Optical Module
AssigneeNippon Sheet Glass Co., Ltd.
InventorsNaoko Hikichi, Kenichi Nakama, Yasunori Arima
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Abstract
An optical module according to the invention can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of the transmission-type diffraction grating is mounted at an angle in a range of ±5° with respect to the design incident angle α of the incident light. The optical system can be applied to a light multiplexing/demultiplexing module.
Claims22
An optical module comprising an optical system using a diffraction optical element for bending an optical axis of an incident light beam with a specific wavelength at about 90°.
Dependencies are inferred from the claim text.