The present invention relates to a camera module and a manufacturing method thereof, in which both front and rear directions can be provided by improving the disadvantage of the existing camera module providing only one direction photographing. The flow of a very small volume of fluid can be quantitatively regulated through a channel having a particular design that can induce spontaneous flow by capillary force without additional manipulation processes and energy requirement. Detection of repetitions in a transmitted signal such as streaming audio or video is described, and includes extracting a plurality of samples from the information stream and accumulating the samples into segments comprising an interval of the transmitted signal. The carriage has a length that is shorter than the length of the rack. The ultraviolet sensor has a relatively fast response of several microseconds. A laser processing apparatus which comprises a laser generation device and a stage for mounting thereon a sample provided separately from said device, to thereby prevent transfer of vibration attributed to the movement of the stage to the laser generation device and the optical system.