JPH01262425A - Ultraviolet sensor for sunlight - Google Patents
Ultraviolet sensor for sunlightInfo
- Publication number
- JPH01262425A JPH01262425A JP9116288A JP9116288A JPH01262425A JP H01262425 A JPH01262425 A JP H01262425A JP 9116288 A JP9116288 A JP 9116288A JP 9116288 A JP9116288 A JP 9116288A JP H01262425 A JPH01262425 A JP H01262425A
- Authority
- JP
- Japan
- Prior art keywords
- ultraviolet
- wave
- light
- sunlight
- long
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 37
- 208000032370 Secondary transmission Diseases 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 8
- 230000009931 harmful effect Effects 0.000 abstract description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 4
- 230000037380 skin damage Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000695 excitation spectrum Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036555 skin type Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 206010015150 Erythema Diseases 0.000 description 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 208000012641 Pigmentation disease Diseases 0.000 description 2
- 206010042496 Sunburn Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000005437 stratosphere Substances 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- DASQIKOOFDJYKA-UHFFFAOYSA-N CCIF Chemical compound CCIF DASQIKOOFDJYKA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010010741 Conjunctivitis Diseases 0.000 description 1
- 206010014970 Ephelides Diseases 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- -1 Freon-13 (CCIF: l) Chemical compound 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 208000003351 Melanosis Diseases 0.000 description 1
- 241001420836 Ophthalmitis Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 231100000321 erythema Toxicity 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 206010023332 keratitis Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000037311 normal skin Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 208000010403 panophthalmitis Diseases 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Description
この発明は、例えば日光浴などの際に太陽光に含まれた
有害紫外線量を検出する太陽光の紫外線センサに関する
ものである。The present invention relates to a sunlight ultraviolet sensor that detects the amount of harmful ultraviolet rays contained in sunlight during, for example, sunbathing.
地表に到達する太陽光のうち、波長２９０ ｎｍ以下の
紫外光は、地表から高度２５ｋｍ＠後の成層圏内のオゾ
ンに吸収されるため、地表に降り注ぐ太陽光は波長２９
０ ｎｍ以上の光である。
ところが、最近、調髪用や殺虫剤のスプレー類、冷蔵庫
等の冷媒、半導体加工の洗浄剤などに多用されているフ
ロンガス（弗素、塩素を含む有機化合物、例えばフロン
１３（ＣＣＩＦ：ｌ）、フロン１４（ＣＦ、）、フロン
２３ （ＣＨＦ３）等）が成層圏に蓄積してオゾン層を
破壊し、地上に降り注ぐ波長の短い紫外線量を増加させ
る恐れがあることが指摘されている。
太陽光中の紫外線が人体に与える悪影響としては、ＵＶ
−Ａ （波長３１５〜４００ｎｍ）による皮膚の色素沈
着やＵＶ−Ｂ （波長２８０〜３１５ｎｍ）による皮膚
の紅斑、眼炎（結膜炎、角膜炎）等が既に知られており
、上記紫外ｖＡ量の増加は大きな問題となりつつある。
このような問題に対処する防衛策の一つとして、太陽光
を浴びる際に各自が自己の受ける紫外線量を把握する方
法が考えられる。
そして、この方法による場合、現状では紫外線量を把握
するにあたり本格的な計測用の紫外線測定装置を使用せ
ざるを得ない。Of the sunlight that reaches the earth's surface, ultraviolet light with a wavelength of 290 nm or less is absorbed by ozone in the stratosphere at an altitude of 25 km from the earth's surface, so the sunlight that falls on the earth's surface has a wavelength of 290 nm or less.
It is light of 0 nm or more. However, recently, Freon gas (organic compounds containing fluorine and chlorine, such as Freon-13 (CCIF: l), Freon-14 It has been pointed out that fluorocarbons (CF, ), Freon-23 (CHF3), etc.) accumulate in the stratosphere, destroy the ozone layer, and increase the amount of short-wavelength ultraviolet rays that fall on the ground. The harmful effects of ultraviolet rays in sunlight on the human body include
Skin pigmentation caused by -A (wavelength 315-400 nm) and skin erythema and ophthalmitis (conjunctivitis, keratitis) caused by UV-B (wavelength 280-315 nm) are already known, and the increase in the amount of ultraviolet vA mentioned above is known. is becoming a big problem. One possible defensive measure to deal with this problem is to monitor the amount of UV rays each person receives when exposed to sunlight. If this method is used, at present, a full-scale ultraviolet measuring device must be used to determine the amount of ultraviolet rays.
しかし、従来の計測用の紫外線測定装置は、その取り扱
いが非常に面倒であり、日常生活の中での使用には適さ
ず、更に検出した紫外線量が人体に悪影響を与えるもの
であるか否かの判断を利用者自ら行わなければならない
という問題点があって汎用性に欠けるという問題点があ
った。
この発明は上記のような問題点を解消するためになされ
たもので、日光浴などの際における太陽光に含まれた有
害紫外線量を、利用者の肌質に応じて検出することが可
能な紫外線センサを得ることを目的とする。However, conventional ultraviolet measurement devices are very difficult to handle and are not suitable for use in daily life.Furthermore, it is unclear whether the detected amount of ultraviolet rays will have an adverse effect on the human body. There was a problem in that the user had to make his/her own judgment, resulting in a lack of versatility. This invention was made in order to solve the above-mentioned problems, and it is possible to detect the amount of harmful ultraviolet rays contained in sunlight during sunbathing according to the skin type of the user. The purpose is to obtain a sensor.
