4results about How to "Large numerical aperture" patented technology

The application discloses a wide-spectrum catadioptric objective. The wide-spectrum catadioptric objective comprises a first mirror group, a second mirror group and a third mirror group arranged in sequence along the optical axis direction; the first mirror group comprises a meniscus positive lens, a meniscus negative lens and a plano-convex lens, and the edge region of the first mirror surface of the meniscus positive lens and the second mirror surface of the meniscus negative lens is provided with a reflecting surface region; the incident light is reflected and refracted in the meniscus positive lens and the meniscus negative lens for multiple times, and then forms an intermediate image after passing through the plano-convex lens; the first mirror group has positive focal power, increases the numerical aperture and corrects aberration; the second mirror group and the third mirror group both have negative focal power; the intermediate image is emitted to an image plane in parallel light after passing through the second mirror group and the third mirror group, and satisfies 0.35<|R min / f|<1.5; f is the combined focal length of the meniscus positive lens and the meniscus negative lens, and R min is the minimum curvature radius of the reflecting surface. The wide-spectrum catadioptric objective has the characteristics of wide spectrum, high resolution, high numerical aperture, large field of view and long working distance simultaneously.

The application discloses an ion trap and a quantum computing device, comprising: an integrated substrate, radio frequency electrodes and direct current electrodes prepared on the integrated substrate; wherein the integrated substrate has an axial light transmission slot. The ion trap of the embodiment of the application is designed based on the integrated substrate, eliminates the split misalignment problem caused by temperature changes, and enables the ion trap to be applied to a low-temperature environment; the ion trap obtains an open axial light transmission through the open slot, has a higher numerical aperture, and increases the light transmission degree of freedom of the ion trap, thereby providing support for large-scale application of quantum computing.

This utility model relates to the field of lens technology, specifically to an optical microscope objective. Compared with similar designs, this objective has an ultra-long working distance (working distance greater than 6.10 mm) and a large numerical aperture (numerical aperture greater than or equal to 0.75), and is simple to manufacture, which can greatly reduce the actual production cost of the objective. The first group uses two sets of cemented doublet lenses and one set of lenses, which is beneficial for controlling field curvature and eliminating chromatic aberration; the second group uses two sets of cemented doublet lenses and two sets of cemented triplets lenses, which is beneficial for eliminating axial chromatic aberration of the system; the third group has at least three meniscus single lenses, which can be used to significantly increase the numerical aperture.

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.