JPH05302853A - Integrating sphere apparatus - Google Patents

Integrating sphere apparatus

Info

Publication number
JPH05302853A
JPH05302853A JP6513091A JP6513091A JPH05302853A JP H05302853 A JPH05302853 A JP H05302853A JP 6513091 A JP6513091 A JP 6513091A JP 6513091 A JP6513091 A JP 6513091A JP H05302853 A JPH05302853 A JP H05302853A
Authority
JP
Japan
Prior art keywords
incident
integrating sphere
luminous flux
incident angle
window
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
JP6513091A
Other languages
Japanese (ja)
Inventor
Tatsumi Sato
辰巳 佐藤
Hironori Yamauchi
弘規 山内
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.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP6513091A priority Critical patent/JPH05302853A/en
Publication of JPH05302853A publication Critical patent/JPH05302853A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To reduce the opening area of an incident window, to reduce the opening ratio of an integrating sphere and to make it possible to measure the diffused reflection only based on the diffused reflection component by providing the constitution wherein luminous fluxes are cast into two reflection measuring windows at an incident angle 0 and a specified incident angle. CONSTITUTION:A main body 1 of an integrating sphere has two reflection measuring windows, wherein a sample 2 whose reflection is measured or a standard sample 2 is arranged. Incident windows A and B, through which measuring luminous flux or reference luminous flux is cast, are provided in correspondence with the reflection measuring windows. The window A is set so that the incident luminous flux 3 is cast on the sample at the specified incident angle and the reflected luminous flux 4 does not return to the incident window again. The incident window at the side A has the opening area of the size, which can sufficiently pass only the incident luminous flux, because the luminous flux 3 has the specified incident angle and the entire reflected luminous flux from the corresponding sample is supplemented with the inner wall of the integrating sphere. Namely aXb (a<a' and b<b'). Therefore, the area of the outer shaded part is increased, and the opening ratio is reduced by that amount.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、分光光度計の付属装置
としての積分球装置に関し、特に拡散反射、鏡面反射、
散乱透過光、濁度、くもり度、色彩の測定など広範囲な
測定に好適な積分球装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrating sphere device as an accessory device of a spectrophotometer, and more particularly to diffuse reflection, specular reflection,
The present invention relates to an integrating sphere device suitable for a wide range of measurements such as scattered transmitted light, turbidity, haze, and color.

【0002】[0002]

【従来の技術】従来の積分球装置においては、第2図に
示すとおり、2つの反射測定窓(標準試料または測定試
料2、2)に向かって積分球1内に入射する2つの光束
の入射角は0°(反射測定窓に対して垂直)であり、そ
の両入射窓の大きさ(断面積)は同じで、かつ、比較的
大きいものであった。すなわち、試料の拡散反射測定を
行う場合には、試料の鏡面反射成分をすべて入射窓より
積分球1外へ逃がして拡散反射成分のみの測定が望まし
い。しかし、通常、積分球内を通る光束は平行光に近い
ものの厳密な平行光ではなく、その反射光束4は入射窓
における入射光束3の大きさよりも大きくなるような光
線を含むので、したがって入射光束断面よりもより大き
な断面の光束を通過させる入射窓の大きさが必要となる
のである。
2. Description of the Related Art In a conventional integrating sphere apparatus, as shown in FIG. 2, two luminous fluxes incident on an integrating sphere 1 toward two reflection measurement windows (standard samples or measurement samples 2 and 2). The angle was 0 ° (perpendicular to the reflection measurement window), and the size (cross-sectional area) of both entrance windows was the same and was relatively large. That is, when the diffuse reflection measurement of the sample is performed, it is desirable to let all specular reflection components of the sample escape from the integrating window to the outside of the integrating sphere 1 and measure only the diffuse reflection component. However, normally, the light flux passing through the integrating sphere is close to parallel light, but is not exactly parallel light, and its reflected light flux 4 includes light rays larger than the size of the incident light flux 3 in the entrance window. The size of the entrance window that allows the light flux of a larger cross section than the cross section to be passed through is required.

【0003】[0003]

【発明が解決しようとする課題】従来の積分球装置にあ
っては、上記のように、光束入射窓が比較的大きく、そ
の開口比率が良くなかった。積分球の開口比率とは、積
分球開口部面積の総和/積分球内壁の面積をいい、積分
球内に入射した光を損失なく十分に散乱させるためには
これが小さい方が良い。
In the conventional integrating sphere device, as described above, the light beam entrance window is relatively large and the aperture ratio is not good. The opening ratio of the integrating sphere is the sum of the area of the integrating sphere opening / the area of the inner wall of the integrating sphere, and it is preferable that this is small in order to sufficiently scatter the light entering the integrating sphere without loss.

