| 摘要 |
A wide angle large reflective unobscured system (10) includes a primary convex reflective element (12) for receiving a broad range of energy, a secondary concave reflective element (14) for reflecting the energy from the primary reflective element (12) to reimage a virtual entrance pupil at a real aperture stop. A beamsplitter element (16) is provided for reflecting a first portion of the energy, such as visible energy, to a first tertiary concave reflective mirror (18), while transmitting a second portion of the energy, such as IR light, to a second tertiary concave reflector (20). Each tertiary reflector is capable of focusing the received energies to dual focal planes wherein a compact detector array (22, 24) assembly can convert the images to electronic signals. The beamsplitter element (16) has aspherical surfaces (16a,16b) for controlling aberrations. The system (10) is used in head mounted displays. <IMAGE> |
