1. An oilfat composition comprising 60 to 100 wt. % of a diglyceride, wherein said diglyceride has, as fatty acid constituents thereof, 15 to 90 wt. % of an 3-unsaturated fatty acid having less than 20 carbon atoms and a cis 3-unsaturated fatty acid(cis 6-unsaturated fatty acidsaturated fatty acidtrans unsaturated fatty acid) at a weight ratio of 1 to 6.
2. The oilfat composition according to claim 1, wherein said 3-unsaturated fatty acid is -linolenic acid.
3. The oilfat composition according to claim 1 or 2, wherein said diglyceride has, as the fatty acid constituents thereof, 10 to 60 wt. % of an 9-unsaturated fatty acid.
4. The oilfat composition according to any one of claims 1 to 3, which comprises 65 to 99 wt. % of said diglyceride, 0.1 to 4 wt. % of a monoglyceride, 0.1 to 34.9 wt. % of a triglyceride and 1.5% or less of a free fatty acid (salt), wherein said diglyceride has, as fatty acid constituents thereof, 20 to 80 wt. % of -linolenic acid, 10 to 60 wt. % of oleic acid, 2 to 50 wt. % of an 6-unsaturated fatty acid, 70 to 100 wt. % of an unsaturated fatty acid and a cis 3-unsaturated fatty acid(cis 6-unsaturated fatty acidsaturated fatty acidtrans unsaturated fatty acid) at a weight ratio of 1.2 to 5; the triglyceride has, as a fatty acid constituent thereof, 70 to 100% of an unsaturated fatty acid; and the content of a polyunsaturated fatty acid having at least 4 carbon-carbon double bonds is 5 wt. % or less based on all the fatty acid constituents of the oilfat composition.
5. The oilfat composition according to any one of claims 1 to 3, which comprises 70 to 95 wt. % of said diglyceride, 0.1 to 2 wt. % of a monoglyceride, 2 to 29.9 wt. % of a triglyceride and 1 wt. % or less of a free fatty acid (salt), wherein said diglyceride has, as fatty acid constituents thereof, 30 to 70 wt. % of -linolenic acid, 10 to 50 wt. % of oleic acid, 5 to 40 wt. % of an 6-unsaturated fatty acid, 80 to 100 wt. % of an unsaturated fatty acid and a cis 3-unsaturated fatty acid(cis 6-unsaturated fatty acidsaturated fatty acidtrans unsaturated fatty acid) at a weight ratio of 1.4 to 4; the triglyceride has, as a fatty acid constituent thereof, 80 to 100 wt. % of an unsaturated fatty acid; and the content of a polyunsaturated fatty acid having at least 4 carbon-carbon double bonds is 2% or less based on all the fatty acid constituents of the oilfat composition.
6. The oilfat composition according to any one of claims 1 to 3, which comprises 75 to 92 wt. % of said diglyceride, 0.1 to 1.5 wt. % of a monoglyceride, 6 to 24.9 wt. % of a triglyceride and 0.5 wt. % or less of a free fatty acid (salt), wherein said diglyceride has, as fatty acid constituents thereof, 40 to 65 wt. % of -linolenic acid, 12 to 30 wt. % of oleic acid, 10 to 30 wt. % of an 6-unsaturated fatty acid, 90 to 100 wt. % of an unsaturated fatty acid and a cis 3-unsaturated fatty acid(cis 6-unsaturated fatty acidsaturated fatty acidtrans unsaturated fatty acid) at a weight ratio of 1.5 to 3; the triglyceride has, as a fatty acid constituent thereof, 90 to 100% of an unsaturated fatty acid; and the content of a polyunsaturated fatty acid having at least 4 carbon-carbon double bonds is 0 based on all the fatty acid constituents of the oilfat composition.
7. The oilfat composition according to any one of claims 1 to 6, which further comprises a phytosterol in an amount of 0.05 wt. % or greater.
8. A food comprising the oilfat composition as claimed in any one of claims 1 to 7.
9. A feed comprising the oilfat composition as claimed in any one of claims 1 to 7.
10. A pharmiaceutical comprising the oilfat composition of as claimed in any one of claims 1 to 7.
11. The food according to claim 8, which is an oil-in-water type oilfat-containing food.
12. The food according to claim 8, which is a water-in-oil type oilfat-containing food.
13. The food according to claim 8, which is a pocket-size oilfat-containing food.
14. The food according to claim 8, which is a bakery food.
15. In a method of preparing a food composition comprising a far or oil, the improvement comprising preparing said food composition with the oilfat composition of claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. Device for deflecting a beam, comprising:
an adjustable first beam deflection unit which has a deflection point at which the beam is deflected; and
a rotational symmetric mirror arrangement with a mirror surface which images the deflection point onto a destination point;
wherein the mirror arrangement is rotationally-symmetrical over at least a defined range of deflection angles, the deflection point and the destination point being located at least near the axis of rotational symmetry of the mirror arrangement.
