JP2016219113A - Illumination device and optical member - Google Patents

Illumination device and optical member Download PDF

Info

Publication number
JP2016219113A
JP2016219113A JP2015099167A JP2015099167A JP2016219113A JP 2016219113 A JP2016219113 A JP 2016219113A JP 2015099167 A JP2015099167 A JP 2015099167A JP 2015099167 A JP2015099167 A JP 2015099167A JP 2016219113 A JP2016219113 A JP 2016219113A
Authority
JP
Japan
Prior art keywords
light
optical member
emitted
angle
shaping
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2015099167A
Other languages
Japanese (ja)
Inventor
真知子 岩崎
Machiko Iwasaki
真知子 岩崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koha Co Ltd
Original Assignee
Koha Co Ltd
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 Koha Co Ltd filed Critical Koha Co Ltd
Priority to JP2015099167A priority Critical patent/JP2016219113A/en
Priority to PCT/JP2016/063663 priority patent/WO2016181905A1/en
Publication of JP2016219113A publication Critical patent/JP2016219113A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/10—Refractors for light sources comprising photoluminescent material

Abstract

PROBLEM TO BE SOLVED: To provide an illumination device and an optical member which radiate light by changing a light distribution angle while enhancing utilization efficiency of light, and which can acquire collimated parallel light.SOLUTION: An LED illumination device 100 includes: an LED element 1; a first optical member 130 having a first shaping lens part 131 for condensing a center luminous flux lemitted from the LED element 1 and for emitting narrow-angle light in an optical axis 110a direction, and a second shaping lens 132 for condensing a peripheral luminous flux lemitted to the periphery of the center luminous flux lfrom the LED element 1 and for emitting narrow-angle light in the optical axis 110a direction; and a second optical member 140 provided so as to be able to change a distance with the first optical member 130 in the optical axis 110a direction, and for condensing the light emitted from the first optical member 130 in a predetermined distance dand for making it into parallel light.SELECTED DRAWING: Figure 1

Description

本発明は、光源からの光を集光し、集光した光の配光角を変化させて照射する照明装置及び光学部材に関する。   The present invention relates to an illumination device and an optical member that collects light from a light source and irradiates the light by changing a light distribution angle of the collected light.

近年、光源からの光を集光し、集光した光の配光角を変化させて照射するものがある（特許文献１参照）。   In recent years, there is one that collects light from a light source and irradiates it by changing a light distribution angle of the collected light (see Patent Document 1).

この照明装置は、広角配光の光源と、光源からの光を集光して平行光とする光学部材と、平行光を焦点Ｆに集光する第１の凸レンズと、焦点Ｆよりも光源から離れた領域に位置する第２の凸レンズとを有して、第２の凸レンズを光源から遠ざける方向に動かすことで、焦点Ｆを仮想光源として第２の凸レンズの焦点Ｆからの距離に応じて、光の配光角を狭角から広角に連続的に変化させる。広角配光の光源からの光を集光してから配光角を変化させるため、光の利用効率が高い。   This illuminating device includes a light source with a wide-angle light distribution, an optical member that condenses light from the light source into parallel light, a first convex lens that condenses the parallel light at the focal point F, and a light source that is closer than the focal point F. A second convex lens located in a distant area, and moving the second convex lens away from the light source, thereby using the focal point F as a virtual light source according to the distance from the focal point F of the second convex lens, The light distribution angle is continuously changed from a narrow angle to a wide angle. Since the light distribution angle is changed after the light from the light source of the wide angle light distribution is condensed, the light use efficiency is high.

特開２０１２−５９５７５号公報JP 2012-59575 A

しかし、従来の照明装置は、光の利用効率を高めつつ、光の配光角を狭角から広角に連続的に変化させるものであるが、平行光を照射するために第２の凸レンズの焦点Ｆからの距離を調整したとしても、焦点Ｆの仮想光源が実際の光源よりも広がりをもったものとなり、十分にコリメートできない、という問題がある。   However, the conventional illuminating device continuously changes the light distribution angle from a narrow angle to a wide angle while improving the light utilization efficiency. However, the focus of the second convex lens is used to irradiate parallel light. Even if the distance from F is adjusted, there is a problem that the virtual light source at the focal point F becomes wider than the actual light source and cannot be sufficiently collimated.

したがって、本発明の目的は、光の利用効率を高めつつ、配光角を変化させて光を照射するとともに、コリメートされた平行光を得ることができる照明装置及び光学部材を提供することにある。   Accordingly, an object of the present invention is to provide an illuminating device and an optical member that can irradiate light while changing the light distribution angle while improving the light use efficiency, and obtain collimated parallel light. .

