JPH02298828A - Insolation sensor - Google Patents
Insolation sensorInfo
- Publication number
- JPH02298828A JPH02298828A JP1120734A JP12073489A JPH02298828A JP H02298828 A JPH02298828 A JP H02298828A JP 1120734 A JP1120734 A JP 1120734A JP 12073489 A JP12073489 A JP 12073489A JP H02298828 A JPH02298828 A JP H02298828A
- Authority
- JP
- Japan
- Prior art keywords
- light
- solar radiation
- casing
- colored
- radiation sensor
- 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
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 18
- 230000005855 radiation Effects 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、車両等に取付けるもので、日射の強さを検知
する日射センサに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solar radiation sensor that is attached to a vehicle or the like and detects the intensity of solar radiation.
日射センサに要求される特性は、センサ上に照射される
太陽光の入射角に対して得られる光電流値が一定である
こと、すなわち無指向な感度分布特性を持つことである
。しかし、日射センサの受光部を構成する一般の光電変
換用半導体では、入射光束が受光面に対して垂直方向か
ら入射するとき、すなわち入射角が小さいときに得られ
る光電流値が最大となり、入射角が大きくなるにつれて
入射角余弦の法則により光電流値が小さくなる。A solar radiation sensor is required to have a constant photocurrent value with respect to the incident angle of sunlight irradiated onto the sensor, that is, to have non-directional sensitivity distribution characteristics. However, in general photoelectric conversion semiconductors that make up the light-receiving part of solar radiation sensors, the photocurrent value obtained is maximum when the incident light flux is incident perpendicularly to the light-receiving surface, that is, when the angle of incidence is small; As the angle increases, the photocurrent value decreases due to the law of incident angle cosine.
この欠点を解消するために、第５図に示すような日射セ
ンサａが考案されている。この日射センサａは、透明ケ
ースｂにセンサ本体Ｃを収容したものであり、センサ本
体Ｃは、リードフレームのインナーリードｄと、インナ
ーリードｄにグイボンディングされた光電変換用の半導
体素子ｅとを、光透過性の樹脂ｆで一体にモールドして
形成されている。そして、半導体素子ｅの前方に位置さ
せて、モールド樹脂ｆの外面に遮光板ｇを接着し、入射
角の小さい領域における入射光束を少なくして、相対的
に入射角の大きい領域の入射光束を大きくし、感度分布
特性の改善を図るようにしている。In order to eliminate this drawback, a solar radiation sensor a as shown in FIG. 5 has been devised. This solar radiation sensor a has a sensor main body C housed in a transparent case b, and the sensor main body C includes an inner lead d of a lead frame and a semiconductor element e for photoelectric conversion that is bonded to the inner lead d. , are integrally molded with a light-transmitting resin f. Then, a light shielding plate g is placed in front of the semiconductor element e and adhered to the outer surface of the molded resin f to reduce the incident light flux in the area where the incident angle is small and to reduce the incident light flux in the area where the incident angle is relatively large. This is done in an attempt to improve the sensitivity distribution characteristics.
しかし、上記従来のものは、感度分布特性の改善が図ら
れているとはいえ、単に半導体素子ｅの前方に遮光板ｇ
を設けただけであり、無指向といえるような感度分布特
性が得られるものではなかった（第４図の破線Ｂを参照
）。However, although the above-mentioned conventional device has been designed to improve the sensitivity distribution characteristics, the light shielding plate g is simply placed in front of the semiconductor element e.
However, it was not possible to obtain a sensitivity distribution characteristic that could be called omnidirectional (see broken line B in FIG. 4).
本発明は、日射センサのケーシングに光拡散部材と着色
部材を用いて感度分布特性の改善を可能にすると共に、
ケーシングの色彩変更を可能にする日射センサを提供す
ることをその目的とする。The present invention uses a light diffusing member and a colored member in the casing of a solar radiation sensor to improve sensitivity distribution characteristics, and
The object is to provide a solar radiation sensor that allows the color of the casing to be changed.
