Optical fiber scanning device and scanning display equipment

Abstract

The invention aims to provide an optical fiber scanning device and scanning display equipment. The optical fiber scanning device and the scanning display equipment are used for improving the detectioneffect of the display equipment on the light emitting condition of an optical fiber scanner in the scanning projection process. The optical fiber scanning device comprises the optical fiber scanner,a detection light source and an optical detector; the optical fiber scanner comprises a scanning optical fiber, a feedback optical fiber and an actuator, the scanning optical fiber is fixedly arrangedon the actuator in the first direction, the part, exceeding the actuator, of the light emitting end of the scanning optical fiber forms an optical fiber cantilever, and the light emitting end of thefeedback optical fiber is fixedly arranged on the actuator; the detection light source is connected with the input end of the feedback optical fiber and used for emitting detection light, and the detection light is transmitted by the feedback optical fiber and then emitted from the light emitting end of the feedback optical fiber; and the optical detector is arranged on an emergent light path of the feedback optical fiber and used for receiving emergent light of the feedback optical fiber and processing a received optical signal into an electric signal.

Description

technical field [0001] The invention relates to the technical field of scanning display, in particular to an optical fiber scanning device and scanning display equipment. Background technique [0002] The imaging principle of optical fiber scanning projection technology is: the actuator in the optical fiber scanner drives the scanning optical fiber to move the predetermined two-dimensional scanning trajectory, and at the same time modulates the light output power of the light source, and projects the information of each pixel point of the image to be displayed to the imaging device one by one. area to form a projection screen. [0003] like figure 1 As shown, the existing optical fiber scanning projection system includes: a processor, a light source modulation module, a light source beam combining module, an optical fiber scanner, and a scanning driving circuit. The processor controls the fiber scanner to vibrate and scan by sending electrical control signals to the scanni...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual scanning work, due to interference vibration, driving fluctuation, temperature and humidity, aging fatigue and other factors, the motion track and state of the fiber scanner will deviate from the ideal mode, and it is difficult to scan light stably according to the driving signal, which may cause the display Image distortion, but there is no better detection method yet

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