［１］半導体発光素子と、
前記半導体発光素子から出射される中心光束を集光して光軸方向に狭角光を出射する第１整形部と、前記半導体発光素子から前記中心光束の周辺に出射される周辺光束を集光して前記光軸方向に狭角光を出射する第２整形部とを有する第１の光学部材と、
前記第１の光学部材との前記光軸方向の距離を可変に設けられ、予め定めた距離において前記第１の光学部材から出射される光を集光して平行光にする第２の光学部材とを備える照明装置。
［２］前記第１整形部及び前記第２整形部は、共通の焦点を有する前記１に記載の照明装置。
［３］前記第１整形部及び前記第２整形部は、それぞれ異なる焦点を有し、
前記第２の光学部材は、前記予め定めた距離において、前記第１整形部から出射される光を平行光とする中央レンズ部と、前記第２整形部から出射される光を平行光とする周辺レンズ部とを有する前記［１］に記載の照明装置。
［４］前記第１の光学部材の第２整形部は、前記半導体発光素子から出射される前記周辺光束を全反射する全反射面を有する前記［１］−［３］に記載の照明装置。
［５］半導体発光素子から出射される中心光束を集光して光軸方向に狭角光を出射する第１整形部と、前記半導体発光素子から前記中心光束の周辺に出射される周辺光束を集光して前記光軸方向に狭角光を出射する第２整形部とを有する第１の光学部材と、
前記第１の光学部材との前記光軸方向の距離を可変に設けられ、予め定めた距離において前記第１の光学部材から出射される光を集光して平行光にする第２の光学部材とを備える光学部材。 [1] a semiconductor light emitting device;
A first shaping unit that collects a central light beam emitted from the semiconductor light emitting element and emits narrow-angle light in an optical axis direction, and a peripheral light beam emitted from the semiconductor light emitting element to the periphery of the central light beam A first optical member having a second shaping portion that emits narrow-angle light in the optical axis direction;
A second optical member that is variably provided with a distance in the optical axis direction from the first optical member, and condenses light emitted from the first optical member at a predetermined distance to make parallel light. A lighting device comprising:
[2] The illumination device according to [1], wherein the first shaping unit and the second shaping unit have a common focal point.
[3] The first shaping unit and the second shaping unit have different focal points,
The second optical member has a central lens portion that makes light emitted from the first shaping portion parallel light at the predetermined distance, and makes light emitted from the second shaping portion parallel light. The illumination device according to [1], including a peripheral lens unit.
[4] The illumination device according to [1] to [3], wherein the second shaping unit of the first optical member has a total reflection surface that totally reflects the peripheral light beam emitted from the semiconductor light emitting element.
[5] A first shaping unit that collects the central light beam emitted from the semiconductor light emitting element and emits narrow-angle light in the optical axis direction; and a peripheral light beam emitted from the semiconductor light emitting element to the periphery of the central light beam. A first optical member having a second shaping section that condenses and emits narrow-angle light in the optical axis direction;
A second optical member that is variably provided with a distance in the optical axis direction from the first optical member, and condenses light emitted from the first optical member at a predetermined distance to make parallel light. An optical member comprising:

本発明によれば、光の利用効率を高めつつ、配光角を変化させて光を照射するとともに、コリメートされた平行光を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, while improving the utilization efficiency of light, while irradiating light by changing a light distribution angle, collimated parallel light can be obtained.

図１は、本発明の第１の実施の形態に係る照明装置の概略の構成例を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a schematic configuration example of a lighting apparatus according to the first embodiment of the present invention. 図２は、ＬＥＤ光源から出射された光の光路を示す概略図である。FIG. 2 is a schematic view showing an optical path of light emitted from the LED light source. 図３は、第１の光学部材と第２の光学部材との距離を変更した場合のＬＥＤ光源から出射された光の光路を示す概略図である。FIG. 3 is a schematic diagram showing an optical path of light emitted from the LED light source when the distance between the first optical member and the second optical member is changed. 図４は、本発明の第２の実施の形態に係る照明装置の概略の構成例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing a schematic configuration example of the illumination device according to the second embodiment of the present invention. 図５は、ＬＥＤ光源から出射された光の光路を示す概略図である。FIG. 5 is a schematic view showing an optical path of light emitted from the LED light source.

以下、本発明の実施の形態及び実施例について図面を参照して説明する。なお、各図中、実質的に同一の機能を有する構成要素については、同一の符号を付してその重複した説明を省略する。   Hereinafter, embodiments and examples of the present invention will be described with reference to the drawings. In addition, in each figure, about the component which has the substantially same function, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

［実施の形態］
図１は、本発明の第１の実施の形態に係る照明装置の概略の構成例を示す縦断面図である。また、図２は、ＬＥＤ光源１１０から出射された光の光路を示す概略図である。また、図３は、第１の光学部材と第２の光学部材との距離を変更した場合のＬＥＤ光源１１０から出射された光の光路を示す概略図である。 [Embodiment]
FIG. 1 is a longitudinal sectional view showing a schematic configuration example of a lighting apparatus according to the first embodiment of the present invention. FIG. 2 is a schematic diagram showing an optical path of light emitted from the LED light source 110. FIG. 3 is a schematic diagram showing an optical path of light emitted from the LED light source 110 when the distance between the first optical member and the second optical member is changed.

（照明装置の構成）
この照明装置１００は、通電方向が縦方向のＬＥＤ素子を用いた広角配光の光源であるＬＥＤ光源１１０と、ＬＥＤ光源１１０から広角の配光角で出射された光を集光して狭角の配光角で光を出射する第１の光学部材１３０と、第１の光学部材１３０との距離を変化させるように移動可能に設置され、第１の光学部材１３０から出射された光の配光角を変化させる第２の光学部材１４０とを備える。なお、ＬＥＤ素子は、半導体発光素子の一例である。第１の光学部材１３０及び第２の光学部材１４０は、光学系の一例である。 (Configuration of lighting device)
The illumination device 100 has a narrow angle by condensing light emitted from the LED light source 110 with a wide light distribution angle and an LED light source 110 that is a wide angle light distribution light source using LED elements whose energization direction is vertical. The first optical member 130 that emits light at a light distribution angle and the first optical member 130 are movably installed so that the distance between the first optical member 130 and the first optical member 130 is changed. And a second optical member 140 that changes the light angle. The LED element is an example of a semiconductor light emitting element. The first optical member 130 and the second optical member 140 are an example of an optical system.

