Eyepiece for viewing a flat image

Details Eyepiece for viewing a flat image Eyepiece for viewing a flat image

2005-03-29

2005-03-29

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Eyepiece

C359S727000

Reexamination Certificate

active

06873471

ABSTRACT:
An eyepiece (2) for viewing a flat image, which eyepiece (2) has a wide field of view and which eyepiece (2) comprises a cemented doublet of reflecting and refracting optical components, the reflecting and refracting optical components being such that they are each of a different refractive index whereby chromatic aberrations and spherical aberrations are reduced.

REFERENCES:
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patent: 5644436 (1997-07-01), Togino et al.
patent: 5734505 (1998-03-01), Togino et al.
patent: 5801885 (1998-09-01), Togino
patent: 5875056 (1999-02-01), Takahashi
patent: 5940218 (1999-08-01), Takahashi
patent: 6014261 (2000-01-01), Takahashi
patent: 6018423 (2000-01-01), Takahashi
patent: 228354 (1925-02-01), None

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