WO2016117314A1 - Agricultural light source unit, agricultural light source lamp, and method for arranging agricultural light source lamp - Google Patents

Agricultural light source unit, agricultural light source lamp, and method for arranging agricultural light source lamp Download PDF

Info

Publication number
WO2016117314A1
WO2016117314A1 PCT/JP2016/000186 JP2016000186W WO2016117314A1 WO 2016117314 A1 WO2016117314 A1 WO 2016117314A1 JP 2016000186 W JP2016000186 W JP 2016000186W WO 2016117314 A1 WO2016117314 A1 WO 2016117314A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
agricultural
laser
area
Prior art date
Application number
PCT/JP2016/000186
Other languages
French (fr)
Japanese (ja)
Inventor
山崎　正弘
賢二 河野
政利 矢島
泰匡 柴田
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201680002038.XA priority Critical patent/CN107404849B/en
Priority to JP2016569458A priority patent/JP6106853B2/en
Publication of WO2016117314A1 publication Critical patent/WO2016117314A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00—Cultivation of mushrooms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/249—Lighting means

Definitions

  • This disclosure relates to a technique for cultivating crops such as plants and mushrooms using an artificial light source.
  • the chloroplasts to be cultivated by the plant are detected by the imaging means, and the plants to be cultivated are scanned by a scanning mechanism that two-dimensionally scans the light emitted from the semiconductor laser.
  • the structure to irradiate is disclosed in Patent Document 1.
  • This disclosure provides an agricultural light source unit that irradiates a crop cultivation area with a substantially uniform laser beam with an inexpensive and simple configuration.
  • An agricultural light source unit includes a semiconductor laser that emits laser light, a collimator lens that converts the laser light into diverging light or substantially parallel light, a light diffusing element, and a laser driving unit that drives the semiconductor laser to emit light. , Is composed of. Then, the light intensity distribution of the laser light is made substantially uniform by the light diffusing element and irradiated to the cultivation area of the crop.
  • the agricultural light source lamp in the present disclosure includes a plurality of agricultural light source units arranged in a straight line.
  • an overlapping region is formed by a region on one side of the irradiation region irradiated by the agricultural light source unit and a region on one side of the irradiation region irradiated by another adjacent agricultural light source unit.
  • the agricultural light source unit of the present disclosure it is possible to uniformly irradiate the crop with light with an inexpensive and simple configuration in the cultivation area of the crop irradiated with the laser light emitted from the semiconductor laser.
  • FIG. 1 is a configuration diagram of an agricultural light source unit in the embodiment.
  • FIG. 2 is a diagram showing a light intensity distribution before the laser light passes through the light diffusing element in the embodiment.
  • FIG. 3 is a diagram showing a light intensity distribution after the laser light passes through the light diffusing element in the embodiment.
  • FIG. 4 is a schematic diagram of a light diffusing element in the embodiment.
  • FIG. 5 is a diagram showing that the laser light emitted to the cultivation area by the agricultural light source unit in the embodiment is formed in a substantially square shape.
  • FIG. 6 is a diagram showing that the laser light irradiated to the cultivation area by the agricultural light source unit in the embodiment is formed in a pincushion shape.
  • FIG. 7 is a diagram showing experimental results in the embodiment.
  • FIG. 1 is a configuration diagram of an agricultural light source unit in the embodiment.
  • FIG. 2 is a diagram showing a light intensity distribution before the laser light passes through the light diffusing element in the embodiment.
  • FIG. 3 is
  • FIG. 8 is a configuration diagram of an agricultural light source lamp in the embodiment.
  • FIG. 9A is a plan view of the agricultural light source lamp in the embodiment as viewed from above, and shows that the laser light irradiated to the cultivation region is formed in a substantially rectangular shape.
  • FIG. 9B is a plan view of the agricultural light source lamp according to the embodiment as seen from the lateral direction, and shows that the laser light applied to the cultivation region is formed in a substantially square shape.
  • FIG. 10A is a plan view of the agricultural light source lamp as viewed from above according to the embodiment, and shows that the laser light applied to the cultivation area is formed in a pincushion shape.
  • FIG. 9A is a plan view of the agricultural light source lamp in the embodiment as viewed from above, and shows that the laser light applied to the cultivation area is formed in a pincushion shape.
  • FIG. 10B is a plan view of the agricultural light source lamp according to the embodiment as seen from the lateral direction, and shows that the laser light applied to the cultivation region is formed in a pincushion shape.
  • FIG. 11 is a diagram illustrating an arrangement method of the agricultural light source lamp in the embodiment.
  • FIG. 12 is a configuration diagram of an agricultural light source unit according to another embodiment.
  • FIG. 13 is a diagram illustrating a configuration of the plant cultivation apparatus disclosed in Patent Document 1. As illustrated in FIG.
  • FIG. 1 is a diagram showing a configuration of an agricultural light source unit 5 and its irradiation area in the present embodiment.
  • FIG. 2 is a diagram showing a light intensity distribution before the laser light passes through the light diffusing element in the embodiment.
  • FIG. 3 is a diagram showing a light intensity distribution after the laser light passes through the light diffusing element in the embodiment.
  • FIG. 4 is a schematic diagram of a light diffusing element in the embodiment.
  • FIG. 5 is a diagram showing that the laser light emitted to the cultivation area by the agricultural light source unit in the embodiment is formed in a substantially square shape.
  • FIG. 6 is a diagram showing that the laser light irradiated to the cultivation area by the agricultural light source unit in the embodiment is formed in a pincushion shape.
  • the agricultural light source unit 5 includes a semiconductor laser 1, a collimating lens 2, a mirror 3, a light diffusing element 4, a laser driving means 6, and a housing 9.
  • the semiconductor laser 1, the collimating lens 2, and the mirror 3 are provided inside the housing 9.
  • the laser beam 1 a emitted from the semiconductor laser 1 is deflected by the mirror 3 via the collimator lens 2, and irradiated to the cultivation area 7 via the light diffusing element 4.
  • the semiconductor laser 1 emits blue-violet light having a center wavelength of 405 nanometers (hereinafter, nm), red light having a center wavelength of 660 nm, or infrared light having a center wavelength of 780 nm.
  • Semiconductor lasers having these wavelength bands record and reproduce Blu-ray (Blu-ray (registered trademark) Disc, hereinafter referred to as BD), DVD (Digital Versatile Disc), and CD optical discs in an optical pickup mounted on an optical disc apparatus. It is used for.
  • the light intensity distribution of the laser beam 1a emitted from the semiconductor laser 1 has a Gaussian shape as shown in FIG.
  • the collimating lens 2 converts the laser light 1a emitted from the semiconductor laser 1 into substantially parallel light or divergent light and outputs it.
  • the mirror 3 deflects the laser beam 1a output from the collimating lens 2.
  • the light diffusing element 4 converts the light intensity distribution of the laser beam 1a deflected by the mirror 3 into a substantially uniform output, and irradiates the cultivation area 7.
  • that the light intensity distribution is substantially uniform means that the light intensity P1 of the laser light 1a applied to the end of the cultivation area 7 is 50% or more of the light intensity peak P0.
  • the configuration of the light diffusing element 4 is such that a plurality of microlenses 4a are arranged on one surface of a flat substrate 4b as shown in FIG.
  • the laser driving means 6 is for driving the semiconductor laser 1 by injecting a current to emit light.
  • the cultivation object 8 is grown by the laser light 1 a irradiated from the light diffusing element 4 to the cultivation area 7.
  • the type of cultivation object 8 may be selected depending on the wavelength band of the semiconductor laser 1. For example, crops that can be grown with blue-violet light are mushroom seeds, and crops that can be grown with red light are leafy vegetables such as lettuce.
  • the cross-sectional shape of the laser beam 1a emitted from the semiconductor laser 1 is substantially circular or elliptical. When the laser beam 1a passes through the light diffusing element 4, the laser beam 1a is irradiated in a substantially rectangular irradiation region. 5a (FIG. 5), or the irradiation area 5b (FIG.
  • the design conditions of the microlens 4a, the substantially parallel light or the divergence output from the collimating lens 2 is used. It can be set according to the light spreading angle.
  • FIG. 7 is a diagram showing experimental results in the embodiment.
  • FIG. 7 shows the result of component analysis after the cultivation experiment.
  • the conditions were blue-violet light with a center wavelength of the semiconductor laser 1 of 405 nm, and the cultivation object 8 was beech shimeji.
  • the condition of 15 ° C. and humidity is 90%.
  • mushrooms are generally known to be effective with light having a center wavelength of 450 nm, such as a blue LED
