Optics combination teaching aid

The utility model discloses an optics combination teaching aid, including big lens cone and little lens cone, big lens cone coincides with little lens cone axis each other, big lens cone left end is provided with rotatory lens means, be provided with the slot in the little lens cone, insert the lenslet in the slot, the lenslet upper end is provided with sealed rubber ring, the sealed rubber ring upper end is provided with stripping ring, rotatory lens means includes the disc main part, disc main part centre of a circle department is provided with the rotation axis, it perforates to be providedwith a plurality of lens in the disc main part, in perforating, put into by lens big lens, outside perforating, lens are provided with shading rubber turn -up, through set up the rotatory lens meansthat can rotate on big lens cone, wherein set up the lens that various models are different, the manual rotation regulation that carries on, the quick adjustment of lens carries out, adopt plug -typelenslet on the little lens