1. A rotor comprising:
a rotating shaft having a depression formed in a peripheral surface of said rotating shaft and provided rotatably about a rotational axis line;
a rotor core having a hole where said rotating shaft can be received, and a protrusion formed on an inner surface of said rotor core defining said hole, said protrusion being fittable in said depression; and
a stress relaxation groove formed at a position adjacent to said protrusion, in the inner surface of said rotor core defining said hole, said stress relaxation groove being depressed away from a peripheral surface of said rotating shaft,
the inner surface of said rotor core defining said hole being formed in a shape of an arc centered at said rotational axis line,
a bottom surface of said stress relaxation groove located radially outward in said rotor core, included in an inner surface of said rotor core defining said stress relaxation groove, having an arc portion centered at said rotational axis line defining an inner surface of said hole, and
said stress relaxation groove including a first inner side surface continuing from one end of said bottom surface such that said first inner side surface continues from said bottom surface and continues from a side surface of said protrusion, and a second inner side surface continuing from the other end of said bottom surface such that said second inner side surface continues from said bottom surface and continues from the inner surface of said hole.
2. The rotor according to claim 1, wherein
said first inner side surface and said second inner side surface are opposite to each other in the circumferential direction,
said second inner side surface includes a sidewall arc portion continuing from said bottom surface, and a continuation wall continuing from said sidewall arc portion and continuing from the inner surface of said rotor core defining said hole, and
said continuation wall extends in the radial direction of said rotor core.
3. The rotor according to claim 1, wherein
said stress relaxation groove is formed in the inner surface of said rotor core on either side of said protrusion.
4. A rotating electric machine having the rotor as recited in claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A spectroscopic system comprising:
an optical filter module comprising one or more optical interference filters configured to receive electromagnetic radiation from an electromagnetic radiation source, the one or more filters comprising a plurality of multiplexed bandpass regions configured to simultaneously transmit multiple wavelength bands of electromagnetic radiation through the filter module; and
an optical detector configured to receive the multiple wavelength bands of electromagnetic radiation simultaneously transmitted through the filter module and to generate one or more electrical signals indicative of electromagnetic radiation intensity as a function of wavelength,
wherein movement of the optical filter module enables capture, by the optical detector, of a distinct wavelength sweep for each of the plurality of multiplexed bandpass regions.
2. The spectroscopic system of claim 1, wherein the filter module comprises an interference filter comprising multiple bandpass regions.
3. The spectroscopic system of claim 1, wherein the filter module comprises a plurality of interference filters which individually or collectively comprise multiple bandpass regions.
4. The spectroscopic system of claim 1, wherein the optical filter module is configured to provide adjustment of the incident angle of the electromagnetic radiation from the electromagnetic radiation source onto the one or more optical filters.
5. The spectroscopic system of claim 4, wherein the optical filter module comprises a rotatable filter assembly to provide the incident angle adjustment.
6. The spectroscopic system of claim 5, wherein the rotatable filter assembly comprises a position detector to produce at least a first signal comprising a series of digital pulses corresponding to the angular position of the rotatable filter assembly.
7. The spectroscopic system of claim 1, further comprising:
a memory for storing code that defines a set of instructions; and
a processor for executing the set of instructions to identify one or more species present in a sample from which the electromagnetic radiation emanates or through which the electromagnetic radiation passes prior to reception by the optical detector.
8. The spectroscopic system of claim 7, wherein the processor is configured to execute the set of instructions to process data corresponding to the electromagnetic radiation intensity measured by the detector over the multiple wavelength bands, thereby identifying one or more species present in the sample.
9. The spectroscopic system of claim 1, wherein the optical detector is configured to receive the multiple wavelength bands of electromagnetic radiation after transmission through both the filter module and a sample being measured.
10. The spectroscopic system of claim 1, further comprising a sample cell configured to contain a sample through which the electromagnetic radiation passes or from which the electromagnetic radiation emanates prior to reception by the optical detector.
11. The spectroscopic system of claim 10, wherein the sample cell is located upstream of the optical filter module.
12. The spectroscopic system of claim 10, wherein the sample cell is located downstream of the optical filter module.
13. The spectroscopic system of claim 1, wherein the optical detector, in conjunction with the optical filter module, is configured to generate one or more electrical signals indicative of electromagnetic radiation intensity over a sweep of wavelengths within each of the multiple wavelength bands.
14. The spectroscopic system of claim 5, wherein the rotatable filter assembly comprises at least four multiplexed bandpass regions on a single rotatable filter assembly with a single rotation axis.
15. The spectroscopic system of claim 1, further comprising the electromagnetic radiation source.
16. The spectroscopic system of claim 15, wherein the electromagnetic radiation source is a producer of at least one member selected from the group consisting of visible light, infrared light, and ultraviolet light.
17. The spectroscopic system of claim 1, wherein the movement of the optical filter module is a member selected from the group consisting of a continuous rotation about a single rotation axis, a back-and-forth tilt rotation about the axis, and a step-scan rotation about the axis.
18. The spectroscopic system of claim 17, wherein the movement is a rotation that covers an angular distance sufficient to span the corresponding wavelength sweep for each of the plurality of multiplexed bandpass regions.
19. The spectroscopic system of claim 18, wherein the angular distance is between 60 degrees and 120 degrees.