  • blue-violet light output from a semiconductor laser In FIG. 7, the result of using the semiconductor laser 1 (light having a central wavelength of 405 nm) is shown in the vertical column of “LD irradiation”, and the blue LED (central wavelength is in the vertical column of “LED irradiation”). The result when using a light of 450 nm is shown. According to this result, the growth of beech shimeji is promoted by using the semiconductor laser 1 having a central wavelength of 405 nm, and the yield is about 1.5 times that of a blue LED having a central wavelength of 450 nm. The amount (mass) could be secured.
  • the results of the component analysis also show that those grown with blue-violet light from the semiconductor laser 1 have a higher content of potassium, thiamine and niacin, and blue-violet light is more suitable for growing mushrooms and improving their functions. I understood.
  • the light intensity distribution of the laser light 1a from the semiconductor laser 1 is made substantially uniform by the light diffusing element 4, and the cultivation area 7 is irradiated to grow the cultivation object 8.
  • the number of parts is small, the laser light can be made almost uniform with a simple structure and irradiated to the cultivation target, and it is inexpensive and low consumption used in the BD / DVD / CD optical disk devices that are put in large quantities on the market. It has an excellent effect of stabilizing and enhancing the growth of crops using a power semiconductor laser.
  • region 5a of the laser beam 1a is formed in the irradiation area
  • the cultivation object 8 it becomes easy to arrange the cultivation object 8 by changing the irradiation area 5a from the substantially circular shape to the irradiation area 5b having a substantially square shape or a pincushion shape, and it has an excellent effect that it is easy to set the cultivation area.
  • FIG. 8 is a configuration diagram of the agricultural light source lamp 10 in the present embodiment.
  • FIG. 9A is a plan view of the agricultural light source lamp in the embodiment as viewed from above, and shows that the laser light irradiated to the cultivation region is formed in a substantially rectangular shape.
  • FIG. 9B is a plan view of the agricultural light source lamp as viewed from the side in the embodiment.
  • FIG. 10A is a plan view of the agricultural light source lamp as viewed from above according to the embodiment, and shows that the laser light applied to the cultivation area is formed in a pincushion shape.
  • FIG. 10B is a plan view of the agricultural light source lamp in the embodiment as seen from the lateral direction.
  • the agricultural light source lamp 10 is configured by arranging a plurality of agricultural light source units 5 in a straight line. As shown in FIGS. 8, 9A, 9B, 10A, and 10B, the arrangement interval of each agricultural light source unit arranged in a straight line is a substantially rectangular shape irradiated by another adjacent agricultural light source unit 55. A region on one side of the irradiation region 5a or the pincushion-shaped irradiation region 5b is set so as to overlap like the irradiation regions 5aa and 5bb. As a result, the light intensity increases due to overlapping of the light intensity drop portions at the ends in the light intensity distribution shown in FIG.
  • the dimensions in the present embodiment are such that the height H from the output surface of the laser light 1a of the light diffusing element 4 of the agricultural light source unit 5 to the cultivation object 8 is about 20 centimeters, and the width M is about 30.
  • the centimeter, the width N is about 25 centimeters, and the overlapping portion dimension P is about 2.5 centimeters.
  • FIG. 11 is a diagram illustrating a method of arranging the agricultural light source lamp 10.
  • the convex part 5b1 of the pincushion-shaped irradiation region 5b of another agricultural light source lamp 10a is superimposed on the concave part of the pincushion-shaped irradiation region 5b of the agricultural light source lamp 10, and the agricultural light source A plurality of lamps 10 are arranged substantially in parallel.
  • the convex part 5b1 of the pincushion-shaped irradiation region 5b of the other agricultural light source lamp 10a By superimposing the convex part 5b1 of the pincushion-shaped irradiation region 5b of the other agricultural light source lamp 10a on the concave part of the pincushion-shaped irradiation region 5b, it is possible to eliminate the portion where the light amount in the cultivation region 7 is low. It is possible to irradiate the cultivation object 8 substantially uniformly.
  • the light intensity can be maintained in a substantially uniform state even when the cultivation region 7 has a large area.
  • that the light intensity distribution is substantially uniform means that the light intensity P1 of the laser light 1a applied to the edge of the cultivation region 7 is 50% or more of the light intensity peak P0.
  • the agricultural light source lamp 10 is formed by arranging a plurality of agricultural light source units 5 in a straight line, and is irradiated in a substantially square shape irradiated by the agricultural light source unit 5. A region of one side of the region 5a or the pincushion-shaped irradiation region 5b and a region of one side of the substantially rectangular irradiation region 5a or the pincushion-shaped irradiation region 5b irradiated by another adjacent agricultural light source unit 55 The overlapped irradiation areas 5aa and 5bb are formed.
  • the pincushion-shaped irradiation region of the other agricultural light source lamp 10a is provided in the recess of the pincushion-shaped irradiation region 5b of the agricultural light source lamp 10.
  • a plurality of convex portions 5b1 of 5b are arranged so as to overlap each other and substantially parallel to each other.
  • the semiconductor laser 1 may be in the green wavelength band or the infrared wavelength band as long as it is effective for plant growth.
  • a semiconductor laser having such characteristics is used in an optical pickup for recording on an optical disk such as an inexpensive BD / DVD recorder that is introduced in large quantities in the market.
  • Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments that have been changed, replaced, added, omitted, and the like. Therefore, another embodiment is illustrated.
  • the agricultural light source unit 5 including the semiconductor laser 1, the collimating lens 2, the mirror 3, the light diffusing element 4, the laser driving means 6, and the housing 9 has been described.
  • the structure which does not have the mirror 3 may be sufficient.
  • a semiconductor laser 1, a collimator lens 2, a light diffusing element 4, a laser driving means 6, and a housing 21 are provided. It may be a configuration.
  • FIG. 12 is a configuration diagram of an agricultural light source unit according to another embodiment.
  • the laser light 1 a emitted from the semiconductor laser 1 is converted into substantially parallel light or divergent light by the collimating lens 2 and reaches the light diffusing element 4.
  • the laser beam 1a that has reached the light diffusing element 4 is converted by the light diffusing element 4 so that the light intensity distribution becomes substantially uniform as shown in FIG.
  • the agricultural light source unit 20 has a casing 21 that is thicker than the agricultural light source unit 5. However, when the agricultural light source unit 20 is used for cultivation of crops, the same effect as when the agricultural light source unit 5 is used. Obtainable.
  • FIG. 13 is a diagram showing a configuration of the plant cultivation apparatus disclosed in Patent Document 1.
  • an optical fiber 102 is attached to the semiconductor laser 101, and light from the semiconductor laser 101 is scanned two-dimensionally by a scanning mechanism 103 constituted by a galvanometer mirror or the like.
  • the imaging unit 104 which is a monochrome two-dimensional CCD, detects an area where the chloroplast of the plant 109 exists, and determines the scanning range of the scanning mechanism 103 based on the detection result.
  • the scanning mechanism 103 is driven, and the irradiation position of the light from the semiconductor laser 101 is repeatedly scanned two-dimensionally.
  • the agricultural light source unit in the present disclosure drives a semiconductor laser that emits laser light, a collimating lens that makes the laser light divergent light or substantially parallel light, a light diffusing element, and a semiconductor laser. And laser driving means for emitting light. Then, the light intensity distribution of the laser light is made substantially uniform by the light diffusing element and irradiated to the cultivation area of the crop.
  • the agricultural light source lamp in the present disclosure includes a plurality of agricultural light source units arranged in a straight line.
  • an overlapping region is formed by a region on one side of the irradiation region irradiated by the agricultural light source unit and a region on one side of the irradiation region irradiated by another adjacent agricultural light source unit.
  • the agricultural light source unit of the present disclosure it is possible to uniformly irradiate the crop with light and a simple configuration in the cultivation area of the crop irradiated with the laser light emitted from the semiconductor laser.
  • An agricultural light source unit and an agricultural light source lamp according to the present disclosure are inexpensive and highly functional crop cultivation systems that have a simple configuration and substantially uniform light intensity with respect to a crop cultivation apparatus that grows crops with an artificial light source. This is useful for realizing the above.

