Optical lens device assembly

An optical lens device assembly comprising:

• a substrate having a groove;
• two optical lens devices placed face to face mutually in said groove;
• an optical fiber placed in said groove and facing one of said optical lens devices;
• an optical device placed on said substrate and facing the other of said optical lens devices, and having either of functions of light emitting or light receiving;
• a resin member having optical transmittance used to fill in spaces of between said optical device and said one of optical lens devices, between said optical lens devices and between said the other of optical lens devices and said optical fiber;
• and
• wherein said resin member is made up of a resin material having a refractive index being different from that of each said optical lens device, and the optical axes of each said optical lens_device coincide with those of said optical fiber and said optical device.