【0004】本発明は、従来と光束サイズが同じ条件下
でこの開口比率を小さくした積分球装置を得ることを目
的としている。
An object of the present invention is to obtain an integrating sphere device having a small aperture ratio under the same light flux size as the conventional one.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に、本発明の積分球装置においては、光束を2つの反射
測定窓に対し入射角0°と所定の入射角をもって入射さ
せるように構成すると共に、入射角0°側の入射窓を鏡
面反射光が通過できる大きさとし、所定の入射角側の入
射窓を入射光束のみが通過できる大きさとした。
In order to achieve the above object, in the integrating sphere device of the present invention, a light beam is made to enter two reflection measurement windows at an incident angle of 0 ° and a predetermined incident angle. At the same time, the incident window on the side of the incident angle of 0 ° is made large enough to pass the specular reflected light, and the incident window on the side of the predetermined incident angle is made large enough to pass only the incident light beam.

【0006】[0006]

【作 用】上記のように構成された積分球装置では、一
方の入射窓の開口面積を小さくできるので、その分積分
球の開口比率が小さくなり、入射角0°側の反射測定窓
に測定試料を配置し、所定の入射角側の反射測定窓に標
準試料を配置して、測定光束を入射角0°で、参照光束
を所定の入射角をもって、それぞれ積分球内へ入射させ
ることにより、測定試料からの鏡面反射成分を完全に取
り除いた拡散反射成分のみによる拡散反射測定ができ
る。
[Operation] In the integrating sphere device configured as described above, the opening area of one of the entrance windows can be made small, so that the opening ratio of the integrating sphere becomes smaller accordingly, and the measurement is performed at the reflection measurement window on the incident angle 0 ° side. By arranging the sample, arranging the standard sample in the reflection measurement window on the side of the predetermined incident angle, and letting the measurement light beam enter the integrating sphere at the incident angle of 0 ° and the reference light beam at the predetermined incident angle, respectively, Diffuse reflection measurement can be performed using only the diffuse reflection component obtained by completely removing the specular reflection component from the measurement sample.

【0007】[0007]

【実施例】以下、本発明の実施例について図面を参照し
て説明すると、第1図において、積分球本体1には反射
測定試料2または標準試料2が配置される2つの反射測
定窓を有し、これに対応して測定光束または参照光束を
積分球1内へ入射させる2つの入射窓A,Bが設けられ
ている。このうち一方の入射窓Aは、入射光束がその対
応する試料に対して所定の入射角をもって入射するよう
に配置されている。この入射角は、積分球内へ入射した
光束の反射光束が再度入射窓に戻らないように設定され
る。
Embodiments of the present invention will now be described with reference to the drawings. In FIG. 1, the integrating sphere body 1 has two reflection measurement windows in which a reflection measurement sample 2 or a standard sample 2 is arranged. Then, corresponding to this, two incident windows A and B for allowing the measurement light beam or the reference light beam to enter the integrating sphere 1 are provided. One of the incident windows A is arranged so that the incident light beam enters the corresponding sample at a predetermined incident angle. This incident angle is set so that the reflected light flux of the light flux entering the integrating sphere does not return to the entrance window again.

【0008】B側入射窓は、第2図に示した従来の積分
球と同様に、入射光束3に対してその対応する試料から
の鏡面反射光束4が十分に通過できる大きさの開口面積
となっている(a´×b´)。一方、A側入射窓は、そ
こから入射する入射光束3が所定の入射角を有し、対応
する試料からの反射光束のすべてが積分球内壁で補足さ
れるので、入射光束のみ十分通過できる大きさの開口面
積となっている。すなわち、a×b(a<a´、b<b
´)である。したがって、積分球内壁面のうち従来の積
分球と比較して、第1図(B)における外側斜線部の面
積が増えることになり、その分開口比率が小さくなる。
Like the conventional integrating sphere shown in FIG. 2, the B-side entrance window has an opening area large enough to allow the specularly reflected light flux 4 from the sample corresponding to the incident light flux 3 to pass through. (A'xb '). On the other hand, in the A-side entrance window, the incident light beam 3 entering from the A-side entrance window has a predetermined incident angle, and all the reflected light beams from the corresponding sample are captured by the inner wall of the integrating sphere. It is the opening area. That is, a × b (a <a ′, b <b
´). Therefore, as compared with the conventional integrating sphere on the inner wall surface of the integrating sphere, the area of the outer hatched portion in FIG. 1B is increased, and the aperture ratio is reduced accordingly.