Abstract

Provided is an agricultural light source unit (5) configured from: a semiconductor laser (1) that emits laser light (1a); a collimator lens (2) that converts the laser light (1a) into divergent light or substantially parallel light; a light-diffusing element (4); and a laser drive means (6) that drives the semiconductor laser (1) and causes light to be emitted. The light intensity distribution of the laser light (1a) is substantially homogenized by the light-diffusing element (4) and the resulting light is used to illuminate a crop cultivation area (7).

Description

農業用光源ユニット、農業用光源灯および農業用光源灯の配置方法Agricultural light source unit, agricultural light source lamp, and arrangement method of agricultural light source lamp
　本開示は、人工的な光源により植物やきのこ等の作物を栽培する技術に関する。 This disclosure relates to a technique for cultivating crops such as plants and mushrooms using an artificial light source.
　近年、蛍光灯やＬＥＤ（Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）、半導体レーザー（Ｌａｓｅｒ　Ｄｉｏｄｅ）などの人工的な光源を用いて作物を栽培する研究が進められており、人工光型植物工場や太陽光と人工光の併用型植物工場として実用化されている。このような植物工場を設立するためのイニシャルコストとしては、照明用光源が大半を占めており、また光熱費といったランニングコストもかかってくるため、低コストで植物工場を運営していくには照明用光源の仕様選定、構成の設計が非常に重要となる。 In recent years, research on cultivation of crops using artificial light sources such as fluorescent lamps, LEDs (Light Emitting Diodes), and semiconductor lasers (Laser Diodes) has been promoted. It has been put to practical use as a combined plant factory. As the initial cost for establishing such a plant factory, the light source for illumination occupies the majority, and running costs such as utility costs are also incurred, so lighting is necessary to operate the plant factory at low cost. It is very important to select specifications for the light source and design the configuration.
　このような植物工場の照明用光源として、植物栽培対象の葉緑体を撮像手段部で検出して、半導体レーザーから出射された光を２次元に走査する走査機構にて栽培対象となる植物へ照射する構成が特許文献１に開示されている。 As a light source for illumination in such a plant factory, the chloroplasts to be cultivated by the plant are detected by the imaging means, and the plants to be cultivated are scanned by a scanning mechanism that two-dimensionally scans the light emitted from the semiconductor laser. The structure to irradiate is disclosed in Patent Document 1.
特開２０１２－５４５３号公報JP 2012-5453 A
　本開示は、安価で簡単な構成でレーザー光を略均一化して作物の栽培領域へ照射する農業用光源ユニットを提供する。 This disclosure provides an agricultural light source unit that irradiates a crop cultivation area with a substantially uniform laser beam with an inexpensive and simple configuration.
　本開示における農業用光源ユニットは、レーザー光を放射する半導体レーザーと、レーザー光を発散光または略平行光とするコリメートレンズと、光拡散素子と、半導体レーザーを駆動して発光させるレーザー駆動手段と、で構成されている。そして、レーザー光の光強度分布を、光拡散素子によって略均一化して、作物の栽培領域に照射する。 An agricultural light source unit according to the present disclosure includes a semiconductor laser that emits laser light, a collimator lens that converts the laser light into diverging light or substantially parallel light, a light diffusing element, and a laser driving unit that drives the semiconductor laser to emit light. , Is composed of. Then, the light intensity distribution of the laser light is made substantially uniform by the light diffusing element and irradiated to the cultivation area of the crop.
　本開示における農業用光源灯は、農業用光源ユニットを、直線状に複数配置して成る。また、農業用光源ユニットで照射される照射領域の一辺の領域と、隣接した他の農業用光源ユニットで照射される照射領域の一辺の領域とで、重ね合わせた領域を形成する。 The agricultural light source lamp in the present disclosure includes a plurality of agricultural light source units arranged in a straight line. In addition, an overlapping region is formed by a region on one side of the irradiation region irradiated by the agricultural light source unit and a region on one side of the irradiation region irradiated by another adjacent agricultural light source unit.
　本開示の農業用光源ユニットによれば、半導体レーザーから放射されるレーザー光が照射する作物の栽培領域において、安価で簡単な構成で作物に光を均一に照射することが可能となる。 According to the agricultural light source unit of the present disclosure, it is possible to uniformly irradiate the crop with light with an inexpensive and simple configuration in the cultivation area of the crop irradiated with the laser light emitted from the semiconductor laser.
図１は、実施の形態における農業用光源ユニットの構成図である。FIG. 1 is a configuration diagram of an agricultural light source unit in the embodiment. 図２は、実施の形態におけるレーザー光が光拡散素子を通過する前の光強度分布を示す図である。FIG. 2 is a diagram showing a light intensity distribution before the laser light passes through the light diffusing element in the embodiment. 図３は、実施の形態におけるレーザー光が光拡散素子を通過した後の光強度分布を示す図である。FIG. 3 is a diagram showing a light intensity distribution after the laser light passes through the light diffusing element in the embodiment. 図４は、実施の形態における光拡散素子の概略図である。FIG. 4 is a schematic diagram of a light diffusing element in the embodiment. 図５は、実施の形態における農業用光源ユニットによって栽培領域へ照射されたレーザー光が略四角形状に形成されたことを示す図である。FIG. 5 is a diagram showing that the laser light emitted to the cultivation area by the agricultural light source unit in the embodiment is formed in a substantially square shape. 図６は、実施の形態における農業用光源ユニットによって栽培領域へ照射されたレーザー光が糸巻き型形状に形成されたことを示す図である。FIG. 6 is a diagram showing that the laser light irradiated to the cultivation area by the agricultural light source unit in the embodiment is formed in a pincushion shape. 図７は、実施の形態における実験結果を示す図である。FIG. 7 is a diagram showing experimental results in the embodiment. 図８は、実施の形態における農業用光源灯の構成図である。FIG. 8 is a configuration diagram of an agricultural light source lamp in the embodiment. 図９Ａは、実施の形態における農業用光源灯を上方向から見た平面図であり、栽培領域へ照射されたレーザー光が略四角形状に形成されたことを示す図である。FIG. 9A is a plan view of the agricultural light source lamp in the embodiment as viewed from above, and shows that the laser light irradiated to the cultivation region is formed in a substantially rectangular shape. 図９Ｂは、実施の形態における農業用光源灯を横方向から見た平面図であり、栽培領域へ照射されたレーザー光が略四角形状に形成されたことを示す図である。FIG. 9B is a plan view of the agricultural light source lamp according to the embodiment as seen from the lateral direction, and shows that the laser light applied to the cultivation region is formed in a substantially square shape. 図１０Ａは、実施の形態における農業用光源灯を上方向から見た平面図であり、栽培領域へ照射されたレーザー光が糸巻き型形状に形成されたことを示す図である。FIG. 10A is a plan view of the agricultural light source lamp as viewed from above according to the embodiment, and shows that the laser light applied to the cultivation area is formed in a pincushion shape. 図１０Ｂは、実施の形態における農業用光源灯を横方向から見た平面図であり、栽培領域へ照射されたレーザー光が糸巻き型形状に形成されたことを示す図である。FIG. 10B is a plan view of the agricultural light source lamp according to the embodiment as seen from the lateral direction, and shows that the laser light applied to the cultivation region is formed in a pincushion shape. 図１１は、実施の形態における農業用光源灯の配置方法を示す図である。FIG. 11 is a diagram illustrating an arrangement method of the agricultural light source lamp in the embodiment. 図１２は、他の実施の形態における農業用光源ユニットの構成図である。FIG. 12 is a configuration diagram of an agricultural light source unit according to another embodiment. 図１３は、特許文献１に開示された植物栽培装置の構成を示す図である。FIG. 13 is a diagram illustrating a configuration of the plant cultivation apparatus disclosed in Patent Document 1. As illustrated in FIG.
　以下、適宜図面を参照しながら、実施の形態を詳細に説明する。但し、必要以上に詳細な説明は省略する場合がある。例えば、既によく知られた事項の詳細説明や実質的に同一の構成に対する重複説明を省略する場合がある。これは、以下の説明が不必要に冗長になるのを避け、当業者の理解を容易にするためである。 Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.
　なお、添付図面および以下の説明は、当業者が本開示を十分に理解するために、提供されるのであって、これらにより請求の範囲に記載の主題を限定することは意図されていない。 The accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the claimed subject matter.
　（実施の形態１）
　＜１－１．農業用光源ユニットの構成＞
　図１は、本実施の形態における農業用光源ユニット５の構成とその照射領域を示す図である。図２は、実施の形態におけるレーザー光が光拡散素子を通過する前の光強度分布を示す図である。図３は、実施の形態におけるレーザー光が光拡散素子を通過した後の光強度分布を示す図である。図４は、実施の形態における光拡散素子の概略図である。図５は、実施の形態における農業用光源ユニットによって栽培領域へ照射されたレーザー光が略四角形状に形成されたことを示す図である。図６は、実施の形態における農業用光源ユニットによって栽培領域へ照射されたレーザー光が糸巻き型形状に形成されたことを示す図である。 (Embodiment 1)
<1-1. Configuration of agricultural light source unit>