（ＬＥＤ光源の構成）
ＬＥＤ光源１１０は、ＬＥＤ素子１と、一例として、銅ブロック１１１及び放熱器１１７を含む放熱構造とを有する。なお、放熱構造は樹脂基板やアルミ基板を用いてもよい。また、ＬＥＤ光源１１０は、ＬＥＤ素子が発する第１の色の光で励起して第２の色の光を発する蛍光体をさらに備えてもよい。蛍光体は、ＬＥＤ素子１の表面に樹脂を介して粉末状のものを付着させてもよく、樹脂に蛍光体を含有させたものをＬＥＤ素子１の表面に形成してもよい。例えば、ＬＥＤ素子１として、青色系の色の光を発するＬＥＤ素子を用い、蛍光体として、青色系の色の光を黄色系の色の光に変換するＹＡＧ系蛍光体、ＢＯＳ系蛍光体等を用いることにより、ＬＥＤ光源１１０は、ＬＥＤ素子が発する青色系の色の光と蛍光体が変換して出力する黄色系の色の光とが混合されて白色光を出射する。また、ＬＥＤ光源１１０から出射する光の色は、青色系の色に限定されず、また混合色も白色に限定されない。 (Configuration of LED light source)
The LED light source 110 includes the LED element 1 and, as an example, a heat dissipation structure including a copper block 111 and a radiator 117. The heat dissipation structure may be a resin substrate or an aluminum substrate. The LED light source 110 may further include a phosphor that emits light of the second color by being excited by the first color of light emitted from the LED element. The phosphor may be a powdery substance attached to the surface of the LED element 1 via a resin, or a phosphor containing a phosphor may be formed on the surface of the LED element 1. For example, an LED element that emits light of a blue color is used as the LED element 1, and a YAG phosphor that converts blue light into yellow light, a BOS phosphor, or the like as a phosphor. By using the LED light source 110, the blue light emitted from the LED element and the yellow light emitted from the phosphor are mixed and emitted to emit white light. Further, the color of light emitted from the LED light source 110 is not limited to a blue color, and the mixed color is not limited to white.

ＬＥＤ素子１は、一例として、ｎ型半導体基板と、ｎ型半導体基板の表面を部分的に分散して覆うように形成され、ｎ型半導体基板との屈折率の差が０．１５以下である誘電体層と、ｎ型半導体基板上に誘電体層を介して形成され、誘電体層、及びｎ型半導体基板の表面の誘電体層に覆われていない部分に接触するｎ型半導体層と、ｎ型半導体層上に形成された発光層と、発光層上に形成されたｐ型半導体層と、ｎ型半導体基板の誘電体層が形成された面と反対側に形成されたｎ型電極と、ｐ型半導体層上に形成されたｐ型電極とを備える。   For example, the LED element 1 is formed so as to partially disperse and cover an n-type semiconductor substrate and the surface of the n-type semiconductor substrate, and a difference in refractive index from the n-type semiconductor substrate is 0.15 or less. A dielectric layer, an n-type semiconductor layer formed on the n-type semiconductor substrate via the dielectric layer, and in contact with the dielectric layer and a portion of the surface of the n-type semiconductor substrate that is not covered with the dielectric layer; a light-emitting layer formed on the n-type semiconductor layer, a p-type semiconductor layer formed on the light-emitting layer, an n-type electrode formed on the opposite side of the surface on which the dielectric layer of the n-type semiconductor substrate is formed, And a p-type electrode formed on the p-type semiconductor layer.

（第１の光学部材の構成）
第１の光学部材１３０は、ＬＥＤ光源１１０から出射される光束を集光して狭角光とする第１の整形レンズ部１３１と、ＬＥＤ光源１１０から出射される光束が入射される入射面１３２ｂが略円柱状を有し、入射面１３２ｂに入射した光束を集光して狭角光とする第２の整形レンズ部１３２とを備える。 (Configuration of first optical member)
The first optical member 130 includes a first shaping lens unit 131 that condenses the light beam emitted from the LED light source 110 to form narrow-angle light, and an incident surface 132b on which the light beam emitted from the LED light source 110 is incident. Has a substantially cylindrical shape, and includes a second shaping lens portion 132 that condenses the light beam incident on the incident surface 132b to form narrow-angle light.

第１及び第２の整形レンズ部１３１、１３２は、例えば、アクリル樹脂等の透明樹脂から形成される。ここで、第１の整形レンズ部１３１は、第１の整形部の一例であり、第２の整形レンズ部１３２は、第２の整形部の一例である。図１中、Ｐは点光源の位置を示す。   The 1st and 2nd shaping lens parts 131 and 132 are formed from transparent resins, such as an acrylic resin, for example. Here, the first shaping lens unit 131 is an example of a first shaping unit, and the second shaping lens unit 132 is an example of a second shaping unit. In FIG. 1, P indicates the position of the point light source.

第１の光学部材１３０は、光軸１１０ａを中心として回転対称な形状を有しており、最大外径Ｄ４、最小外径Ｄ３、光軸１１０ａに沿う方向の長さＬ０の形状を有する。また、ＬＥＤ素子１が格納される空間は内径Ｄ２、高さＬ３の略円柱形状を有する。 The first optical member 130 has a rotationally symmetric shape around the optical axis 110a, and has a shape with a maximum outer diameter D 4 , a minimum outer diameter D 3 , and a length L 0 in the direction along the optical axis 110a. Have. The space in which the LED element 1 is stored has a substantially cylindrical shape having an inner diameter D 2 and a height L 3 .

第１の整形レンズ部１３１は、直径Ｄ１、厚みＬ１の凸レンズにより構成され、平坦な入射面１３１ａと、球面状の出射面１３１ｂとを有する。ここで、第１の整形レンズ部を透過して照射される光束を中心光束ｌｃと呼ぶこととする。なお、中心光束ｌｃを狭角とするものであれば、入射面に凸レンズを設けて出射面を平坦としてもよいし、入射面及び出射面に凸レンズを設けてもよい。 The first shaping lens portion 131 is constituted by a convex lens having a diameter D 1 and a thickness L 1 and has a flat incident surface 131a and a spherical exit surface 131b. Here, a light beam transmitted through the first shaping lens unit is referred to as a central light beam l c . As long as the central light beam l c has a narrow angle, a convex lens may be provided on the entrance surface to make the exit surface flat, or convex lenses may be provided on the entrance surface and the exit surface.

