JPS6182122A - Color detecting device - Google Patents

Color detecting device

Info

Publication number
JPS6182122A
JPS6182122A JP59203857A JP20385784A JPS6182122A JP S6182122 A JPS6182122 A JP S6182122A JP 59203857 A JP59203857 A JP 59203857A JP 20385784 A JP20385784 A JP 20385784A JP S6182122 A JPS6182122 A JP S6182122A
Authority
JP
Japan
Prior art keywords
ratio
color
light
detection
photodetecting elements
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
JP59203857A
Other languages
Japanese (ja)
Inventor
Takahiro Sakamoto
孝宏 坂本
Shunsuke Nonaka
野中　俊助
Akihiko Kon
昭彦 昆
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.)
Azbil Corp
Original Assignee
Azbil 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 Azbil Corp filed Critical Azbil Corp
Priority to JP59203857A priority Critical patent/JPS6182122A/en
Publication of JPS6182122A publication Critical patent/JPS6182122A/en
Pending legal-status Critical Current

Links

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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/22—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means
    • G01J1/24—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means using electric radiation detectors
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • G01J3/513—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters having fixed filter-detector pairs
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/466—Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To make special corrections and to perform color detection by varying optionally the quantity of luminous flux distributed to respective color separating and photodetecting elements and adjusting their quantities of photodetection, and determining the output ratio of those color separating and photodetecting elements optionally. CONSTITUTION:This detector consists of an optical fiber bundle 1, i.e. FR', FG', and FB' for guiding detection light, plural photodetecting elements 2, i.e. CR', CG', and CB', and plural amplifiers 3, i.e. three detection systems R', G', and B' of AR', AG', and AB'. Here, the sensitivity ratio of the photodetecting elements CR', CG', and CB' is not 1:1:1. When the ratio is 3:2:1 and the quantity ratio of optical fibers 1 is FR':FG':FB':2:3:6, ideal light 10 from a detection body 4 is photodetected by the color detecting device and the output ratio of outputs of the photodetecting elements 2 is 1:1:1. Therefore, the ratio of the three detection systems R', G', and B' for the ideal light 10 is set to 1:1:1, amplification factors AR', AG', and AB' of the amplifiers 3 are only set to 1:1:1 and there is no trouble due to a difference in amplification factor among the amplifiers 3.

Description

【発明の詳細な説明】 この発明は色彩検出装置の改良に関する。[Detailed description of the invention] This invention relates to improvements in color detection devices.

「従来装置およびその問題点」 従来の色分解受光素子群と光ファイバー束を用〜・た色
彩検出装置は、検出光を受光素子群に導くにあたり、そ
れぞれの受光素子に対し、同量の光ファイバー束を配し
て〜・る。これらの受光素子群はそれぞれ感度が異なる
ため、分光分布特性が受光素子群の検出波長域で平坦な
理想光ｌＯを同光量ずつ受けたとしても、これらの受光
素子群の出力比は１：１：・・・・・・＝１にはならな
（・。第２図に従来例を示す。この色彩検出装置は、検
出体４からの検出光を導く光ファイバー１すなわちＦＲ
，ＦＧＦｔｔ，色分解受光素子２すなわち（：ｎ，　Ｃ
ａ，ＣＩ　、およびそれかれの信号を増幅するアンプ３
すなわちＡＲ，　Ａ（１，　Ａｌｌから成って（・る。"Conventional devices and their problems" Conventional color detection devices that use color-separating light-receiving elements and optical fiber bundles use the same amount of optical fiber bundles for each light-receiving element to guide detection light to the light-receiving elements. I arranged ~・ru. Since these photodetector groups each have different sensitivities, even if they receive the same amount of ideal light lO whose spectral distribution characteristics are flat in the detection wavelength range of the photodetector groups, the output ratio of these photodetector groups will be 1:1. :...=1 (...A conventional example is shown in FIG.
, FGFtt, color separation light receiving element 2, i.e. (:n, C
a, CI, and an amplifier 3 that amplifies their signals.
That is, it consists of AR, A(1, All).

