Abstract: An electro-optical framing camera forward motion compensation (FMC) system comprising a moving shutter and a full frame focal plane array detector is disclosed. The reconnaissance system is designed to minimize the variation of image motion from a target scene across the focal plane array. The full frame focal plane array, such as a Charge Coupled Device (CCD), is designed to transfer and add the image from pixel to pixel at a predetermined rate of image motion corresponding to the region exposed by the focal plane shutter. The focal plane shutter aperture and velocity are set to predetermined values coordinated with the available illumination. The CCD image transfer rate is set to minimize the smear effects due to image motion in the region of the scene exposed by the focal plane shutter. This rate is variable with line of sight depression angle, aircraft altitude, and aircraft velocity/altitude ratio.

Abstract: An electro-optical framing camera forward motion compensation (FMC) system comprising a moving shutter and a full frame focal plane array detector is disclosed. The reconnaissance system is designed to minimize the variation of image motion from a target scene across the focal plane array. The full frame focal plane array, such as a Charge Coupled Device (CCD), is designed to transfer and add the image from pixel to pixel at a predetermined rate of image motion corresponding to the region exposed by the focal plane shutter. The focal plane shutter aperture and velocity are set to predetermined values coordinated with the available illumination. The CCD image transfer rate is set to minimize the smear effects due to image motion in the region of the scene exposed by the focal plane shutter. This rate is variable with line of sight depression angle, aircraft altitude, and aircraft velocity/altitude ratio.

Abstract: An electro-optical system including a scanning mirror for scanning an image across an array of radiation detectors. An analog signal generated by the scanning mechanism is utilized to provide a sweep signal in a first axis. A second sweep signal in another axis is operated independently of the first sweep signal. The outputs of the detector array are electronically multiplexed through a plurality of channels and integrated between successive samplings of each detector. A provision for equalizing the outputs of each detector in the array is included. The output of the electronic multiplexer may be utilized to provide a video display in conjunction with the sweep signals, or may be applied to a conventional optical display.

Abstract: An optical system utilizing a lens element having a spherical surface incorporating a narrow bandpass filter, with the spherical surface being of such configuration that converging rays are normal to its surface, thereby permitting the narrow bandpass filter to operate with minimum bandwith, thus maximizing the rejection of unwanted background radiation. The surface of the lens element opposite the surface having the narrow bandpass filter may incorporate a dichroic filter, enabling the lens element to operate in a dual mode, with the dichroic filter reflecting entering visible light energy but being transparent to laser light energy, and the narrow bandpass filter thereafter eliminating wavelengths outside a given laser spectrum. As an example, my novel lens element may be used as a part of a catadioptric objective system sensitive to both visible and laser light frequencies.