Kenneth Eugene Siegenthaler
Engineers at Sun Hl Dr, Colorado Springs, CO
License number
Colorado 16486
Issued Date
Aug 1, 1979
Renew Date
Nov 1, 2013
Expiration Date
Oct 31, 2015
Type
Professional Engineer
Address
Address
575 Sun Hills Dr, Colorado Springs, CO 80921
Professional information
Grin Optical System
US Patent:
5644122, Jul 1, 1997
Filed:
Jul 11, 1995
Appl. No.:
8/500615
Inventors:
Kenneth E. Siegenthaler - Colorado Springs CO
James R. Rotge - Albuquerque NM
James R. Rotge - Albuquerque NM
Assignee:
Aptek, Inc. (Siegenthaler) - Colorado Springs CO
International Classification:
G02B 2304
US Classification:
250214VT
Abstract:
An optical system includes graded refractive index ("GRIN") optical elements. An objective optical element and an ocular optical element, each including at least one GRIN element, are located in an optical path which is substantially voidless. The optical system is not susceptible to fogging due to the absence of voids in the optical path. An image intensifier may be positioned in the optical path between the objective and ocular optical elements. The image intensifier responds primarily to invisible light and creates an amplified level of light substantially at a predetermined visible wavelength. A beam splitter may be used to split the light from the objective optical element into ranges of visible and invisible wavelengths. The range of visible light is directed through a first light channel to a beam combiner. The range of invisible light is directed through a second light channel to the image intensifier.