この発明に係る太陽光の紫外線センサは、太陽光により
起電力を生じる太陽電池の受光面側に、太陽光中におけ
る波長の長い紫外線を透過する長波用紫外ｖＡ透過フィ
ルタと、太陽光中の波長の短い紫外線を透過する短波用
紫外線透過フィルタとを設けたものである。
上記太陽電池の受光面側と長波用および短波用紫外線透
過フィルタとの間には、蛍光体を設けることが効果的で
ある。
また、上記太陽電池の受光面側に、長波用および短波用
紫外線透過フィルタの二次透過帯を透過してくる赤外光
をカットするだめの赤外線カットフィルタを設けたり、
上記太陽電池の受光面と上記蛍光体との間に、該蛍光体
を透過した紫外線と上記長波用および短波用紫外線透過
フィルタの副透過帯を透過してくる赤外光とをカットす
る紫外線・赤外線カット膜が設けたりすれば、更に効果
的である。The sunlight ultraviolet sensor according to the present invention includes a long-wavelength ultraviolet vA transmission filter that transmits long-wavelength ultraviolet rays in sunlight, and a long-wavelength ultraviolet vA transmission filter that transmits long-wavelength ultraviolet rays in sunlight, on the light-receiving surface side of a solar cell that generates an electromotive force due to sunlight. It is equipped with a shortwave ultraviolet transmission filter that transmits short ultraviolet rays. It is effective to provide a phosphor between the light-receiving surface side of the solar cell and the long-wave and short-wave ultraviolet transmission filters. Further, an infrared cut filter is provided on the light receiving surface side of the solar cell to cut infrared light that passes through the secondary transmission band of the long wave and short wave ultraviolet transmission filters,
Between the light-receiving surface of the solar cell and the phosphor, there is provided ultraviolet rays that cut off the ultraviolet rays that have passed through the phosphor and the infrared rays that have passed through the sub-transmission bands of the long-wave and short-wave ultraviolet transmission filters. It will be even more effective if an infrared cut film is provided.
この発明における紫外線センサは、日光浴などの際にお
ける太陽光中の波長の長い紫外線が長波用紫外線透過フ
ィルタを透過し、また、波長の短い紫外線が短波用紫外
線透過フィルタを透過することにより、これらの紫外線
透過フィルタによって波長の長い紫外線と波長の短い紫
外線を選択的に透過させることができ、かつ、それらの
透過紫外線量に対応した電圧または電流を上記太陽電池
の出力として取り出すことができる。このため、その出
力信号により、波長の長い紫外線量と波長の短い紫外線
量とを太陽電池でモニターすることができ、過剰日光浴
による皮膚の損傷防止に寄与する。
また、上記長波用および短波用紫外線透過フィルタを透
過して紫外線で蛍光体が発光することにより、その発光
を上記波長の長い紫外線量および波長の短い紫外線量に
対応した太陽電池の出力信号として取り出すことができ
る。
しかも、紫外線・赤外線カット膜により、上記蛍光体の
発光だけを太陽電池の出力信号として取り出すことがで
き、これによって、正確な紫外線エネルギー量を得るこ
とができる。
もって、上述のように、選択的に取り出された紫外線検
出信号により利用者の肌質に応じた過剰日焼けを未然に
防止し得る。The ultraviolet sensor according to the present invention allows long-wavelength ultraviolet rays in sunlight during sunbathing to pass through a long-wavelength ultraviolet transmission filter, and short-wavelength ultraviolet rays to pass through a short-wavelength ultraviolet transmission filter. The ultraviolet transmission filter can selectively transmit long-wavelength ultraviolet rays and short-wavelength ultraviolet rays, and a voltage or current corresponding to the amount of the transmitted ultraviolet rays can be extracted as the output of the solar cell. Therefore, the output signal allows the solar cell to monitor the amount of ultraviolet rays with long wavelengths and the amount of ultraviolet rays with short wavelengths, which contributes to preventing skin damage caused by excessive sunbathing. In addition, when the phosphor emits ultraviolet light that passes through the long-wavelength and short-wavelength ultraviolet transmission filters, the emitted light is extracted as an output signal of the solar cell corresponding to the amount of ultraviolet light with long wavelengths and the amount of ultraviolet light with short wavelengths. be able to. Furthermore, the ultraviolet/infrared ray blocking film allows only the light emitted from the phosphor to be extracted as an output signal from the solar cell, thereby making it possible to obtain an accurate amount of ultraviolet energy. Therefore, as described above, excessive sunburn depending on the skin type of the user can be prevented by the selectively extracted ultraviolet light detection signal.
