1. Bed for providing raising support to a person lying thereon, comprising an approximately rectangular frame 1
which comprises at least two frame portions 2, which are separated from each other in the transverse direction and are connected to each other in an articulated manner
and are in each case completed to form a planar element by means of spring strips 5, woven wire fabric, or the like and
can be pivoted about a transverse axis 21, which is oriented transversely to the respective frame portion 2, from the horizontal to an inclined position characterized in that on at least one frame portion 2 there lies at least one raising region 4
which, in the deactivated state, can be integrated into the surface of the frame portion 2 and
of which the outwardly facing edge extends as far as the edge of the frame 1 and
of which the inwardly facing edge is spaced from the centre line 12 of the frame 1 extending in the longitudinal direction and
which, for activation, is pivotable about a raising axis 43, which extends parallel or obliquely to a longitudinal side 11 of the frame 1.
2. Bed according to claim 1, characterized in that at least one mattress 3 lies on the frame 1.
3. Bed according to claim 1, characterized in that the frame portions 2 are
an upper frame portion 22 for supporting the back and head regions andor
a centre frame portion 23 for supporting the buttock region andor
a lower frame portion 23 for supporting the leg region of the person reclining thereon.
4. Bed according to claim 1, characterized in that the raising regions 4 on adjoining frame portions 2 are chamfered at the mutually adjacent edges so that, on maximum pivoting of the upper frame portions 2, the raising regions are also pivotable about their maximum pivot angle in each case.
5. Bed according to claim 1, characterized in that the raising regions 4 on adjoining frame portions 2 have, on their mutually adjacent edges, telescopically shortenable longitudinal strips 41, so that, on maximum pivoting of the upper frame portions 2, the raising regions are also pivotable about their maximum pivot angle in each case
6. Bed according to claim 1, characterized in that, in the case of mutually adjoining frame portions 2, the transversely extending sections of the frame portions 2, which are in mutual contact when the frame 1 is in the horizontal position, are disposed below the surface of the frame 1.
7. Bed according to claim 6, characterized that the sections of the frame portion 2 that are in contact in a horizontal position are U-shaped.
8. Bed according to one claim 1, characterized in that at least one frame portion 2 bears a plurality of horizontal spring strips 5,
which are oriented parallel to the transverse axis 21 and
on each spring strip 5, a short strip 42 lies, which
is connected at its first end in an articulated manner to the spring strip 5 and
is connected at its second end to a longitudinal strip 41,
which extends parallel to the longitudinal side 11 and
which, when the raising region 4 is in the deactivated state, lies on the longitudinal side 11 of each frame portion 2 or in the vicinity thereof, wherein
all the articulated connections of the short strips 42, flush with the spring strips 5, form the raising axis 43 and
for activation of a raising region 4, of which the longitudinal strip 41 can be lifted from the respective frame portion 2.
9. Bed according to claim 1, characterized in that
at least one frame portion 2 andor at least one raising region 4 is designed as a surface or as a mesh, on which a plurality of vertical spring elements are uniformly distributed and fastened and
the raising region 4 along the raising axis 43 is connected in an articulated manner to the frame portion 2 and, in the deactivated state, lies on the frame portion 2.
10. Bed according to claim 9, characterized in that the vertical spring elements are connected together, in the region of the raising aid 4 and in the adjacent region of the frame portion 2, at their upwardly facing end by means of tension-pressure rods.
11. Bed according to claim 10, characterized in that the vertical spring elements are helical springs of metal or of plastic.
12. Bed according to claim 11, characterized in that the helical springs are firmly connected at the lower end to the raising region 4 or to the frame portion 2.
13. Bed according to claim 9, characterized in that the vertical spring elements consist of block elements, such as foamed plastic.
14. Bed according to claim 13, characterized in that the block elements are connected in an articulated manner to the raising region 4 or to the frame portion 2.
15. Bed according to claim 1, characterized in that a mattress 3 lies on the frame 1 and the frame portion 2 and the raising regions 4.
16. Bed according to claim 1, characterized in that the mattress 3 is cut at the boundary of the raising region 4 to the centre portion.
17. Bed according to claim 16, characterized in that the cover of the mattress is cut at the boundary between the raising region 4 and the central portion and a cover for the perpendicular walls of the cut edge of the mattress is sewn on at the cut edges.
18. Bed according to claim 1, characterized in that, in the raising region 4, inserted between the frame portion 2 and the mattress 3 is an air pillow, which has a triangular profile in the transverse direction after inflation.
