Annular shutter mirror

Details Annular shutter mirror Annular shutter mirror

1997-07-02

2000-02-15

Nelms, David

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359224, 359295, 359847, G02B 2608, G02B 508

Patent

active

060259531

ABSTRACT:
An annular shutter mirror which can selectively shut off a part of light beams progressing toward a target in the progressing direction thereof. The annular shutter mirror utilizes a fixed reflection face to reflect an incident light beam at a constant angle in accordance with an incident angle of the incident light beam. Around the periphery of the fixed reflection face, at least one flexible reflection face is formed in a shape of annular band. This at least one flexible reflection face selectively reflects an incident light beam at an angle different from a reflective angle of the fixed reflection area in accordance with an application condition of an electrical field.

REFERENCES:
patent: 3343448 (1967-09-01), Baird
patent: 4705365 (1987-11-01), Wakita et al.
patent: 4741609 (1988-05-01), Sallis
patent: 5109300 (1992-04-01), Waddell
patent: 5737302 (1998-04-01), Kasahara

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