以下、この発明の一実施例を図面に基づいて説明する。
第１図はこの発明の一実施例による紫外線センサのブロ
ック図、第２図はその紫外線センサ素子の斜視図、第３
図は第２図の正面図である。
図において、１は紫外線センサ素子としての太陽電池で
あり、この太陽電池ｌは、ガラス等の透明基板２と、こ
の透明基板２の裏面に一体積層された透明電極３と、こ
の透明電極３にアモルファスシリコン層（ａ ５ｉｐ
ｊｎ）４を介して積層された一対のアルミニウム電極（
以下、アルミ電極という）５，６とから成り、上記透明
電極３にはり−ドｖＡ３ａが、また上記アルミ電極５，
６にはリード線５ａ、６ａがそれぞれ接続されている。
かかる太陽電池１０分光感度は、第８図に示すように、
４００ｎｍ以下の紫外線′ｐ１域においても低いながら
感度を有している。
そこで、４００ ｎｍ以下の紫外８１領域において、波
長域の異なる紫外線を区分して別々に上記太陽電池１で
受光させるべく、該太陽電池１の透明基板２の表面（太
陽電池ｌの受光面側）には、上記４００ ｎｍ以下の紫
外線領域において波長の長いＡ′ａ域（波長３２０〜４
００ｎｍ）の紫外線を通過する長波用紫外線透過フィル
タ（以下、Ａ波用透過フィルタという）７と、波長の短
いＢ波域（波長２８０〜３２０ｎｍ）の紫外線を透過す
る短波用紫外線透過フィルタ（以下、Ｂ波用透過フィル
タという）８とが一体的に張設されている。
第１０図には上述のようなＡ波相透過フィルタ７および
Ｂ波相透過フィルタ８のフィルタ特性を示す。
従って、上記太陽電池１は、Ａ波相透過フィルタ７を透
過する太陽光中の波長の長い紫外線Ａ波と、Ｂ波相透過
フィルタ８を透過する太陽光中の波長の短い紫外線Ｂ波
とを個別的に受光し、それらの紫外線強度に対応した出
力としてモニタできる構成となっている。
第１図において、１０は上記紫外ｉＪＡ波およびＢ波の
それぞれに対応した太ｖ４電池１の出力信号を入力して
信号処理を行う信号処理回路で、上記太陽電池１の出力
信号を入力して増幅する増幅器１１と、この増幅器１１
からの出力信号をＡ／Ｄ変換するＡ／Ｄ変換器１２とか
らなっている。このＡ／Ｄ変換器１２は、次に述べるＡ
変換またはＢ変換の何れを行うものであってもよい。
Ａ変換；ｎビットのＡ／Ｄ変換器１２を使用し、一定時
間ごとにｎビットの瞬時値信号を出力する。
Ｂ変換；増幅器１１からの入力信号を積分し、−定のエ
ネルギー量に達した時点で１パルス出力する。
１３は上記Ａ／Ｄ変換器１２からの入力信号に基づく演
算を行って上記紫外線Ａ波およびＢ波にそれぞれ対応す
る紫外線エネルギー量を算出するマイクロプロセッサ（
演算回路）であり、このマイクロプロセンサ１３は、上
記Ａ変換またはＢ変換に対応した何れかの演算を行うも
ので、その演算式を次に述べる。
Ａ変換の場合は、各瞬時値Ｅ＋、ＥｚＥｔ ・・・Ｅ
、、を加算し、これに時間ｔを乗じて更に係数に１をか
ける下記（１）式。
Ｅ ” ｋ ＋ ・（ΣＥ ・・・・（１）この（１
）式によって紫外線エネルギーＩ Ｊ ／ ｃｍ”を求
める。
Ｂ変換の場合は、パルスのカウント値に１パルス相当分
のエネルギー量に２を乗じることで紫外線エネルギーｉ
Ｊ／ｃｍ”を求める下記（２）式。
Ｅ ＝ ｋｔ Ｎ （Ｎはパルス数）・・・（２）１４
は上記演算式（１）または（２）が記憶され、かつ演算
された上記紫外線エネルギーＩＪ／Ｃｍ２を随時記憶す
るメモリ、１５は閾値設定機構であり、この闇値設定機
構１５によって、第１２図に示すように、人体の皮膚が
肌色に応じて上記紫外ｙＡＡ波およびＢ波を許容し得る
闇値が設定される。
１６は警報手段としての表示部、１７は同じく警報手段
としてのアラームであり、これらの表示部１６およびア
ラーム１７は、上記マイクロプロセッサ１３による演算
結果の紫外線エネルギー量Ｊ／ｃｍ２が上記闇値に達し
た時点における上記マイクロプロセッサ１３の出力信号
を入力して作動する。１８は上記表示部１６のクリアス
イッチおよび上記アラーム１７のストップボタン等を有
して警報状態を解除する機能設定機構、１９はクロック
機構、２０は太陽光紫外線検出回路の電源である。
次に動作について説明する。
日光浴などの際に利用者は電源２０を投入し、かつ闇値
設定機構１５を操作して自らの皮眉質に対応した闇値を
設定する。
この状態において、太陽電池１が太陽光を受光するが、
この場合、太陽光中の紫外線Ａ波がＡ波相透過フィルタ
７を透過して透明電極３およびａ−３ｉｐｉｎ層４を介
して一方のアルミ電極５に達することにより、このアル
ミ電極５には上記紫外線Ａ波に対応した起電力が生起さ
れ、一方、Ｂ波相透過フィルタ８を透過した紫外＆’ｉ
Ｂ波が上記透明電極３およびａ−５ｉｐｉｎ層４を介し
て他方のアルミ電極６に達することにより、このアルミ
電極６には上記紫外′！ｊＡＢ波に対応した起電力が生
起される。そして、これらの起電力が信号処理回路１０
で信号処理されてマイクロプロセッサ１３に出力される
。マイクロプロセッサ１３は、上記信号処理回路１０か
らの入力信号により（１）式または（２）式による演算
を行って上記紫外線Ａ波およびＢ波に対応した紫外線エ
ネルギー量Ｊ／ｃｍ２を算出し、かつ、この紫外線エネ
ルギー量Ｊ／ｃｍ”を上記闇値設定機構１５で設定され
た闇値と比較演算する。その結果の算出値、即ち、上記
紫外線エネルギー量Ｊ／ｃｍ２が闇値に達すると、その
時点で上記マイクロプロセッサ１３が表示部１６および
