Anastigmatic eyepiece

Details Anastigmatic eyepiece Anastigmatic eyepiece

1982-09-23

1986-11-18

Corbin, John K.

350477, 350481, G02B 2500, G02B 904, G02B 912

Patent

active

046232249

ABSTRACT:
The invention is an eyepiece which is corrected for spherical aberration, coma, astigmatism, curvature of field, and longitudinal and lateral chromatic aberrations. The invention comprises a negative lens component, and two positive lens components, the components being spaced so that a real image is formed between the two positive components. Alternatively, the negative component and one positive component can be combined into a single thick positive component.

REFERENCES:
Cox, R. T.; "Gleanings for ATM's"; Sky & Telescope; vol. 22, No. 5; Nov. 1961; pp. 294-296.

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