本発明は上記目的を達成すべく、屋外に露出させて日射
の強さを検知する日射センサにおいて、光電変換用の半
導体素子を収容するケーシングの受光部分を、光を拡散
させる光拡散部材と、当該光拡散部材の外側を覆い、近
赤外光を透過しかつ可視光線領域で着色可能な着色部材
とで構成したことを特徴とする。In order to achieve the above object, the present invention provides a solar radiation sensor that is exposed outdoors to detect the intensity of solar radiation, in which a light-receiving portion of a casing that accommodates a semiconductor element for photoelectric conversion is equipped with a light-diffusing member that diffuses light; It is characterized by comprising a colored member that covers the outside of the light diffusing member, transmits near-infrared light, and can be colored in the visible light region.
この場合、光拡散部材と着色部材とが均一な厚さで略半
球状のドーム形に形成され、両部材の曲率中心を半導体
素子の受光面中心に略一致させることが好ましい。In this case, it is preferable that the light diffusing member and the colored member are formed in a substantially hemispherical dome shape with uniform thickness, and that the centers of curvature of both members substantially coincide with the center of the light-receiving surface of the semiconductor element.
ケーシングの受光部分を光拡散部材と着色部材とで構成
することにより、この光拡散部材で、入射する光を半導
体素子の前方で拡散させてから半導体素子に到達させる
２次光源的な作用を起こさせることができる。また、こ
の光拡散部材の外側を覆う着色部材で、半導体素子への
近赤外光を遮ることなく、太陽光を拡散して乳白色を呈
してしまう光拡散部材を覆い隠し、ケーシングの外側を
任意の色に着色することができる。By configuring the light-receiving part of the casing with a light-diffusing member and a colored member, this light-diffusing member causes a secondary light source-like effect in which the incident light is diffused in front of the semiconductor element and then reaches the semiconductor element. can be done. In addition, the colored material that covers the outside of the light diffusing member covers the light diffusing material that diffuses sunlight and appears milky white without blocking near-infrared light to the semiconductor element, and allows the outside of the casing to be freely colored. can be colored.
一方、この光拡散部材と着色部材とが略半球状に形成さ
れると共に、その曲率中心と半導体素子の受光面中心と
を略一致させることにより、受光面を光拡散部材の各部
からほぼ等距離に位置させることができ、日射の入射角
に拘らず半導体素子の受光面に密度の均一な光を到達さ
せることができる。On the other hand, by forming the light diffusing member and the colored member into a substantially hemispherical shape, and by making the center of curvature of the light diffusing member approximately coincide with the center of the light receiving surface of the semiconductor element, the light receiving surface is placed approximately equidistant from each part of the light diffusing member. This allows light of uniform density to reach the light-receiving surface of the semiconductor element regardless of the angle of incidence of solar radiation.
第１図を参照して、本発明を適用した一実施例の日射セ
ンサについて説明する。With reference to FIG. 1, a solar radiation sensor according to an embodiment of the present invention will be described.
日射センサ１は、センサ本体２とこれを収容するケーシ
ング３とで構成されている。センサ本体２は、リードフ
レーム４と、この上にダイボンディングされた光電変換
用の半導体素子５と、これらをリードフレーム４のアウ
ターリード部分４ａを残して一体にモールドしたモール
ド樹脂６とで構成されている。モールド樹脂６は、好ま
しくは可視光を吸収し、近赤外光のみを透過する樹脂で
構成する。The solar radiation sensor 1 includes a sensor body 2 and a casing 3 that houses the sensor body 2. The sensor body 2 is composed of a lead frame 4, a semiconductor element 5 for photoelectric conversion die-bonded onto the lead frame 4, and a mold resin 6 in which these are integrally molded, leaving the outer lead portion 4a of the lead frame 4. ing. The mold resin 6 is preferably made of a resin that absorbs visible light and transmits only near-infrared light.