アラーム１７に警報信号を出力し、これにより、上記表
示部１６およびアラーム１７が作動して警報を発する。
この警報によって日光浴をやめれば、皮膚の損傷（紅斑
、水庖、色素沈着によるシミ、ソバカス）を未然に防止
することができる。
第４図はこの発明の他の実施例による太陽電池の斜視図
であり、図において、２１は太陽電池１の透明基板２と
Ａ波相透過フィルタ７およびＢ波相透過フィルタ８との
間に介設された赤外線カットフィルタであり、この赤外
線カットフィルタ２１は上記Ａ波尾透過フィルタ７およ
びＢ波相透過フィルタ８に存在する副透過帯（２次透過
帯）を透過してくる赤外光をカットするフィルタ特性を
有し、このフィルタ特性によって、紫外線Ａ波およびＢ
波に対応した正確な起電力を生起させることができる。
第５図はこの発明の更に別の実施例による太陽電池を示
す斜視図、第６図はその側面図であり、図において、７
０は第１１図に示すフィルタ特性を有して太陽光中の紫
外線をその波長の長短に関係なく透過し得る紫外線透過
フィルタ、２２は透明基板２と上記紫外線透過フィルタ
７０の間で一体的に設けられたＡ波尾蛍光体、２３は上
記透明基板２と紫外線透過フィルタ７０との間で上記Ａ
波尾蛍光体２２と同一面状に一体的に設けられたＢ波用
蛍光体である。
ここで、上記太陽電池１と上記Ａ波尾蛍光体２２および
Ｂ波相蛍光体２３との相関関係について述べると、上記
太陽電池１の分光感度は第８図に示すように４００〜７
００ｎｍの可視光領域にある。
このため、上記Ａ波尾蛍光体２２およびＢ波相蛍光体２
３の発光域も４００〜７００ ｎｍの波長間にあるもの
が選定される。そして、上記λ波用蛍光体２２およびＢ
波相蛍光体２３は、それらの励起スペクトルが第９図に
示すようにＡ波およびＢ波に対応したものとなっている
。
かかるＡ波相蛍光体２２およびＢ波相蛍光体２３は、各
々の励起スペクトルに対応した紫外線だけで選択的に発
光する。即ち、Ａ波相蛍光体２２は、上記紫外線透過フ
ィルタ７０を透過した波長の長い紫外！ｖ！Ａ波だけに
よって発光し、Ｂ波相蛍光体２３は、同じく上記紫外線
透過フィルタ７０を透過した波長の短い紫外線Ｂ波だけ
によって発光する。従って、この発明では、必ずしも前
実施例の場合のようにＡ波用通過フィルタ７とＢ波層透
過フィルタ８とを区別して使用する必要はなく、この実
施例の上記紫外線透過フィルタ７０でもよい。
２４は上記Ａ波層蛍光体２２およびＢ波層蛍光体２３と
上記透明基Ｗ、 ２との間に一体的に設けられた紫外線
・赤外線カット膜である。この紫外線・赤外線カット膜
２４は第１２図に示す紫外線・赤外線カットフィルタ特
性を有し、上記紫外線透過フィルタ７０を介して上記Ａ
波層蛍光体２２およびＢ波層蛍光体２３を透過してくる
紫外線と、上記紫外Ｍｌ透過フィルタ７０の副透過帯を
透過してくる赤外光をカットすることにより、上記Ａ波
層蛍光体２２およびＢ波層蛍光体２３の各発光だけを出
力信号として取り出す。従って、それらの発光だけを上
記太陽電池１でモニターすることができ、第１図の紫外
線センサ回路により、第１４図に示す蛍光体の発光照度
と励起紫外線の関係から最終的に紫外線エネルギー量Ｊ
／ｃｍ”を得ることができる。
第７図はこの発明を商品化する場合の具体例を示す斜視
図であり、第７図（Ａ）は携帯用置物形式、第７図（Ｂ
）は腕時計式、第７図（Ｃ）は帽子にビンまたはフック
止め等で取付けられたバッチ式、第７図（Ｄ）は広告塔
形式としたそれぞれの紫外線センサ本体２５を示し、こ
の紫外線センサ本体２５内に第１図の紫外線センサ回路
が組込まれ、かつ、その紫外線センサ本体２５０表面に
第１図〜第６図における受光部（Ａ波用透過フィルタ７
およびＢ波層透過フィルタ８、あるいは紫外線透過フィ
ルタ７０）と闇値設定機構（設定用層子）１５および表
示部１６、アラーム１７、電源２０のスイッチをそれぞ
れ表出させた構成としている。
以上において、第７図（Ａ）〜（Ｃ）の紫外線センサ本
体２５は容易に携帯でき、使用に際しては使用者の皮膚
の強さに応じた闇値を設定嫡子１５により設定し、スタ
ートスイッチ２０を押して日光浴する傍らに置いておく
。もって、表示部１６およびアラーム１７の作動による
警報時点で日光浴をやめることにより、過剰日光浴によ
る皮膚の損傷を未然に防止できる。第７図（Ｄ）の場合
は、海辺やスポーツ会場などに設置され、表示部１６や
アラーム１７は人目につくようにし、使用に際しては１
日ごとにリセットし、現在の照度での日光浴可能時間や
成る時刻からの積算量などを表示部１６でメツセージな
どを順次表示させたり、アラーム１７による音声で知ら
せる。
なお、上記実施例において、太陽電池１はアルファスシ
リコン系のほか、単結晶シリコン、ガリウム砒素などの
太陽電池であってもよい。Hereinafter, one embodiment of the present invention will be described based on the drawings. FIG. 1 is a block diagram of an ultraviolet sensor according to an embodiment of the present invention, FIG. 2 is a perspective view of the ultraviolet sensor element, and FIG.
