JPS62165546U - - Google Patents
Info
- Publication number
- JPS62165546U JPS62165546U JP5202087U JP5202087U JPS62165546U JP S62165546 U JPS62165546 U JP S62165546U JP 5202087 U JP5202087 U JP 5202087U JP 5202087 U JP5202087 U JP 5202087U JP S62165546 U JPS62165546 U JP S62165546U
- Authority
- JP
- Japan
- Prior art keywords
- component
- photoelectric conversion
- chlorophyll
- light
- model registration
- 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
- 229930002875 chlorophyll Natural products 0.000 claims description 12
- 235000019804 chlorophyll Nutrition 0.000 claims description 12
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 claims description 12
- 230000003595 spectral effect Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 claims 2
- 241000196324 Embryophyta Species 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 230000003760 hair shine Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図は、葉の透過光の波長と透過濃度の関係
を示したグラフ、第２図は、本考案の実施例によ
る葉緑素計の外観の側面図、第３図は、本考案の
実施例による葉緑素計の概略図、第４図は、第３
図に示された葉緑素計に使用されている分光光学
手段の分光特性を説明するための第１図と同様の
グラフ、第５図は、本考案の葉緑素計に使用され
る受光部の変形例を示す概略図、第６図は、第５
図に示された受光部に使用されているダイクロイ
ツクフイルターミラーの分光特性を示すグラフ、
第７図は、本考案の葉緑素計に使用される受光部
の他の変形例を示す概略図である。
２…光源、１０…回路手段、１２…表示部、１
３…ケーシング、１４，１５，１６…開口、１７
…葉、１８，１９…シヤープカツトフイルター、
２０，２１…光電変換素子、２７…ダイクロイツ
クフイルターミラー。
Figure 1 is a graph showing the relationship between the wavelength of transmitted light and the transmitted density of leaves, Figure 2 is a side view of the external appearance of a chlorophyll meter according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. A schematic diagram of a chlorophyll meter by
A graph similar to FIG. 1 for explaining the spectral characteristics of the spectroscopic optical means used in the chlorophyll meter shown in the figure, and FIG. 5 is a modified example of the light receiving section used in the chlorophyll meter of the present invention. 6 is a schematic diagram showing the 5th
A graph showing the spectral characteristics of the dichroic filter mirror used in the light receiving section shown in the figure.
FIG. 7 is a schematic diagram showing another modification of the light receiving section used in the chlorophyll meter of the present invention. 2...Light source, 10...Circuit means, 12...Display section, 1
3...Casing, 14, 15, 16...Opening, 17
...leaf, 18,19...sharp cut filter,
20, 21...Photoelectric conversion element, 27...Dichroic filter mirror.
Claims (1)
の試料支持部に支持されている葉に光を当て、そ
の光の一部を透過させるようにした光源、この透
過光を葉緑素によつて透過量が変化する短波長域
の所定の分光分布をもつ第１の成分と、葉緑素に
よつて透過量が変化しない長波長域の所定の分光
分布をもつ第２の成分とに分割する分光手段、こ
の分光分布の異なる２種類の光の成分の光量を同
時に測定するための２つの互に分光感度の異なる
光電変換素子、およびこの２つの光電変換素子の
２つの測定値の差に基づいて前記葉緑素量を直接
的に導き出すための回路手段からなり、前記分光
手段が、前記透過光の第１の成分および第２の成
分の分光分布の短波長側の限界と長波長側の限界
の少なくとも一方を決定するために分光光学素子
を使用し、他方の限界を決定するために前記光電
変換素子の分光特性を使用したことを特徴とする
葉緑素計。 (2) 前記分光光学素子が、前記第１の成分およ
び第２の成分の分光分布の短波長側の限界を決定
するためそれぞれの成分の光路中に配された２枚
のカツトフイルターであることを特徴とする実用
新案登録請求の範囲第１項記載の葉緑素計。 (3) 前記第１の成分を測定するための光電変換
素子が、ＧａＡｓＰ系のフオトダイオードであり
、前記第２の成分を測定するための光電変換素子
がシリコンフオトダイオードであることを特徴と
する実用新案登録請求の範囲第１項または第２項
記載の葉緑素計。 (4) 前記分光光学素子が、ダイクロイツクフイ
ルターミラーであることを特徴とする実用新案登
録請求の範囲第１項記載の葉緑素計。[Claims for Utility Model Registration] (1) A sample support part for supporting plant leaves, a light source that shines light on the leaves supported by this sample support part and transmits a part of the light. , this transmitted light is divided into a first component having a predetermined spectral distribution in the short wavelength range where the amount of transmission changes depending on the chlorophyll, and a second component having a predetermined spectral distribution in the long wavelength range where the amount of transmission does not change depending on the chlorophyll. two photoelectric conversion elements having mutually different spectral sensitivities for simultaneously measuring the light intensity of the two types of light components having different spectral distributions; and two photoelectric conversion elements of these two photoelectric conversion elements. the chlorophyll amount directly based on the difference between the two measured values; A chlorophyll meter characterized in that a spectroscopic optical element is used to determine at least one of the limits on the long wavelength side, and the spectral characteristics of the photoelectric conversion element are used to determine the other limit. (2) The spectroscopic optical element is two cut filters arranged in the optical path of each component to determine the short wavelength side limit of the spectral distribution of the first component and the second component. The chlorophyll meter according to claim 1 of the utility model registration claim, characterized by: (3) The photoelectric conversion element for measuring the first component is a GaAsP-based photodiode, and the photoelectric conversion element for measuring the second component is a silicon photodiode. The chlorophyll meter according to claim 1 or 2 of the utility model registration claim. (4) The chlorophyll meter according to claim 1, wherein the spectroscopic optical element is a dichroic filter mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987052020U JPH0142027Y2 (en) | 1987-04-06 | 1987-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987052020U JPH0142027Y2 (en) | 1987-04-06 | 1987-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62165546U true JPS62165546U (en) | 1987-10-21 |
| JPH0142027Y2 JPH0142027Y2 (en) | 1989-12-11 |
Family
ID=30876818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987052020U Expired JPH0142027Y2 (en) | 1987-04-06 | 1987-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0142027Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012073507A1 (en) * | 2010-12-02 | 2012-06-07 | 日本電気株式会社 | System, device, method and program for measurement of leaf area index |
| JPWO2014103181A1 (en) * | 2012-12-26 | 2017-01-12 | 日本電気株式会社 | Image measuring method, system, apparatus and program |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4217034Y1 (en) * | 1964-03-11 | 1967-09-30 | ||
| JPS50126484A (en) * | 1974-03-26 | 1975-10-04 |
-
1987
- 1987-04-06 JP JP1987052020U patent/JPH0142027Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4217034Y1 (en) * | 1964-03-11 | 1967-09-30 | ||
| JPS50126484A (en) * | 1974-03-26 | 1975-10-04 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012073507A1 (en) * | 2010-12-02 | 2012-06-07 | 日本電気株式会社 | System, device, method and program for measurement of leaf area index |
| JPWO2014103181A1 (en) * | 2012-12-26 | 2017-01-12 | 日本電気株式会社 | Image measuring method, system, apparatus and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0142027Y2 (en) | 1989-12-11 |
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