Patent ID: 7439533
Filing Date: 2008-10-21
Classification: G01J,G02B,H01S

Abstract:
1. An optical module comprising: a light emitting element; a connector part that supports one end of an optical fiber and optically couples the optical fiber to the light emitting element; a monitoring light-receiving element that has a characteristic to increase photosensitivity with an increase in an ambient temperature, and receives a part of components of light emitted from the light emitting element; and a lens that has a characteristic to reduce a refractive index with an increase in an ambient temperature, and is disposed between the light emitting element and a semitransparent plate that is disposed between the light emitting element and the connector part, wherein a mutual distance between the light emitting element and the lens is set such that a focal position of the lens, when the ambient temperature is a predetermined temperature higher than room temperature, concurs with one end of the optical fiber.