2results about How to "Improve light collection" patented technology

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.

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.