1. An interchangeable lens barrel which is detachable from a camera body, the interchangeable lens barrel comprising:
a storage section for storing a first program concerning a function of the interchangeable lens barrel;
a connection section for connecting to an external inputoutput device;
a reception section for receiving a second program concerning the function of the interchangeable lens barrel from the inputoutput device through the connection section in a state where the interchangeable lens barrel is not coupled to the camera body; and
a rewriting section for replacing the stored first program with the received second program.
2. The interchangeable lens barrel according to claim 1, wherein the storage section is a nonvolatile memory.
3. The interchangeable lens barrel according to claim 1, wherein the rewriting section compares a version of the first program with a version of the second program, and replaces the first program with the second program when the version of the second program is more recent than the version of the first program.
4. The interchangeable lens barrel according to claim 1, further comprising an imaging optical system for forming an optical image of a object, wherein
each of the first and second programs includes a program for controlling driving of the imaging optical system.
5. The interchangeable lens barrel according to claim 1, further comprising an operation member for being operated by a user, wherein
the reception section is integral with the operation member.
6. The interchangeable lens barrel according to claim 5, wherein
the operation member is a photographing mode selection section operated for selecting a photographing mode, and
a fixed member containing the reception section and the photographing mode selection section is attached on an outer surface of the interchangeable lens barrel.
7. The interchangeable lens barrel according to claim 6, further comprising a vibration compensation section for changing an optical axis of the imaging optical system to compensate blurring of an image, wherein
the photographing mode includes a blurring compensation mode, in which the vibration compensation section is activated and photographing is performed.
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. An index-matching gel for use with a nanostructure optical fiber, comprising:
a polymer-based gel having at least one polymer component with a viscosity \u03b7 at 25\xb0 C. wherein 3 Pa-s\u2266\u03b7\u2266100 Pa-s, wherein the nanostructured fiber has a core with a refractive index, and wherein the gel has a refractive index within 5% of the core refractive index at an operating wavelength of the fiber.
2. The index-matching gel of claim 1, wherein 5 Pa-s\u2266\u03b7\u226650 Pa-s.
3. The index-matching gel of claim 2, wherein 5 Pa-s\u2266\u03b7\u226620 Pa-s.
4. The index-matching gel of claim 1, wherein the at least one polymer component includes a siloxane polymer.
5. The index-matching gel of claim 4, wherein the at least one polymer component has a molecular weight Mw>25,000 daltons.
6. The index-matching gel of claim 1, wherein the at least one polymer component is selected from the group of polymer components comprising: polybutenes, (meth)acrylates, acrylics, epoxies, polyesters, polyethers, polycaprolactones, polycarbonates, polybutadienes, polyurethanes, and natural hydrocarbons.
7. A mechanical splice assembly for mechanically splicing a nanostructure optical fiber with an end, comprising:
a body having a central axis, opposite front and back ends, an interior chamber between the front and back ends, and front and rear channels open to the chamber interior and open at the front and back ends;
a fiber stub having opposite front and rear ends and disposed in the front channel so that the fiber stub front end is at the body front end and the fiber stub rear end is within the interior chamber; and
an index matching gel contained in the interior chamber, the index-matching gel comprised of at least one polymer component having a viscosity \u03b7 at 25\xb0 C. such that 3 Pa-s\u2266\u03b7\u2266100 Pa-s, and wherein the index-matching gel resides between the fiber stub rear end and the nanostructure fiber end so as to provide index matching between the stub optical fiber and the nanostructure optical fiber.
8. The assembly of claim 7, wherein the stub optical fiber is a nanostructure optical fiber.
9. The assembly of claim 7, further including:
a nanostructure optical fiber having an end and a nanostructure region with voids, wherein the nanostructure optical fiber is disposed within the rear channel so that the nanostructure fiber end is interfaced with the stub fiber end and so that the index-matching gel provides index-matching between the fiber stub rear end and the nanostructure fiber end without substantially filling the voids.
10. The assembly of claim 7, further including:
a nanostructure optical fiber having an end and a nanostructure region with voids, wherein the nanostructure optical fiber is disposed within the rear channel so that the nanostructure fiber end is interfaced with the stub fiber end and so that the index-matching gel provides index-matching between the fiber stub rear end and the nanostructure fiber end, and wherein the index-matching gel migrates into the voids to a maximum depth DM as measured from the nanostructure fiber end, wherein the depth DM does not extend beyond the body back end.
11. The assembly of claim 7, wherein the at least one polymer component includes a siloxane polymer.
12. The assembly of claim 7, wherein the gel does not substantially penetrate the nanostructure optical fiber.
13. A fiber optic connector, comprising:
the mechanical splice assembly of claim 7;
a holder for holding the mechanical splice assembly, the holder having a back end portion configured to support an optical fiber cable; and
a housing that houses the holder.
14. The fiber optic connector according to claim 13, further including:
a nanostructure optical fiber cable that includes the nanostructure optical fiber having a nanostructure region with voids, wherein the cable is supported by the holder back end portion such that the nanostructure optical fiber is disposed within the rear channel with the nanostructure optical fiber end interfacing with the fiber stub end and substantially index-matched thereto by the index-matching gel.
15. The fiber optic connector according to claim 14, further including:
a boot having an end, the boot covering the channel back end and a portion of the nanostructure optical fiber cable; and
wherein the index-matching gel migrates into the voids to a depth DM as measured from the nanostructure fiber end, and wherein the depth DM does not extend beyond the boot end.
16. The mechanical splice of claim 7, wherein the body comprises a ferrule.
17. The fiber optic connector of claim 13, wherein the holder includes a ferrule.
18. A fiber optic connector having a back end, comprising:
a stub optical fiber having an end;
a field optical fiber having a nanostructure region with voids and having an end;
a splice assembly configured to interface the stub and field optical fibers together at their respective ends; and
a polymer-based index matching gel provided at the interface of the stub and field optical fibers, the gel having at least one polymer component with a viscosity \u03b7 at 25\xb0C. wherein 3 Pa-s\u2266\u03b7\u2266100 Pa-s.
19. The fiber optic connector of claim 18, wherein field optical fiber extends from the connector back end, and wherein the index-matching gel migrates into the voids to a depth DM that does not extend beyond the connector back end.