Multi-band lens

Details Multi-band lens Multi-band lens

2005-06-07

2011-11-15

Consilvio, Mark (Department: 2872)

Optical: systems and elements

Lens

Selective wavelength transmitting or blocking

C359S356000

Reexamination Certificate

active

08059344

ABSTRACT:
An optical lens system that focuses both a first band of wavelengths and a second band of wavelengths onto a common focal plane. In some cases, the lens system includes a first region for focusing a first band of wavelengths onto a focal plane, and a second region for focusing a second band of wavelengths onto the same focal plane. Depending on the wavelengths and materials involved, the first region may or may not focus the second band of wavelengths onto the focal plane, and in some cases, may or may not even transmit the second band of wavelengths to the focal plane. Likewise, the second region may or may not focus the first band of wavelengths onto the focal plane, and in some cases, may or may not even transmit the first band of wavelengths onto the focal plane, but this is not required. In some embodiments, an additional lens may be provided between the lens system and the common focal plane to help focus the first band of wavelengths and the second band of wavelengths onto the common focal plane. The additional lens may be made from a material or material system that transmits and focuses both the first band of wavelengths and the second band of wavelengths.

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