Method for improving face array frame transfer CCD working frame frequency

An area array and frame rate technology, applied in the field of high frame rate solutions, can solve problems such as increased signal bandwidth, occupation of CCD exposure time, and increased difficulty in developing signal processing circuits, so as to reduce smearing problems, reduce signal processing difficulty, The effect of long effective exposure time

Inactive Publication Date: 2008-03-12
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If all the redundant M×(M-N) elements are read out, it will not only take up the exposure time of the CCD, but also increase the signal bandwidth of the system and increase the difficulty of developing the signal processing circuit.

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  • Method for improving face array frame transfer CCD working frame frequency
  • Method for improving face array frame transfer CCD working frame frequency
  • Method for improving face array frame transfer CCD working frame frequency

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Embodiment Construction

[0023] Now in conjunction with accompanying drawing, the invention is described in detail:

[0024] A better embodiment of the present invention is given below according to Fig. 1-2, Fig. 4 to Fig. 9-4.

[0025] As shown in Fig. 5-1 to Fig. 6, the shading plate 1 is composed of a cantilever 101, a cantilever 102 and an effective shading surface 103 connecting the two cantilever 101, 102 in the center, which is divided into a shading surface and an installation mating surface of the cantilever 101 and the cantilever 102. Effect is: 1), in the installation process, the light-shielding surface faces the photosensitive surface 2 of CCD and avoids the contact of effective light-shielding surface 103 due to gravity, causing damage to CCD photosensitive surface 2; 2), cantilever 101 and cantilever 102 Another function is to increase the contact area between the light shielding plate and the CCD structure 3 and improve the bonding strength between the light shielding plate 1 and the C...

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Abstract

This invention relates to a method for an array to increase the CCD working frame frequency of frame transfer, which divides a MXM elementary image sensitive zone of a MXM array into a MX(M-N) elementary dimming zone and a MXN elementary exposing zone and utilizes a visor to block the CCDMX(M-N) image elements to reduce the frame transfer time and only reads out MXN image elements serially to reduce the frame period and increase the working frame frequency.

Description

Technical field: [0001] The invention relates to a method for increasing the operating frequency of an area array CCD, in particular to a solution to high frame frequency of an area array CCD used in a space-borne hyperspectral imager. Background technique: [0002] The area array CCD is the information acquisition component in the push-broom hyperspectral imager. The flying platform completes the scanning and imaging of the space dimension, and the solid self-scanning mechanism of the area array CCD completes the scanning and reading of the spectral dimension. On a spaceborne hyperspectral imager with a speed of several kilometers per second relative to the ground, in order to obtain a sufficiently high ground resolution, the CCD needs to work at a frame rate of up to hundreds of frames per second. At present, the high frame frequency area array CCD devices provided by CCD manufacturers are shown in Figure 1-1, which are basically M×M elements. In the push-broom hyperspectr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/148H04N1/028H04N5/335
Inventor 王跃明薛永祺王建宇刘银年黄健王欣
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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