FIG. 1 is a diagram showing a configuration of an agricultural light source unit 5 and its irradiation area in the present embodiment. FIG. 2 is a diagram showing a light intensity distribution before the laser light passes through the light diffusing element in the embodiment. FIG. 3 is a diagram showing a light intensity distribution after the laser light passes through the light diffusing element in the embodiment. FIG. 4 is a schematic diagram of a light diffusing element in the embodiment. FIG. 5 is a diagram showing that the laser light emitted to the cultivation area by the agricultural light source unit in the embodiment is formed in a substantially square shape. FIG. 6 is a diagram showing that the laser light irradiated to the cultivation area by the agricultural light source unit in the embodiment is formed in a pincushion shape.
　図１に示すように、農業用光源ユニット５は、半導体レーザー１と、コリメートレンズ２と、ミラー３と、光拡散素子４と、レーザー駆動手段６と、筐体９とを備えている。半導体レーザー１、コリメートレンズ２およびミラー３は、筐体９の内部に設けられている。半導体レーザー１から放射されたレーザー光１ａは、コリメートレンズ２を経由してミラー３で偏向され、光拡散素子４を経由して栽培領域７に照射される。 As shown in FIG. 1, the agricultural light source unit 5 includes a semiconductor laser 1, a collimating lens 2, a mirror 3, a light diffusing element 4, a laser driving means 6, and a housing 9. The semiconductor laser 1, the collimating lens 2, and the mirror 3 are provided inside the housing 9. The laser beam 1 a emitted from the semiconductor laser 1 is deflected by the mirror 3 via the collimator lens 2, and irradiated to the cultivation area 7 via the light diffusing element 4.
　半導体レーザー１は中心波長が４０５ナノメートル（以下、ｎｍ）の青紫光、または中心波長が６６０ｎｍの赤色光、または中心波長が７８０ｎｍの赤外光を放射するものである。これらの波長帯を持つ半導体レーザーは、光ディスク装置に搭載されている光ピックアップにおけるブルーレイ（Ｂｌｕ－ｒａｙ（登録商標）　Ｄｉｓｃ、以下ＢＤ）、ＤＶＤ（Ｄｉｇｉｔａｌ　Ｖｅｒｓａｔｉｌｅ　Ｄｉｓｃ）、ＣＤの各光ディスクを記録再生するのに用いられているものである。 The semiconductor laser 1 emits blue-violet light having a center wavelength of 405 nanometers (hereinafter, nm), red light having a center wavelength of 660 nm, or infrared light having a center wavelength of 780 nm. Semiconductor lasers having these wavelength bands record and reproduce Blu-ray (Blu-ray (registered trademark) Disc, hereinafter referred to as BD), DVD (Digital Versatile Disc), and CD optical discs in an optical pickup mounted on an optical disc apparatus. It is used for.
　半導体レーザー１より放射されるレーザー光１ａの光強度分布は、図２に示すようにガウシアン形状となっている。コリメートレンズ２は半導体レーザー１から放射されたレーザー光１ａを略平行光または発散光に変換して出力するものである。ミラー３はコリメートレンズ２から出力されたレーザー光１ａを偏向するものである。 The light intensity distribution of the laser beam 1a emitted from the semiconductor laser 1 has a Gaussian shape as shown in FIG. The collimating lens 2 converts the laser light 1a emitted from the semiconductor laser 1 into substantially parallel light or divergent light and outputs it. The mirror 3 deflects the laser beam 1a output from the collimating lens 2.
　図３に示すように、光拡散素子４はミラー３によって偏向されたレーザー光１ａの光強度分布を、略均一に変換して出力し、栽培領域７に照射するものである。ここで光強度分布が略均一であるとは、栽培領域７の端部に照射されるレーザー光１ａの光強度Ｐ１が光強度のピークＰ０の５０％以上となることをいう。 As shown in FIG. 3, the light diffusing element 4 converts the light intensity distribution of the laser beam 1a deflected by the mirror 3 into a substantially uniform output, and irradiates the cultivation area 7. Here, that the light intensity distribution is substantially uniform means that the light intensity P1 of the laser light 1a applied to the end of the cultivation area 7 is 50% or more of the light intensity peak P0.
　光拡散素子４の構成は、図４に示すように平板状の基板４ｂの片側の表面に複数のマイクロレンズ４ａが配置されているものである。レーザー駆動手段６は、半導体レーザー１に電流を注入して駆動し、発光させるものである。 The configuration of the light diffusing element 4 is such that a plurality of microlenses 4a are arranged on one surface of a flat substrate 4b as shown in FIG. The laser driving means 6 is for driving the semiconductor laser 1 by injecting a current to emit light.
　光拡散素子４から栽培領域７に照射されたレーザー光１ａによって、栽培対象８を生育する。栽培対象８は半導体レーザー１の波長帯によって、種類を選択すればよい。例えば青紫光で育成できる作物はきのこ種、赤色光で育成できる作物はレタスなどの葉物野菜である。また半導体レーザー１から放射されたレーザー光１ａの断面形状は略円形状や楕円形状であるが、レーザー光１ａが光拡散素子４を通過することで、レーザー光１ａは、略四角形状の照射領域５ａ（図５）、または、略四角形状の各辺の中央部が内側に凹んだ形状の照射領域５ｂ（図６）に形成される。図６において、略四角形状の各辺の中央部が内側に凹んだ形状を「糸巻き型形状」という。略四角形状の照射領域５ａまたは糸巻き型形状の照射領域５ｂのいずれかにするには、光拡散素子４の大きさ、マイクロレンズ４ａの設計条件、コリメートレンズ２より出力される略平行光または発散光の拡がり角度によって、設定することができる。 The cultivation object 8 is grown by the laser light 1 a irradiated from the light diffusing element 4 to the cultivation area 7. The type of cultivation object 8 may be selected depending on the wavelength band of the semiconductor laser 1. For example, crops that can be grown with blue-violet light are mushroom seeds, and crops that can be grown with red light are leafy vegetables such as lettuce. The cross-sectional shape of the laser beam 1a emitted from the semiconductor laser 1 is substantially circular or elliptical. When the laser beam 1a passes through the light diffusing element 4, the laser beam 1a is irradiated in a substantially rectangular irradiation region. 5a (FIG. 5), or the irradiation area 5b (FIG. 6) having a shape in which the central portion of each side of the substantially square shape is recessed inward. In FIG. 6, the shape in which the central part of each side of the substantially rectangular shape is recessed inward is called “pincushion shape”. In order to make either the substantially square-shaped irradiation region 5a or the pincushion-shaped irradiation region 5b, the size of the light diffusing element 4, the design conditions of the microlens 4a, the substantially parallel light or the divergence output from the collimating lens 2 is used. It can be set according to the light spreading angle.
　図７は、実施の形態における実験結果を示す図である。 FIG. 7 is a diagram showing experimental results in the embodiment.
　本実施の形態の農業用光源ユニット５を用いて、我々は栽培実験を行った。図７は、栽培実験後、成分分析を実施した結果を示すものである。条件は半導体レーザー１の中心波長が４０５ｎｍの青紫光で、栽培対象８をブナしめじとした。実験期間は芽出期が約１０日、生育期が約１３日、ブナしめじに照射した光量子束密度は芽出期が２μｍｏｌ／ｍ２／ｓｅｃ、生育期が１０μｍｏｌ／ｍ２／ｓｅｃ、環境温度１５℃、湿度条件は９０％の条件である。きのこ類は一般的に青色ＬＥＤのような中心波長が４５０ｎｍの光が有効であることが知られているが、我々は半導体レーザーから出力される青紫光を用いた。図７では、「ＬＤ照射」の縦の列に、半導体レーザー１（中心波長が４０５ｎｍの光）を用いた場合の結果を示し、「ＬＥＤ照射」の縦の列に、青色ＬＥＤ（中心波長が４５０ｎｍの光）を用いた場合の結果を示している。この結果によれば、中心波長が４０５ｎｍである半導体レーザー１を用いることでブナしめじの生育が促進され、中心波長が４５０ｎｍである青色ＬＥＤで育成したものとの比較で約１．５倍の収穫量（質量）を確保することができた。また成分分析の結果では半導体レーザー１による青紫光で育成したものの方がカリウム、チアミン、ナイアシンの含有量が多いという結果も得られ、きのこ類の育成、高機能化に青紫光が好適であることがわかった。 Using the agricultural light source unit 5 of the present embodiment, we conducted a cultivation experiment. FIG. 7 shows the result of component analysis after the cultivation experiment. The conditions were blue-violet light with a center wavelength of the semiconductor laser 1 of 405 nm, and the cultivation object 8 was beech shimeji. The duration of the experiment bud ejection period of about 10 days, the growing season is about 13 days, photon flux density is irradiated in beech shimeji the life out buds 2μmol / m 2 / sec, the growing season is 10μmol / m 2 / sec, ambient temperature The condition of 15 ° C. and humidity is 90%. Although mushrooms are generally known to be effective with light having a center wavelength of 450 nm, such as a blue LED, we used blue-violet light output from a semiconductor laser. In FIG. 7, the result of using the semiconductor laser 1 (light having a central wavelength of 405 nm) is shown in the vertical column of “LD irradiation”, and the blue LED (central wavelength is in the vertical column of “LED irradiation”). The result when using a light of 450 nm is shown. According to this result, the growth of beech shimeji is promoted by using the semiconductor laser 1 having a central wavelength of 405 nm, and the yield is about 1.5 times that of a blue LED having a central wavelength of 450 nm. The amount (mass) could be secured. The results of the component analysis also show that those grown with blue-violet light from the semiconductor laser 1 have a higher content of potassium, thiamine and niacin, and blue-violet light is more suitable for growing mushrooms and improving their functions. I understood.
　なお、分析は、一般財団法人　日本食品分析センターに依頼して行った（試験成績書第１４０３３１２２号）。 The analysis was conducted at the request of the Japan Food Analysis Center (Test Result No. 14033122).
　＜１－２．効果＞
