Sample clock generator for optical tomographic imaging apparatus, and optical tomographic imaging apparatus

摘要

A sample clock generator includes a first optical path and a second optical path through which input lights are guided, an optical phase shifter to shift a phase of the input light guided through the first optical path, an interference-light generating unit to combine a phase-shifted input light and the input light guided through the second optical path to thereby generate an interference light for sample clock, a splitting unit to split the interference light for sample clock into two split lights having different phases, one light receiving unit to at least receive one split light from among the two split lights having different phases, the other light receiving unit to at least receive the other split light, a signal generating unit to generate a sample clock signal based on signals outputted from the one light receiving unit and the other light receiving unit.

主权项

1. A sample clock generator for an optical tomographic imaging apparatus configured to receive a frequency-swept input light emitted from a light source and to generate a sample clock signal, the sample clock generator comprising:
an interference optical system comprising:
a first optical path through which part of the input light is guided;a second optical path through which other part of the input light is guided;an optical phase shifter to shift a phase of the input light guided through the first optical path;an interference-light generator to combine the input light guided through the first optical path and phase-shifted and the input light guided through the second optical path, to thereby generate an interference light for sample clock; anda splitter to split the interference light for sample clock into a first split light and a second split light having different phases; and an operator at least comprising:
a first light receiver to at least receive the first split light;a second light receiver to at least receive the second split light; anda signal generator to generate the sample clock signal based on signals outputted from the first light receiver and the second light receiver.