08837880 is referenced by 114 patents and cites 17 patents.

The invention is directed to provide a virtual image display device capable of setting the aspect ratio of the image light entering the eyes of the observer as a virtual image to a desired state while fulfilling the design limitations. In the invention, the aspect ratio of the virtual image can be converted to the aspect ratio (16:9) laterally longer than the aspect ratio (4:3) of the image area due to the conversion in the aspect ratio conversion optical system. Thus, the aspect ratio of the image light to be recognized by the eye of the observer as a virtual image can be adjusted to a desired state even in the case in which, for example, the lateral width of the image forming device with respect to the whole of the virtual image display device is limited by a design requirement.

Title
Virtual image display device
Application Number
13/251614
Publication Number
8837880 (B2)
Application Date
October 3, 2011
Publication Date
September 16, 2014
Inventor
Akira Komatsu
Kamiina-gun
JP
Takahiro Totani
Suwa
JP
Toshiaki Miyao
Matsumoto
JP
Masayuki Takagi
Shiojiri
JP
Takashi Takeda
Suwa
JP
Agent
Oliff
Assignee
Seiko Epson Corporation
JP
IPC
G02B 6/00
G02B 27/01
F21V 8/00
G02B 27/22
G02B 6/24
G02B 6/32
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