Dual wavelength wide angle large reflective unobscured system

Details Dual wavelength wide angle large reflective unobscured system Dual wavelength wide angle large reflective unobscured system

1997-02-26

1998-12-08

Nelms, David C.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359365, 359366, 359859, 359861, 359633, 359634, G02B 2714, G02B 1700, G02B 510, G02B 508

Patent

active

058478795

ABSTRACT:
A wide angle large reflective unobscured system includes a primary reflective element for receiving a broad range of energy, a secondary reflective element for reflecting the energy from the primary reflective element to reimage a virtual entrance pupil at a real aperture stop. A beamsplitter element is provided for reflecting a first portion of the energy, such as visible energy, to a first tertiary reflective mirror, while transmitting a second portion of the energy, such as IR light, to a second tertiary reflector. Each tertiary reflector is capable of focusing the received energies to dual focal planes wherein a compact detector array assembly can convert the images to electronic signals.

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