30 results about "Infrared telescope" patented technology

An infrared telescope utilizes two mirrors in an off-axis, eccentric-pupil, re-imaging configuration. To improve the image quality of traditional two mirror telescopes, the reflective surfaces of both the primary and secondary mirrors are ellipsoidal. The ellipsoidal surface of the primary mirror has a greater eccentricity than the ellipsoidal surface of the secondary mirror. The infrared light entering through the eccentric pupil strikes the ellipsoidal reflective surface of the primary mirror. The light is reflected from the primary mirror to the ellipsoidal reflective surface of the secondary mirror. An intermediate image of the object being viewed is formed between the primary and secondary mirrors. The light is reflected from the secondary mirror to an image plane. An aperture stop is located between the secondary mirror and the image plane. The image plane is typically located within a cold shield, to reduce the likelihood that stray light will reach the image plane.

The invention discloses an optical machine structure based on infrared area array detector scanning and imaging. The structure comprises a pitching orientating lens 1, an infrared telescope lens 2, a direction compensation pendulum lens 3, an infrared imaging lens 4, an infrared area array focal plane detector 5 and a direction scanning rotary table 6. By the aid of the structure, one single infrared area array detector is capable of scanning and imaging overall by 360 degrees, the fuzzy effect is prevented during infrared image acquisition due to rotation of the platform, and the advantages of long integral time and high sensitivity of the infrared area array focal plane detector can be played fully. The structure has the advantages that overall scanning is implemented, image fuzzy slur is avoided, and the telescope structure and a secondary imaging objective lens structure are combined.

The invention discloses an adjustable support device for a large aperture infrared telescope based on a gradient porous structure. The supporting device of the existing large-aperture infrared telescope cannot be adjusted. And there are large assembly stress and residual stress. The invention includes a flexible unit, a support base and a fixed unit. The flexible unit includes a top support plate, a flexible support column and a bottom support plate; both ends of the flexible support column are respectively fixed to the centers of the top support plate and the bottom support plate. The flexible support column includes a top heat insulation block, a flexible support block and a bottom heat insulation block. The top heat insulation block is provided with a top heat resistance hole. Along the direction from the outer end to the inner end of the top heat insulation block, the diameter of the top heat resistance hole gradually increases. Bottom heat-resisting holes are provided on the bottom heat-insulating block. Along the direction from the outer end to the inner end of the bottom heat insulation block, the diameter of the bottom heat resistance hole gradually increases. The invention can change the shrinkage of the shape memory alloy by adjusting the magnitude of the input current, and then adjust the spatial pose of the large-diameter reflector.

The invention discloses a black body spherical surface temperature measurement system for external field infrared radiation measurement and correction. A tailor-made black body target ball which hangs under a common sounding balloon rises into the air at a certain raising speed. A plurality of temperature sensors are arranged on the surface of the black body target ball and are used for sounding the ball surface temperature and transmitting the measured data which is subjected to primary treatment of a microprocessor to the ground through a wireless data transmission module. A wireless data receiving module on the ground transmits the received data to a data processing computer, and the data processing computer processes the data so as to obtain an actual temperature of the target ball surface. The infrared radiation data of the target ball in a specific wave band can be acquired according to the target ball surface temperature, the infrared emitting ability and the projected area. The target ball is tracked and detected by an infrared telescope so as to acquire the infrared radiation data of the target ball. A correction parameter can be acquired by analyzing and comparing the two kinds of radiation data.

The invention discloses a South Pole infrared telescope sealing window capable of preventing and removing frost and a manufacturing method thereof. An optical medium film system is arranged on a substrate of sealing window glass; the optical medium film system contains a transparent conductive film layer; the South Pole infrared telescope sealing window is characterized in that the transparent conductive film layer is divided into two layers, namely a planar transparent conductive film and a linear transparent conductive film; an insulating dielectric antireflective film layer is arranged between the planar transparent conductive film and the linear transparent conductive film; two electrodes are arranged on the edge of the upper surface of the transparent conductive film layer; the linear transparent conductive film and the planar transparent conductive film are connected in parallel. The invention is applicable to sealing window defrosting of a sealing window-type South Pole infrared telescope; the problem that the conventional transparent conductive film cannot be applied to an infrared spectral zone is solved; the infrared transmittance of the sealing window is improved to a great extent.