Patent ID: 8744223

Claim:
An array-type photo module, comprising: an optical fiber array which, in each channel, has a pair of an incident optical fiber guiding incident light and an emitting optical fiber guiding emitting light; a gradient-index lens array which, in each channel, has a gradient-index lens of approximately x/4 cycle length (x is an odd number), which is joined to an emitting end of the incident optical fiber and an incident end of the emitting optical fiber and has at its central axis a symmetric axis of an optical axis of the emitting light from the incident optical fiber and the optical axis of the incident light to the emitting optical fiber; a filter which is joined to an opposite end of the optical fiber array of the gradient-index lens array, and in each channel, transmits therethrough a portion of the emitting light from the incident optical fiber on the opposite side of the gradient-index lens array and reflects another portion of the emitting light from the incident optical fiber toward the gradient-index lens array; and a light-shielding member which is arranged on the opposite side of the gradient-index lens array of the filter, and in each channel, has an opening through which transmitted light from the filter passes on the opposite side of the filter; wherein the light-shielding member is a plurality of light-shielding members arranged to be spaced from each other, and in each channel, the opening of the plurality of light-shielding members and the transmission position of the filter are arranged on a straight line.