　以上のように、本実施の形態によれば、半導体レーザー１からのレーザー光１ａの光強度分布を光拡散素子４によって略均一化して、栽培領域７に照射して栽培対象８を栽培する。これにより部品点数が少なく、簡単な構成でレーザー光を略均一化して栽培対象に照射することができ、市場に大量に投入されているＢＤ／ＤＶＤ／ＣＤ光ディスク装置で用いている安価で低消費電力の半導体レーザーを用いて作物の生長を安定化・高機能化するという優れた効果を有する。 <1-2. Effect>
As described above, according to the present embodiment, the light intensity distribution of the laser light 1a from the semiconductor laser 1 is made substantially uniform by the light diffusing element 4, and the cultivation area 7 is irradiated to grow the cultivation object 8. As a result, the number of parts is small, the laser light can be made almost uniform with a simple structure and irradiated to the cultivation target, and it is inexpensive and low consumption used in the BD / DVD / CD optical disk devices that are put in large quantities on the market. It has an excellent effect of stabilizing and enhancing the growth of crops using a power semiconductor laser.
　また本実施の形態によれば、光拡散素子４によってレーザー光１ａの照射領域５ａを略四角形状または糸巻き型形状の照射領域５ｂに形成し、栽培領域７に対して指定した照射範囲に照射する。これにより照射領域５ａを略円形状から略四角形状または糸巻き型形状の照射領域５ｂにすることで栽培対象８が配置しやすくなり、栽培領域を設定しやすいという優れた効果を有する。 Moreover, according to this Embodiment, the irradiation area | region 5a of the laser beam 1a is formed in the irradiation area | region 5b of substantially square shape or a pincushion type shape with the light-diffusion element 4, and it irradiates to the irradiation range designated with respect to the cultivation area | region 7. . Thereby, it becomes easy to arrange the cultivation object 8 by changing the irradiation area 5a from the substantially circular shape to the irradiation area 5b having a substantially square shape or a pincushion shape, and it has an excellent effect that it is easy to set the cultivation area.
　（実施の形態２）
　＜２－１．農業用光源灯の構成＞
　次に、実施の形態２として農業用光源灯について説明する。図８は、本実施の形態における農業用光源灯１０の構成図である。図９Ａは、実施の形態における農業用光源灯を上方向から見た平面図であり、栽培領域へ照射されたレーザー光が略四角形状に形成されたことを示す図である。図９Ｂは、実施の形態における農業用光源灯を横方向から見た平面図である。図１０Ａは、実施の形態における農業用光源灯を上方向から見た平面図であり、栽培領域へ照射されたレーザー光が糸巻き型形状に形成されたことを示す図である。図１０Ｂは、実施の形態における農業用光源灯を横方向から見た平面図である。 (Embodiment 2)
<2-1. Structure of agricultural light source>
Next, an agricultural light source lamp will be described as a second embodiment. FIG. 8 is a configuration diagram of the agricultural light source lamp 10 in the present embodiment. FIG. 9A is a plan view of the agricultural light source lamp in the embodiment as viewed from above, and shows that the laser light irradiated to the cultivation region is formed in a substantially rectangular shape. FIG. 9B is a plan view of the agricultural light source lamp as viewed from the side in the embodiment. FIG. 10A is a plan view of the agricultural light source lamp as viewed from above according to the embodiment, and shows that the laser light applied to the cultivation area is formed in a pincushion shape. FIG. 10B is a plan view of the agricultural light source lamp in the embodiment as seen from the lateral direction.
　図８、図９Ａ、図９Ｂ、図１０Ａ、図１０Ｂにおいて、農業用光源灯１０は、複数の農業用光源ユニット５を直線状に配置することにより構成される。直線状に配置した各農業用光源ユニットの配置間隔は、図８、図９Ａ、図９Ｂ、図１０Ａ、図１０Ｂに示すように隣接する他の農業用光源ユニット５５で照射される略四角形状の照射領域５ａまたは糸巻き型形状の照射領域５ｂの一辺の領域を、照射領域５ａａ、５ｂｂのように重ね合わせるように設定する。これによって図３に示す光強度分布における端部の光強度の落ち込み部が重なることで光強度が増加することになり、１つの農業用光源ユニット５によってレーザー光１ａが照射される照射範囲の光強度分布に比べて、より均一な光強度分布を得ることができる。このため、光強度分布の略均一な状態を維持することができる。 8, 9A, 9B, 10A, and 10B, the agricultural light source lamp 10 is configured by arranging a plurality of agricultural light source units 5 in a straight line. As shown in FIGS. 8, 9A, 9B, 10A, and 10B, the arrangement interval of each agricultural light source unit arranged in a straight line is a substantially rectangular shape irradiated by another adjacent agricultural light source unit 55. A region on one side of the irradiation region 5a or the pincushion-shaped irradiation region 5b is set so as to overlap like the irradiation regions 5aa and 5bb. As a result, the light intensity increases due to overlapping of the light intensity drop portions at the ends in the light intensity distribution shown in FIG. 3, and the light in the irradiation range in which the laser light 1 a is irradiated by one agricultural light source unit 5. Compared to the intensity distribution, a more uniform light intensity distribution can be obtained. For this reason, a substantially uniform state of the light intensity distribution can be maintained.
　なお図８において、本実施の形態における寸法は、農業用光源ユニット５の光拡散素子４のレーザー光１ａの出力面から栽培対象８までの高さＨが約２０センチメートル、幅Ｍが約３０センチメートル、幅Ｎが約２５センチメートル、重ねあわせ部寸法Ｐが約２．５センチメートルである。 In FIG. 8, the dimensions in the present embodiment are such that the height H from the output surface of the laser light 1a of the light diffusing element 4 of the agricultural light source unit 5 to the cultivation object 8 is about 20 centimeters, and the width M is about 30. The centimeter, the width N is about 25 centimeters, and the overlapping portion dimension P is about 2.5 centimeters.
　＜２－２．農業用光源灯の配置方法＞
　次に、農業用光源灯を複数配置する配置方法について説明する。図１１は農業用光源灯１０の配置方法を示す図である。図１１において、農業用光源灯１０の糸巻き型形状の照射領域５ｂの凹部に、他の農業用光源灯１０ａの糸巻き型形状の照射領域５ｂの凸部５ｂ１を重ね合わせるように、かつ農業用光源灯１０を略平行に複数配置する。糸巻き型形状の照射領域５ｂの凹部に、他の農業用光源灯１０ａの糸巻き型形状の照射領域５ｂの凸部５ｂ１を重ね合わせることで、栽培領域７の中の光量が低い部分をなくすことができ、略均一に栽培対象８へ照射することができる。農業用光源灯１０を略平行に複数配置することで、栽培領域７が広い面積の場合であっても、光強度を略均一状態に維持することができる。ここで光強度分布が略均一であるとは、栽培領域７の縁部に照射されるレーザー光１ａの光強度Ｐ１が光強度のピークＰ０の５０％以上となることをいう。 <2-2. Arrangement method of agricultural light source>
Next, an arrangement method for arranging a plurality of agricultural light source lamps will be described. FIG. 11 is a diagram illustrating a method of arranging the agricultural light source lamp 10. In FIG. 11, the convex part 5b1 of the pincushion-shaped irradiation region 5b of another agricultural light source lamp 10a is superimposed on the concave part of the pincushion-shaped irradiation region 5b of the agricultural light source lamp 10, and the agricultural light source A plurality of lamps 10 are arranged substantially in parallel. By superimposing the convex part 5b1 of the pincushion-shaped irradiation region 5b of the other agricultural light source lamp 10a on the concave part of the pincushion-shaped irradiation region 5b, it is possible to eliminate the portion where the light amount in the cultivation region 7 is low. It is possible to irradiate the cultivation object 8 substantially uniformly. By arranging a plurality of agricultural light source lamps 10 substantially in parallel, the light intensity can be maintained in a substantially uniform state even when the cultivation region 7 has a large area. Here, that the light intensity distribution is substantially uniform means that the light intensity P1 of the laser light 1a applied to the edge of the cultivation region 7 is 50% or more of the light intensity peak P0.
　＜２－３．効果＞
　以上のように、本実施の形態によれば、農業用光源灯１０は、農業用光源ユニット５を、直線状に複数配置して成り、農業用光源ユニット５で照射される略四角形状の照射領域５ａまたは糸巻き型形状の照射領域５ｂの一辺の領域と、隣接した他の農業用光源ユニット５５で照射される略四角形状の照射領域５ａまたは糸巻き型形状の照射領域５ｂの一辺の領域とで、重ね合わせた照射領域５ａａ、５ｂｂを形成する。これによって複数配置した農業用光源ユニット５のそれぞれから照射されるレーザー光１ａにおいて、照射領域の一部を重ね合わせることで略均一な光量の照射を実現することができ、簡単な構成で栽培対象８である作物を安定的に生長させることができるという優れた効果を有する。 <2-3. Effect>
As described above, according to the present embodiment, the agricultural light source lamp 10 is formed by arranging a plurality of agricultural light source units 5 in a straight line, and is irradiated in a substantially square shape irradiated by the agricultural light source unit 5. A region of one side of the region 5a or the pincushion-shaped irradiation region 5b and a region of one side of the substantially rectangular irradiation region 5a or the pincushion-shaped irradiation region 5b irradiated by another adjacent agricultural light source unit 55 The overlapped irradiation areas 5aa and 5bb are formed. As a result, in the laser light 1a emitted from each of the plurality of agricultural light source units 5 arranged, it is possible to realize irradiation with a substantially uniform light amount by overlapping a part of the irradiation region, and a cultivation target with a simple configuration It has the outstanding effect that the crop which is 8 can be grown stably.
