A High Speed ​​Double Pulse Image Exposure Method Based on Direct Control of CCD Electrodes

An exposure method and electrode technology, which are used in image communication, color TV parts, TV system parts, etc. Design difficulty and complexity, maintain imaging performance and efficiency, and ease of use

Active Publication Date: 2020-04-07
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-speed double-width pulse image exposure method based on the direct control of CCD electrodes, which solves the problems that existing high-speed camera systems cannot simultaneously have high speed, high resolution, high imaging performance, and large format.

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  • A High Speed ​​Double Pulse Image Exposure Method Based on Direct Control of CCD Electrodes
  • A High Speed ​​Double Pulse Image Exposure Method Based on Direct Control of CCD Electrodes
  • A High Speed ​​Double Pulse Image Exposure Method Based on Direct Control of CCD Electrodes

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Embodiment

[0031] The present invention is a high-speed double-width pulse image exposure method based on direct control of CCD electrodes, image 3 It is a schematic diagram of the macro arrangement of pixels and electrodes of a CCD with inter-row transfer, and simplifies the specific structure of the electrodes and a more detailed distribution diagram, where φe represents the exposed driving electrode, φSH represents the transfer electrode, and φsl and φs2 represent the Multi-level transmission electrodes, in which φSH, φs1, φs2 electrodes are opaque, the basic principle of signal charge generation and transmission in CCD is as follows: when φe is effective, photoelectrons generated by incident light will gather under it and form a signal Charge packet, when φe is invalid, the signal charge packet gathered under it will scatter and disappear, thus losing the signal. When φe changes from valid to invalid and φSH changes from invalid to valid at the same time, the signal charge packet wi...

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Abstract

The invention discloses a high-speed double-width pulse image exposure method based on direct control of CCD electrodes. The light-emitting pulse image passes through an imaging lens and is then imaged on a CCD camera; Design a transfer and transmission driving sequence in the extremely short invalid time in the middle of the driving pulse, and use the function of the transfer electrode to isolate the signal charge packet to isolate the signal charge packet in the later period of the invalid period of the exposure pulse, so as to achieve the signal generated by the two exposures. The charge packet is a distinguishable effect, and it satisfies the normal transfer and transmission of the signal charge packet during the invalid period of the exposure pulse, and then obtains an ultra-high time-resolved imaging capability of a double pulse image. The present invention does not have the compression effect of the image intensifier on the dynamic range of the signal and the influence of additional noise, maximizes the imaging performance of the CCD itself, and satisfies higher scientific imaging requirements.

Description

technical field [0001] The invention relates to the field of image exposure control of framing cameras in ultra-high-speed photography technology, in particular to a high-speed double-frame pulse image exposure method based on direct control of CCD electrodes. Background technique [0002] In the ultra-high-speed photography technology and system, a high-speed framing camera is usually used to achieve ultra-high-speed photography frequency, so a high-speed framing camera is an essential device for realizing high-speed photography. Generally speaking, there are two main types of high-speed framing cameras in the field of ultra-high-speed photography. One is composed of a beam-splitting prism or a beam-splitting pyramid, multiple cameras with high-speed shutter control functions, and a timing control system. The photographing frequency of the camera can be very high; the other is a high-speed digital camera, and its operating frequency is relatively low under a certain resolut...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N5/351H04N5/235
CPCH04N23/70H04N25/50
Inventor江孝国杨兴林李洪杨国君蒋薇王远张小丁龙全红李一丁张卓
OwnerINST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS