstract
The present invention discloses the structure of the array lens that at least any one of the diagonal size, vertical size and lateral size of lens cell is set to almost 1/(4.5 or more) for each corresponding size of the display elements. The diagonal size of lens cell is set to almost 0.18 inch or less. The total number of lens cells is set to almost 240 or more. Finally, the lens focal distance of lens cell is set to almost 30 mm or less.