3results about How to "Guaranteed clear imaging" patented technology

The application relates to the technical field of optical systems, and provides a high-magnification line scanning imaging system and an imaging device, which solve the problem of small depth of field of an existing high-magnification line scanning imaging system, and comprise object surface one and object surface two, a first lens group arranged in sequence from the object side to the image side along the optical axis, the optical power of the first lens group being positive; a diaphragm; a second lens group, the optical power of the second lens group being negative, and a light splitting prism; the object surface one is imaged on the image surface one after sequentially passing through the first lens group, the diaphragm, the second lens group and the light splitting prism and being subjected to defocusing treatment; and the object surface two is imaged on the image surface two after sequentially passing through the first lens group, the diaphragm, the second lens group and the light splitting prism and being subjected to defocusing treatment. The application can expand the depth of field without assembling other devices, reasonably distribute the optical power, better balance the aberration, realize high magnification and high resolution, and guarantee clear imaging in a large range.

The invention discloses an endoscope imaging system and endoscope equipment. The endoscope imaging system sequentially comprises first window glass, a diaphragm, a lens subsystem, second window glass and a detection imaging element from an object side to an image side along an optical axis, the first window glass and the second window glass are used for protecting lenses in the lens subsystem; the detection imaging element is used for displaying an image formed by the lens subsystem; the lens subsystem sequentially comprises a first lens group and a second lens group from the object side to the image side along the optical axis; the second lens group is fixedly arranged in the inner lens cone, the inner lens cone can move back and forth in the fixed lens cone, and the first lens group is fixedly arranged in the fixed lens cone and located on the object side of the inner lens cone; the first lens group sequentially comprises a first lens with positive focal power, a first sub-lens group with negative focal power, a second sub-lens group with positive focal power and a third sub-lens group with negative focal power from the object side to the image side along the optical axis; the second lens group is a lens group with positive focal power.

An achromatic fixed-focus lens includes, from the object side to the image side, a first lens with negative optical power, an aperture stop, a second lens group with positive optical power, a third lens with positive optical power, and an imaging surface with an imaging element; the second lens group includes at least three glued lenses. The present invention achieves 4K ultra-high-definition resolution and can be used with image sensors with more than 12 million pixels, greatly improving the imaging quality, and can capture larger scene images, even if the image is enlarged, it is still clear; through a special lens matching method and surface design, and using temperature drift compensation technology, it can achieve infrared confocality from low temperature to high temperature, ensuring 24-hour clear imaging, and can capture high-contrast images even in haze environments; designing multiple glued lenses makes the image restoration extremely high, and there will be no obvious bending and distortion.