1. An illumination device comprising:
a light source;
a light guiding unit where light from the light source is supplied to one end surface, and light incident from the one end surface is propagated inside to exit from the other end surface;
an illuminating optical system that spatially separates a luminous flux output from the other end surface of the light guiding unit into a plurality of luminous fluxes and that forms, on a display element, an optical image that is formed on the other end surface of the light guiding unit;
a reflective polarizing plate that is located between the illuminating optical system and the display element and that transmits first polarized light while reflecting second polarized light different in polarized state from the first polarized light toward the illuminating optical system;
a reflecting element that is disposed at a position where the plurality of luminous fluxes are spatially separated and that reflects light reflected by the reflective polarizing plate toward the reflective polarizing plate; and
a phase plate that is located between the reflecting element and the reflective polarizing plate,
wherein the reflecting element includes a transmission region through which the plurality of luminous fluxes are transmitted, and a reflecting film that is formed in a region other than the transmission region;
a light emitting center of the light source is located on a center axis that passes through a center of gravity of both end surfaces of the light guiding unit; and
the illuminating optical system forms, on the reflecting film, a plurality of optical images that is formed on the reflective polarizing plate by the second polarized light of the plurality of luminous fluxes that passed through the transmission region.
2. The illumination device according to claim 1, wherein:
the illuminating optical system includes:
a first lens group that is located between the light guiding unit and the reflecting element and that separates the luminous flux output from the other end surface of the light guiding unit into the plurality of luminous fluxes; and
a second lens group that condenses the plurality of luminous fluxes that passed through the reflecting element on the display element; and
when seen from a direction vertical to a plane that intersects both optical axes of the first and second lens groups, the optical axis of the first lens group is shifted with respect to that of the second lens group.
3. The illumination device according to claim 2, wherein the reflecting film is formed into a striped shape and, when seen from a direction vertical to a surface of the reflecting element, a longitudinal direction of the reflecting film intersects a shifting direction of the optical axis of the first lens group with respect to that of the second lens group.
4. The illumination device according to claim 1, wherein:
the illuminating optical system includes:
a first lens group that is located between the light guiding unit and the reflecting element and that separates the luminous flux output from the other end surface of the light guiding unit into the plurality of luminous fluxes;
a second lens group that condenses the plurality of luminous fluxes that passed through the reflecting element on the display element; and
a parallel plate that is located between the reflecting element and the first lens group and that shifts an incident position of the plurality of luminous fluxes on the reflecting element; and
an optical axis of the first lens group matches that of the second lens group.
5. The illumination device according to claim 4, wherein the reflecting film is formed into a striped shape and, when seen from a direction vertical to a surface of the reflecting element, a longitudinal direction of the reflecting film intersects a shifting direction of the parallel plate.
6. The illumination device according to claim 3, wherein a width of the reflecting film is equal to or more than that of the transmission region.
7. A projection type display device comprising:
an illumination device;
a display element that is illuminated with light from the illumination device; and
a projection optical system that projects image light from the display element, wherein the illumination device includes:
a light source;
a light guiding unit where light from the light source is supplied to one end surface, and light incident from the one end surface is propagated inside to exit from the other end surface;
an illuminating optical system that spatially separates a luminous flux output from the other end surface of the light guiding unit into a plurality of luminous fluxes and that forms, on the display element, an optical image that is formed on the other end surface of the light guiding unit;
a reflective polarizing plate that is located between the illuminating optical system and the display element and that transmits first polarized light while reflecting second polarized light different in polarized state from the first polarized light toward the illuminating optical system;
a reflecting element that is disposed at a position where the plurality of luminous fluxes are spatially separated and that reflects light reflected by the reflective polarizing plate toward the reflective polarizing plate; and
a phase plate that is located between the reflecting element and the reflective polarizing plate;
and wherein the reflecting element includes a transmission region through which the plurality of luminous fluxes are transmit, and a reflecting film that is formed in a region other than the transmission region;
and wherein a light emitting center of the light source is located on a center axis that passes through a center of gravity of both end surfaces of the light guiding unit; and
the illuminating optical system forms, on the reflecting film, a plurality of optical images that is formed on the reflective polarizing plate by the second polarized light of the plurality of luminous fluxes that passed through the transmission region.
