Optical module and production method therefor

An optical module comprising:

• a planar microlens array substrate having a plurality of microlenses formed in at least one surface thereof;
• a planar transparent substrate for adjusting a conjugate ratio, one surface thereof being adhered to a surface of the lens array substrate;
• and
• an alignment recess array including a plurality of alignment recesses which are formed in a material applied to the other surface of the transparent substrate by means of a mold with the center of each alignment recess being aligned to the center of a corresponding one of the microlens.

A method for fabricating an optical module comprising the steps of:

• preparing a mold having convex portions to form a plurality of alignment recesses for optical fibers;
• providing a sol-gel layer by applying a sol-gel material on one surface of a planar microlens array substrate having a plurality of microlenses formed in the other surface thereof;
• forming the alignment recesses by pressing the mold to the sol-gel layer to transfer the convex portions to the sol-gel layer;
• and
• baking and curing the sol-gel layer in which the alignment recesses are formed.

A method for fabricating an optical module comprising the steps of:

• preparing a mold having convex portions to form a plurality of alignment recesses for optical fibers;
• providing a sol-gel layer by applying a sol-gel material on one surface of a planar transparent substrate for adjusting a conjugate ratio,
• forming the alignment recesses by pressing the mold to the sol-gel layer to transfer the convex portions to the sol-gel layer;
• baking and curing the sol-gel layer in which the alignment recesses are formed;
• and
• adhering the other surface of the transparent substrate to one surface of a planar microlens array substrate having a plurality of microlenses formed in the other surface thereof with the center of each alignment recesses being aligned the center of a corresponding one of the microlens.

A method for fabricating an optical module comprising the steps of:

• preparing a mold having convex portions to form a plurality of alignment recesses for optical fibers;
• applying a photo-curing adhesive on one surface of a planar microlens array substrate having a plurality of microlenses formed in the other surface thereof;
• forming the alignment recesses by pressing the mold to the photo-curing adhesive to transfer the convex portions to the photo-curing adhesive;
• and
• curing the photo-curing adhesive by irradiating ultraviolet ray thereto.

A method for fabricating an optical module comprising the steps of:

• preparing a mold having convex portion to form a plurality of alignment recesses for optical fibers;
• adhering one surface of a planar transparent for adjusting a conjugate ratio to on a surface of a planar microlens array substrate having a plurality of microlenses formed in at least one surface thereof;
• applying a photo-curing adhesive on the other surface of the transparent substrate,
• forming the alignment recesses by pressing the mold to the photo-curing adhesive to transfer the convex portions to the photo-curing adhesive;
• and
• curing the photo-curing adhesive by irradiating ultraviolet ray thereto.

A method for fabricating an optical module comprising the steps of:

• preparing a mold having convex portions to form a plurality of alignment recesses for optical fibers;
• applying a photo-curing adhesive on one surface of a planar transparent substrate for adjusting a conjugate ratio;
• forming the alignment recesses by pressing the mold to the photo-curing adhesive to transfer the convex portions to the photo-curing adhesive;
• and
• adhering the other surface of the planar transparent substrate to on a surface of a planar microlens array substrate having a plurality of microlenses formed in at least one surface thereof with the center of each alignment recess being aligned the center of a corresponding one of the microlens.