Patent ID: 7991251

Claim:
An optical module comprising: a first single-crystal silicon substrate having a first primary surface formed with a first depression having a first inclined surface inclined with respect to the first primary surface; a second single-crystal silicon substrate having a second primary surface facing the first silicon single-crystal substrate and formed with a second depression having a second inclined surface inclined with respect to the second primary surface; and a first substrate arranged between the first primary surface of the first single-crystal silicon substrate and the second primary surface of the second single-crystal silicon substrate, two primary surfaces of the first substrate being bonded to the first primary surface of the first single-crystal silicon substrate and the second primary surface of the second single-crystal silicon substrate, respectively, the first substrate having an optical filter on the primary surfaces thereof between the first inclined surface and the second inclined surface; wherein the first inclined surface and the second inclined surface are inclined with respect to the two primary surfaces of the first substrate, and light which enters the optical module passes through the first inclined surface, the first substrate and the second inclined surface, and then exits the optical module.