PROBLEM TO BE SOLVED: To provide a plant cultivation apparatus capable of efficiently irradiating plants with light with an artificial light source in a simple constitution.SOLUTION: A plant cultivation apparatus comprises an irradiation part 3 above a culture medium substance M, the irradiation part 3 comprises: a light source 30 equipped with a laser light source an optical member 31 which linearly spreads laser light made incident from the light source 30 to emit a laser line beam a reflection member 32 which reflects the laser line beam that was made incident from the optical member 31 and a drive part which is operated such that a laser line beam reflected by varying a reflection surface of the reflection member 32 scans an irradiation region to allow the region to be intermittently irradiated.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】本発明は、植物に対して簡単な構成で人工光源により効率的に光を照射することができる植物栽培装置を提供することを目的とするものである。【解決手段】植物栽培装置は、培地物質Mの上方に照射部3を備えており、照射部3は、レーザ光源を備えた光源30と、光源30から入射したレーザ光をライン状に拡げてレーザライン光を出射する光学部材31と、光学部材31から入射したレーザライン光を反射させる反射部材32と、反射部材32の反射面を変動させて反射されたレーザライン光が照射領域を走査して間欠的に照射するように動作させる駆動部とを備えている。【選択図】図1
