Scanning optical system

Details Scanning optical system Scanning optical system

1996-02-26

1998-09-15

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359206, 359207, 359662, G02B 2608

Patent

active

058087737

ABSTRACT:
A scanning optical system is provided with a scanning lens which images a luminous flux deflected by a deflector at a constant angular speed on a surface to be scanned so that the luminous flux scans the surface to be scanned substantially at a constant speed. At the cross section in the main scanning direction, the luminous flux incident on the scanning lens is a convergent light beam, and the scanning lens includes from the deflector side a first lens of a positive paraxial refractive power and a second lens of a negative paraxial refractive power.

REFERENCES:
patent: 3973833 (1976-08-01), Lawson
patent: 5086350 (1992-02-01), Nishihata
patent: 5128795 (1992-07-01), Endou et al.
patent: 5179465 (1993-01-01), Kondo
patent: 5206755 (1993-04-01), Yamakawa
patent: 5343325 (1994-08-01), Yamakawa
patent: 5715079 (1998-02-01), Ono

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