【0009】測定にあたっては、A側入射窓から参照光
束を入射させ、B側入射窓から測定光束を入射させるこ
とにより、試料の拡散反射測定を行うことができ、逆
に、A側入射窓から測定光束を入射させ、B側入射窓か
ら参照光束を入射させるときには、試料の鏡面反射測定
を行うことができる。この場合の、光束の切換えは、通
常、分光光度計は参照光束/測定光束切換機能を具備し
ているので、容易に行うことができる。
In the measurement, the diffuse reflection measurement of the sample can be performed by making the reference light beam enter through the A-side entrance window and the measurement light beam through the B-side entrance window, and conversely, through the A-side entrance window. When the measurement light beam is made incident and the reference light beam is made incident through the B side entrance window, specular reflection measurement of the sample can be performed. In this case, the switching of the luminous flux can be easily performed since the spectrophotometer usually has a reference luminous flux / measurement luminous flux switching function.

【0010】[0010]

【発明の効果】本発明によれば、従来と光束サイズをそ
のままにして積分球の開口比率を小さくすることができ
る。
According to the present invention, it is possible to reduce the aperture ratio of the integrating sphere while keeping the light flux size unchanged from the conventional one.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の積分球装置と入射窓開口面積を示す図
である。
FIG. 1 is a diagram showing an integrating sphere device of the present invention and an entrance window opening area.

【図2】従来の積分球装置と入射窓開口面積を示す図で
ある。
FIG. 2 is a diagram showing a conventional integrating sphere device and an entrance window opening area.

【符号の説明】[Explanation of symbols]

1…積分球本体 2、2…反射測定試料または標準試料 3…入射光束 4…反射光束 1 ... Integrating sphere body 2, 2 ... Reflection measurement sample or standard sample 3 ... Incident light flux 4 ... Reflected light flux

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ダブルビーム積分球装置において、光束を
2つの反射測定窓に対し入射角0°と所定の入射角をも
って入射するように構成すると共に、入射角0°側の入
射窓を鏡面反射光が通過できる大きさとし、所定の入射
角側の入射窓を入射光束のみが通過できる大きさとした
ことを特徴とする積分球装置。
1. A double-beam integrating sphere device is configured so that a light beam is incident on two reflection measurement windows at an incident angle of 0 ° and a predetermined incident angle, and the incident window on the incident angle 0 ° side is specularly reflected. An integrating sphere device having a size that allows light to pass therethrough, and a size that allows only an incident light beam to pass through an entrance window on a predetermined incident angle side.
JP6513091A 1991-03-29 1991-03-29 Integrating sphere apparatus Pending JPH05302853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6513091A JPH05302853A (en) 1991-03-29 1991-03-29 Integrating sphere apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6513091A JPH05302853A (en) 1991-03-29 1991-03-29 Integrating sphere apparatus

Publications (1)

Publication Number Publication Date
JPH05302853A true JPH05302853A (en) 1993-11-16

Family

ID=13277986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6513091A Pending JPH05302853A (en) 1991-03-29 1991-03-29 Integrating sphere apparatus

Country Status (1)

Country Link
JP (1) JPH05302853A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0961243A (en) * 1995-08-24 1997-03-07 Minolta Co Ltd Apparatus for measuring reflecting characteristic
JP2002062189A (en) * 2000-08-24 2002-02-28 Shimadzu Corp Detector for spectrophotometry and integrating sphere- measuring instrument using it, and spectrophotometer
US7535559B2 (en) * 2004-09-17 2009-05-19 Japan Science And Technology Agency Object digitizing device using integrating sphere wave source

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453474A (en) * 1977-10-03 1979-04-26 Kiyoushin Kikou Kk Apparatus for raking feed out of silo
JPS5960229A (en) * 1982-09-29 1984-04-06 Shimadzu Corp Integrating sphere type reflection measuring device
JPS63167240A (en) * 1986-12-29 1988-07-11 Shimadzu Corp Spectrophotometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453474A (en) * 1977-10-03 1979-04-26 Kiyoushin Kikou Kk Apparatus for raking feed out of silo
JPS5960229A (en) * 1982-09-29 1984-04-06 Shimadzu Corp Integrating sphere type reflection measuring device
JPS63167240A (en) * 1986-12-29 1988-07-11 Shimadzu Corp Spectrophotometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0961243A (en) * 1995-08-24 1997-03-07 Minolta Co Ltd Apparatus for measuring reflecting characteristic
JP2002062189A (en) * 2000-08-24 2002-02-28 Shimadzu Corp Detector for spectrophotometry and integrating sphere- measuring instrument using it, and spectrophotometer
US7535559B2 (en) * 2004-09-17 2009-05-19 Japan Science And Technology Agency Object digitizing device using integrating sphere wave source

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