19. Bed according to claim 18, characterized in that the top side of the air pillow is reinforced by rods or a mesh or a plate.
20. Bed according to claim 1, characterized in that, in the raising region 4, can be fixed at various positions by means of a detent lever with a plurality of detents.
21. Bed according to claim 1, characterized in that, in the raising region 4, can be fixed at various positions by means of a motor drive.
22. Bed according to claim 21, characterized in that the drive is
an electric motor or
a pneumatic cylinder or
a hydraulic cylinder andor
a gas pressure damper andor
a pretensioned spring.
23. Bed according to claim 22, characterized in that the drive can be supplied from an energy accumulator, which can be charged by the person in the bed by means of a pivotable lever.
24. Bed according to claim 1, characterized in that, in the drive can be activated by pushing a button on a control panel that is
fixed or
connected by cable
or connected wirelessly.
25. Bed according to claim 1, characterized in that, a frame portion 2
has two raising regions 4 and
a single drive, which can be optionally coupled to one or the other raising region 4.
26. Bed according to claim 25, characterized in that the assignment of the drives to one or both raising regions 4 can be alternated by changing the mounting of the drive or of the transmission element between the drive and raising region 4.
27. Method for raising a person in a bed according to claim 1, characterized in that
before or during the raising of the upper frame portion 22
at least one raising aid 4 is also moved from the horizontal into an inclined position.
28. Method for leaving a bed by a person reclining therein according to claim 1, characterized in that
before or during the raising of the upper frame portion 22
the raising aid 4 that is opposite the exit side is moved from the horizontal into an inclined position.
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 zoom lens system comprising:
a first lens unit having positive refractive power;
a second lens unit having negative refractive power;
a third lens unit having positive refractive power;
a fourth lens unit having positive refractive power; and
a fifth lens unit,
wherein,
the lens units are disposed in this order from an object,
when the lens positions change from the wide-angle end to the telephoto end, at least the first to fourth lens units are movable in an optical axis direction, the second lens unit moves toward an image and the third lens unit moves toward the object so that the distance between the first lens unit and the second lens unit increases and the distance between the second lens unit and the third lens unit decreases, and the fourth lens moves in the optical axis direction to compensate for a displacement of an image plane due to the movement of the lens units,
the fifth lens unit includes a negative subunit having negative refractive power and a positive subunit having positive refractive power and being disposed on the image side of the negative subunit with an air gap provided between the negative subunit and the positive subunit, the fifth lens unit being capable of shifting the image by shifting the positive subunit relative to the negative subunit in a direction substantially orthogonal to the optical axis,
a movable aperture stop is provided closer to the object than the fifth lens unit, wherein the following expression is satisfied:
0.03<\u0394Sft<0.15
where \u0394S represents the movement of the aperture stop from the wide-angle end to the telephoto end, in which the movement toward the object is positive, and ft represents the focal length at the telephoto end, and
wherein the fifth lens unit is fixed in the optical axis direction.
2. The zoom lens system according to claim 1, wherein the following expression is satisfied:
\u22121<(Ra+Rb)(Ra\u2212Rb)<\u22120.35
where Ra represents the radius of curvature of the object side surface of a lens closest to the object and within the positive subunit disposed in the fifth lens unit and Rb represents the radius of curvature of the image side surface of a lens closest to the image and within the positive subunit disposed in the fifth lens unit.
3. The zoom lens system according to claim 1 or 2,
wherein an aperture stop is provided in the vicinity of the third lens unit, and
wherein the following expression is satisfied:
0.3<DswTLw<0.4
where Dsw represents the distance from the aperture stop to the image plane at the telephoto end and TLw represents the entire length of the zoom lens system at the telephoto end.
4. The zoom lens system according to claim 3, wherein, when the lens positions change, the aperture stop and the third lens unit move together as a unit.
5. The zoom lens system according to claim 1 or 2, wherein the following expression is satisfied:
0.8<|f5n|Dn<1.3
where f5n represent the focal length of the negative subunit disposed in the fifth lens unit and Dn represents the distance from the surface of a lens of the negative subunit disposed in the fifth lens unit that is closest to the image to the surface of a lens of the positive subunit disposed in the fifth lens unit that is furthest from the image plus a back focus distance.