第２の整形レンズ部１３２は、ＬＥＤ光源１１０の光軸１１０ａに垂直に配置される基準面１３２ａと、ＬＥＤ光源１１０から出射された光（水平方向の光も含む。）が入射する円柱状の入射面１３２ｂと、入射面１３２ｂに入射して屈折した光を反射させる反射面１３２ｃと、反射面１３２ｃで反射した光が出射する出射面１３２ｄとを備える。ここで、第２の整形レンズ部１３２を透過して照射される光束を周辺光束ｌｏと呼ぶこととする。 The second shaping lens unit 132 has a reference surface 132a disposed perpendicular to the optical axis 110a of the LED light source 110 and a cylindrical shape on which light (including light in the horizontal direction) emitted from the LED light source 110 is incident. An incident surface 132b, a reflecting surface 132c that reflects light that is refracted by being incident on the incident surface 132b, and an exit surface 132d that emits light reflected by the reflecting surface 132c are provided. Here, a light beam transmitted through the second shaping lens unit 132 and irradiated is referred to as a peripheral light beam l o .

第２の整形レンズ部１３２の反射面１３２ｃは、入射面１３２ｂで屈折した光が臨界角より大きい角度で入射できるように設計され、かつ、反射した光が光軸１１０ａと反対側へ傾くように設計されるものであり、光軸１１０ａを中心とし、放物線を回転して得られる回転放物面又はベジェ曲線等の非球面形状を回転して得られる面に近似した面となっている。なお、第２の整形レンズ部１３２の反射面１３２ｃの代わりに金属板等の反射鏡を用いてもよい。   The reflecting surface 132c of the second shaping lens unit 132 is designed so that the light refracted by the incident surface 132b can be incident at an angle larger than the critical angle, and the reflected light is inclined to the side opposite to the optical axis 110a. The surface is designed and approximates to a surface obtained by rotating a paraboloid or an aspherical shape such as a Bezier curve obtained by rotating a parabola around the optical axis 110a. A reflecting mirror such as a metal plate may be used instead of the reflecting surface 132c of the second shaping lens portion 132.

なお、第２の整形レンズ部１３２の出射面１３２ｄは、光軸と直交する環状の平面である。また、第２の整形レンズ１３２の出射面１３２ｄは、光軸と直交する面に対して所定の角度を有する環状の面又は曲面であってもよい。   The exit surface 132d of the second shaping lens unit 132 is an annular plane orthogonal to the optical axis. Further, the exit surface 132d of the second shaping lens 132 may be an annular surface or a curved surface having a predetermined angle with respect to a surface orthogonal to the optical axis.

第１の整形レンズ部１３１と第２の整形レンズ部１３２とは図２に示す共通の仮想光源位置Ｆを有するものとする。つまり、第１の光学部材１３０から出射される中心光束ｌｃと周辺光束ｌｏの見かけ上の光源位置は仮想光源位置Ｆとなる。 The first shaping lens unit 131 and the second shaping lens unit 132 have a common virtual light source position F shown in FIG. That is, the apparent light source position of the central light beam l c and the peripheral light beam l o emitted from the first optical member 130 is the virtual light source position F.

（第２の光学部材）
第２の光学部材１４０は、第１の光学部材１３０との距離ｄ０において、第１の光学部材１３０の仮想光源位置と第２の光学部材１４０の焦点を一致させることで、第１の光学部材１３０から出射される中心光束ｌｃ及び周辺光束ｌｏを平行光として配光制御する凸レンズである。なお、第２の光学部材１４０は、入射面に凸レンズを設けて出射面を平坦としてもよいし、入射面及び出射面に凸レンズを設けてもよい。また、仮想光源位置が第１の光学部材１３０と第２の光学部材１４０とのある場合は、第２の光学部材１４０を凹レンズで構成してもよい。 (Second optical member)
The second optical member 140 matches the virtual light source position of the first optical member 130 with the focal point of the second optical member 140 at the distance d 0 with respect to the first optical member 130, so that the first optical member This is a convex lens that controls the light distribution of the central light beam l c and the peripheral light beam l o emitted from the member 130 as parallel light. The second optical member 140 may be provided with a convex lens on the incident surface to make the output surface flat, or may be provided with a convex lens on the incident surface and the output surface. Moreover, when the virtual light source position is the first optical member 130 and the second optical member 140, the second optical member 140 may be formed of a concave lens.

また、図３に示すように、第２の光学部材１４０は、第１の光学部材１３０との距離がｄ０より大きいｄ１において、第１の光学部材１３０から出射される中心光束ｌｃ及び周辺光束ｌｏを平行光（図中破線）より光軸１１０ａ側に配光する。なお、図示していないが同様に、第２の光学部材１４０は、第１の光学部材１３０との距離がｄ０より小さい距離において、第１の光学部材１３０から出射される中心光束ｌｃ及び周辺光束ｌｏを平行光より光軸１１０ａと反対側に配光する。つまり、第２の光学部材１４０を移動することで出射光の配光角が制御される。 In addition, as shown in FIG. 3, the second optical member 140 has a central light beam l c emitted from the first optical member 130 at a distance d 1 that is greater than d 0 and the distance from the first optical member 130, and The peripheral light beam l o is distributed from the parallel light (broken line in the figure) toward the optical axis 110a. Although not shown, similarly, the second optical member 140 has a central light beam l c emitted from the first optical member 130 and a distance from the first optical member 130 at a distance smaller than d 0 and The peripheral light beam l o is distributed from the parallel light to the side opposite to the optical axis 110a. That is, the light distribution angle of the emitted light is controlled by moving the second optical member 140.

なお、第２の光学部材１４０は、光軸１１０ａを中心として回転対称な形状を有する。また、第１の光学部材１３０及び第２の光学部材１４０は、透明樹脂を射出成型してもよく、ガラスを削り出し加工して形成してもよい。   The second optical member 140 has a rotationally symmetric shape about the optical axis 110a. Further, the first optical member 130 and the second optical member 140 may be formed by injection molding a transparent resin, or by cutting out glass.

（第１の実施の形態の効果）
上記第１の実施の形態によれば、以下の効果を奏する。
（１）ＬＥＤ素子１の出射する広角配光の光を第１の光学部材１３０により集光して狭角配光とし、第１の光学部材１３０と第２の光学部材１４０との距離を可変として、距離ｄ０において第１の光学部材１３０から出射される光束を第２の光学部材１４０で平行光に整形するよう構成したため第１の光学部材１３０と第２の光学部材１４０との距離を変化させることで、第１の光学部材から出射される光の配光角を変化させることができる。
（２）第１の光学部材１３０により広角配光のＬＥＤ素子１から出射される光を集光したため、光の利用効率の高い照明装置を実現できる。
（３）第１の光学部材１３０は共通化し、第２の光学部材の曲率を変更することで照明装置のバリエーションを容易に増やすことができる。 (Effects of the first embodiment)
According to the first embodiment, the following effects can be obtained.
(1) Wide-angle light distribution light emitted from the LED element 1 is condensed by the first optical member 130 to form a narrow-angle light distribution, and the distance between the first optical member 130 and the second optical member 140 is variable. Since the light beam emitted from the first optical member 130 at the distance d 0 is shaped into parallel light by the second optical member 140, the distance between the first optical member 130 and the second optical member 140 is By changing it, the light distribution angle of the light emitted from the first optical member can be changed.
(2) Since the light emitted from the LED element 1 having the wide-angle light distribution is collected by the first optical member 130, an illumination device with high light use efficiency can be realized.
(3) The first optical member 130 is made common and the variation of the illumination device can be easily increased by changing the curvature of the second optical member.

［第２の実施の形態］
第２の実施の形態は、第１の光学部材１３０Ａの第１の整形レンズ部１３１Ａと第２の整形レンズ部１３２Ａとが共通の仮想光源位置を有しない点で第１の実施の形態と異なる。なお、第１の実施の形態と共通する構成については共通の符号を付している。 [Second Embodiment]
The second embodiment differs from the first embodiment in that the first shaping lens portion 131A and the second shaping lens portion 132A of the first optical member 130A do not have a common virtual light source position. . In addition, about the structure which is common in 1st Embodiment, the common code | symbol is attached | subjected.

図４は、本発明の第２の実施の形態に係る照明装置の概略の構成例を示す縦断面図である。また、図５は、ＬＥＤ光源１１０から出射された光の光路を示す概略図である。   FIG. 4 is a longitudinal sectional view showing a schematic configuration example of the illumination device according to the second embodiment of the present invention. FIG. 5 is a schematic view showing an optical path of light emitted from the LED light source 110.

（照明装置の構成）
この照明装置１００Ａは、ＬＥＤ光源１１０と、ＬＥＤ光源１１０から出射された光を集光して狭角の配光角で光を出射する第１の光学部材１３０Ａと、第１の光学部材１３０Ａから出射された光の配光角を変化させる第２の光学部材１４０Ａとを備える。 (Configuration of lighting device)
The illumination device 100A includes an LED light source 110, a first optical member 130A that condenses light emitted from the LED light source 110, and emits light at a narrow light distribution angle, and a first optical member 130A. A second optical member 140A that changes the light distribution angle of the emitted light.

（第１の光学部材の構成）
第１の光学部材１３０Ａは、ＬＥＤ光源１１０から出射される光束を狭角光に整形する第１の整形レンズ部１３１Ａと、ＬＥＤ光源１１０から出射される光束が入射される入射面１３２ｂ’が略円柱状を有し、入射面１３２ｂ’に入射した光束を集光して狭角光とする第２の整形レンズ部１３２Ａとを備える。 (Configuration of first optical member)
The first optical member 130A has a first shaping lens portion 131A that shapes the light beam emitted from the LED light source 110 into narrow-angle light, and an incident surface 132b ′ on which the light beam emitted from the LED light source 110 is incident. A second shaping lens portion 132A having a cylindrical shape and condensing the light beam incident on the incident surface 132b ′ to form narrow-angle light.

第１の光学部材１３０Ａは、光軸１１０ａを中心として回転対称な形状を有しており、最大外径Ｄ４、最小外径Ｄ３、光軸１１０ａに沿う方向の長さＬ０の形状を有する。また、ＬＥＤ素子１が格納される空間は内径Ｄ２、高さＬ３の略円柱形状を有する。 The first optical member 130A has a rotationally symmetric shape around the optical axis 110a, and has a shape with a maximum outer diameter D 4 , a minimum outer diameter D 3 , and a length L 0 in the direction along the optical axis 110a. Have. The space in which the LED element 1 is stored has a substantially cylindrical shape having an inner diameter D 2 and a height L 3 .

第１の整形レンズ部１３１Ａは、直径Ｄ１、厚みＬ１の凸レンズにより構成され、平坦な入射面１３１ａと、球面状の出射面１３１ｂとを有する。ここで、第１の整形レンズ部を透過して照射される光束を中心光束ｌｃと呼ぶこととする。なお、中心光束ｌｃを狭角とするものであれば、入射面に凸レンズを設けて出射面を平坦としてもよいし、入射面及び出射面に凸レンズを設けてもよい。 The first shaping lens portion 131A is constituted by a convex lens having a diameter D 1 and a thickness L 1 and has a flat incident surface 131a and a spherical exit surface 131b. Here, a light beam transmitted through the first shaping lens unit is referred to as a central light beam l c . As long as the central light beam l c has a narrow angle, a convex lens may be provided on the entrance surface to make the exit surface flat, or convex lenses may be provided on the entrance surface and the exit surface.

第２の整形レンズ部１３２Ａは、ＬＥＤ光源１１０の光軸１１０ａに垂直に配置される基準面１３２ａ’と、ＬＥＤ光源１１０から出射された光が入射する円柱状の入射面１３２ｂ’と、入射面１３２ｂ’に入射した光を反射させる反射面１３２ｃ’と、反射面１３２ｃ’で反射した光が出射する出射面１３２ｄ’とを備える。ここで、第２の整形レンズ部１３２Ａを透過して照射される光束を周辺光束ｌｏと呼ぶこととする。 The second shaping lens unit 132A includes a reference surface 132a ′ arranged perpendicular to the optical axis 110a of the LED light source 110, a cylindrical incident surface 132b ′ on which light emitted from the LED light source 110 is incident, and an incident surface. A reflecting surface 132c ′ for reflecting the light incident on 132b ′ and an emitting surface 132d ′ for emitting the light reflected by the reflecting surface 132c ′ are provided. Here, the light beam that is irradiated through the second shaping lens portion 132A is referred to as a peripheral light beam l o .

第２の整形レンズ部１３２Ａの反射面１３２ｃ’は、入射面１３２ｂ’で屈折した光が臨界角より大きい角度で入射できるように設計され、光軸１１０ａを中心とし、放物線を回転して得られる回転放物面又はベジェ曲線等の非球面形状を回転して得られる面に近似した面となっている。なお、第２の整形レンズ部１３２Ａの反射面１３２ｃ’の代わりに金属板等の反射鏡を用いてもよい。   The reflecting surface 132c ′ of the second shaping lens portion 132A is designed so that light refracted by the incident surface 132b ′ can be incident at an angle larger than the critical angle, and is obtained by rotating a parabola around the optical axis 110a. The surface approximates a surface obtained by rotating an aspherical surface such as a paraboloid of revolution or a Bezier curve. Note that a reflecting mirror such as a metal plate may be used instead of the reflecting surface 132c 'of the second shaping lens portion 132A.

なお、第２の整形レンズ部１３２Ａの出射面１３２ｄ’は、光軸と直交する面に対して所定の角度を有する環状の面又は曲面である。出射面１３２ｄ’の角度は、出射面１３２ｄ’から出射する光が光軸１１０ａと反対側へ傾くような角度に設計される。また、第２の整形レンズ部１３２Ａの出射面１３２ｄ’は、出射面１３２ｄ’から出射する光が光軸１１０ａと反対側へ傾くものであれば光軸と直交する環状の平面であってもよい。   The exit surface 132d 'of the second shaping lens portion 132A is an annular surface or curved surface having a predetermined angle with respect to a surface orthogonal to the optical axis. The angle of the exit surface 132d 'is designed such that the light emitted from the exit surface 132d' is inclined to the side opposite to the optical axis 110a. Further, the emission surface 132d ′ of the second shaping lens portion 132A may be an annular plane orthogonal to the optical axis as long as the light emitted from the emission surface 132d ′ is inclined to the side opposite to the optical axis 110a. .

第１の整形レンズ部１３１Ａと第２の整形レンズ部１３２Ａとは図５に示すようにそれぞれ異なる仮想光源位置Ｆｃと仮想光源位置Ｆｏとを有するものとする。つまり、第１の光学部材１３０Ａから出射される中心光束ｌｃと周辺光束ｌｏの見かけ上の光源位置はそれぞれ仮想光源位置Ｆｃと仮想光源位置Ｆｏとなる。 Shall have a first and shaping lens portion 131A and the second and the shaping lens portion 132A respectively different as shown in FIG. 5 virtual source position F c virtual source position F o. That is, the apparent light source positions of the central light beam l c and the peripheral light beam l o emitted from the first optical member 130A are the virtual light source position F c and the virtual light source position F o , respectively.

（第２の光学部材）
第２の光学部材１４０Ａは、周辺レンズ部１４１Ａ及び中心レンズ部１４２Ａを有する。周辺レンズ部１４１Ａは、第１の光学部材１３０Ａと第２の光学部材１４０Ａの距離ｄ２において、第１の光学部材１３０Ａの仮想光源位置Ｆｏと周辺レンズ部１４１Ａの焦点を一致させることで、第１の光学部材１３０Ａから出射される周辺光束ｌｏを平行光に整形する凸レンズである。また、中心レンズ部１４２Ａは、第１の光学部材１３０Ａと第２の光学部材１４０Ａの距離ｄ２において、第１の光学部材１３０Ａの仮想光源位置Ｆｃと中心レンズ部１４２Ａの焦点を一致させることで、第１の光学部材１３０Ａから出射される中心光束ｌｃを平行光に整形する凸レンズである。なお、第２の光学部材１４０Ａは、入射面に凸レンズを設けて出射面を平坦としてもよいし、入射面及び出射面に凸レンズを設けてもよい。また、仮想光源位置が第１の光学部材１３０Ａと第２の光学部材１４０Ａとのある場合は、第２の光学部材１４０Ａを凹レンズで構成してもよい。 (Second optical member)
The second optical member 140A has a peripheral lens portion 141A and a central lens portion 142A. Peripheral lens portion 141A is at a distance d 2 of the first optical member 130A and the second optical member 140A, by matching the focal point of the virtual source position F o and a peripheral lens portion 141A of the first optical member 130A, This is a convex lens that shapes the peripheral light beam l o emitted from the first optical member 130A into parallel light. The center lens portion 142A is at a distance d 2 of the first optical member 130A and the second optical member 140A, to match the focal point of the virtual source position F c and the center lens portion 142A of the first optical member 130A in a convex lens for shaping the center beam l c emitted from the first optical member 130A into parallel light. Note that the second optical member 140A may be provided with a convex lens on the incident surface and the output surface may be flat, or may be provided with a convex lens on the incident surface and the output surface. Further, when the virtual light source position is the first optical member 130A and the second optical member 140A, the second optical member 140A may be configured by a concave lens.

第２の光学部材１４０Ａは、第１の光学部材１３０Ａとの距離がｄ２より大きい場合において、第１の光学部材１３０Ａから出射される中心光束ｌｃ及び周辺光束ｌｏを平行光より光軸１１０ａ側に配光する。また、同様に、第２の光学部材１４０Ａは、第１の光学部材１３０Ａとの距離がｄ２より小さい場合において、第１の光学部材１３０Ａから出射される中心光束ｌｃ及び周辺光束ｌｏを平行光より光軸１１０ａと反対側に配光する。 When the distance between the second optical member 140A and the first optical member 130A is greater than d 2 , the second optical member 140A causes the central light beam l c and the peripheral light beam l o emitted from the first optical member 130A to be optical axes from parallel light. The light is distributed to the 110a side. Similarly, the second optical member 140A generates the central light beam l c and the peripheral light beam l o emitted from the first optical member 130A when the distance from the first optical member 130A is smaller than d 2. The light is distributed from the parallel light to the side opposite to the optical axis 110a.

なお、第２の光学部材１４０Ａは、光軸１１０ａを中心として回転対称な形状を有する。また、第１の光学部材１３０Ａ及び第２の光学部材１４０Ａは、透明樹脂を射出成型してもよく、ガラスを削り出し加工して形成してもよい。   The second optical member 140A has a rotationally symmetric shape about the optical axis 110a. Further, the first optical member 130A and the second optical member 140A may be formed by injection molding a transparent resin or by cutting glass.

（第２の実施の形態の効果）
上記第２の実施の形態によれば、第１の実施の形態の効果に加えて以下の効果を奏する。
第１の光学部材１３０Ａの第１の整形レンズ部１３１Ａから出射される中心光束ｌｃを第２の光学部材１４０Ａの中心レンズ部１４２Ａで整形し、第１の光学部材１３０Ａの第２の整形レンズ部１３２Ａから出射される周辺光束ｌｏを第２の光学部材１４０Ａの周辺レンズ部１４１Ａで整形するように構成したため、第１の光学部材１３０Ａの設計に制限があり、第１の整形レンズ部１３１Ａと第２の整形レンズ部１３２Ａとが共通の仮想光源位置を有するように第１の光学部材１３０Ａを設計できない場合でも、第１の光学部材１３０Ａから出射される光を超狭角配光から広角配光に変化させて光を照射することができる。 (Effect of the second embodiment)
According to the second embodiment, the following effects are obtained in addition to the effects of the first embodiment.
The center light beam l c emitted from the first shaping lens portion 131A of the first optical member 130A is shaped by the central lens portion 142A of the second optical member 140A, a second shaping lens of the first optical member 130A Since the peripheral light beam l o emitted from the portion 132A is shaped by the peripheral lens portion 141A of the second optical member 140A, the design of the first optical member 130A is limited, and the first shaping lens portion 131A is limited. Even if the first optical member 130A cannot be designed so that the second shaping lens portion 132A has a common virtual light source position, the light emitted from the first optical member 130A is changed from the ultra-small angle light distribution to the wide angle. Light can be irradiated by changing to a light distribution.

なお、本発明は、上記実施の形態及び上記実施例に限定されず、発明の要旨を変更しない範囲内で種々に変形可能である。   In addition, this invention is not limited to the said embodiment and said Example, A various deformation | transformation is possible within the range which does not change the summary of invention.

１ ＬＥＤ素子
１００、１００Ａ ＬＥＤ照明装置
１１０ ＬＥＤ光源
１１０ａ 光軸
１１１ 銅ブロック
１１７ 放熱器
１３０、１３０Ａ 光学部材
１３１、１３１Ａ 整形レンズ部
１３１ａ 入射面
１３１ｂ 出射面
１３２、１３２Ａ 整形レンズ部
１３２ａ 基準面
１３２ｂ 入射面
１３２ｃ 反射面
１３２ｄ 出射面
１４０、１４０Ａ 光学部材
１４１Ａ 周辺レンズ部
１４２Ａ 中心レンズ部
ｌｃ 中心光束
ｌｏ 周辺光束
DESCRIPTION OF SYMBOLS 1 LED element 100, 100A LED illumination apparatus 110 LED light source 110a Optical axis 111 Copper block 117 Radiator 130, 130A Optical member 131, 131A Shaping lens part 131a Incidence surface 131b Outgoing surface 132, 132A Shaping lens part 132a Reference surface 132b Incidence surface 132c Reflective surface 132d Emission surface 140, 140A Optical member 141A Peripheral lens part 142A Central lens part l c Center light beam l o Peripheral light beam

Claims (5)

半導体発光素子と、
前記半導体発光素子から出射される中心光束を集光して光軸方向に狭角光を出射する第１整形部と、前記半導体発光素子から前記中心光束の周辺に出射される周辺光束を集光して前記光軸方向に狭角光を出射する第２整形部とを有する第１の光学部材と、
前記第１の光学部材との前記光軸方向の距離を可変に設けられ、予め定めた距離において前記第１の光学部材から出射される光を集光して平行光にする第２の光学部材とを備える照明装置。 A semiconductor light emitting device;
A first shaping unit that collects a central light beam emitted from the semiconductor light emitting element and emits narrow-angle light in an optical axis direction, and a peripheral light beam emitted from the semiconductor light emitting element to the periphery of the central light beam A first optical member having a second shaping portion that emits narrow-angle light in the optical axis direction;
A second optical member that is variably provided with a distance in the optical axis direction from the first optical member, and condenses light emitted from the first optical member at a predetermined distance to make parallel light. A lighting device comprising: 前記第１整形部及び前記第２整形部は、共通の仮想光源位置を有する請求項１に記載の照明装置。   The lighting device according to claim 1, wherein the first shaping unit and the second shaping unit have a common virtual light source position. 前記第１整形部及び前記第２整形部は、それぞれ異なる仮想光源位置を有し、
前記第２の光学部材は、前記予め定めた距離において、前記第１整形部から出射される光を平行光とする中央レンズ部と、前記第２整形部から出射される光を平行光とする周辺レンズ部とを有する請求項１に記載の照明装置。 The first shaping unit and the second shaping unit have different virtual light source positions,
The second optical member has a central lens portion that makes light emitted from the first shaping portion parallel light at the predetermined distance, and makes light emitted from the second shaping portion parallel light. The lighting device according to claim 1, further comprising a peripheral lens unit. 前記第１の光学部材の第２整形部は、前記半導体発光素子から出射される前記周辺光束を全反射する全反射面を有する請求項１−３のいずれか１項に記載の照明装置。   The lighting device according to claim 1, wherein the second shaping unit of the first optical member has a total reflection surface that totally reflects the peripheral light flux emitted from the semiconductor light emitting element. 半導体発光素子から出射される中心光束を集光して光軸方向に狭角光を出射する第１整形部と、前記半導体発光素子から前記中心光束の周辺に出射される周辺光束を集光して前記光軸方向に狭角光を出射する第２整形部とを有する第１の光学部材と、
前記第１の光学部材との前記光軸方向の距離を可変に設けられ、予め定めた距離において前記第１の光学部材から出射される光を集光して平行光にする第２の光学部材とを備える光学部材。

A first shaping unit that collects a central light beam emitted from the semiconductor light emitting element and emits narrow-angle light in an optical axis direction; and a peripheral light beam emitted from the semiconductor light emitting element to the periphery of the central light beam. A first optical member having a second shaping unit that emits narrow-angle light in the optical axis direction,
A second optical member that is variably provided with a distance in the optical axis direction from the first optical member, and condenses light emitted from the first optical member at a predetermined distance to make parallel light. An optical member comprising:

JP2015099167A 2015-05-14 2015-05-14 Illumination device and optical member Pending JP2016219113A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015099167A JP2016219113A (en) 2015-05-14 2015-05-14 Illumination device and optical member
PCT/JP2016/063663 WO2016181905A1 (en) 2015-05-14 2016-05-06 Illumination device and optical member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015099167A JP2016219113A (en) 2015-05-14 2015-05-14 Illumination device and optical member

Publications (1)

Publication Number Publication Date
JP2016219113A true JP2016219113A (en) 2016-12-22

Family

ID=57248003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015099167A Pending JP2016219113A (en) 2015-05-14 2015-05-14 Illumination device and optical member

Country Status (2)

Country Link
JP (1) JP2016219113A (en)
WO (1) WO2016181905A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020077602A (en) * 2018-11-09 2020-05-21 パナソニックＩｐマネジメント株式会社 Lighting device
WO2022239308A1 (en) * 2021-05-12 2022-11-17 ミネベアミツミ株式会社 Illumination device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100756174B1 (en) * 2007-02-20 2007-09-05 주식회사 세코닉스 Focusing lens for led
JP2014175126A (en) * 2013-03-07 2014-09-22 Toshiba Lighting & Technology Corp Spotlight

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020077602A (en) * 2018-11-09 2020-05-21 パナソニックＩｐマネジメント株式会社 Lighting device
JP7236695B2 (en) 2018-11-09 2023-03-10 パナソニックＩｐマネジメント株式会社 lighting equipment
WO2022239308A1 (en) * 2021-05-12 2022-11-17 ミネベアミツミ株式会社 Illumination device
JP2022174785A (en) * 2021-05-12 2022-11-25 ミネベアミツミ株式会社 Lighting device
JP7235801B2 (en) 2021-05-12 2023-03-08 ミネベアミツミ株式会社 lighting equipment

Also Published As

Publication number Publication date
WO2016181905A1 (en) 2016-11-17

Similar Documents

Publication Publication Date Title
US9046241B2 (en) High efficiency directional light source using lens optics
US9964272B2 (en) Vehicle lamp with complex lightguide
JP5945857B2 (en) Vehicle headlamp and light guide lens
US10309601B2 (en) Light source device, lighting apparatus, and vehicle lamp device
US20170343179A1 (en) Lighting apparatus
JP2013519185A (en) Luminaire with phosphor, excitation light source, optical system, and heat sink
CN107859968B (en) Car light lighting system, car light assembly and car
CN106051572B (en) Vehicle lamp
US10267473B2 (en) Lighting device for vehicle having a reflective fluorescent body and prism
JP6407407B2 (en) Light source device and illumination device
JP2015225849A (en) Light flux control member, light emitting device, and lighting device
KR20170079355A (en) Light emitting apparatus, optical module including the apparatus, and vehicle including the module
CN107408613B (en) Optoelectronic component
US10151439B2 (en) Dual beam headlamp
CN106895335B (en) Light emitting module made of transparent material
JP2010262187A (en) Lens member and optical unit
WO2016175214A1 (en) Lighting device and optical member
WO2016181905A1 (en) Illumination device and optical member
CN111373195A (en) Lighting device for a motor vehicle
US10883691B2 (en) Illumination structure and light distributing method for the illumination structure
EP3356875B1 (en) Led module with output lens
TW201000822A (en) Optical adder
KR101756413B1 (en) Lighting device module
JP2014186990A (en) Search light type illuminating device by reflection mirror light source of light emitting diode
EP2835577A1 (en) Lighting apparatus with zooming function