ここで３つの光７アイパーの量は同量である。これらの
検出系をそれぞれＲ，Ｇ，Ｂとする。仮に、前述の理想
光１０を用〜・たときに各受光素子ＣＢ，　ＣＧ，　Ｃ
Ｂの感度比が３：２：１であれば各受光素子ＣＢ，　Ｃ
Ｇ，　Ｃ１１の出力比も３：２：１となる。第２図の色
彩検出装置を使用するとき、前述の理想光１０の検出を
Ｒ：Ｇ：Ｂ＝１：１：１としたければ、アンプ３の増幅
率を調整し、ＡＲ：　ＡＧ：　ＡＢ＝２　：　３　：　
６の比率にする必要がある。しかし各検出系のアンプの
増幅率が異なることによって、・温度変化，ノイズ，電
源電圧の変動などのアンプが受ける影響がそのまま出力
比の変動になり、色彩検出に不具合が生じるたとえば周
囲温度２５℃で３系統Ｒ，Ｇ、Ｂの出力がＩＶ、ＩＶ、
ＩＶであったとする。アンプ３の増幅率がそれぞれＡｌ
１００倍、　ＡＯ５００倍、Ａ冨１０００　　倍として
、アンプの温度ドリフト特性がα０５ｍＶ　／　℃であ
ったとする。周囲温度が１０℃上昇すると検出系Ｒ，Ｇ
、Ｂの出カバＬ　０５Ｖ　、　Ｌ２５ｖ、ｉ、ｓｖに変
化してしまう。このように温度変化によって出力比が変
動してしまうようでは安定した色彩検出ができな（・た
め、何らかの補正を加え、出力比を安定させる必要があ
る。補正するＫは複雑な技術を用〜・なければならず、
色彩検出装置の信頼性、コスト面で新たな問題を生じる
。Here, the amounts of the three optical 7-eyepers are the same. Let these detection systems be R, G, and B, respectively. If the above-mentioned ideal light 10 is used, each light receiving element CB, CG, C
If the sensitivity ratio of B is 3:2:1, each light receiving element CB, C
The output ratio of G and C11 is also 3:2:1. When using the color detection device shown in FIG. 2, if you want to detect the ideal light 10 described above at R:G:B=1:1:1, adjust the amplification factor of the amplifier 3 and set AR: AG: AB =2:3:
It needs to be a ratio of 6. However, because the amplification factors of the amplifiers in each detection system are different, the effects of temperature changes, noise, power supply voltage fluctuations, etc. on the amplifiers directly change the output ratio, causing problems in color detection.For example, when the ambient temperature is 25°C The outputs of the three systems R, G, and B are IV, IV,
Suppose it was IV. The amplification factor of amplifier 3 is Al
Assume that the temperature drift characteristic of the amplifier is α05 mV/° C. with 100 times the power, 500 times the AO, and 1000 times the A depth. When the ambient temperature rises by 10℃, detection systems R and G
, B changes to output cover L 05V , L25v, i, sv. If the output ratio fluctuates due to temperature changes in this way, stable color detection cannot be performed. Therefore, it is necessary to add some kind of correction to stabilize the output ratio.・Must be,
This creates new problems in terms of reliability and cost of color detection devices.

「目的」 この発明はこのような従来の欠点を解消しようとするも
ので、感度比が異なる色分解受光素子群に配する光ファ
イバー束を受光素子の感度比に合わせてその量を調整し
て配し、アンプの増幅率の比が異なることＫよるさまざ
まな影響を除き、安定した色彩検出を行おうとするもの
である。``Purpose'' This invention aims to eliminate such conventional drawbacks, and it is an object of the present invention to arrange optical fiber bundles arranged in groups of color-separated light-receiving elements having different sensitivity ratios by adjusting the amount according to the sensitivity ratio of the light-receiving elements. However, it is an attempt to perform stable color detection by eliminating various influences caused by the difference in the ratio of the amplification factors of the amplifiers.

