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US 8,554,030 B2Granted
Optically coupled device and optical module including optically coupled device
AssigneeEnplas Corporation
InventorKoji Noguchi
Life of this patent
Estimating the term…
Abstract
An optically coupled device and an optical module including the optically coupled device are provided that can appropriately and efficiently perform position measurement of an optical surface, and allow a product having superior overall efficiency to be stably manufactured at a low cost. An optically coupled device main body 15 is formed having a shape that allows both first lens surface 5 and second lens surface 8 to be viewed simultaneously from a surface normal direction of at least one of a first surface portion 2a and a second surface portion 3a.
Claims10
An optically coupled device to which a photoelectric conversion device, on which a photoelectric conversion element that emits or receives light is formed, and a multi-mode optical fiber can be attached, said optically coupled device optically coupling the photoelectric conversion element and an end surface of the optical fiber and comprising:
- a first lens surface formed on a first surface portion of an end surface on a photoelectric conversion device side of an optically coupled device main body, the first surface portion facing the photoelectric conversion element when the photoelectric conversion device is attached thereto, and the first lens surface forming an optical path connecting the photoelectric conversion element and an end surface of the optical fiber;
- a second lens surface formed on a second surface portion of an end surface on an optical fiber side of the optically coupled device main body, the second surface portion facing the end surface of the optical fiber when the optical fiber is attached thereto, and the second lens surface forming an optical path connecting the photoelectric conversion element and the end surface of the optical fiber;
- wherein,
- the optically coupled device main body is formed so as to have a shape in which
- the end surface on the photoelectric conversion device side and the end surface on the optical fiber side are adjacent to each other, and
- the first surface portion and the second surface portion are perpendicular to each other,
- the end surface on the optical fiber side of said optically coupled device main body is formed with:
- a burr clearance surface portion which is on an optical fiber side of the optically coupled device main body and in which a positioning means formed on said optically coupled main body is coupled with a positioning means formed in a connector of said optical fiber,
- a fourth surface portion formed in a position adjacent to both the second surface portion and the end surface on the photoelectric conversion device side of the optically coupled device main body so as to connect said second surface portion and said end surface on said photoelectric conversion device side, so that said fourth surface portion has a same planar shape as the second surface portion or is lower towards a side heading away from the optical fiber in a surface normal direction of the second surface portion in relation to the second surface portion,
- a third surface portion formed, in a peripheral position of the second surface portion and in a position in which the fourth surface portion is not formed, so as to be higher than the second surface portion and the burr clearance surface portion on the optical fiber side and so as to be towards the optical fiber side in the surface normal direction of the second surface portion in relation to the second surface portion, said third surface portion being in physical contact with the connector of the optical fiber when the optical fiber is attached thereto, and
- said optically coupled device main body is formed such that the fourth surface portion allows the second lens surface to be viewed simultaneously with the first lens surface from the surface normal direction of the first surface portion.
8 more elements
An optically coupled device to which a photoelectric conversion device, on which a photoelectric conversion element that emits or receives light is formed, and a multi-mode optical fiber can be attached, said optically coupled device optically coupling the photoelectric conversion element and an end surface of the optical fiber and comprising:
- a first lens surface formed on a first surface portion of an end surface on a photoelectric conversion device side of an optically coupled device main body, the first surface portion facing the photoelectric conversion element when the photoelectric conversion device is attached thereto, and the first lens surface forming an optical path connecting the photoelectric conversion element and an end surface of the optical fiber;
- a second lens surface formed on a second surface portion of an end surface on an optical fiber side of the optically coupled device main body, the second surface portion facing the end surface of the optical fiber when the optical fiber is attached thereto, and the second lens surface forming an optical path connecting the photoelectric conversion element and the end surface of the optical fiber;
- wherein,
- the optically coupled device main body is formed so as to have a shape in which
- the end surface on the photoelectric conversion device side and the end surface on the optical fiber side are adjacent to each other, and
- the first surface portion and the second surface portion are perpendicular to each other,
- the end surface on the photoelectric conversion device side of the optically coupled device main body includes
- a burr clearance surface portion which is on the photoelectric conversion device side of the optically coupled device main body and in which a positioning means formed in said optically coupled main body is coupled with a positioning means formed on the photoelectric conversion device,
- a sixth surface portion formed in a position adjacent to both the first surface portion and the end surface on the optical fiber side of the optically coupled device main body so as to connect said first surface portion and said end surface on said optical fiber side, so that said sixth surface portion has a same planar shape as the first surface portion or is lower towards a side heading away from the photoelectric conversion device in a surface normal direction of the first surface portion in relation to the first surface portion;
- and
- a fifth surface portion formed, in a peripheral position of the first surface portion and in a position in which the sixth surface portion is not formed, so as to be higher than the first surface portion and the burr clearance surface portion on the photoelectric conversion device side and so as to be towards the photoelectric conversion device side in the surface normal direction of the first surface portion in relation to the first surface portion, said fifth surface portion being in physical contact with the photoelectric conversion device when the photoelectric conversion device is attached thereto, and
- the optically coupled device is formed such that the sixth surface portion allows the first lens surface to be viewed simultaneously with the second lens surface from the surface normal direction of the second surface portion.
9 more elements
Dependencies are inferred from the claim text.