LUMINOUS FLUX CONTROL MEMBER, LIGHT EMITTING DEVICE, AND ILLUMINATION DEVICE

摘要

This luminous flux control member (160) has an incident region (162) at which light output from a light emitting element (140) is caused to be incident, and an emission region (164) from which light incident from the incident region (162) is emitted. The incident region (162) comprises a first lens region (10) having a first Fresnel lens unit (170) or a refraction unit (168), and a second lens region (50) having a second Fresnel lens unit (180). An optical path conversion angle (Ө2) of light (R20) incident on the second Fresnel lens unit (180) is larger than the optical path conversion angle (Ө 1) of light (R10) incident on the first Fresnel lens unit (170) or a refraction unit (268).