Dr Bi has, however, gone further than just eliminating speckle.He notes that if the red laser light used is made redder and the blue laser light made bluer, the gamut of the projected image increases.

• 毕博士不但解决了光斑的问题，更是进一步发现，在使用的红色和蓝色激光颜色加深的情况下，投影图像的色域也随着加宽。