The figure is a front view of FIG. 2. In the figure, 1 is a solar cell as an ultraviolet sensor element, and this solar cell 1 includes a transparent substrate 2 made of glass or the like, a transparent electrode 3 laminated on the back surface of the transparent substrate 2, and Amorphous silicon layer (a 5ip
jn) A pair of aluminum electrodes (
5 and 6 (hereinafter referred to as aluminum electrodes), the transparent electrode 3 has a electrode vA3a, and the aluminum electrode 5,
6 are connected to lead wires 5a and 6a, respectively. The 10 spectral sensitivity of such a solar cell is as shown in FIG.
It has low sensitivity even in the ultraviolet 'p1 region of 400 nm or less. Therefore, in order to separate ultraviolet rays with different wavelength ranges in the ultraviolet 81 region of 400 nm or less and receive them separately in the solar cell 1, the surface of the transparent substrate 2 of the solar cell 1 (the light-receiving surface side of the solar cell 1) is In the above-mentioned ultraviolet region of 400 nm or less, the long wavelength A'a region (wavelength 320 to 4
A long-wave ultraviolet transmission filter (hereinafter referred to as A-wave transmission filter) 7 that passes ultraviolet rays in the wavelength range (00 nm), and a short-wave ultraviolet transmission filter (hereinafter referred to as (referred to as a B-wave transmission filter) 8 is integrally installed. FIG. 10 shows the filter characteristics of the A-wave phase transmission filter 7 and the B-wave phase transmission filter 8 as described above. Therefore, the solar cell 1 transmits the long-wavelength ultraviolet A waves in the sunlight that passes through the A-wave phase transmission filter 7 and the short-wavelength ultraviolet B waves in the sunlight that passes through the B-wave phase transmission filter 8. The structure is such that it can receive individual light and monitor the output corresponding to the intensity of the ultraviolet rays. In FIG. 1, numeral 10 denotes a signal processing circuit that inputs and processes the output signals of the large V4 battery 1 corresponding to the ultraviolet iJA waves and B waves, respectively. Amplifier 11 for amplification and this amplifier 11
It consists of an A/D converter 12 that A/D converts the output signal from the A/D converter 12. This A/D converter 12 is a
Either conversion or B conversion may be performed. A conversion: An n-bit A/D converter 12 is used to output an n-bit instantaneous value signal at regular intervals. B conversion: Integrates the input signal from the amplifier 11, and outputs one pulse when it reaches a certain amount of energy. 13 is a microprocessor (
This microprocessor sensor 13 performs any calculation corresponding to the above-mentioned A conversion or B conversion, and the calculation formula will be described below. In the case of A conversion, each instantaneous value E+, EzEt...E
, , is multiplied by time t, and then the coefficient is multiplied by 1 in equation (1) below. E ” k + ・(ΣE ・・・・(1) This (1
) to calculate the ultraviolet energy I J / cm. In the case of B conversion, the ultraviolet energy i
Equation (2) below to calculate "J/cm". E = kt N (N is the number of pulses)... (2) 14
15 is a threshold value setting mechanism, and 15 is a threshold value setting mechanism in which the above calculation formula (1) or (2) is stored and the calculated ultraviolet energy IJ/Cm2 is stored at any time. As shown in , a darkness value at which the human skin can tolerate the ultraviolet yAA waves and B waves is set depending on the skin color of the human body. Reference numeral 16 indicates a display unit as a warning means, and reference numeral 17 indicates an alarm unit, which also serves as a warning unit. It operates by inputting the output signal of the microprocessor 13 at the time when the microprocessor 13 is activated. 18 is a function setting mechanism that includes a clear switch for the display section 16 and a stop button for the alarm 17 to cancel the alarm state, 19 is a clock mechanism, and 20 is a power source for the solar ultraviolet ray detection circuit. Next, the operation will be explained. When sunbathing or the like, the user turns on the power source 20 and operates the darkness value setting mechanism 15 to set a darkness value corresponding to his/her skin and eyebrow texture. In this state, the solar cell 1 receives sunlight, but
In this case, ultraviolet A waves in sunlight pass through the A-wave phase transmission filter 7 and reach one of the aluminum electrodes 5 via the transparent electrode 3 and the a-3ipin layer 4. An electromotive force corresponding to the ultraviolet A wave is generated, while an electromotive force corresponding to the ultraviolet &'i
When the B wave reaches the other aluminum electrode 6 via the transparent electrode 3 and the a-5ipin layer 4, the aluminum electrode 6 receives the ultraviolet ′! An electromotive force corresponding to the jAB wave is generated. These electromotive forces are then applied to the signal processing circuit 10.
