Patent ID: 8643961

Claim:
An optical device, comprising: a lens module; a case structure partially sheltering said lens module; and an optical adjusting mechanism comprising: a first adjusting member disposed on said lens module, and comprising a first interference transmission structure; a second adjusting member movably connected with said case structure, and comprising a second interference transmission structure; and an elastic element arranged between said case structure and said second adjusting member, wherein in response to a movement of said lens module, said elastic element elastically urges against said second adjusting member so that said second adjusting member is movable within a predetermined distance range, and said second interference transmission structure of said second adjusting member presses against and engages with said first interference transmission structure of said first adjusting member, wherein once said second adjusting member is moved, said first adjusting member is synchronously moved so that optical parameters of said lens module are adjusted through the first adjusting member.