| 摘要 |
An optical component 1 is provided with: one or more bandpass filters 10, each of which signal light L enters, and has a bandpass filter film 12; a transparent block 20, which propagates the signal light L, and to which the bandpass filter film 12 of each of the bandpass filters 10 is fixed; a mirror 30 that reflects the signal light L propagated by the transparent block 20; and a space K, i.e., light propagating section, which is formed between the bandpass filters 10 and the mirror 30, and which has a refractive index that is lower than that of the transparent block 20. |
