1. A projection display device for displaying an image by projecting light beams onto a projection plane, comprising:
light sources for emitting the light beams; and
light scanning elements for scanning the emitted light beams toward the projection plane,
wherein the light beams are radiated as pulses of light corresponding to respective pixels by splitting the light beams between adjacent pixels when the light beams are being scanned.
2. The projection display device according to claim 1, wherein the light beams are plural light beams having central wavelengths of red, green, and blue colors.
3. The projection display device according to claim 2, wherein the plural light beams are combined on a single light path by a color combining element.
4. The projection display device according to claim 3, wherein the plural light beams comprise pulses of red, green, and blue light which are emitted synchronously.
5. The projection display device according to claim 2, wherein the plural light beams are incident on at least one of said light scanning elements at different angles and then are scanned.
6. The projection display device according to claim 2, wherein the plural light beams are incident at different points on at least one of said light scanning elements and are scanned.
7. The projection display device according to claim 1, wherein the pulses of light achieve tone and hue of the display image by performing pulse width modulation in a pixel clock width.
8. The projection display device according to claim 1, wherein the pulses of light achieve tone and hue of the display image by performing a pulse number modulation in a pixel clock width.
9. The projection display device according to claim 1, wherein the pulses of light achieve tone and hue of the display image by performing light intensity modulation.
10. The projection display device according to claim 1, wherein the pulses of light achieve tone and hue of the display image by being controlled independtly of each other with respect to the plurality of light beams.
11. The projection display device according to claim 1, wherein said light scanning elements scan the light beams in a horizontal scanning direction and a vertical scanning direction and display an image on the projection plane.
12. The projection display device according to claim 11, wherein at least one of said light scanning elements is a galvanometer mirror fabricated by a semiconductor process.
13. The projection display device according to claim 11, wherein at least one of said light scanning elements is a mechanically fabricated galvanometer mirror.
14. The projection display device according to claim 11, wherein at least one of said light scanning elements is a rotating polygonal mirror.
15. The projection display device according to claim 11, wherein at least one of said light scanning elements is a silicon micromechanical mirror.
16. The projection display device according to claim 11, wherein at least one of said light scanning elements is a scanning element with a gimbal structure.
17. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is an edge emitting laser.
18. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is a super-luminescent diode.
19. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is a surface emitting laser.
20. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is a light emitting diode.
21. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is a resonant-type light emitting diode.
22. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams is a laser diode pumped solid-state laser.
23. The projection display device according to claim 22, wherein said laser diode pumped solid-state laser emits wavelength converted light from one of an optical crystal, a piece of glass doped with a rare earth element or pigment, and a fiber doped with a rare earth element or pigment, the wavelength converted light being induced by semiconductor laser light.
24. The projection display device according to claim 1, wherein at least one of said light sources for emitting the light beams emits the second harmonic of laser light as a light beam.
25. The projection display device according to claim 24, wherein said light source for exciting the second harmonic of the laser light is a semiconductor laser or an LD pumped solid-state laser.
26. A projection display device for displaying an image by projecting light beams onto a projection plane, comprising:
light source means for emitting light beams; and
light scanning means for scanning the emitted light beams toward the projection plane, wherein
the light beams from said light source means are radiated as pulses of light corresponding to respective pixels by splitting the light beams between adjacent pixels,when the light beams are being scanned.
27. The projection display device according to claim 26, wherein said scanning means includes first scanning means for scanning light beams in a horizontal direction, and second scanning means for scanning light beams in a vertical direction.
28. The projection display device according to claim 27, wherein at least one of said first and second scanning means is a galvanometer mirror fabricated by a semiconductor process.
29. The scanning means according to claim 27, wherein at least one of said first and second scanning means is a mechanically fabricated galvanometer mirror.
30. The scanning means according to claim 27, wherein at least one of said first and second scanning means is a rotating polygonal mirror.
31. The scanning means according to claim 27, wherein at least one of said first and second scanning means is a silicon micromechanical mirror.
32. The scanning means according to claim 27, wherein said first and second scanning means are arranged in a gimbal structure.
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 apparatus for glueing two webs (3, 4) of packaging material for the production of liquidtight packs, in particular for liquid foods, wherein each web (3, 4) is covered at least at one side with a liquid-tight adhesive layer (58, 65) which can be activated by heat, comprising
clamping means (5, 21, 27) for clamping the material webs (3, 4) fast,
a cutting unit (11) for applying an inclined cut (16) extending substantially transversely with respect to the material web (3, 4), and
a welding unit (30) for applying heat and pressure for glueing the material webs (3, 4) along an adhesive strip (29), characterised in that the welding unit (30) has a slider (31) which is displaceable along a transverse rail (28) substantially transversely with respect to the direction of travel (9) of the material web (3, 4) and on which are arranged a heating means (33) and therebehind in the direction of displacement (20) a pressure roller (38):
2. Apparatus according to claim 1 characterised in that a cutting blade (40) is arranged on the side opposite to the pressure roller (38) with respect to the heating means (33).
3. Apparatus according to claim 1 or claim 2 characterised in that arranged on the slider (31) beside the pressure roller (38) is a guide element (41) for lifting the material web (34) along its transverse edge (18) during the displacement of the slider (31).
4. Apparatus according to one of claims 1 to 2 characterised in that the heating means (33) has a hot air element (34), a transfer tube (35) and a hot air nozzle (36), preferably in the form of a wide-slot nozzle.
5. Apparatus according to one of claims 1 to 2 characterised in that the welding unit (30) and the transverse rail (28) can be raised and lowered in the lifting direction (8) substantially perpendicularly to the direction of travel (9) of the material web (3, 4) and perpendicularly to the direction of displacement (20) of the slider (30).
6. Apparatus according to one of claims 1 to 2 characterised in that fixed under the transverse rail (28) are a first clamping bar (27) and at a spacing therebeneath a second clamping bar (27).
7. Apparatus according to one of claims 1 to 2 characterised in that the pressure in the production of the adhesive strip (29) is produced by the pressure roller (38) and a rubber pressure member (50) disposed in opposite relationship therewith, wherein the rubber pressure member (50) is in the form of a bar which extends in parallel relationship with the transverse rail (28) and which has roof-like inclined surfaces (51, 52).
8. Apparatus according to claim 7 characterised in that the contact line of the pressure roller (38) against the rubber pressure member (50) is on an inclined surface.
9. Apparatus according to one of claims 1 to 2 characterised in that the clamping means (5, 23, 24; 27) for clamping the material webs (3, 4) fast have a front (21), a central (5) and a rear clamping device (27), arranged in the direction of travel (9) of the material web (3, 4).
10. Apparatus according to one of claims 1 to 2 characterised in that the transverse rail (28) of the welding unit (30) and the clamping bars (7, 23, 24; 27) extending in parallel relationship with the transverse rail (28), or clamping beams of the clamping means, are set at an angle (a) relative to the direction of travel (9) of the material webs (3, 4) of 60\xb0 to 90\xb0, preferably 70\xb0 to 80\xb0, and particularly preferably 85\xb0.