Title:
WIDE ANGLE VIEWING DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/109071
Kind Code:
A1
Abstract:
An improved door viewer providing a large area viewable image is disclosed, comprising a wide-angle lens (1), a multiple reflection lens (2) and a diffusing screen (4). The multiple reflection lens comprises a first transmitting surface (12) operative to admit external scene light, second (24a) and third (24b) transmitting surfaces for transmitting light towards a viewer and first (21a) and second (23a) reflecting surfaces. The second reflecting surface surrounds the first transmitting surface. The first reflecting surface surrounds the second transmitting surface. The third transmitting surface surrounds both the first reflecting surface and the second transmitting surface. Low incidence angle light entering first transmitting surface passes through the second transmitting surface towards the viewer. High incidence angle light entering the first transmitting surface, is reflected at the first reflecting surface, reflected at the second reflecting surface, and passes through the third transmitting surface towards the viewer. Said ray paths traverse at least one light-refracting medium.
Inventors:
POPOVICH MILAN MOMCILO (GB)
MESSIOU ANTOINE YVON
MESSIOU ANTOINE YVON
Application Number:
PCT/IB2005/001235
Publication Date:
November 17, 2005
Filing Date:
May 09, 2005
Export Citation:
Assignee:
POPOVICH MILAN MOMCILO (GB)
International Classes:
E06B7/30; G02B13/06; G02B17/08; G02B23/14; G02B25/04; G08B15/00; (IPC1-7): G02B25/04; E06B7/30; G02B13/06; G02B17/08; G02B23/14; G08B15/00
Domestic Patent References:
| WO2000041024A1 | 2000-07-13 |
Foreign References:
| US5042928A | 1991-08-27 | |||
| US2683394A | 1954-07-13 | |||
| US20030099045A1 | 2003-05-29 | |||
| US2964997A | 1960-12-20 | |||
| US5550673A | 1996-08-27 | |||
| US5930055A | 1999-07-27 |
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