一方、ケーシング３は、受光部分である半球状の受光部
ケーシング７とセンサ本体２が載置固定される円板状の
基部ケーシング８とから構成されている。受光部ケーシ
ング７は、内側の光拡散部材９とこれを覆う外側の着色
部材１０との２層で構成されており、それぞれ均一な厚
さで半球状のドーム形に形成され、かつ、両部材９，１
０の曲率中心を半導体素子５の受光面５ａの中心と略一
致させている。このようにして、受光部ケーシング７の
各部と受光面５ａとの間の距離をほぼ同一になるように
し、受光面５ａの中心に対し面方向左右の感度分布特性
の偏りを極力少なくすようにしている。On the other hand, the casing 3 includes a hemispherical light-receiving portion casing 7 that is a light-receiving portion, and a disk-shaped base casing 8 on which the sensor body 2 is placed and fixed. The light receiving unit casing 7 is composed of two layers: an inner light diffusing member 9 and an outer colored member 10 covering it, each of which is formed in a hemispherical dome shape with a uniform thickness, and both members have a uniform thickness. 9,1
The center of curvature of 0 substantially coincides with the center of the light receiving surface 5a of the semiconductor element 5. In this way, the distances between each part of the light-receiving part casing 7 and the light-receiving surface 5a are made almost the same, and the bias in the sensitivity distribution characteristics on the left and right sides of the surface direction with respect to the center of the light-receiving surface 5a is minimized. ing.
光拡散部材９は、含有されている微粒子等により、光の
乱反射、屈折或いは散乱を利用して光を拡散させるもの
で、これにより光拡散部材９自体に拡散光を発する２次
光源的な作用を行わせて、無指向な感度分布特性を得る
。The light diffusing member 9 diffuses light by using diffused reflection, refraction, or scattering of the light due to the fine particles contained therein. This causes the light diffusing member 9 itself to act like a secondary light source by emitting diffused light. is performed to obtain omnidirectional sensitivity distribution characteristics.
着色部材１０は近赤外光を透過し、かつ可視光線領域で
着色可能な材料、例えば、顔料を混入したプラスチック
等で構成される。これは、太陽光を拡散して乳白色を呈
してしまう・光拡散部材９を覆い隠すと共に、受光部ケ
ーシング７を任意の色に着色できるようにするものであ
る。The coloring member 10 is made of a material that transmits near-infrared light and can be colored in the visible light range, such as plastic mixed with a pigment. This covers the light diffusing member 9, which diffuses sunlight and appears milky white, and also allows the light receiving part casing 7 to be colored in any color.
これは、日射センサ１を第２図に示すような乗用自動車
Ｃに装着した場合に、乗用自動車Ｃの内装色に日射セン
サ１の色彩を調和させようとするものである。日射セン
サ１は、日射を適切に受光できるように乗用自動車Ｃの
ダツシュボードの両側やリヤガラスの内側に、受光部ケ
ーシング７を露出させて取付けられる。すなわち、最も
目立つ部分に取付けられる。したがって、受光部ケーシ
ング７の表面に光拡散部材９をむき出しの状態にすると
日射センサ１が光拡散部材９の地色の乳白色となり乗用
自動車Ｃの内装色にそぐわなくなってしまう。そこで、
近赤外光を透過する着色部材１０により光拡散部材９を
覆うことにより、日射センサ１の性能に影響を与えるこ
となく、乗用自動車Ｃの内装色に受光部ケーシング７の
色、すなわち日射センサの色を調和させるようにしてい
る。This is intended to harmonize the color of the solar radiation sensor 1 with the interior color of the passenger car C when the solar radiation sensor 1 is installed in a passenger car C as shown in FIG. The solar radiation sensor 1 is mounted on both sides of the dash board or inside the rear glass of a passenger car C with the light receiving part casing 7 exposed so as to appropriately receive solar radiation. That is, it is attached to the most conspicuous part. Therefore, if the light diffusing member 9 is exposed on the surface of the light receiving part casing 7, the sunlight sensor 1 will have a milky white background color which does not match the interior color of the passenger car C. Therefore,
By covering the light diffusion member 9 with the colored member 10 that transmits near-infrared light, the interior color of the passenger car C can be matched with the color of the light receiving part casing 7, that is, the color of the solar radiation sensor, without affecting the performance of the solar radiation sensor 1. I try to match the colors.