　また本実施の形態によれば、農業用光源灯の配置方法において、農業用光源灯１０の、糸巻き型形状の照射領域５ｂの凹部に、他の農業用光源灯１０ａの糸巻き型形状の照射領域５ｂの凸部５ｂ１を重ね合わせるように、かつ略平行に複数配置したことを特徴とする。これによって複数の農業用光源灯１０を用いて栽培領域７が広い面積の場合であっても、光強度の略均一状態を維持することができ、簡単な構成で栽培対象８である作物を安定的に生長させることができるという優れた効果を有する。 Further, according to the present embodiment, in the method of arranging the agricultural light source lamp, the pincushion-shaped irradiation region of the other agricultural light source lamp 10a is provided in the recess of the pincushion-shaped irradiation region 5b of the agricultural light source lamp 10. A plurality of convex portions 5b1 of 5b are arranged so as to overlap each other and substantially parallel to each other. As a result, even when the cultivation area 7 is a large area using a plurality of light source lamps 10 for agriculture, the light intensity can be kept substantially uniform, and the crop that is the cultivation object 8 can be stabilized with a simple configuration. It has an excellent effect of being able to grow.
　なお、実施の形態１、実施の形態２において、半導体レーザー１は、植物育成に効果があるものであれば、緑色波長帯域や赤外波長帯域のものであってもよい。このような特性を有する半導体レーザーは、市場で大量に投入されている安価なＢＤ／ＤＶＤレコーダ等の光ディスクの記録する光ピックアップに用いられているものである。 In the first and second embodiments, the semiconductor laser 1 may be in the green wavelength band or the infrared wavelength band as long as it is effective for plant growth. A semiconductor laser having such characteristics is used in an optical pickup for recording on an optical disk such as an inexpensive BD / DVD recorder that is introduced in large quantities in the market.
　＜３．他の実施の形態＞
　以上のように、本出願において開示する技術の例示として、実施の形態１、２を説明した。しかしながら、本開示における技術は、これに限定されず、変更、置き換え、付加、省略などを行った実施の形態にも適用できる。そこで、他の実施の形態を例示する。 <3. Other embodiments>
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments that have been changed, replaced, added, omitted, and the like. Therefore, another embodiment is illustrated.
　上記実施の形態１において、半導体レーザー１と、コリメートレンズ２と、ミラー３と、光拡散素子４と、レーザー駆動手段６と、筐体９とを備えた農業用光源ユニット５について説明したが、ミラー３を有していない構成であってもよい。例えば、図１２に示すように、他の実施の形態における農業用光源ユニット２０として、半導体レーザー１と、コリメートレンズ２と、光拡散素子４と、レーザー駆動手段６と、筐体２１とを備えた構成であってもよい。図１２は、他の実施の形態における農業用光源ユニットの構成図である。 In Embodiment 1 described above, the agricultural light source unit 5 including the semiconductor laser 1, the collimating lens 2, the mirror 3, the light diffusing element 4, the laser driving means 6, and the housing 9 has been described. The structure which does not have the mirror 3 may be sufficient. For example, as shown in FIG. 12, as an agricultural light source unit 20 in another embodiment, a semiconductor laser 1, a collimator lens 2, a light diffusing element 4, a laser driving means 6, and a housing 21 are provided. It may be a configuration. FIG. 12 is a configuration diagram of an agricultural light source unit according to another embodiment.
　この構成では、半導体レーザー１から放射されたレーザー光１ａは、コリメートレンズ２によって略平行光または発散光に変換され、光拡散素子４に到達する。光拡散素子４に到達したレーザー光１ａは、図３に示すように光強度分布が略均一になるように、光拡散素子４によって変換され、栽培領域７に照射される。農業用光源ユニット２０は農業用光源ユニット５に比べて筐体２１の厚みが大きくなるが、農業用光源ユニット２０を作物の栽培に用いる場合、農業用光源ユニット５を用いる場合と同様の効果を得ることができる。 In this configuration, the laser light 1 a emitted from the semiconductor laser 1 is converted into substantially parallel light or divergent light by the collimating lens 2 and reaches the light diffusing element 4. The laser beam 1a that has reached the light diffusing element 4 is converted by the light diffusing element 4 so that the light intensity distribution becomes substantially uniform as shown in FIG. The agricultural light source unit 20 has a casing 21 that is thicker than the agricultural light source unit 5. However, when the agricultural light source unit 20 is used for cultivation of crops, the same effect as when the agricultural light source unit 5 is used. Obtainable.
　図１３は、特許文献１に開示された植物栽培装置の構成を示す図である。図１３に示すように、半導体レーザー１０１には光ファイバ１０２が取り付けられ、ガルバノミラーなどで構成された走査機構１０３によって２次元に半導体レーザー１０１からの光が走査されるようになっている。またモノクロの２次元ＣＣＤである撮像部１０４によって、植物１０９の葉緑体が存在する領域を検出し、その検出結果に基づいて走査機構１０３の走査範囲を決定している。照射範囲が決定されると、走査機構１０３が駆動され、半導体レーザー１０１からの光の照射位置が繰り返し２次元に走査される。 FIG. 13 is a diagram showing a configuration of the plant cultivation apparatus disclosed in Patent Document 1. As shown in FIG. As shown in FIG. 13, an optical fiber 102 is attached to the semiconductor laser 101, and light from the semiconductor laser 101 is scanned two-dimensionally by a scanning mechanism 103 constituted by a galvanometer mirror or the like. In addition, the imaging unit 104, which is a monochrome two-dimensional CCD, detects an area where the chloroplast of the plant 109 exists, and determines the scanning range of the scanning mechanism 103 based on the detection result. When the irradiation range is determined, the scanning mechanism 103 is driven, and the irradiation position of the light from the semiconductor laser 101 is repeatedly scanned two-dimensionally.
　この特許文献１の植物栽培装置の構成には、生産プロセスが半導体プロセスと同じで高価な走査機構１０３を用いてレーザー光の照射範囲を広げる必要がある。 In the configuration of the plant cultivation apparatus of Patent Document 1, it is necessary to widen the irradiation range of laser light by using an expensive scanning mechanism 103 whose production process is the same as that of a semiconductor process.
　以上説明したように、本開示における農業用光源ユニットは、レーザー光を放射する半導体レーザーと、レーザー光を発散光または略平行光とするコリメートレンズと、光拡散素子と、半導体レーザーを駆動して発光させるレーザー駆動手段と、で構成されている。そして、レーザー光の光強度分布を、光拡散素子によって略均一化して、作物の栽培領域に照射する。 As described above, the agricultural light source unit in the present disclosure drives a semiconductor laser that emits laser light, a collimating lens that makes the laser light divergent light or substantially parallel light, a light diffusing element, and a semiconductor laser. And laser driving means for emitting light. Then, the light intensity distribution of the laser light is made substantially uniform by the light diffusing element and irradiated to the cultivation area of the crop.
　本開示における農業用光源灯は、農業用光源ユニットを、直線状に複数配置して成る。また、農業用光源ユニットで照射される照射領域の一辺の領域と、隣接した他の農業用光源ユニットで照射される照射領域の一辺の領域とで、重ね合わせた領域を形成する。 The agricultural light source lamp in the present disclosure includes a plurality of agricultural light source units arranged in a straight line. In addition, an overlapping region is formed by a region on one side of the irradiation region irradiated by the agricultural light source unit and a region on one side of the irradiation region irradiated by another adjacent agricultural light source unit.
　これにより本開示の農業用光源ユニットによれば、半導体レーザーから放射されるレーザー光が照射する作物の栽培領域において、安価で簡単な構成で作物に光を均一に照射することが可能となる。 Thus, according to the agricultural light source unit of the present disclosure, it is possible to uniformly irradiate the crop with light and a simple configuration in the cultivation area of the crop irradiated with the laser light emitted from the semiconductor laser.
　本開示にかかる農業用光源ユニット、農業用光源灯は、人工的な光源により作物を栽培する作物栽培装置に対して簡単な構成で光強度を略均一化し、安価で高機能な作物の栽培システムを実現する用途に有用である。 An agricultural light source unit and an agricultural light source lamp according to the present disclosure are inexpensive and highly functional crop cultivation systems that have a simple configuration and substantially uniform light intensity with respect to a crop cultivation apparatus that grows crops with an artificial light source. This is useful for realizing the above.
　１　半導体レーザー
　１ａ　レーザー光
　２　コリメートレンズ
　３　ミラー
　４　光拡散素子
　４ａ　マイクロレンズ
　４ｂ　基板
　５，５５　農業用光源ユニット
　５ａ，５ｂ，５ａａ，５ｂｂ　照射領域
　５ｂ１　凸部
　６　レーザー駆動手段
　７　栽培領域
　８　栽培対象
　９　筐体
　１０，１０ａ　農業用光源灯
　２０　農業用光源ユニット
　２１　筐体
　１０１　半導体レーザー
　１０２　光ファイバ
　１０３　走査機構
　１０４　撮像部
　１０９　植物 DESCRIPTION OF SYMBOLS 1 Semiconductor laser 1a Laser light 2 Collimating lens 3 Mirror 4 Light diffusing element 4a Micro lens 4b Substrate 5,55 Agricultural light source unit 5a, 5b, 5aa, 5bb Irradiation area 5b1 Convex part 6 Laser drive means 7 Cultivation area 8 Cultivation object 9 Case 10, 10a Agricultural light source lamp 20 Agricultural light source unit 21 Case 101 Semiconductor laser 102 Optical fiber 103 Scanning mechanism 104 Imaging unit 109 Plant

