1. Apparatus comprising a plurality of resonator structures including a pair of split masses suspended by suspension flexures, wherein each split mass includes two lobes interconnected with a flexure that allows the lobes to rotate slightly as they resonate so as to reduce longitudinal stresses in the suspension flexures.
2. Apparatus according to claim 1, wherein the pair of split masses are interconnected through a plurality of levers so as to resonate in anti-phase with one another, wherein the rotation of the lobes reduces longitudinal stresses in the levers.
3. Apparatus according to claim 2, wherein the plurality of levers transform the coupled motion of the lobes from co-linear motion to parallel motion.
4. Apparatus according to claim 1, wherein each lobe includes a plurality of drive fingers interdigitated with a corresponding array of fixed drive fingers affixed to a substrate.
5. Apparatus according to claim 1, wherein each lobe comprises at least one notch for electronic quadrature suppression.
6. Apparatus according to claim 2, wherein the plurality of resonator structures are suspended within an inner perimeter of a frame and wherein the resonator structures are mechanically coupled to produce substantially a single resonance frequency so as to restrict transfer of inertial forces to the frame.
7. Apparatus according to claim 6, wherein each of the plurality of levers is coupled at one end to the frame and at another end to a different one of the lobes, and wherein each lever has pivots, defined at the points of attachment to the frame and the lobe by the intersection of the axes of at least two orthogonal flexures, to ensure that the attachment point cannot translate with respect to the lever.
8. Apparatus according to claim 2, wherein each of the levers includes a plurality of lever fingers interdigitated with corresponding fingers affixed to an underlying substrate for at least one of driving the lever and sensing position of the lever.
9. Apparatus according to claim 8, wherein each of the levers moves with an arcuate motion, and wherein the lever fingers are disposed at varying angles so as to maintain substantially equal distances from said corresponding fixed fingers during movement of the levers.
10. Apparatus according to claim 1, wherein the plurality of resonator structures are micromachined from a single wafer.
11. Apparatus comprising a plurality of resonator structures including a first pair of masses coupled through a first flexure and a second pair of masses coupled through a second flexure, each mass suspended by a suspension flexure, wherein the first and second flexures allow the masses to rotate slightly as they resonate so as to reduce longitudinal stresses in the suspension flexures.
12. Apparatus according to claim 11, wherein the first and second pairs of masses are interconnected through a plurality of levers so as to resonate in anti-phase with one another, wherein the rotation of the masses reduces longitudinal stresses in the levers.
13. Apparatus according to claim 12, wherein the plurality of levers transform the coupled motion of the masses from co-linear motion to parallel motion.
14. Apparatus according to claim 11, wherein each mass includes a plurality of drive fingers interdigitated with a corresponding array of fixed drive fingers affixed to a substrate.
15. Apparatus according to claim 11, wherein each mass comprises at least one notch for electronic quadrature suppression.
16. Apparatus according to claim 12, wherein the plurality of resonator structures are suspended within an inner perimeter of a frame and wherein the resonator structures are mechanically coupled to produce substantially a single resonance frequency so as to restrict transfer of inertial forces to the frame.
17. Apparatus according to claim 16, wherein each of the plurality of levers is coupled at one end to the frame and at another end to a different one of the masses, and wherein each lever has pivots, defined at the points of attachment to the frame and the mass by the intersection of the axes of at least two orthogonal flexures, to ensure that the attachment point cannot translate with respect to the lever.
18. Apparatus according to claim 12, wherein each of the levers includes a plurality of lever fingers interdigitated with corresponding fingers affixed to an underlying substrate for at least one of driving the lever and sensing position of the lever.
19. Apparatus according to claim 18, wherein each of the levers moves with an arcuate motion, and wherein the lever fingers are disposed at varying angles so as to maintain substantially equal distances from said corresponding fixed fingers during movement of the levers.
20. Apparatus according to claim 11, wherein the plurality of resonator structures are micromachined from a single wafer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
Having thus described the invention, what is claimed and desired to be secured by letters patent is:
1. An interferometric arrangement for determining the transit time distribution of light in a sample having a light source whose light is supplied to a sample to be examined, in which the light returning from the sample is supplied by means of a light waveguide to a detector with downstream evaluating device, and characterized in that the light returning from the sample and guided in the light waveguide is split into two parts which are superimposed and supplied to the optical detector.