The signal is subjected to signal processing and output to the microprocessor 13. The microprocessor 13 calculates the amount of ultraviolet energy J/cm2 corresponding to the ultraviolet A and B waves by calculating the equation (1) or (2) based on the input signal from the signal processing circuit 10, and , this amount of ultraviolet energy J/cm" is compared with the darkness value set by the darkness value setting mechanism 15. When the calculated value of the result, that is, the amount of ultraviolet energy J/cm2 reaches the darkness value, At this point, the microprocessor 13 outputs an alarm signal to the display section 16 and alarm 17, which activates the display section 16 and alarm 17 to issue an alarm.If you stop sunbathing due to this alarm, skin damage ( erythema, water spots, pigmentation spots, and freckles) can be prevented. FIG. 4 is a perspective view of a solar cell according to another embodiment of the present invention. It is an infrared cut filter interposed between the transparent substrate 2 and the A wave phase transmission filter 7 and the B wave phase transmission filter 8, and this infrared cut filter 21 is interposed between the A wave tail transmission filter 7 and the B wave phase transmission filter. It has a filter characteristic that cuts infrared light that passes through the sub-transmission band (secondary transmission band) that exists in the
Accurate electromotive force corresponding to waves can be generated. FIG. 5 is a perspective view showing a solar cell according to still another embodiment of the present invention, and FIG. 6 is a side view thereof.
0 is an ultraviolet transmission filter having the filter characteristics shown in FIG. 11 and capable of transmitting ultraviolet rays in sunlight regardless of the length of the wavelength; 22 is an ultraviolet transmission filter integrally formed between the transparent substrate 2 and the ultraviolet transmission filter 70; The provided A wavetail phosphor 23 is interposed between the transparent substrate 2 and the ultraviolet transmission filter 70.
This is a B-wave phosphor that is integrally provided on the same plane as the wave tail phosphor 22. Here, to describe the correlation between the solar cell 1 and the A-wave tail phosphor 22 and the B-wave phase phosphor 23, the spectral sensitivity of the solar cell 1 is 400 to 7, as shown in FIG.
It is in the visible light region of 00 nm. Therefore, the A wave tail phosphor 22 and the B wave phase phosphor 2
The emission range of No. 3 is also selected to be within the wavelength range of 400 to 700 nm. Then, the λ wave phosphor 22 and B
The wave phase phosphor 23 has an excitation spectrum corresponding to A waves and B waves as shown in FIG. The A-wave phase phosphor 22 and the B-wave phase phosphor 23 selectively emit light only with ultraviolet rays corresponding to their respective excitation spectra. That is, the A-wave phase phosphor 22 emits ultraviolet light with a long wavelength that has passed through the ultraviolet transmission filter 70! v! The B-wave phase phosphor 23 emits light only by the A wave, and the B-wave phase phosphor 23 emits light only by the short-wavelength ultraviolet B wave that has passed through the ultraviolet transmission filter 70. Therefore, in this invention, it is not necessary to use the A-wave pass filter 7 and the B-wave layer pass filter 8 separately as in the previous embodiment, and the ultraviolet light transmit filter 70 of this embodiment may be used. Reference numeral 24 denotes an ultraviolet/infrared ray cutting film integrally provided between the A-wave layer phosphor 22 and the B-wave layer phosphor 23 and the transparent base W, 2. This ultraviolet/infrared ray cutting film 24 has the ultraviolet/infrared ray cutting filter characteristics shown in FIG.
By cutting the ultraviolet light that passes through the wave layer phosphor 22 and the B-wave layer phosphor 23 and the infrared light that passes through the sub-transmission band of the ultraviolet Ml transmission filter 70, the A-wave layer phosphor 22 and the B-wave layer phosphor 23 are extracted as output signals. Therefore, only the emitted light can be monitored by the solar cell 1, and the ultraviolet energy amount J can be determined from the relationship between the luminance of the phosphor and the excitation ultraviolet light shown in FIG.
/cm''. Fig. 7 is a perspective view showing a specific example of commercializing this invention. Fig. 7 (A) is a portable figurine form, Fig. 7 (B
) shows the ultraviolet sensor main body 25, which is a wristwatch type, Fig. 7(C) is a batch type attached to a hat with a bottle or hook, etc., and Fig. 7(D) is a billboard type. The ultraviolet sensor circuit shown in FIG. 1 is incorporated into the main body 25, and the light receiving section (A-wave transmission filter 7
and a B wave layer transmission filter 8 or an ultraviolet transmission filter 70), a dark value setting mechanism (setting layer) 15, a display section 16, an alarm 17, and a switch for a power source 20, respectively. In the above, the ultraviolet sensor main body 25 shown in FIGS. 7(A) to 7(C) can be easily carried, and when used, the darkness value corresponding to the strength of the user's skin is set by the eldest child 15, and the start switch 20 is set. Press and keep it near you while sunbathing. Therefore, by stopping sunbathing at the time when the display unit 16 and the alarm 17 are activated, skin damage caused by excessive sunbathing can be prevented. In the case of Fig. 7 (D), the display unit 16 and alarm 17 are installed at a beach or sports venue, etc., so that they are conspicuous, and when in use,
It is reset every day, and a message or the like is sequentially displayed on the display unit 16 or an alarm 17 is used to notify the user of the possible sunbathing time under the current illuminance, the cumulative amount of sunbathing from the current time, etc. In addition, in the above embodiment, the solar cell 1 may be a solar cell made of single crystal silicon, gallium arsenide, or the like in addition to the alpha silicon type solar cell.
