Optical device, light emitting device, optical apparatus utilizing same, and production method thereof

An optical device that controls an optical characteristic of an electromagnetic wave with a wavelength λ, comprising:

• a polarizer which comprises a concavoconvex structure, allows a P polarized light of the incident electromagnetic wave to pass through, and absorbs an S polarized light thereof;
• a first phase difference element which comprises a concavo-convex structure, and which is capable of converting a linear polarized :light into a circular polarized light or an elliptical polarized light;
• and
• a base on which the polarizer and the first phase difference element are formed, and which is transmissive for the electromagnetic wave between the polarizer and the first phase difference element.

A light emitting device that comprises a light emitting layer that emits an electromagnetic wave with a wavelength λ, comprising:

• a polarizer which comprises a concavo-convex structure, allows a P polarized light of the incident electromagnetic wave to pass through, and reflects an S polarized light thereof;
• a mirror which is provided at an opposite side of the polarizer to the light emitting layer, and which reflects the electromagnetic wave toward the polarizer;
• and
• a first phase difference element which comprises a concavo-convex structure, and which is capable of converting the reflected electromagnetic wave by the polarizer into a circular polarized light or an elliptical polarized light.

A production method of an optical device comprising a polarizer the method comprising:

• a first phase difference element forming process to form the first phase difference element;
• a protector forming process to form a protector that protects a concavo-convex structure of the first phase difference element;
• and
• a polarizer forming process to form a polarizer which comprises a concavo-convex structure, allows a P polarized light of an incident electromagnetic wave to pass through, and reflects an S polarized light thereof, and the first phase difference element which comprises the concavo-convex structure, and which is capable of converting a linear polarized light into a circular polarized light or an elliptical polarized light.

A production method of an optical device comprising a polarizer, the method comprising:

• a polarizer forming process to form a polarizer which comprises a concavo-convex structure, allows a P polarized light of an incident electromagnetic wave to pass through, and reflects an S polarized light thereof, and a first phase difference element which comprises a concavo-convex structure, and which is capable of converting a linear polarized light into a circular polarized light or an elliptical polarized light,
• a protector forming process to form a protector that protects the concavo-convex structure of the polarizer;
• and
• a first phase difference element forming process to form the first phase difference element.

A production method of an optical device comprising a polarizer the method comprising:

• a first phase difference element forming process to form a first phase difference element;
• a polarizer forming process to form a polarizer which comprises a concavo-convex structure, allows a P polarized light of an incident electromagnetic wave to pass through, and reflects an S polarized light thereof, and the first phase difference element which comprises a concavo-convex structure, and which is capable of converting a linear polarized light into a circular polarized light or an elliptical polarized light;
• and
• a first joining process to join the first phase difference element and the polarizer together.