Grid fiber scanning imaging system and its control method and application

Abstract

The invention discloses a grid-type optical fiber scanning imaging system and a control method thereof. In one scanning period of an optical fiber scanner, the change rate of the slow axis displacement is changed by adjusting the slow axis driving voltage, and the output light of the light source is changed synchronously. Modulate the frequency to achieve non-uniform imaging pixel density. Correspondingly, the present invention also discloses a head-mounted display device using the grid-type optical fiber scanning imaging system, which can increase the pixel density of a specific area on the premise that the overall pixels remain unchanged, for example, increase the pixel density of the focus area of ​​the human eye, It increases the "effective pixels" subjectively felt by the human eye, making the picture clearer and richer in detail. Without the need to upgrade the hardware specifications on a large scale, the display effect is greatly improved, which can greatly improve the user experience of the head-mounted display device and improve the usability.

Description

technical field [0001] The invention relates to the field of optical fiber scanning display, in particular to a grid type optical fiber scanning imaging system and its control method and application. Background technique [0002] Compared with traditional LED, OLED, LCD and other display systems, the optical fiber scanning imaging display system has the advantages of adjustable field of view, no graininess, and better rendering color difference. However, in the existing grid format scanning optical fiber imaging system, the pixel distribution Uniformity, so the pixel density of the viewing area seen by the human eye remains unchanged. To increase the viewing pixel density, the hardware specification must be improved, and the improvement of the actual specification requires extremely high hardware requirements and costs a lot. Contents of the invention [0003] The object of the present invention is to provide a grid-type optical fiber scanning imaging system and its contro...

AI Technical Summary

Problems solved by technology

[0002] Compared with traditional LED, OLED, LCD and other display systems, the optical fiber scanning imaging display system has the advantages of adjustable field of view, no graininess, and better rendering color difference. However, in the existing grid format scanning optical fiber imaging system, the pixel distribution Uniform, so the pixel density of the viewing area seen by the human eye remains unchanged. To increase the viewing pixel density, it is necessary to increase the hardware specification, and the improvement of the actual specification requires extremely high hardware requirements and costs a lot.

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