Optical filter element that separates incident rays into ordinary rays and extraordinary rays for the purpose of removing false signals.
In addition to quartz crystals, we also offer components made using lithium niobate as the birefringent material. We also provide various thin film coatings such as conductive films and water repellent films.

Optical element that utilizes the difference in velocity between ordinary ray and extraordinary ray due to the birefringence of quartz crystals to create retardations between the two rays. A wide range of wave plates is available, including multiple zero order wave plates, compound zero order wave plates, and true zero order wave plates, using quartz crystals as the birefringent material.

"N-Grade EX," the highest purity synthetic quartz crystal with excellent resistance that is grown in-house, can be used as the birefringent material. Since N-Grade EX is not degraded by laser irradiation, it is the ideal material for semiconductor lithography equipment and high power lasers.

Filters for various applications and performance, such as UVIR-cut filters, ND filters, various optical wafers, optical windows with AR coating, etc., are available for correcting light intensity and color temperature, or as windows to protect electronic sensors and detectors from the surrounding environment.

We also handle broadband and narrowband bandpass coatings.