以上のように構成した日射センサ１の感度分布特性を第
３図に示す実験装置１１を用いて実験した。日射センサ
１は、外形寸法が直径２０ｍｍで長さ１７ｍｍのものを
用いた。日射センサ１と日射センサ１の回転軸１２との
間の距離Ｌ１を１８ｍｍとし、日射センサ１とランプ１
３との間の距離Ｌ２を４４０ｍｍとして実験した。The sensitivity distribution characteristics of the solar radiation sensor 1 constructed as described above were tested using the experimental apparatus 11 shown in FIG. 3. The solar radiation sensor 1 used had external dimensions of 20 mm in diameter and 17 mm in length. The distance L1 between the solar radiation sensor 1 and the rotation axis 12 of the solar radiation sensor 1 is 18 mm, and the solar radiation sensor 1 and the lamp 1
The experiment was carried out with the distance L2 between the two ends being 440 mm.
この実験結果を第４図に示す感度分布特性線図に現した
。これによれば、従来の日射センサ１の感度分布特性を
現した破線Ｂに対して、本実施例の日射センサ１の感度
分布特性は実線Ａで現され、より無指向に近い感度分布
特性が得られることが分かる。The experimental results are expressed in the sensitivity distribution characteristic diagram shown in FIG. According to this, the sensitivity distribution characteristic of the solar radiation sensor 1 of this embodiment is represented by a solid line A, in contrast to the broken line B representing the sensitivity distribution characteristic of the conventional solar radiation sensor 1, and the sensitivity distribution characteristic is closer to omnidirectional. You can see what you can get.
以上のように請求項１の発明によれば、光拡散部材に２
次光源的な作用を行わせることにより、広い入射角の領
域に亘る無指向な感度分布特性を得ることができ、また
、着色部材で光拡散部材を覆うことにより、日射センサ
のケーシングを任意の色彩に着色することができる。As described above, according to the invention of claim 1, the light diffusing member has two
By acting like a secondary light source, it is possible to obtain omnidirectional sensitivity distribution characteristics over a wide incident angle region, and by covering the light diffusion member with a colored material, the casing of the solar radiation sensor can be adjusted to any desired shape. Can be colored.
請求項２の発明によれば、日射の入射角に拘らず半導体
素子の受光面に密度の均一な光を到達させることかでき
、感度分布特性の偏りを防止できる効果を有する。According to the second aspect of the invention, it is possible to cause light of uniform density to reach the light-receiving surface of the semiconductor element regardless of the incident angle of solar radiation, and there is an effect that bias in sensitivity distribution characteristics can be prevented.
第１図は本発明を実施した日射センサの裁断側面図、第
２図は日射センサを取付けた車両の斜視図、第３図は日
射センサの実験装置の略図、第４図は日射センサの感度
分布特性線図、第５図は従来の日射センサの裁断側面図
である。
１・・・日射センサ、２・・・センサ本体、３・・・ケ
ーシング、４・・・リードフレーム、５・・・半導体素
子、５ａ・・・受光面、７・・・受光部ケーシング、９
・・・光拡散部材、１０・・・着色部材。
代理人弁理士 長谷用 芳 樹木発明の日射セ
ンサの構成
第】図
日射センサを取付けた車両
感度分布特性の実験装置Figure 1 is a cutaway side view of a solar radiation sensor according to the present invention, Figure 2 is a perspective view of a vehicle equipped with a solar radiation sensor, Figure 3 is a schematic diagram of the solar radiation sensor experimental equipment, and Figure 4 is the sensitivity of the solar radiation sensor. The distribution characteristic diagram, FIG. 5, is a cutaway side view of a conventional solar radiation sensor. DESCRIPTION OF SYMBOLS 1... Solar radiation sensor, 2... Sensor main body, 3... Casing, 4... Lead frame, 5... Semiconductor element, 5a... Light receiving surface, 7... Light receiving part casing, 9
...Light diffusing member, 10... Coloring member. Representative Patent Attorney Yoshi Hase Structure of Solar Radiation Sensor Invented by Trees Figure 1: Experimental device for vehicle sensitivity distribution characteristics equipped with solar radiation sensor
Claims (1)
サであって、光電変換用の半導体素子を収容するケーシ
ングの受光部分を、光を拡散させる光拡散部材と、当該
光拡散部材の外側を覆い、近赤外光を透過しかつ可視光
線領域で着色可能な着色部材とで構成したことを特徴と
する日射センサ。 ２、前記光拡散部材と前記着色部材とが均一な厚さで
略半球状のドーム形に形成され、当該両部材の曲率中心
を前記半導体素子の受光面中心に略一致させたことを特
