Title:
VISUAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3263062
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To present a distinct observed picture capable of presenting a large observation viewing angle of ≥30°, having a large degree of freedom in terms of the position of a pupil and being flat to the periphery.
SOLUTION: This visual display device includes a picture display element 5 constituted so that its picture display surface may be nearly planer shape, a relay optical system 4 forming a planar picture on the element 5 as an intermediate picture 3, and an ocular optical system 2 guiding the picture 3 so that an observer can observe it as a virtual image. The optical system 4 and the optical system 2 are constituted to generate a field curvature aberration where signs are inverted, and the optical system 2 is constituted of a 1st group arranged on the optical system 4 side and a 2nd group arranged on a pupil side. By the optical systems 4 and 2, the field curvature in the virtual image observed by the observer is compensated though the picture 3 has curved shape. Then, high performance that the observation viewing angle is ≥30° is realized while increasing the degree of freedom in terms of design because of functional allotment by the 1st and the 2nd groups.
Inventors:
Osamu Onuma
Application Number:
JP2000111691A
Publication Date:
March 04, 2002
Filing Date:
April 27, 1993
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
G02B25/00; G02B27/02; G09F9/00; H04N5/64; (IPC1-7): G02B27/02; G02B25/00; G09F9/00; H04N5/64
Domestic Patent References:
| JP3101709A | ||||
| JP387709A | ||||
| JP4177313A |
Attorney, Agent or Firm:
Hiroshi Nirazawa (7 outside)