Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Patent
1999-01-11
1999-10-19
Epps, Georgia
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
G02B 2710
Patent
active
059698721
ABSTRACT:
A novel optical system operative to transfer, with high efficiency, optical power from a line source, such as a LDB, built from a plurality of individual light sources with different angular distribution in two orthogonal axis into a rectangular area with a particular aspect ratio and two different numerical apertures. The near field pattern of a LDB is imaged onto the plane of an SLM. The system utilizes light generated from an LDB having a plurality of individual light sources to illuminate a microlens array. The microlens array, consisting of a plurality of microlenses, functions to collimate the light from the LDB in the slow axis. An optical element adjacent the microlens array refracts the light in the fast axis. In the slow axis, the light from the microlens array is incident upon an optical element which focuses the light onto the SLM plane such that the light from each point light source illuminates the entire active pixel area of the SLM. An additional optical element focuses the light in the fast axis to generate the required spot image. The optical system of the present invention utilizes natural aberrations and/or artificial aberrations to decrease the sensitivity of the optical system to the smile phenomena exhibited by most laser diode bars.
REFERENCES:
patent: 5049901 (1991-09-01), Gelbart
patent: 5132723 (1992-07-01), Gelbart
patent: 5333077 (1994-07-01), Legar et al.
patent: 5420722 (1995-05-01), Bielak
patent: 5448395 (1995-09-01), Lopez et al.
patent: 5465175 (1995-11-01), Woodgate et al.
patent: 5517359 (1996-05-01), Gelbart
patent: 5521748 (1996-05-01), Sarraf
patent: 5729386 (1998-03-01), Hwang
patent: 5748374 (1998-05-01), Neijzen et al.
James R. Legar et al.; "Geometrical Transformation of Linear Diode-Laser Array for Longitudinal Pumping of Solid-Stato Lasers"; IEEE Journal of Quantum Electronics, Vol. 28, No. 4., Apr. 1992., pp. 1088-1100.
Dan Gelbart; "High Power Multi-Channel Writing Heads", IS&T's Tenth Intl. Congress on Advances in Non Impact Printing Tech., pp. 337-339, 1994.
Ben Oren Ilan
Komem Amir
Ronen Josef
Steinblatt Serge
Epps Georgia
Mack Ricky
Scitex Corporation Ltd.
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