2. Device as claimed in claim 1, wherein the first beam deflection unit is formed by a first mirror which is turnable around an axis of rotation.
3. Device as claimed in claim 2, further comprising a second adjustable beam deflection unit for deflecting the beam at the destination point.
4. Device as claimed in claim 3, wherein the second beam deflection unit is formed by a mirror which is turnable around an axis of rotation.
5. Device as claimed in claim 4, wherein the axis of rotation of the second mirror is perpendicular to the axis of rotation of the first mirror.
6. Device as claimed in claim 2, wherein the axis of rotation of the first mirror is offset parallel to the axis of rotational symmetry of the mirror arrangement.
7. Device as claimed in claim 6, wherein the axis of rotation of the first mirror runs through the center of gravity.
8. Device as claimed in claim 2, wherein the axis of rotation of the first mirror coincides with the axis of rotational symmetry of the mirror arrangement.
9. Device as claimed in claim 8, wherein the axis of rotation of the first mirror lies in the mirror surface.
10. Device as claimed in claim 4, wherein the mirror surface of at least one of the first and second mirror are planar.
11. Device as claimed in claim 1, wherein the axis of rotational symmetry of the mirror arrangement is arranged perpendicular to a incident beam from a beam source.
12. Device as claimed in claim 1, wherein the axis of rotational symmetry of the mirror arrangement is arranged along a incident beam from a beam source.
13. Device as claimed in claim 12, wherein the first beam deflection unit is formed by a first mirror which is turnable around an axis of rotation; wherein the axis of rotation of the first mirror is identical to the axis of rotational symmetry of the mirror arrangement and the first mirror is inclined by 45 relative to said axis of rotation.
14. Device as claimed in claim 1, wherein the mirror arrangement is afocal.
15. Device as claimed in claim 14, wherein the mirror arrangement is constructed to cause portions of the beam incident on and emergent from the mirror arrangement to lie in parallel planes.
16. Device as claimed in claim 15, wherein the beam incident on the mirror arrangement is parallel in an opposite direction and laterally offset relative to the beam emergent from the mirror arrangement.
17. Device as claimed in claim 1, wherein the mirror arrangement has a continuous mirror surface.
18. Device as claimed in claim 17, wherein the mirror surface of the mirror arrangement is mirror-symmetrical with respect to a plane which is perpendicular to the axis of rotational symmetry of the mirror arrangement.
19. Device as claimed in claim 1, wherein the mirror surface of the mirror arrangement comprises two segments which are separate from one another.
20. Device as claimed in claim 19, wherein the mirror surface of the mirror arrangement is mirror-symmetrical with respect to a plane which is perpendicular to the axis of rotational symmetry of the mirror arrangement.
21. Device as claimed in claim 1, wherein the mirror surface of the mirror arrangement is mirror-symmetrical with respect to a plane which is perpendicular to the axis of rotational symmetry of the mirror arrangement; and wherein the deflection point and the destination point are mirror-symmetrical with respect to the plane of symmetry of the mirror surface of the mirror arrangement.
22. Device as claimed in claim 21, wherein the mirror surface of the mirror arrangement is formed by at least a segment of a parabolic torus which is defined by a parabola rotated around the axis of rotational symmetry of the mirror arrangement.
23. Device as claimed in claim 1, wherein the beam is a light beam.
24. Device as claimed in claim 17, wherein other optical components are arranged in a path of the beam between a first reflection on the mirror surface and a second reflection on the mirror surface passes.
25. Device as claimed in claim 19, wherein other optical components are arranged in a path of the beam between a first reflection on the mirror surface and a second reflection on the mirror surface passes.
26. Process for deflection of a beam by means of rotation of a mirror surface of a planar mirror from a middle position, comprising the steps of setting a location of an axis of rotation of the planar mirror with respect to the planar mirror which lies outside the mirror surface, determining the location of the axis of rotation with respect to the beam based on the fact that, for different points of incidence of the beam on the mirror surface in the middle position, for certain angles of rotation of the mirror, intersection points occur between the rearward extension of the beam which has been reflected at one of these angles of rotation and the rearward extension of the beam which has been reflected in the middle position, thereby obtaining sets of intersection points for each point of incidence with the beam being reflected in the middle position, and determining from the sets of intersection points obtained, that set of intersection points which shows a minimum variation of intersection points with the angle of rotation with respect to a suitable criterion, and choosing a location for the axis of rotation of the mirror according to the point of incidence which belongs to the set of intersection points determined to show the minimum variation.
27. Process as claimed in claim 26, wherein a computer is used to determine the individual sets of intersection points and the set of intersection points with the minimum variation.
28. Process as claim 26, wherein the axis of rotation runs through the center of gravity of the mirror.