以上のように、この発明によれば、長波用および短波用
紫外線透過フィルタにより、波長の長い紫外線と波長の
短い紫外線を選択的に透過させることができ、それらの
透過紫外線量に対応した電圧または電流を上記太陽電池
の出力として取り出すことができる。このため、その出
力信号により、波長の長い紫外線量と波長の短い紫外線
量とを太陽電池でモニターすることができ、過剰日光浴
による皮膚の損傷防止に寄与する。
また、上記長波用および短波用紫外線透過フィルタを透
過して紫外線で蛍光体が発光することにより、その発光
を上記波長の長い紫外線量および波長の短い紫外線量に
対応した太’４電池の出力信号として取り出すことがで
きる。
しかも、紫外線・赤外線カット膜により、上記蛍光体の
発光だけを太陽電池の出力信号として取り出すことがで
き、これによって、正値な紫外線エネルギー量を得るこ
とができる。
もって、上述のように、選択的に取り出された紫外線検
出信号により利用者の肌質に応じた過剰日焼けを未然に
防止し得る。As described above, according to the present invention, it is possible to selectively transmit long-wavelength ultraviolet rays and short-wavelength ultraviolet rays by the long-wavelength and short-wavelength ultraviolet ray transmission filters. Current can be taken out as the output of the solar cell. Therefore, the output signal allows the solar cell to monitor the amount of ultraviolet rays with long wavelengths and the amount of ultraviolet rays with short wavelengths, which contributes to preventing skin damage caused by excessive sunbathing. In addition, when the phosphor emits ultraviolet light through the long-wavelength and short-wavelength ultraviolet transmission filters, the emitted light is converted into an output signal of the thick battery corresponding to the amount of ultraviolet rays with long wavelengths and the amount of ultraviolet rays with short wavelengths. It can be extracted as Moreover, the ultraviolet/infrared ray blocking film allows only the light emitted from the phosphor to be extracted as an output signal from the solar cell, thereby making it possible to obtain a positive amount of ultraviolet energy. Therefore, as described above, excessive sunburn depending on the skin type of the user can be prevented by the selectively extracted ultraviolet light detection signal.
第１図はこの発明の一実施例による紫外線センサのブロ
ック図、第２図はその紫外線センサ素子となる太陽電池
の斜視図、第３図は第２図の正面図、第４図は他の実施
例による太陽電池の斜視図、第５図は更に別の実施例に
より太陽電池の斜視図、第６図は第５図の正面図、第７
図はこの発明を商品化する場合の具体例を示す斜視図、
第８図は太陽電池の分光感度を示す図、第９図は蛍光体
の励起・発光スペクトル図、第１０図は第２図〜第４図
におけるＡ波用およびＢ波用紫外線透過フィルタの特性
図、第１１図は第５図および第６図に於ける紫外線透過
フィルタの特性図、第１２図は紫外線・赤外線カット膜
の特性図、第１３図は肌色と闇値の相関関係を示す図、
第１４図は紫外線照度と発光体の発光照度との相関関係
を示す図である。
図において、１は太陽電池、７はＡ波用（長波用）透過
フィルタ、８はＢ波用（短波用）透過フィルタ、２１は
赤外線カットフィルタ、２２はＡ波用（長波用）蛍光体
、２３はＢ波用（短波用）蛍光体、２４は紫外線・赤外
線カット膜、７０は紫外線透過フィルタである。
特 許 出 願 人 山武ハネウェル株式会社（外２
名）
第７図 ＊７ｖＡ
（Ａ） （Ｂ）
第１０図
波長（ｎｍ）
１８図 第９図
第１１図 ｌ１１２図ｌＮ１３図
色白の肌 普】ｌの肌 色黒の肌
皮膚色
ｊｌｌｌｌｌ／Ｃｍ’１
手続補正書（方式）
％式％
１、事件の表示 特願昭６３−９１１６２号２、発
明の名称
太陽光の紫外線センサ
３、補正をする者FIG. 1 is a block diagram of an ultraviolet sensor according to an embodiment of the present invention, FIG. 2 is a perspective view of a solar cell serving as the ultraviolet sensor element, FIG. 3 is a front view of FIG. 2, and FIG. FIG. 5 is a perspective view of a solar cell according to another embodiment, FIG. 6 is a front view of FIG. 5, and FIG. 7 is a perspective view of a solar cell according to an embodiment.
The figure is a perspective view showing a specific example of commercializing this invention.
Figure 8 is a diagram showing the spectral sensitivity of a solar cell, Figure 9 is an excitation/emission spectrum diagram of a phosphor, and Figure 10 is the characteristics of the A-wave and B-wave ultraviolet transmission filters in Figures 2 to 4. Figure 11 is a characteristic diagram of the ultraviolet transmission filter in Figures 5 and 6, Figure 12 is a characteristic diagram of the ultraviolet/infrared cut film, and Figure 13 is a diagram showing the correlation between skin color and darkness value. ,
FIG. 14 is a diagram showing the correlation between the ultraviolet illuminance and the luminous illuminance of the light emitter. In the figure, 1 is a solar cell, 7 is a transmission filter for A waves (for long waves), 8 is a transmission filter for B waves (for short waves), 21 is an infrared cut filter, 22 is a phosphor for A waves (for long waves), 23 is a B-wave (short wave) phosphor, 24 is an ultraviolet/infrared cut film, and 70 is an ultraviolet transmission filter. Patent applicant: Yamatake Honeywell Co., Ltd.
Fig. 7 *7vA (A) (B) Fig. 10 Wavelength (nm) Fig. 9 Fig. 11 Fig. l112 Fig. lN13 Fair skin Normal skin Dark skin Skin color jllllll/Cm' 1 Written amendment (method) % formula % 1. Indication of the case Japanese Patent Application No. 63-91162 2. Name of the invention Sunlight ultraviolet ray sensor 3. Person making the amendment
Claims (6)
陽電池の受光面側に設けられ、太陽光中における波長の
長い紫外線を透過する長波用紫外線透過フィルタと、同
じく上記太陽光の受光面側に設けられ、太陽光中の波長
の短い紫外線を透過する短波用紫外線透過フィルタとを
備えた太陽光の紫外線センサ。(1) A solar cell that generates an electromotive force due to sunlight; a long-wave ultraviolet transmission filter that is installed on the light-receiving surface side of the solar cell and transmits long-wavelength ultraviolet rays in sunlight; A sunlight ultraviolet sensor equipped with a shortwave ultraviolet transmission filter installed on the side and transmitting short-wavelength ultraviolet rays in sunlight.
