Patent ID: 9273996
Filing Date: 2016-03-01
CPC Classification: G01J,G02B

Claim Text:
1. An optical receptacle that is capable of optically coupling a light-emitting element and an optical transmission body in a state in which the optical receptacle is disposed between a photoelectric conversion device and the optical transmission body, the photoelectric conversion device having the light-emitting element and a light-receiving element that receives monitor light for monitoring light emitted from the light-emitting element, said optical receptacle comprising: a first surface on the photoelectric conversion device side of an optical receptacle main body on which the light from the light-emitting element is incident and from which the monitor light directed towards the light-receiving element is emitted; a light dividing surface that is disposed on a second surface of the optical receptacle main body on the side opposite to the first surface so that the light from the light-emitting element that has been incident on the first surface is internally incident on the light dividing surface, and that divides the internally incident light from the light-emitting element into the monitor light and coupling light to be coupled with the optical transmission body using total reflection; a monitor light reflecting surface that is formed by an inner slope of a recessing section formed in a recessing manner on the second surface in a position on the side opposite to the total reflection direction of the monitor light and the coupling light in relation to the light dividing surface, and that reflects the monitor light that has been incident from the light dividing surface side towards a position on the first surface corresponding to the light-receiving element; and a third surface on the optical transmission body side of the receptacle main body from which the coupling light that has passed through a section of the recessing section further towards the second surface side than the monitor light reflecting surface is emitted towards the optical transmission body, wherein the light dividing surface includes