1. An HMD device comprising a frame, which is mountable on the head of a user, an image-generating device mounted on said frame and comprising projection optics, a connecting device and glasses for correcting an eye deficiency of the user, said glasses lacking temples and said glasses being releasably connectable with said frame by said connecting device, said glasses being arranged following said projection optics when the glasses are connected with the frame.
2. The HMD device as claimed in claim 1, comprising a connecting device that always retains the glasses in the same predetermined position when the glasses are connected with the frame.
3. The HMD device as claimed in claim 1, wherein the connecting device is structured such that the glasses are releasably engaged in the frame when the glasses are connected with the frame.
4. The HMD device as claimed in claim 1, wherein the connecting device comprises a first connecting module fixed to the frame and a second connecting module fixed to the glasses, both of said connecting modules being releasably connectable with each other.
5. The HMD device as claimed in claim 4, wherein the glasses comprise at least one spectacle lens held in a fitting and the second connecting module is mounted on said fitting.
6. The HMD device as claimed in claim 4, wherein both connecting modules are provided such that they engage in a form-locking manner when the glasses are connected with the frame.
7. The HMD device as claimed in claim 5, wherein both connecting modules are provided such that they engage in a form-locking manner when the glasses are connected with the frame.
8. The HMD device as claimed in claim 4, wherein at least one of the connecting modules contains a permanent magnet.
9. The HMD device as claimed in claim 5, wherein at least one of the connecting modules contains a permanent magnet.
10. The HMD device as claimed in claim 6, wherein at least one of the connecting modules contains a permanent magnet.
11. The HMD device as claimed in claim 7, wherein at least one of the connecting modules contains a permanent magnet.
12. A method of correcting for refractive errors of users of an HMD device, the HMD device being mountable on a user’s head by a frame comprising a frame front and temples, the frame front resting on the user’s face and the temples resting on the user’s ears and the HMD device comprising projection optics, the method comprising the steps of:
mounting lenses to compensate for the user’s refractive error in a lens supporting structure; and
releasably mounting the supporting structure to the HMD device between the user’s eyes and the projection optics.
13. The method as claimed in claim 12, further comprising the step of releasably mounting the supporting structure in a repeatable predetermined position.
14. The method as claimed in claim 12, further comprising the steps of securing a first connecting module to the HMD;
securing a second connecting module to the supporting structure; and
interconnecting the first connecting module to the second connecting module.
15. The method as claimed in claim 14, further comprising the steps of incorporating a permanent magnet into at least one of the first and second connecting modules.
16. A head mounted display device comprising:
a frame front supporting projection optics adapted to present visual images to at least one of a user’s eyes, the frame front being structured to rest on a user’s face;
temples operably connected to the frame front and structured to rest on a user’s ears;
at least one corrective lens adapted to compensate for the user’s visual deficiency, the corrective lens being supported by a connection member releasably connectable to the frame front to interpose the lens between the user’s eye and the projection optics in repeatably positionable fashion whereby the lens allows a clear view of the presented visual images.
17. The head mounted display device as claimed in claim 16, in which the connecting module comprises a first connecting module attached to the lens and a second connecting module connected to the frame front, the first connecting module being structured to complementarily mate with the second connecting module.
18. The head mounted display device as claimed in claim 17, in which the first connecting module engages the second connecting module in a form locking manner.
19. The head mounted display device as claimed in claim 17, in which at least one of the first connecting module and the second connecting module comprises a permanent magnet.
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 interface for use in a mass spectrometer, the interface comprising:
a first ion funnel comprising a first inlet and a first outlet, and a first axis between the first inlet and the first outlet; and
a second ion funnel in tandem with the first ion funnel, the second ion funnel comprising a second inlet and a second outlet, and a second axis between the second inlet and the second outlet, wherein the first axis and the second axis are offset relative to one another.
2. An interface as claimed in claim 1, wherein the offset comprises an angular offset.
3. An interface as claimed in claim 1, wherein the offset comprises a lateral offset.
4. An interface as claimed in claim 2, wherein an angle of the angular offset is at least approximately 2\xb0 and at most approximately 30\xb0.
5. An interface as claimed in claim 1, further comprising a first chamber configured to maintain a first pressure and a second chamber configured to maintain a second pressure.
6. An interface as claimed in claim 5, wherein the first ion funnel is disposed in the first chamber and the second ion funnel is disposed in the second chamber.
7. An interface as claimed in claim 6, wherein the first pressure is greater than the second pressure.
8. An interface as claimed in claim 1, further comprising ion optics disposed between the first outlet and the second inlet.
9. An interface as claimed in claim 3, wherein the first axis and the second axis are substantially parallel and the lateral offset is greater than a radius of a conductance limit between the first chamber and the second chamber and less than a radius of the second inlet of the second ion funnel.
10. A mass spectrometer, comprising:
an ion source;
a mass analyzer; and
an interface for the mass spectrometer disposed between the ion source and the mass analyzer, wherein the interface comprises: a first ion funnel comprising a first inlet and a first outlet, and a first axis between the first inlet and the first outlet; and a second ion funnel in tandem with the first ion funnel, the second ion funnel comprising a second inlet and a second outlet, and a second axis between the second inlet and the second outlet, wherein the first axis and the second axis are offset relative to one another.
11. A mass spectrometer as claimed in claim 10, wherein the offset comprises an angular offset.
12. A mass spectrometer as claimed in claim 10, wherein the offset comprises a lateral offset.
13. A mass spectrometer as claimed in claim 11, wherein an angle of the angular offset is at least approximately 2\xb0 and at most approximately 30\xb0.
14. A mass spectrometer as claimed in claim 12, wherein the first axis and the second axis are substantially parallel and the lateral offset is greater than a radius of a conductance limit between the first chamber and the second chamber and less than a radius of the second inlet of the second ion funnel.
15. A mass spectrometer as claimed in claim 10, further comprising a first chamber configured to maintain a first pressure and a second chamber configured to maintain a second pressure.
16. A mass spectrometer as claimed in claim 15, wherein the first ion funnel is disposed in the first chamber and the second ion funnel is disposed in the second chamber.
17. A mass spectrometer as claimed in claim 16, wherein the first pressure is greater than the second pressure.
18. A method of separating ions and neutral particles in a mass spectrometer, the method comprising:
providing the ions and neutral particles to an interface, comprising: a first ion funnel comprising a first inlet and a first outlet, and a first axis between the first inlet and the first outlet; and a second ion funnel in tandem with the first ion funnel, the second ion funnel comprising a second inlet and a second outlet, and a second axis between the second inlet and the second outlet, wherein the first axis and the second axis are offset relative to one another;
guiding the ions along a first axis between the first inlet and the first outlet;
guiding the ions but not the neutral particles along a second axis between the second inlet and the second outlet.
19. A method as claimed in claim 18, wherein the offset if an angular offset.
20. A method as claimed in claim 18, wherein the offset is a lateral offset.