5results about How to "Improve light collection" patented technology

A backlit X-ray diffraction imaging device based on bent crystal coupling includes a high-power pulsed laser source, a metal target, a spherical bent crystal, a dual-focus photon sieve and a detector. The present invention utilizes a spherical bent crystal to converge the divergent X-rays generated by the high-power pulsed laser source loaded on the metal target to perform X-ray backlighting on the object to be measured, and then diffracts and images through the dual-focus photon sieve, and the detector receives the amplified imaging results. Compared with the existing backlit diffraction imaging, the present invention can increase the light flux in the imaging system by three orders of magnitude, increase the detection efficiency of the imaging system, and can achieve two-level zoom, making it simple to change the imaging magnification in experimental detection. Combined with the imaging characteristics of high time / space resolution and large field of view of backlit diffraction imaging, the present invention can be applied to research fields such as plasma fluid dynamics instability imaging and ultrafast biological living cell imaging.

The invention provides a large-aperture millimeter wave infrared common-aperture antenna based on an optical synthetic aperture, and relates to the crossing field of optical and microwave detection technologies. According to the invention, the large-aperture millimeter wave infrared common-aperture antenna based on the optical synthetic aperture is adopted, so that the functions of infrared large-range search detection and precise tracking, fine identification and striking guiding of a millimeter wave array can be realized; the large-aperture optical design is adopted, so that the light collecting capacity and the resolution ratio of the optical system are improved, and the penetrating capacity of the optical system in dense fog, dense smoke, dust and cloud layers is enhanced; a large-aperture millimeter wave array design is adopted, so that the power of the millimeter wave array antenna is effectively improved; a frequency selective surface primary and secondary mirror technology is adopted, an infrared imaging system and a millimeter wave array antenna are effectively compatible, and the requirement for optical and microwave cooperative long-distance detection in the space-based field is met.

This invention discloses an ultra-high-speed collisional flash spectral detection system based on an image intensifier, which addresses the technical problems of existing detection systems, such as severe sagittal astigmatism and poor spot convergence, caused by cumbersome assembly processes and poor measurement stability. The detection system includes a slit, a first folded-axis mirror, a curved prism, a second folded-axis mirror, a correction mirror group, and a planar grating arranged sequentially along the optical path, as well as an image intensifier. The correction mirror group is an optical multiplexing lens group, including a first positive lens, a first negative lens, and a second positive lens arranged sequentially. The first positive lens, the first negative lens, and the second positive lens form a collimating lens group along the incident light path and an imaging lens group along the reflected light path. The overall system structure is relatively compact. By combining the correction mirror group with the curved prism, the system's sagittal astigmatism is significantly reduced, and the spot convergence is enhanced.

The invention relates to a concentric glued curved surface prism light splitting type hyperspectral imaging system and method, and the method comprises the steps: receiving light rays through a plano-convex lens, and converging a light beam with a specified aperture in the light rays to obtain a converged light beam; the meniscus lens receives and diverges the convergent beam to obtain a divergent beam; the first curved-surface prism and the second curved-surface prism receive the divergent light beams and respectively generate two monochromatic convergent light rays; two monochromatic convergent light rays are reflected on the surface, far away from the first curved surface prism, of the second curved surface prism, sequentially enter the second curved surface prism, the first curved surface prism, the meniscus lens and the plano-convex lens, and finally converge to an image plane; wherein the convex spherical surface of the plano-convex lens and the inner concave surface of the meniscus lens are mutually glued; the surface, close to the second curved-surface prism, of the first curved-surface prism and the surface, close to the first curved-surface prism, of the second curved-surface prism are mutually glued. And the vertex angles of the two curved prisms are oppositely arranged. The device is simple and compact in structure and convenient to install, adjust and calibrate, and meanwhile light weight is achieved.

This invention relates to an underwater visible and near-infrared image-side telecentric imaging system. Its optical system includes two spherical refractive lenses and one planar superlens, with all optical elements having a coaxial structure. The arrangement, in order of light incidence, is: a negative lens bent towards the light incidence direction, a positive lens facing away from the light incidence direction, and the planar superlens. The system's aperture stop is located on the front surface of the negative lens. This invention utilizes a combination of positive and negative lenses and a superlens to achieve aberration correction and balance. Designed with an image-side telecentric structure, this invention can serve as a telescope system for visible and near-infrared imaging spectrometers, and can also be used independently as a visible and near-infrared imaging lens. The system features a relatively large aperture, excellent imaging quality, and a compact, small structure.