1. A direction sensitive detector for measuring radiation from afar, comprising:
a first radiation detection system including:
a first scintillating optical fiber having a curved circular arc shape and being operable to convert incident radiation into a light signal; and
a plurality of flat collimators substantially evenly spaced apart on an outer periphery of said scintillating optical fiber in a radial pattern;
light receiving elements respectively connected to each end of said scintillating optical fiber and operable to convert the light signal propagating in two directions along said scintillating optical fiber into electric signals; and
a radiation analysis system operable to derive an incident position of the radiation based on a difference between arrival times of the electric signals from said light receiving elements;
a second radiation detection system including:
a second arc-shaped scintillating optical fiber; and
a plurality of flat collimators substantially evenly spaced apart on an outer periphery of said second scintillating optical fiber in a radial pattern, said second radiation detection system being arranged so that a center of said second radiation detection system crosses a center of said first radiation detection system at a right angle; and
wherein each of said first radiation detection system and said second radiation detection system further includes a fiber guide having an outer surface curved in a semicircular shape and a groove formed along said outer surface, a plurality of scintillating optical fibers being housed in said groove, and a plurality of flat collimators being fixed to said outer surface of said fiber guide.
2. A direction sensitive detector for measuring radiation from afar, comprising:
a radiation detection system including:
a scintillating optical fiber having a curved circular arc shape and being operable to convert incident radiation into a light signal; and
a plurality of flat collimators substantially evenly spaced apart on an outer periphery of said scintillating optical fiber in a radial pattern;
light receiving elements respectively connected to each end of said scintillating optical fiber and operable to convert the light signal propagating in two directions along said scintillating optical fiber into electric signals; and
a radiation analysis system operable to derive an incident position of the radiation based on a difference between arrival times of the electric signals from said light receiving elements;
wherein said radiation detection system further includes a fiber guide having an outer surface curved in a semicircular shape and a groove formed along said outer surface, a plurality of scintillating optical fibers being housed in said groove, and a plurality of flat collimators being fixed to said outer surface of said fiber guide.
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 protection case for an electronic device, comprising:
a base cover in which an electronic device including a main display is accommodated;
a flip cover, which includes an auxiliary display on a front surface portion of the flip cover; and
a connection portion, which connects the flip cover to the base cover,
wherein
when the main display is covered with the flip cover, the flip cover is converted to a closed position,
when the main display is exposed, the flip cover is converted to an opened position,
when the flip cover is in the closed position and the auxiliary display is hidden, the auxiliary display is converted to a first position, and
when the flip cover is in the closed position and the auxiliary display is exposed, the auxiliary display is converted to a second position.
2. The protection case of claim 1, wherein the connection portion comprises
a first end portion connected to the base cover; and
a second end portion extended from the first end portion and connected to a center portion of a rear surface portion of the flip cover,
wherein the flip cover is pivotably connected to the second end portion to be moved to the first and second positions.
3. The protection case of claim 2, wherein a depression portion is formed in the rear surface portion, and the second end portion is connected to the depression portion.
4. The protection case of claim 3, wherein the depression portion has a depth that is greater than or equal to a thickness of a portion of the connection portion that overlaps the flip cover.
5. The protection case of claim 2, wherein the connection portion further comprises:
a first connection portion that is extended from the first end portion and is foldable; and
a second connection portion that is extended from the second end portion and is connected to the first connection portion and overlaps the flip cover.
6. The protection case of claim 5, wherein when the flip cover is located at the first position or the second position, the second connection portion is adhered to the flip cover via a magnetic force.
7. The protection case of claim 5, wherein the second connection portion includes a plurality of segment members which are pivotably connected to one another, and
wherein when the flip cover is located at the first position, the plurality of segment members are at a position where the segment members are adhered to the flip cover via a magnetic force or are at a position where the segment members support the flip cover at a predetermined inclination angle.
8. The protection case of claim 7, wherein edges of the flip cover and the base cover that are adjacent to the connection portion are adhered to each other via the magnetic force.
9. The protection case of claim 5, further comprising a position detecting unit which detects at which of the first position and the second position the flip cover is located.
10. The protection case of claim 9, wherein the position detecting unit comprises:
a magnet disposed on the second connection portion; and
first and second magnetic sensors disposed on the flip cover so as to be spaced apart from each other with the center portion disposed between the first and second magnetic sensors.
11. The protection case of claim 1, wherein the base cover is a battery cover of the electronic device.
12. An electronic device comprising:
a main body including a main display;
a battery cover which accommodates the main body such that the main display is exposed;
a flip cover including an auxiliary display on a front surface portion of the flip cover; and
a connection portion which connects the flip cover to the battery cover,
wherein
when the main display is covered with the flip cover, the flip cover is converted to a closed position,
when the main display is exposed, the flip cover is converted to an opened position,
when the flip cover is in the closed position and the auxiliary display is hidden, the auxiliary display is converted to a first position, and
when the flip cover is in the closed position and the auxiliary display is exposed, the auxiliary display is converted to a second position.
13. The electronic device of claim 12, wherein the connection portion comprises
a first end portion connected to the battery cover, and
a second end portion extended from the first end portion and connected to a center portion of a rear surface portion of the flip cover,
wherein the flip cover is pivotably connected to the second end portion to be moved to the first and second positions.
14. The electronic device of claim 13, wherein a depression portion is formed in the rear surface portion,
the second end portion is connected to the depression portion, and
the depression portion has a depth that is greater than or equal to a thickness of a portion of the connection portion that overlaps the flip cover.
15. The electronic device of claim 13, wherein the connection portion further comprises:
a first connection portion that is extended from the first end portion and is foldable; and
a second connection portion that is extended from the second end portion and is connected to the first connection portion and overlaps the flip cover.
16. The electronic device of claim 15, wherein when the flip cover is located at the first position or the second position, the second connection portion is adhered to the flip cover via a magnetic force.
17. The electronic device of claim 16, wherein the second connection portion includes a plurality of segment members that are pivotably connected to one another, and
wherein the plurality of segment members are at a position where the segment members are adhered to the flip cover via the magnetic force or are at a position where the segment members support the flip cover at a predetermined inclination angle.
18. The electronic device of claim 17, wherein edges of the flip cover and the battery cover that are adjacent to the connection portion are adhered to each other via the magnetic force.
19. The electronic device of claim 15, further comprising a position detecting unit which detects at which of the first position and the second position the flip cover is located.
20. The electronic device of claim 19, wherein the position detecting unit comprises:
first and second magnets that are asymmetrically disposed on the flip cover with respect to the center portion; and
first and second magnetic sensors that are disposed on the main body and detect the first and second magnets, respectively, at the first position and the second position.