摘要:
A seeker/receiver system for a moving body, such as for guiding the moving body to a target, includes an optics/receiver portion that tilts as a unit relative to other parts of the moving body. The optics/receiver portion includes a window which may be used to enclose and protect one or both of a pair of receivers or detectors, such as a laser energy detector or receiver, and an infrared energy detector or receiver. By moving the window and the receivers as a unit a set positional relationship is maintained between all of the elements of the optics/receiver portion. This simplifies the optics by obviating the need for all aspects of the window to present the same properties to energy detectors that tilt relative to it. The optics/receiver portion may be tilted using a tilt mechanism such as a gimbal.
摘要:
A seeker/receiver system for a moving body, such as for guiding the moving body to a target, includes an optics/receiver portion that tilts as a unit relative to other parts of the moving body. The optics/receiver portion includes a window which may be used to enclose and protect one or both of a pair of receivers or detectors, such as a laser energy detector or receiver, and an infrared energy detector or receiver. By moving the window and the receivers as a unit a set positional relationship is maintained between all of the elements of the optics/receiver portion. This simplifies the optics by obviating the need for all aspects of the window to present the same properties to energy detectors that tilt relative to it. The optics/receiver portion may be tilted using a tilt mechanism such as a gimbal.
摘要:
An off-axis reflective transmit telescope for a DIRCM system is mounted on the gimbal along a transmit-axis offset laterally from the optical axis of the receive telescope but nominally aligned with the line-of-sight of the receive telescope to transmit a laser beam. The telescope comprises an optical port optically coupled to a laser to receive and direct the laser beam away from the dome and a reflective optical assembly that reflects the laser beam through the dome. The reflective optical assembly comprises an off-axis mirror segment and a second optical element that together precompensate the laser beam for dome aberrations induced by the lateral offset of the transmit telescope's transmit axis from the optical axis. The off-axis mirror segment comprises a segment of a parent mirror having an aspheric curvature (e.g. parabolic, elliptical or higher-order asphere) about an axis of symmetry. The segment is offset so that it is not centered on the axis of symmetry of the parent mirror. The use of the off-axis mirror segment allows the optical port and any folding mirror to be positioned so that they do not obscure the reflected laser beam. The second optical element may be a segment of a dome corrector parent lens, a prism or a refractive lens formed on the front surface of the off-axis minor segment.
摘要:
An off-axis reflective transmit telescope for a DIRCM system is mounted on the gimbal along a transmit-axis offset laterally from the optical axis of the receive telescope but nominally aligned with the line-of-sight of the receive telescope to transmit a laser beam. The telescope comprises an optical port optically coupled to a laser to receive and direct the laser beam away from the dome and a reflective optical assembly that reflects the laser beam through the dome. The reflective optical assembly comprises an off-axis mirror segment and a second optical element that together precompensate the laser beam for dome aberrations induced by the lateral offset of the transmit telescope's transmit axis from the optical axis. The off-axis mirror segment comprises a segment of a parent mirror having an aspheric curvature (e.g. parabolic, elliptical or higher-order asphere) about an axis of symmetry. The segment is offset so that it is not centered on the axis of symmetry of the parent mirror. The use of the off-axis mirror segment allows the optical port and any folding mirror to be positioned so that they do not obscure the reflected laser beam. The second optical element may be a segment of a dome corrector parent lens, a prism or a refractive lens formed on the front surface of the off-axis minor segment.
摘要:
A semi-active laser (SAL) sensing system is thus provided that uses a lens concentrator system to pass received reflected laser light from an aperture to a detector. The lens concentrator system facilitates the use of SAL systems with different laser designator wavelengths to improve the performance of the SAL system. In one embodiment, the lens concentrator system is formed from polymer having substantial optical clarity for radiation having wavelengths between approximately 1.5 and approximately 1.65 μm. For example, the lens concentrator system may be formed from amorphous fluoropolymer. The lens concentrator system formed from amorphous fluoropolymer facilitates the use SAL designators using different wavelengths than those in past SAL sensing systems.
摘要:
An optical component, for example a lens, integrally formed of a nano/nano class nanocomposite optical ceramic (NNCOC) material. The constituent nanograin materials of the NNCOC material are selected to tailor the thermal and optical properties of the lens so as to provide a lens with a substantially constant focal length over an operating temperature range and/or an optical system in which the image position does not change appreciably over the operating temperature range.
摘要:
Optical systems configured to withstand operation in high acceleration and varying temperature environments, and methods of assembling the same. In one example, an imaging optical apparatus includes a primary minor made of an unreinforced polymer, a secondary mirror made of the unreinforced polymer and optically coupled to the primary minor, a field lens optically coupled to the secondary minor, and a strut having a plurality of cross-struts and mounting features configured to mount the primary minor, the secondary mirror and the field lens. In some examples, the imaging optical apparatus further includes an outer retainer disposed behind the primary minor and coupled to the strut, and an inner retainer disposed behind the field lens and coupled to the strut, the outer and inner retainers configured to structurally support the primary minor and the field lens and to accommodate deflections of the primary minor.
摘要:
A semi-active laser (SAL) sensing system is thus provided that uses a lens concentrator system to pass received reflected laser light from an aperture to a detector. The lens concentrator system facilitates the use of SAL systems with different laser designator wavelengths to improve the performance of the SAL system. In one embodiment, the lens concentrator system is formed from polymer having substantial optical clarity for radiation having wavelengths between approximately 1.5 and approximately 1.65 μm. For example, the lens concentrator system may be formed from amorphous fluoropolymer. The lens concentrator system formed from amorphous fluoropolymer facilitates the use SAL designators using different wavelengths than those in past SAL sensing systems.
摘要:
An optical component, for example a lens, integrally formed of a nano/nano class nanocomposite optical ceramic (NNCOC) material. The constituent nanograin materials of the NNCOC material are selected to tailor the thermal and optical properties of the lens so as to provide a lens with a substantially constant focal length over an operating temperature range and/or an optical system in which the image position does not change appreciably over the operating temperature range.
摘要:
Optical systems configured to withstand operation in high acceleration and varying temperature environments, and methods of assembling the same. In one example, an imaging optical apparatus includes a primary minor made of an unreinforced polymer, a secondary mirror made of the unreinforced polymer and optically coupled to the primary minor, a field lens optically coupled to the secondary minor, and a strut having a plurality of cross-struts and mounting features configured to mount the primary minor, the secondary mirror and the field lens. In some examples, the imaging optical apparatus further includes an outer retainer disposed behind the primary minor and coupled to the strut, and an inner retainer disposed behind the field lens and coupled to the strut, the outer and inner retainers configured to structurally support the primary minor and the field lens and to accommodate deflections of the primary minor.