6. An image-pickup apparatus comprising:
a zoom lens system; and
an image-pickup element configured to convert an optical image formed by the zoom lens system into an electric signal,
wherein the zoom lens system includes,
a first lens unit having positive refractive power;
a second lens unit having negative refractive power;
a third lens unit having positive refractive power;
a fourth lens unit having positive refractive power; and
a fifth lens unit,
wherein,
the lens units are disposed in this order from an object,
when the lens positions change from the wide-angle end to the telephoto end, at least the first to fourth lens units are movable in an optical axis direction, the second lens unit moves toward an image and the third lens unit moves toward the object so that the distance between the first lens unit and the second lens unit increases and the distance between the second lens unit and the third lens unit decreases, and the fourth lens moves in the optical axis direction to compensate for a displacement of an image plane due to the movement of the lens units,
the fifth lens unit includes a negative subunit having negative refractive power and a positive subunit having positive refractive power and being disposed on the image side of the negative subunit with an air gap provided between the negative subunit and the positive subunit, the fifth lens unit being capable of shifting the image by shifting the positive subunit relative to the negative subunit in a direction substantially orthogonal to the optical axis,
a movable aperture stop is provided closer to the object than the fifth lens unit, and
the following expression is satisfied:
0.03<\u0394Sft<0.15
where \u0394S represents the movement of the aperture stop from the wide-angle end to the telephoto end, in which the movement toward the object is positive, and ft represents the focal length at the telephoto end, and
wherein the fifth lens unit is fixed in the optical axis direction.
7. The image-pickup apparatus according to claim 6, wherein the following expression is satisfied:
\u22121<(Ra+Rb)(Ra\u2212Rb)<\u22120.35
where Ra represents the radius of curvature of the object side surface of a lens closest to the object and within the positive subunit disposed in the fifth lens unit and Rb represents the radius of curvature of the image side surface of a lens closest to the image and within the positive subunit disposed in the fifth lens unit.
8. The image-pickup apparatus according to claim 6 or 7, further comprising:
a shake detecting unit configured to detect shaking of the image-pickup element;
a shake control unit configured to calculate a shake-correction angle for correcting image shaking caused by shaking of an the image-pickup element detected by the shake detecting unit and to send a correction signal for shifting the positive subunit in the fifth lens unit in a direction substantially orthogonal to the optical direction by an amount corresponding to the shake-correction angle; and
a shake driving unit configured to shift the positive subunit in a direction substantially orthogonal to the optical axis.
9. A zoom lens system comprising:
a first lens unit having positive refractive power;
a second lens unit having negative refractive power;
a third lens unit having positive refractive power;
a fourth lens unit having positive refractive power; and
a fifth lens unit,
wherein,
the lens units are disposed in this order from an object,
when the lens positions change from the wide-angle end to the telephoto end, at least the first to fourth lens units are movable in an optical axis direction, the second lens unit moves toward an image and the third lens unit moves toward the object so that the distance between the first lens unit and the second lens unit increases and the distance between the second lens unit and the third lens unit decreases, and the fourth lens moves in the optical axis direction to compensate for a displacement of an image plane due to the movement of the lens units,
the fifth lens unit includes a negative subunit having negative refractive power and a positive subunit having positive refractive power and being disposed on the image side of the negative subunit with an air gap provided between the negative subunit and the positive subunit, the fifth lens unit being capable of shifting the image by shifting the positive subunit relative to the negative subunit in a direction substantially orthogonal to the optical axis, and
an aperture stop is provided closer to the object than the fifth lens unit, wherein the fifth lens unit is fixed in the optical axis direction.
10. An image-pickup apparatus comprising:
a zoom lens system; and
an image-pickup element configured to convert an optical image formed by the zoom lens system into an electric signal,
wherein the zoom lens system includes,
a first lens unit having positive refractive power;
a second lens unit having negative refractive power;
a third lens unit having positive refractive power;
a fourth lens unit having positive refractive power; and
a fifth lens unit,
wherein,
the lens units are disposed in this order from an object,
when the lens positions change from the wide-angle end to the telephoto end, at least the first to fourth lens units are movable in an optical axis direction, the second lens unit moves toward an image and the third lens unit moves toward the object so that the distance between the first lens unit and the second lens unit increases and the distance between the second lens unit and the third lens unit decreases, and the fourth lens moves in the optical axis direction to compensate for a displacement of an image plane due to the movement of the lens units,
the fifth lens unit includes a negative subunit having negative refractive power and a positive subunit having positive refractive power and being disposed on the image side of the negative subunit with an air gap provided between the negative subunit and the positive subunit, the fifth lens unit being capable of shifting the image by shifting the positive subunit relative to the negative subunit in a direction substantially orthogonal to the optical axis, and
an aperture stop is provided closer to the object than the fifth lens unit, wherein the fifth lens unit is fixed in the optical axis direction.