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3 results about "Focus measure" patented technology

Focus Measure. A function to measure the relative degree of focus of an image. This function measures the relative degree of focus of an image. Several up-to-date focus measuring algorithms have been implemented and the function supports uint8 or double images.

A micro / nano CT X-ray source focal point measurement device and method

PendingCN122084660ARealize feature image positioningCorrect image deviationMaterial analysis using wave/particle radiationMagnificationMechanical engineering
This invention relates to the field of CT detection technology, and particularly to a micro / nano CT X-ray source focus measurement device and method. This application proposes a micro / nano focus measurement method based on the stacked edge method and designs a corresponding measurement device. A micro / nano focus measurement model is constructed using EGSnrc Monte Carlo simulation, analyzing the influence of different magnifications on the measurement results of 1μm and 2μm nominal focuses. It is determined that the magnification of a 1μm focus should be no less than 600 times, and the magnification of a 2μm focus should be no less than 300 times. Simultaneously, it is clarified that when the number of projected pixels of the focus on the detector is no less than 7.39 pixels, the measurement error can be controlled within 10%. Experimental verification results show that the measurement results of this application deviate from those of the JIMA card edge method by less than 1%, and the asymmetric distribution characteristics of the focus can be clearly reconstructed.
A micro / nano CT X-ray source focal point measurement device and method
A micro / nano CT X-ray source focal point measurement device and method
A micro / nano CT X-ray source focal point measurement device and method
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Owner:CHONGQING UNIV

Equipment for focusing, focus measuring and glue dispensing of camera

PendingCN121262354APretreated surfacesTelevision systemsFixed frameCamera module
The invention discloses a camera focusing, focus measuring and dispensing device which comprises a fixing frame, focus adjusting glue curing mechanisms, a lifting plate, a camera positioning mold, a lifting device and a belt conveyor, the focus adjusting glue curing mechanisms are mounted on the fixing frame, the lifting plate is connected to the lifting device, and the camera positioning mold is mounted on the lifting device. The plurality of camera positioning molds are mounted on the lifting plate and are used for positioning and lifting camera modules; the belt conveyor is arranged between the camera positioning molds and the focus adjusting glue curing mechanism and is used for conveying the camera modules; the equipment for focusing, focus measuring and glue dispensing of the camera is novel in structure, convenient to use and practical, focusing, glue dispensing and glue fixing are conducted on the camera through the focus adjusting glue curing mechanisms, meanwhile, the multiple focus adjusting glue curing mechanisms are arranged, the focusing of the camera is improved, the glue dispensing step is reduced, and the purpose of improving the production efficiency is achieved.
Equipment for focusing, focus measuring and glue dispensing of camera
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Owner:SHANGRAO LUXVISIONS INNOVATION TECH LTD

Back focus test adjusting device

ActiveCN224066315UImprove pass rateIncrease productivityTesting optical propertiesTesting MethodsMechanical engineering
The utility model belongs to the technical field of lens production equipment, and discloses back focus test adjusting equipment, which comprises a back focus measuring device used for measuring the back focus distance of a lens module; the first focusing torque measuring device is used for measuring whether the torque between the lens and the lens base is within a preset specification; the second focusing and torque measuring device is used for adjusting the depth of the lens screwed into the lens base so as to adjust the rear focus distance of the lens module; and the debugging transfer device comprises a debugging translation mechanism and a debugging clamping mechanism, the debugging clamping mechanism is used for clamping the lens module, and an execution end of the debugging translation mechanism is connected with the debugging clamping mechanism so as to drive the debugging clamping mechanism to translate along the second direction. The back focus test adjusting device provided by the utility model can automatically measure the back focus distance and the locking torque of the lens module, and adjust the back focus distance of the lens module according to the actual measurement result of the back focus measuring device, thereby improving the qualified rate and the production efficiency of the lens module.
Back focus test adjusting device
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Owner:DONGGUAN YUTONG OPTICAL TECH