徴とする請求項１に記載の日射センサ。[Scope of Claims] 1. A solar radiation sensor that is exposed outdoors to detect the intensity of solar radiation, which comprises a light-receiving portion of a casing that houses a semiconductor element for photoelectric conversion, and a light-diffusing member that diffuses light; A solar radiation sensor comprising a colored member that covers the outside of the light diffusion member and that transmits near-infrared light and can be colored in the visible light range. 2. The light diffusing member and the colored member are formed in a substantially hemispherical dome shape with uniform thickness, and the centers of curvature of both members are made to substantially coincide with the center of the light receiving surface of the semiconductor element. The solar radiation sensor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120734A JPH02298828A (en) | 1989-05-15 | 1989-05-15 | Insolation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1120734A JPH02298828A (en) | 1989-05-15 | 1989-05-15 | Insolation sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02298828A true JPH02298828A (en) | 1990-12-11 |
Family
ID=14793665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1120734A Pending JPH02298828A (en) | 1989-05-15 | 1989-05-15 | Insolation sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02298828A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109084U (en) * | 1990-02-21 | 1991-11-08 | ||
| JPH07280643A (en) * | 1993-11-12 | 1995-10-27 | Heraeus Ind Gmbh | Ultraviolet sensor |
| EP0724165A1 (en) * | 1995-01-25 | 1996-07-31 | Control Devices, Inc. | Photosensor to detect the direction of incidence and intensity of optical radiation |
| US7157678B2 (en) | 2003-06-24 | 2007-01-02 | Accel Ab | Optical radiation intensity sensor |
| JP2007503588A (en) * | 2003-05-22 | 2007-02-22 | プレー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Solar sensor with microspheres on the inner surface of the cover cap |
| JP2010501066A (en) * | 2006-08-17 | 2010-01-14 | エプコス アクチエンゲゼルシャフト | Solar sensor |
| US9939319B2 (en) | 2016-07-05 | 2018-04-10 | Arable Labs, Inc. | Radiation measuring systems and methods thereof |
| US10585210B2 (en) | 2015-10-06 | 2020-03-10 | Arable Labs, Inc. | Apparatus for radiometric correction and orthorectification of aerial imagery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013432B2 (en) * | 1980-07-25 | 1985-04-06 | 日本電信電話株式会社 | Method for forming Al or Al alloy pattern |
-
1989
- 1989-05-15 JP JP1120734A patent/JPH02298828A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013432B2 (en) * | 1980-07-25 | 1985-04-06 | 日本電信電話株式会社 | Method for forming Al or Al alloy pattern |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109084U (en) * | 1990-02-21 | 1991-11-08 | ||
| JPH07280643A (en) * | 1993-11-12 | 1995-10-27 | Heraeus Ind Gmbh | Ultraviolet sensor |
| EP0724165A1 (en) * | 1995-01-25 | 1996-07-31 | Control Devices, Inc. | Photosensor to detect the direction of incidence and intensity of optical radiation |
| JP2007503588A (en) * | 2003-05-22 | 2007-02-22 | プレー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Solar sensor with microspheres on the inner surface of the cover cap |
| US7157678B2 (en) | 2003-06-24 | 2007-01-02 | Accel Ab | Optical radiation intensity sensor |
| US7378628B2 (en) | 2003-06-24 | 2008-05-27 | Accel Ab | Photo radiation intensity sensor and method thereof |
| JP2010501066A (en) * | 2006-08-17 | 2010-01-14 | エプコス アクチエンゲゼルシャフト | Solar sensor |
| US10585210B2 (en) | 2015-10-06 | 2020-03-10 | Arable Labs, Inc. | Apparatus for radiometric correction and orthorectification of aerial imagery |
| US9939319B2 (en) | 2016-07-05 | 2018-04-10 | Arable Labs, Inc. | Radiation measuring systems and methods thereof |
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