Claims (5)

  1. 　レーザー光を放射する半導体レーザーと、前記レーザー光を発散光または略平行光とするコリメートレンズと、光拡散素子と、前記半導体レーザーを駆動して発光させるレーザー駆動手段と、で構成された農業用光源ユニットであって、前記レーザー光の光強度分布を、前記光拡散素子によって略均一化して、作物の栽培領域に照射することを特徴とする農業用光源ユニット。 Agricultural use comprising a semiconductor laser that emits laser light, a collimating lens that makes the laser light a diverging light or a substantially parallel light, a light diffusing element, and a laser driving means that drives the semiconductor laser to emit light. An agricultural light source unit, wherein the light intensity distribution of the laser light is substantially uniformed by the light diffusing element and irradiated to a crop cultivation area.
  2. 　前記半導体レーザーからのレーザー光の照射領域を、前記光拡散素子によって略四角形状または略四角形状の各辺の中央部が内側に凹んだ形状に形成して、前記レーザー光を作物の栽培領域に照射することを特徴とする請求項１記載の農業用光源ユニット。 An irradiation area of the laser beam from the semiconductor laser is formed into a shape in which a central portion of each side of the substantially square shape or the substantially square shape is recessed inward by the light diffusing element, and the laser light is used as a crop cultivation area. The agricultural light source unit according to claim 1, wherein the light source unit is irradiated.
  3. 　農業用光源ユニットを、直線状に複数配置して成る農業用光源灯であって、農業用光源ユニットは、レーザー光を放射する半導体レーザーと、前記レーザー光を発散光または略平行光とするコリメートレンズと、光拡散素子と、前記半導体レーザーを駆動して発光させるレーザー駆動手段と、で構成され、前記レーザー光の光強度分布を、前記光拡散素子によって略均一化して、作物の栽培領域に照射する農業用光源灯。 An agricultural light source lamp comprising a plurality of agricultural light source units arranged in a straight line, wherein the agricultural light source unit is a semiconductor laser that emits laser light, and a collimator that converts the laser light into divergent light or substantially parallel light. A lens, a light diffusing element, and a laser driving means for driving the semiconductor laser to emit light, and the light intensity distribution of the laser light is substantially uniformed by the light diffusing element to produce a crop cultivation area. Agricultural light source for irradiation.
  4. 　前記農業用光源ユニットで照射される照射領域の一辺の領域と、隣接した他の農業用光源ユニットで照射される照射領域の一辺の領域とで、重ね合わせた領域を形成する、請求項３記載の農業用光源灯。 The area | region which overlapped with the area | region of one side irradiated with the said agricultural light source unit and the area | region of one side irradiated with the other adjacent agricultural light source unit is formed. Light source for agriculture.
  5. 　農業用光源ユニットで照射される照射領域の一辺の領域と、隣接した他の農業用光源ユニットで照射される照射領域の一辺の領域とで、重ね合わせた領域を形成する、農業用光源灯の配置方法であって、前記照射領域は略四角形状の各辺の中央部が内側に凹んだ形状であり、一の農業用光源灯の前記照射領域の凹部に、他の農業用光源灯の前記照射領域の凸部を重ね合わせるように、かつ前記一の農業用光源灯と前記他の農業用光源灯を略平行に配置することを特徴とする農業用光源灯の配置方法。 An agricultural light source lamp that forms an overlapped area between an area of an irradiation area irradiated by an agricultural light source unit and an area of an irradiation area irradiated by another adjacent agricultural light source unit. In the arrangement method, the irradiation area has a shape in which a central portion of each side of the substantially rectangular shape is recessed inward, and the recess of the irradiation area of one agricultural light source lamp has the above-described one of the other agricultural light source lamps. A method for arranging agricultural light source lamps, wherein the first agricultural light source lamp and the other agricultural light source lamp are arranged substantially parallel to each other so that the projections of the irradiation region are overlapped.
PCT/JP2016/000186 2015-01-19 2016-01-15 Agricultural light source unit, agricultural light source lamp, and method for arranging agricultural light source lamp WO2016117314A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680002038.XA CN107404849B (en) 2015-01-19 2016-01-15 Agriculture light source unit, agriculture illuminator and agricultural illuminator configuration method
JP2016569458A JP6106853B2 (en) 2015-01-19 2016-01-15 Agricultural light source unit, agricultural light source lamp, and arrangement method of agricultural light source lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-007375 2015-01-19
JP2015007375 2015-01-19