8. The illumination device according to claim 5, wherein a width of the reflecting film is equal to or more than that of the transmission region.
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 mobile storage system comprising:
a plurality of storage units at least some of which are movable toward and away from one another to define an aisle between a pair of the units;
a means on each of the movable storage units for driving said unit in two directions;
a logic system on each movable unit;
at least one motion control actuator on each movable unit for creating a signal when actuated at a movable storage unit where an aisle is desired;
said movable storage units being connected such that a signal from said motion control actuator on a movable storage unit which is to move where an aisle is desired directs a run signal to at least one unit to cause said at least one or multiple units to be driven successively away from said desired aisle; and
wherein when multiple units are moved together a motion control actuator on the unit adjacent the closing aisle is operated to move the actuated unit and the other units.
2. The mobile storage system of claim 1, wherein said logic system remembers and maintains each new open aisle width and closed aisle width after the termination of said movement.
3. The mobile storage system of claim 1, wherein said logic system retains preset maximum and minimum aisle widths.
4. The mobile storage system of claim 3, wherein said logic system considers an aisle open and refuses to return to an idle state if an aisle is left at a width greater than said preset maximum aisle width.
5. The mobile storage system of claim 3, wherein said logic system will consider an aisle closed if the aisle width is equal to or less than the preset maximum aisle width, and said logic system remembers and maintains the open aisle width.
6. The mobile storage system of claim 1, further comprising an emergency stop actuator.
7. The mobile storage system of claim 6, further comprising visual signals associated with said at least one motion control actuator and said emergency stop actuator.
8. The mobile storage system of claim 1, wherein said at least one motion control actuator comprises a first motion actuator and a second motion actuator on opposed sides of said mobile storage unit.
9. A method of opening and closing aisles among a row of mobile storage units in a mobile storage system, wherein multiple storage units may be moved in a single movement, said method comprising:
selecting an aisle to be formed by means of actuating a motion control actuator on a mobile storage unit adjacent a desired aisle to be formed;
operating a motion control actuator on a mobile storage unit adjacent an existing aisle; and
wherein said mobile storage unit adjacent said existing aisle moves to close said existing aisle, and drags any other mobile storage units between said unit adjacent said existing aisle and said selected aisle to be formed.
10. The method of claim 9, further comprising the act of programming preset maximum and minimum aisle widths into a logic system.
11. The method of claim 9, further comprising the acts of storing and maintaining said width of said aisle to be formed once said aisle to be formed is established.
12. The method of claim 9, further comprising the act of establishing a visual signal on the motion control actuators adjacent the desired aisle to be formed and adjacent an existing aisle.
13. A mobile storage system comprising:
a plurality of mobile storage units at least some of which are movable toward and away from one another to define an aisle between a pair of the units, said mobile storage units being connected such that a signal established at a single mobile storage unit can direct movement of a single mobile storage unit or multiple units to create a desired aisle; and
a logic system on each unit wherein said logic system remembers and maintains each new open aisle width and closed aisle width after the termination of a movement.
14. The mobile storage system of claim 13, further comprising at least one motion actuator on each mobile storage unit for creating said signal.
15. The mobile storage system of claim 14, wherein said at least one motion actuator comprises a first motion actuator and a second motion actuator on opposed sides of said mobile storage unit.
16. The mobile storage system of claim 14, wherein said at least one motion actuator creates the signal when actuated at a mobile storage unit where an aisle is desired and said signal is conveyed to a mobile storage unit adjacent an existing aisle to cause said mobile storage unit adjacent an existing aisle or multiple units to be driven successively away from said desired aisle; and
wherein when multiple units are moved together a motion actuator on the unit adjacent the closing aisle is operated to move the unit adjacent the closing aisle and the other units.
17. The mobile storage system of claim 13, wherein said logic system retains preset maximum and minimum aisle widths.
18. The mobile storage system of claim 17, wherein said logic system considers an aisle open and refuses to return to an idle state if an aisle is left at a width greater than said preset maximum aisle width.
19. The mobile storage system of claim 1, further comprising an emergency stop actuator.
20. The mobile storage system of claim 6, further comprising visual signals associated with said at least one motion control actuator and said emergency stop actuator.