What is claimed is:
1. An electron gun for a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of is greater than or equal to 0.222, where T1D, T1 denotes a thickness of the control electrode, and D denotes a diameter of an electron beam aperture of the control electrode.
2. The electron gun of claim 1, wherein the value of satisfies the condition that 0.222<0.316.
3. The electron gun of claim 1, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
4. The electron gun of claim 1, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
5. The electron gun of claim 4, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
6. The electron gun of claim 1, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000 V is applied to the screen electrode.
7. The electron gun of claim 6, wherein a voltage of approximately 600V is applied to the screen electrode.
8. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.222<0.316, where T1D, T1 denotes a thickness of the control electrode, and D denotes a diameter of an electron beam aperture of the control electrode,
wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
9. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of M is greater than or equal to 0.222, where M is the quotient of dividing T1 by DS2(AC)0.5, T1 denotes a thickness of the control electrode, A denotes an area of an electron beam aperture of the control electrode, and C denotes the circumference of the electron beam aperture of the control electrode.
10. The electron gun of claim 9, wherein the value of M satisfies the condition that 0.222M<0.316.
11. The electron gun of claim 9, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
12. The electron gun of claim 9, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
13. The electron gun of claim 12, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
14. The electron gun of claim 9, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000V is applied to the screen electrode.
15. The electron gun of claim 14, wherein a voltage of approximately 600V is applied to the screen electrode.
16. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.222M<0.316, where M is the quotient of dividing T1 by DS2(AC)0.5, T1 denotes a thickness of the control electrode, A denotes an area of an electron beam aperture of the control electrode, and C denotes the circumference of the electron beam aperture of the control electrode,
wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
17. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of k is greater than or equal to 0.11, where kT1L, T1 denotes a thickness of the control electrode, and L denotes the distance between a beam-entering surface of the control electrode and a beam-emitting surface of the screen electrode.
18. The electron gun of claim 17, wherein the value of k satisfies the condition that 0.11k<0.135.
19. The electron gun of claim 17, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
20. The electron gun of claim 17, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
21. The electron gun of claim 20, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
22. The electron gun of claim 17, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000V is applied to the screen electrode.
23. The electron gun of claim 22, wherein a voltage of approximately 600V is applied to the screen electrode.
24. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.11k<0.135, where kT1L, T1 denotes a thickness of the control electrode, and L denotes the distance between a beam-entering surface of the control electrode and a beam-emitting surface of the screen electrode, wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
25. A method of providing an electron gun with a cathode, a control electrode, a screen electrode, and a plurality of focusing electrodes, and used with a multi-media monitor, the method comprising:
decreasing a cathode spot cutoff voltage to within a range of 50-80V; and
varying the thickness of the control electrode and a diameter of an electron beam aperture.
26. The method of claim 25, wherein when the thickness of the control electrode in millimeters is T1, the diameter of the electron beam aperture of the control electrode in millimeters is D, and the quotient of dividing the thickness T1 by the diameter D is 3 (T1D), the thickness T1 of the control electrode and the diameter D of the electron beam aperture are determined such that is greater than or equal to 0.222 to offset the focusing characteristic degradation due the decreasing of the cathode spot cutoff voltage.
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 steering wheel arrangement for motor vehicles, in which the risk of injury is reduced, should a driver impact against a steering wheel in the event of a crash, the steering wheel arrangement comprising
a skeleton of the steering wheel;
spokes of the steering wheel skeleton;
a compact body of deformable, energy absorbing material, in which the spokes of the steering wheel are fixed,
wherein at least one spoke has a spoke head, which is embedded in the body of energy absorbing material, is of flat construction, and two intersecting ribs are provided on each of opposite flat sides of the spoke head.
2. A steering wheel arrangement for motor vehicles, in which the risk of injury is reduced, should a driver impact against a steering wheel in the event of a crash, the steering wheel arrangement comprising:
a skeleton of the steering wheel;
spokes of the steering wheel skeleton;
a compact body of deformable, energy absorbing material, in which the spokes of the steering wheel are fixed
wherein at least one spoke has a spoke head, which is embedded in the body of energy absorbing material, is of flat construction, has at least one rib, and the spoke head is rounded at its end and the at least one rib is likewise rounded and at an end thereof has at least virtually the thickness of the spoke head.
3. The steering wheel arrangement as claimed in claim 1 or 2, wherein metallic foam or rigid plastic foam is used as energy absorbing material.
4. The steering wheel arrangement as claimed in claim 1 or 2, wherein the body and the spokes have respective thicknesses, and the thickness of the body is a multiple of the thickness of the spokes.
5. The steering wheel arrangement as claimed in claim 1 or 2, wherein the spokes each have opposite ends and a spoke head at one of the ends, and
a hub in which the compact body of deformable, energy absorbing material is disposed with the spoke heads embedded therein.
6. The steering wheel arrangement as claimed in claim 1 or 2, wherein the steering wheel spokes have greater resistance to deformation than the body of energy absorbing material.