The present application relates to a kind of continuous
zoom lens, belong to the field of optoelectronic technology, solve the problem of not enough smooth, stable in continuous zooming process in prior art.A kind of continuous
zoom lens includes lens, lens
barrel,
cam,
zoom motor and gear;
Cam includes inner and outer cams, outer
cam is rotatably sleeved on inner
cam, inner cam is sleeved on zooming, compensation group lens
barrel, zooming group, compensation group lens
barrel is respectively fixed with zooming, compensation group pin;Outer cam side wall has the zooming guide slot according to zooming group outer cam curve
processing, the compensation guide slot according to compensation group outer cam curve
processing, zooming group outer cam curve and compensation group outer cam curve are the curve obtained by optimization
algorithm of
particle swarm optimization.8 times continuous zooming is realized, optical
system structure is compact, volume weight is smaller, and zooming group and compensation group are moved according to optimal curve mode, the suppression of the
maximum pressure angle of cam curve is realized, and the zooming process is smooth, stable, and the
imaging quality is good.