Publications (1)

Publication Number Publication Date
WO2016117314A1 true WO2016117314A1 (en) 2016-07-28

Family

ID=56416869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/000186 WO2016117314A1 (en) 2015-01-19 2016-01-15 Agricultural light source unit, agricultural light source lamp, and method for arranging agricultural light source lamp

Country Status (3)

Country Link
JP (1) JP6106853B2 (en)
CN (1) CN107404849B (en)
WO (1) WO2016117314A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3747255A1 (en) * 2019-06-06 2020-12-09 Richard Redpath A method for efficient use of light energy to advance plant growth

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108271582A (en) * 2018-02-26 2018-07-13 汤杰 Anion plant growth lamp system
JP2022519745A (en) * 2019-02-08 2022-03-24 ダブリュ．エル．ゴア アンド アソシエイツ，インコーポレイティド Diffuse reflective curtain for agricultural environment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003112279A (en) * 2001-10-04 2003-04-15 Hitachi Ltd Laser beam irradiating device
JP2011097900A (en) * 2009-11-09 2011-05-19 Sharp Corp Light source apparatus for plant growth and plant growth apparatus
JP2012005453A (en) * 2010-06-28 2012-01-12 Idec Corp Plant cultivation device, and method for cultivation of plant
JP2015029450A (en) * 2013-08-01 2015-02-16 パナソニック株式会社 Light source device for plant cultivation
WO2015040785A1 (en) * 2013-09-19 2015-03-26 パナソニックＩｐマネジメント株式会社 Plant cultivation device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012165665A (en) * 2011-02-10 2012-09-06 Sharp Corp Lighting device, strawberry cultivation system and strawberry cultivation method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003112279A (en) * 2001-10-04 2003-04-15 Hitachi Ltd Laser beam irradiating device
JP2011097900A (en) * 2009-11-09 2011-05-19 Sharp Corp Light source apparatus for plant growth and plant growth apparatus
JP2012005453A (en) * 2010-06-28 2012-01-12 Idec Corp Plant cultivation device, and method for cultivation of plant
JP2015029450A (en) * 2013-08-01 2015-02-16 パナソニック株式会社 Light source device for plant cultivation
WO2015040785A1 (en) * 2013-09-19 2015-03-26 パナソニックＩｐマネジメント株式会社 Plant cultivation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3747255A1 (en) * 2019-06-06 2020-12-09 Richard Redpath A method for efficient use of light energy to advance plant growth

Also Published As

Publication number Publication date
CN107404849A (en) 2017-11-28
CN107404849B (en) 2018-12-04
JP6106853B2 (en) 2017-04-05
JPWO2016117314A1 (en) 2017-04-27

Similar Documents

Publication Publication Date Title
US10085385B2 (en) Plant cultivation apparatus
RU2667769C2 (en) Horticulture lighting device and method for stimulating plant growth and bio-rhythm of plants
JP6106853B2 (en) Agricultural light source unit, agricultural light source lamp, and arrangement method of agricultural light source lamp
US20180092182A1 (en) Led structure with a dynamic spectrum and a method
RU2015104352A (en) LIGHTING DEVICE, ABLE TO PROVIDE GARDEN LIGHTING, AND METHOD OF LIGHTING IN GARDENING
CA3041020C (en) Light emitting device for plant growth with variable wavelength using quantum dots
US20120020071A1 (en) High performance led grow light
US8360602B2 (en) Trolly and illumination module thereof
WO2020033127A1 (en) Tunable led light array for horticulture
US20200000043A1 (en) Under canopy electromagnetic radiation device
JP2017121197A (en) Organism raising system, lighting apparatus, and organism raising method in which lighting in accordance with an organism growing range is possible
JP5844458B2 (en) Plant grower
KR101619461B1 (en) led apparatus for raising seeding
WO2013031400A1 (en) Illumination device and plant cultivation device
JP2015077097A (en) Plant cultivation device, plant cultivation method and plant cultivation factory
KR20170110259A (en) Optical device for using growth of crops
JP2018130101A (en) Lighting unit for plant cultivation and lighting device
JP5812965B2 (en) Lighting device for plant factory using artificial light
KR20120021832A (en) Bulb type led lamp
JP3203925U (en) Light output control device
JP6061153B2 (en) Illumination device and illumination drive device
KR101593584B1 (en) LED Light Apparatus For Rooting Grafted Seedlings
CN216789972U (en) Vegetation light source module and vegetation lamp
JP2020048534A (en) Plant cultivation lighting device
JP2015130838A (en) Lighting device for plant growth and method for plant growth

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16739925

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016569458

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16739925

Country of ref document: EP

Kind code of ref document: A1