Composite gradient index and curved surface anamorphic lens and

Details Composite gradient index and curved surface anamorphic lens and Composite gradient index and curved surface anamorphic lens and

1988-07-01

1990-02-13

Arnold, Bruce Y.

G02B 1308, G02B 2610

Patent

active

049001388

ABSTRACT:
A composite gradient index and curved surface anamorphic lens has a gradient index of refraction and at least one curved surface. Combinations of planar and radial gradients with spherical and cylindrical surfaces are described. A corrector for an light source whose beam divergences are different in orthogonal planes using such a lens and a light beam scanning mechanism are disclosed. In the light beam scanning system, a homogeneous toroidal lens is replaced by a toroidal equivalent gradient-index lens, hereafter referred to as a TEGIL. The lens reduces undesirable displacement of the focus light beam from a scan line on a receptor plane and from the receptor plane itself. The TEGIL comprises a body of gradient-index material having cylindrical faces for generating optical power in a first dimension and whose gradient-index generates optical power in an orthogonal dimension.

REFERENCES:
patent: 4025157 (1977-05-01), Nartin
patent: 4805997 (1989-02-01), Asaham et al.
Laser Diode to Fiber Coupling Using Anamorphic Gradient Index Lenses Stagaman & Moore.

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