Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

2141 results about "Focal position" patented technology

Methods and apparati for surgical navigation and visualization with microscope ("Micro Dex-Ray")

An improved system and method for macroscopic and microscopic surgical navigation and visualization are presented. In exemplary embodiments of the present invention an integrated system can include a computer which has stored three dimensional representations of a patient's internal anatomy, a display, a probe and an operation microscope. In exemplary embodiments of the present invention reference markers can be attached to the probe and the microscope, and the system can also include a tracking system which can track the 3D position and orientation of each of the probe and microscope. In exemplary embodiments of the present invention a system can include means for detecting changes in the imaging parameters of the microscope, such as, for example, magnification and focus, which occur as a result of user adjustment and operation of the microscope. The microscope can have, for example, a focal point position relative to the markers attached to the microscope and can, for example, be calibrated in the full range of microscope focus. In exemplary embodiments of the present invention, the position of the microscope can be obtained from the tracking data regarding the microscope and the focus can be obtained from, for example, a sensor integrated with the microscope. Additionally, a tip position of the probe can also be obtained from the tracking data of the reference markers on the probe, and means can be provided for registration of virtual representations of patient anatomical data with real images from one or more cameras on each of the probe and the microscope. In exemplary embodiments of the present invention visualization and navigation can be provided by each of the microscope and the probe, and when both are active the system can intelligently display a microscopic or a macroscopic (probe based) augmented image according to defined rules.
Owner:BRACCO IMAGINIG SPA

Image recording/reproducing apparatus, image pick-up apparatus, and color aberration correcting method

An image recording and reproducing apparatus, an image pickup apparatus, and a chromatic aberration correcting method capable of performing excellent correction processing of an aperture amount of an iris and a lens image height of an object in an image pickup lens are provided.
An output signal from a camera signal processing circuit 4 is selected by a switch 5 to be supplied to a chromatic aberration correction unit 6. An aperture amount of an iris 31 provided in an image pickup lens 1 and coordinates of a pixel, to which correction processing is performed, from the chromatic aberration correction unit 6 are supplied to a conversion ratio calculation unit 10. A driving state such as a zoom focal length and focal position of the image pickup lens 1 and a camera shake correction vector are supplied to the conversion ratio calculation unit 10. Then, a conversion ratio for each color is obtained to be supplied to the chromatic aberration correction unit 6. Further, a signal corrected in the chromatic aberration correction unit 6 is compressed in a data compression circuit 15 to be supplied to a recording medium in a recording and reproducing apparatus 17. A signal reproduced from the recording and reproducing apparatus 17 is decompressed in a data decompression circuit 18 to be supplied to the switch 5. Accordingly, picture-quality degradation occurring in a miniaturized image pickup lens can be corrected by processing a picked-up image signal, and excellent correction processing can be performed on an aperture amount of an iris and a lens image height of an object in the image pickup lens.
Owner:SONY CORP

System and method for preparing micro-pore array through femtosecond laser direct writing

The invention discloses a system and a method for preparing a micro-pore array through femtosecond laser direct writing. The system comprises a femtosecond vector light field generation system, a spatial filtering component, a computer and a three-dimensional mobile platform, wherein a 1/2 wave plate, a Glan-laser polarizer, a beam expander and the femtosecond vector light field generation system are arranged on an output straight light path of a femtosecond laser device in sequence; a 4f system is arranged on a light path behind a reflective pure phase spatial light modulator after a holographic phase plate is loaded; a spatial filter is arranged on a frequency spectrum surface; and positive and negative levels of diffraction light which pass through the spatial filter pass through a 1/4 wave plate respectively and are combined into a beam of laser through a Rochi grating. A material is adjusted to a focal position through the spatial filtering component, an electronic diaphragm, a focusing lens and the three-dimensional mobile platform; and the spatial light modulator, the electronic diaphragm and the three-dimensional mobile platform are connected with a computer through data lines. The device has the advantages of simple structure, convenience in operation and capabilities of preparing the micro-pore array with various patterns and improving the machining efficiency.
Owner:NANKAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products