Patent ID: 9563055
Date: 2017-02-07
CPC Classifications: G02B

Claim:
1. A scan frequency generation method of a Lissajous dual-axial scan component, the Lissajous dual-axial scan component configured to scan at a fast-axial resonant frequency and a slow-axial resonant frequency, the scan frequency generation method comprising: determining a fast-axial bias frequency and a slow-axial bias frequency according to the fast-axial resonant frequency and the slow-axial resonant frequency, wherein a fast-axial frequency bias is a first positive range defined by a first difference between the fast-axial bias frequency and the fast-axial resonant frequency, and a slow-axial frequency bias is a second positive range defined by a second difference between the slow-axial bias frequency and the slow-axial resonant frequency; determining a plurality of fast-axial positive integers and a plurality of slow-axial positive integers according to a system frequency, the fast-axial frequency bias and the fast-axial resonant frequency, the slow-axial frequency bias, and the slow-axial resonant frequency, according to following inequalities: wherein M is one of the plurality of fast-axial positive integers, N is one of the plurality of slow-axial positive integers, f determining an irreducible fraction according to the fast-axial positive integers and the slow-axial positive integers, the irreducible fraction being a ratio of the fast-axial bias frequency to the slow-axial bias frequency, the ratio being less than 10; and scanning by the Lissajous dual-axial scan component according to a scan trace repetition frequency and the ratio, the scan trace repetition frequency being greater than 24 Hz.