紫外線透過フィルタとの間には、これらの紫外線透過フ
ィルタを透過した紫外線により発光して上記太陽電池に
起電力を発生させる蛍光体が設けられている請求項１記
載の太陽光の紫外線センサ。(2) Between the light-receiving surface of the solar cell and the long-wave and short-wave ultraviolet transmission filters, there is a phosphor that emits light from the ultraviolet light transmitted through these ultraviolet transmission filters and generates an electromotive force in the solar cell. The solar ultraviolet ray sensor according to claim 1, further comprising:
紫外線透過フィルタに存在する二次透過帯域を透過した
赤外光をカットする赤外線カットフィルタが設けられて
いる請求項１記載の太陽光の紫外線センサ。(3) The solar cell according to claim 1, wherein the light-receiving surface of the solar cell is provided with an infrared cut filter that cuts infrared light that has passed through a secondary transmission band present in the long-wave and short-wave ultraviolet transmission filters. Light UV sensor.
該蛍光体を透過した紫外線と上記長波用および短波用紫
外線透過フィルタの副透過帯を透過してくる赤外光とを
カットする紫外線・赤外線カット膜が設けられている請
求項２記載の太陽光の紫外線センサ。(4) Between the light-receiving surface of the solar cell and the phosphor,
3. The sunlight according to claim 2, further comprising an ultraviolet/infrared cut film that cuts ultraviolet light transmitted through the phosphor and infrared light transmitted through the sub-transmission bands of the long-wave and short-wave UV transmitting filters. UV sensor.
長の長い紫外線でのみ発光する長波用蛍光体と、上記紫
外線透過フィルタを透過した波長の短い紫外線でのみ発
光する短波用蛍光体とからなっている請求項２または４
記載の太陽光の紫外線センサ。(5) The above-mentioned phosphor consists of a long-wave phosphor that emits light only with long-wavelength ultraviolet light that has passed through the ultraviolet transmission filter, and a short-wave phosphor that emits light only with short-wavelength ultraviolet light that has passed through the ultraviolet transmission filter. Claim 2 or 4
Ultraviolet sensor for sunlight as described.
蛍光体との間には、それらの蛍光体を透過した紫外線と
上記長波用および短波用紫外線透過フィルタの副透過帯
を透過してくる赤外光とをカットする紫外線・赤外線カ
ット膜が設けられている請求項５記載の太陽光の紫外線
センサ。(6) Between the light-receiving surface of the solar cell and the long-wave and short-wave phosphors, there is a space between the ultraviolet rays that have passed through those phosphors and the sub-transmission bands of the long-wave and short-wave ultraviolet transmission filters. 6. The sunlight ultraviolet sensor according to claim 5, further comprising an ultraviolet and infrared cut film that cuts off infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63091162A JPH0621816B2 (en) | 1988-04-13 | 1988-04-13 | UV sensor for sunlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63091162A JPH0621816B2 (en) | 1988-04-13 | 1988-04-13 | UV sensor for sunlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01262425A true JPH01262425A (en) | 1989-10-19 |
| JPH0621816B2 JPH0621816B2 (en) | 1994-03-23 |
Family
ID=14018791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63091162A Expired - Fee Related JPH0621816B2 (en) | 1988-04-13 | 1988-04-13 | UV sensor for sunlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621816B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5306917A (en) * | 1992-08-12 | 1994-04-26 | Reliant Laser Corporation | Electro-optical system for measuring and analyzing accumulated short-wave and long-wave ultraviolet radiation exposure |
| US5387798A (en) * | 1992-03-23 | 1995-02-07 | Nippon Telegraph And Telephone Corporation | UV-A, UV-B discrimination sensor |
| FR3125586A1 (en) * | 2021-07-26 | 2023-01-27 | L'oreal | portable device and method for measuring ultraviolet light with a visible light sensor |
| US11788886B2 (en) | 2020-12-09 | 2023-10-17 | L'oreal | Wearable device and method for measuring ultra-violet light with visible light sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6382326A (en) * | 1986-09-26 | 1988-04-13 | Kanagawa Pref Gov | Element for ultraviolet ray sensor |
-
1988
- 1988-04-13 JP JP63091162A patent/JPH0621816B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6382326A (en) * | 1986-09-26 | 1988-04-13 | Kanagawa Pref Gov | Element for ultraviolet ray sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387798A (en) * | 1992-03-23 | 1995-02-07 | Nippon Telegraph And Telephone Corporation | UV-A, UV-B discrimination sensor |
| US5306917A (en) * | 1992-08-12 | 1994-04-26 | Reliant Laser Corporation | Electro-optical system for measuring and analyzing accumulated short-wave and long-wave ultraviolet radiation exposure |
| US11788886B2 (en) | 2020-12-09 | 2023-10-17 | L'oreal | Wearable device and method for measuring ultra-violet light with visible light sensor |
| FR3125586A1 (en) * | 2021-07-26 | 2023-01-27 | L'oreal | portable device and method for measuring ultraviolet light with a visible light sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621816B2 (en) | 1994-03-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |