OPTICAL MATERIAL, OPTOELECTRONIC PART AND OPTOELECTRONIC APPLIANCE

摘要

An object of the invention is to provide an optical material that is not affected by an environmental variation and of which birefringence is within ± 0.0005, and to provide an optical electronic component and an optical electronic device including the optical material.;An optical material is characterized in that the optical material is lithium tantalate and a molar composition ratio of lithium oxide and tantalum oxide (Li₂O/Ta₂O₅) in the lithium tantalate is in the range of 0.975 to 0.982. Since an optical material that has high refractive index can be used in an optical unit, at the same focal distance, a thickness of a lens can be reduced. As a result, when the lens having the characteristics is used, an optical electronic component that has a reduced size and thickness and is highly functional can be provided and an optical electronic device having the above characteristics can be provided.