Light bead generating apparatus

Details Light bead generating apparatus Light bead generating apparatus

1997-03-19

1998-12-01

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359207, 359208, G02B 2608

Patent

active

058447083

ABSTRACT:
A light bead generating apparatus has a point light source (11) and a variable optical system (12, 13) of variable focal length, by means of which the point light source (11) is imaged via a light deflecting apparatus (24) in an image plane (14). The variable optical system is formed by two circular cylindrical mirrors (12', 13') which are crossed relative to one another, which have variable focal lengths in the direction of their circular cylinder axes (17', 18') and which are adjustable. They are illuminated by the image forming light beam (19, 19') in the direction of the optical axes (15).

REFERENCES:
patent: 4116527 (1978-09-01), Sick
patent: 5054866 (1991-10-01), Tomita et al.
patent: 5469290 (1995-11-01), Maeda
patent: 5610758 (1997-03-01), Sumi

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