Multiple Beam Interferometer
Original Publication Date: 1979-Jul-01
Included in the Prior Art Database: 2005-Feb-20
One of the primary drawbacks to modern interferometer designs similar to the well known Michelson type is that some means of varying the optical pathlength in one arm of the interferometer is necessary. The common means of translating the mirror requires, among other things, a highly precise bearing assembly and movement mechanism as well as sophisticated control electronics. Such interferometers are not well suited to environments where severe shock, impact or acceleration are present. Such interferometers can also require frequent and tedious alignment. An interferometer is shown which eliminates many of these sensitive components and provides a rugged, low-cost modular interferometer.