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3 results about "Cover slip" patented technology
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A cover slip, coverslip or cover glass is a thin flat piece of transparent material, usually square or rectangular, about 20 mm wide and a fraction of a millimetre thick, that is placed over objects for viewing with a microscope. The object is usually held between the cover slip and a somewhat thicker microscope slide, which rests on the microscope's stage or slide holder and provides the physical support for the object and slip. The main function of the cover slip is to keep solid specimens pressed flat, and liquid samples shaped into a flat layer of even thickness. This is necessary because high-resolution microscopes have a very narrow region within which they focus. The cover glass often has several other functions. It holds the specimen in place and protects the specimen from dust and accidental contact. It protects the microscope's objective lens from contacting the specimen and vice-versa; in oil immersion microscopy or water immersion microscopy the cover slip prevents contact between the immersion liquid and the specimen. The cover slip can be glued to the slide so as to seal off the specimen, retarding dehydration and oxidation of the specimen.
Non-oil immersion large numerical aperture microscope objective
This invention discloses a non-oil immersion large numerical aperture microscope objective, composed of a first lens group S1, a second lens group S2, a third lens group S3, and a fourth lens group S4. The total length (Lob) of the four lens groups is ≤50mm, and the focal length (EFL) of the microscope objective is... ob The focal length EFL of the first lens group S1 S1 The focal length EFL of the second lens group S2 S2 The focal length EFL of the third lens group S3 S3 The focal length EFL of the fourth lens group S4 S4 Satisfying: -3.40 ≤ EFL S1 / EFL ob ≤-3.90, 5.0≤EFL S2 / EFL ob ≤9.0, 8.0≤EFL S3 / EFL ob ≤21.0, 1.30≤EFL S4 / EFLob≤1.75, HI / EFLob≤0.139, where HI is the height of the observed object. The second lens group S2 can move along the optical axis. Its advantage is that the numerical aperture of the objective lens can be ≥0.95 without oil immersion. By adjusting the distance between the objective lens elements, the imaging blur caused by the processing error of the coverslip can be corrected, and the difference caused by the thickness of the coverslip can be compensated. It has a good effect on correcting chromatic aberration without using special optical materials such as DOE.
Owner:NINGBO YONGXIN OPTICS
A slice observation table for pathological dissection
This invention discloses a slide observation stage for pathological anatomy, belonging to the field of medical equipment. It includes a support component comprising a base detachably connected to the arm of a microscope, a support seat slidably mounted vertically on the base, and a support platform slidably connected horizontally to the top of the support seat. Before observing the sealed pathological slides using this observation stage, the top of the coverslip is wiped clean with alcohol. This effectively removes dust adhering to the surface of the coverslip and simultaneously sterilizes bacteria on the surface. This effectively prevents dust and bacteria from the ambient air from adhering to the surface of the coverslip during the examination process, thus avoiding obstruction of the pathological tissue beneath the coverslip during subsequent observation and facilitating the observation of the pathological slides.
Full-automatic fluorescent staining microscopic image scanning and analyzing system
This invention relates to the field of medical device technology and discloses a fully automated fluorescence staining microscopic image scanning and analysis system, including a fully automated fluorescence staining imager. A coverslip compartment is fixedly connected to the top outer wall of the fully automated fluorescence staining imager for storing coverslips. A cover-applying module is provided on the top of the fully automated fluorescence staining imager. Utilizing the curvature formed by the coverslip during slide removal, combined with a rotating pressing action, when the curved coverslip moves above the slide and presses down, the lowest point of its curved surface preferentially forms point contact with the sample to be tested. As the rotating frame continues to rotate, the coverslip is gradually pressed and flattened from the contact point to both sides, allowing the sample to be tested to be evenly spread radially outward from the center, effectively shortening the air escape path and avoiding air bubble residue. Simultaneously, the internal elastic potential energy of the coverslip is released smoothly, preventing the coverslip from breaking due to localized stress concentration, thereby improving the sealing quality.
Owner:德州国科医疗科技有限公司