1. A telescopic flashlight comprising:
a handle adapted to receive a battery for providing power;
a telescopic shaft selectively and longitudinally received in the handle, the telescopic shaft including a series of sleeves slidably received one by one, each sleeve having a stop structure longitudinally formed thereon to prevent the series of sleeves from rotating relative to one another; and
a light element mounted to a free end of the telescopic shaft.
2. The telescopic flashlight as claimed in claim 1, wherein each stop structure has two opposite sides, one having a rib formed thereon and the other having a groove defined therein, the rib slidably received in the groove of one adjacent sleeve and the groove slidably receiving the rib of the other adjacent sleeve.
3. The telescopic flashlight as claimed in claim 1 further comprising a flexible axle having two opposite ends respectively to the free end of the telescopic shaft and the light element such that the light element is universally operated.
4. The telescopic flashlight as claimed in claim 1, wherein a diameter of each of the series of sleeves is gradually reduced relative to the light element.
5. The telescopic flashlight as claimed in claim 2 further comprising a flexible axle having two opposite ends respectively to the free end of the telescopic shaft and the light element such that the light element is universally operated.
6. The telescopic flashlight as claimed in claim 2, wherein a diameter of each of the series of sleeves is gradually reduced relative to the light element.
7. The telescopic flashlight as claimed in claim 3, wherein a diameter of each of the series of sleeves is gradually reduced relative to the light element.
8. The telescopic flashlight as claimed in claim 5, wherein a diameter of each of the series of sleeves is gradually reduced relative to the light element.
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 method, of treating a structure of an eye with an x-ray beam from a radiotherapy system, comprising:
contacting a surface of the eye with an eye contact member that is coupled to the radiotherapy system;
emitting a first x-ray beam toward the structure, from the radiotherapy system located outside the eye, such that the first x-ray beam has a first trajectory that intersects a primary axis substantially at the structure;
after emitting the first x-ray beam, moving the radiotherapy system about the primary axis;
emitting a second x-ray beam toward the structure, from the radiotherapy system, such that the second x-ray beam has a second trajectory, different than the first trajectory, that intersects the primary axis substantially at the structure; wherein the primary axis passes through the structure and the eye contact member.
2. The method of claim 1, further comprising directing the first x-ray beam through a portion of the eye contact member that is transmissive to x-ray radiation.
3. The method of claim 1, further comprising emitting a light toward the eye that provides an indication of a trajectory of the x-ray beam.
4. The method of claim 1, further comprising emitting the light through a portion of the eye contact member that is transmissive to the light.
5. The method of claim 1, further comprising substantially fixing the eye in a first position with the eye contact member.
6. The method of claim 1, further comprising detecting movement of the eye from a first position to a second position.
7. The method of claim 6, further comprising generating a signal indicative of the movement of the eye.
8. The method of claim 7, further comprising altering the emitting based on the signal.
9. The method of claim 8, wherein the altering comprises changing a trajectory of the x-ray beam.
10. The method of claim 8, wherein the altering comprises ceasing or reducing the emission of the x-ray beam when the second position is outside a determined area of eye movement.