1. An imaging system capable of clipping a plurality of partial images from an image captured by an imaging apparatus, converting an image size of each clip image, and producing an output image with a converted image size, the imaging system comprising:
a calculation unit configured to calculate an overall in-focus position based on an in-focus position of each clip image, an image size of each clip image, and an image size of each output image; and
a focus control unit configured to perform focus control for the imaging apparatus based on the overall in-focus position calculated by the calculation unit.
2. The imaging system according to claim 1, wherein the calculation unit calculates the overall in-focus position that represents a focusing position corresponding to a smallest value in a function defining a largest value among a plurality circle-of-confusion diameters which are variable depending on a focusing position on each output image.
3. The imaging system according to claim 2, further comprising:
an aperture calculation unit configured to calculate an aperture value so that a circle-of-confusion diameter at the overall in-focus position is equal to or less than a diameter of an allowable circle of confusion; and
an aperture control unit configured to perform diaphragm control based on the aperture value calculated by the aperture calculation unit.
4. The imaging system according to claim 3, wherein when a pixel distance on the output image is greater than the diameter of an allowable circle of confusion on the output image, the diameter of the allowable circle of confusion is equalized to the pixel distance on the ouput image.
5. The imaging system according to claim 2, wherein when the circle-of-confusion diameter on an image is variable depending on a pixel position, the circle-of-confusion diameter of each clip image includes a change amount relative to a circle-of-confusion diameter at a calculation standard position.
6. The imaging system according to claim 5, wherein the calculation standard position is selected from the group consisting of a center pixel position of each clip image, a pixel position corresponding to a range-finding point on each clip image, and a pixel position where the circle-of-confusion diameter is maximized in each clip image.
7. The imaging system according to claim 2, wherein when a pixel distance on a clip image is greater than the diameter of an allowable circle of confusion on the clip image, the diameter of an allowable circle of confusion on the output image is calculated while the diameter of an allowable circle of confusion on the clip image is regarded as a pixel distance on the clip image.
8. An imaging apparatus capable of clipping a plurality partial images from an image, converting an image size of each clip image, and producing an output image with a converted image size, the imaging apparatus comprising:
a calculation unit configured to calculate an overall in-focus position based on an in-focus position of each clip image, an image size of each clip image, and an image size of each output image, and
a focus control unit configured to perform focus control based on the overall in-focus position calculated by the calculation unit.
9. A method for controlling an imaging apparatus capable of clipping a plurality of partial images from an image, converting an image size of each clip image, and producing an output image with a converted image size, the method comprising:
calculating an overall in-focus position based on an in-focus position of each clip image, an image size of each clip image, and an image size of each output image, and
performing focus control for the imaging apparatus based on the calculated overall in-focus position.
10. A computer storage medium storing program code instructions which, when executed by a computer, causes an imaging apparatus to clip a plurality partial images from an image, convert an image size of each clip image, and produce an output image with a converted image size, the medium comprising:
instructions for calculating an overall in-focus position based on an in-focus position of each clip image, an image size of each clip image, and an image size of each output image, and
instructions for performing a focus control for the imaging apparatus based on the calculated overall in-focus 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 hollow fiber module comprising:
a housing, and
a hollow fiber bundle mounted in the housing and having a fluid penetration distance ranged from 10 to 200 mm,
wherein the fluid penetration distance means the shortest distance from the outmost hollow fiber in a cross-section of the hollow fiber bundle to the hollow fiber existing at the center in the cross-section of the hollow fiber bundle.
2. The hollow fiber module according to claim 1, wherein the ratio of the fluid penetration distance to the length of the hollow fiber bundle is in the range of 5 to 100%.
3. The hollow fiber module according to claim 1, wherein the hollow fiber bundle has a wide and flat shape.
4. The hollow fiber module according to claim 3, wherein the thickness of the hollow fiber bundle is in the range of 20 to 400 mm.
5. The hollow fiber module according to claim 3, wherein the ratio of the thickness to the width is in the range of 10 to 100%.
6. The hollow fiber module according to claim 1, wherein the hollow fiber bundle comprises the hollow fibers in the amount of 30 to 60 vol % relative to the total volume of the hollow fiber bundle.
7. The hollow fiber module according to claim 1, comprising a plurality of the hollow fiber bundles and a barrier dividing the hollow fiber bundles.
8. The hollow fiber module according to claim 7, comprising a plurality of the barriers, and the barrier is disposed to surround each of the hollow fiber bundle.
9. The hollow fiber module according to claim 7, wherein the barrier has through-holes.
10. The hollow fiber module according to claim 1, wherein the housing has a circular or an angular cross-sectional shape.
11. The hollow fiber module according to claim 1, wherein the housing is opened at both ends, and the housing has an inlet port and an outlet port.
12. The hollow fiber module according to claim 1, further comprising a potting portion fixing an end portion of the hollow fiber bundle to the housing and coupled to an end portion of the housing so as to hermetically seal the housing.
13. The hollow fiber module according to claim 1, further comprising a cover coupled to an end portion of the housing and having a fluid port.
14. The hollow fiber module according to claim 1, wherein the hollow fiber module is any one selected from the group consisting of a gas separating module, a heat exchanging module, a humidifying module and a water-treatment module.
15. The hollow fiber module according to claim 8, wherein the barrier has through-holes.