「要旨」 そこで従来の不具合を解消する方法は、アンプの増幅率
をすべて同じにするのが最も単純な方法である。そのた
めに受光素子の感度に適した光量をそれぞれの受光素子
に照射すればよく、各受光素子ＣＢ、ＣＧ、ＣＩの感度
比が１：２：３であるなら照射する光量を２：３：６す
なわち、光７アイパー束１の数量比を単純に２：３：６
０割合で３検出系Ｒ，Ｇ、Ｂに配してやればよ（・。こ
の発明はこのような方法でアンプの増幅率に起因すると
ころの出力比の変動を抑制し、特別な補正を加えず、出
力値の単純な処理のみで色彩検出を行う色彩検出装置を
実現するものである。``Summary'' Therefore, the simplest way to solve the conventional problem is to make all amplifiers have the same amplification factor. For this purpose, it is sufficient to irradiate each light receiving element with an amount of light suitable for the sensitivity of the light receiving element. If the sensitivity ratio of each light receiving element CB, CG, CI is 1:2:3, the amount of light to be irradiated is 2:3:6. In other words, the quantitative ratio of light 7 eyeper flux 1 is simply 2:3:6
All you need to do is to arrange them in the three detection systems R, G, and B at a ratio of 0.This invention uses this method to suppress fluctuations in the output ratio caused by the amplification factor of the amplifier, without adding any special correction. , to realize a color detection device that performs color detection only by simple processing of output values.

「実施例」 以下図によってこの発明の一実施例につ〜・て説明する
。"Embodiment" An embodiment of the present invention will be described below with reference to the drawings.

すなわち第１図に示すこの発明の色彩検出装置は検出光
を導く光ファイバー束１すなわちｐｉ／、　ｐｏ／ＦＢ
′、複数の受光素子２すなわちＣＲ’、　（：’ｏ’、
　ＣＢ’および複数のアンプ３すなわちＡＲ’、　ＡＧ
’、　Ａｍ’の３検出系Ｒ′、Ｇ’、Ｂ’からなる。こ
こで受光素子ＣＢ’、　ＣＧ’、　ＣＢ’の感度比は１
：１：１ではな−・。受光素子ＣＢ’、　ＣＧ’。That is, the color detection device of the present invention shown in FIG.
', a plurality of light receiving elements 2, ie, CR', (:'o',
CB' and multiple amplifiers 3 i.e. AR', AG
It consists of three detection systems R', G', and B': ', Am'. Here, the sensitivity ratio of photodetectors CB', CG', and CB' is 1
:1:1 isn't it? Light receiving elements CB', CG'.

Ｃ−′の比が３：２：１として、光ファイバー１の数量
比をＦＲ’：　ＦＧ’：　ＦＢ’＝　２　：　３　：　
６とすれば（従来例に示した検出体４からの理想光１０
を第１図の色彩検出装置で受光すると、受光素子の出力
比は１：ｌ：１となる。したがって理想光１０に対して
３検出系Ｒ／、　Ｑ／、　１３／を１：１：１の比率に
したければ、アンプの増幅率ＡＦＬ’、　ＡＧ’、　Ａ
ｌｌ’を１：１：１の比率に設定すればよ（、アンプの
増幅率が異なることによる様々な不具合は生じな〜・。Assuming that the ratio of C-' is 3:2:1, the quantity ratio of optical fiber 1 is FR': FG': FB' = 2: 3:
6 (ideal light 10 from the detection object 4 shown in the conventional example)
When the light is received by the color detection device shown in FIG. 1, the output ratio of the light receiving element becomes 1:1:1. Therefore, if you want the ratio of the three detection systems R/, Q/, 13/ to the ideal light 10 to be 1:1:1, the amplifier amplification factors AFL', AG', A
If you set ll' to a ratio of 1:1:1, various problems will not occur due to the difference in the amplification factors of the amplifiers.

「効果」 この発明は上述のようにそれぞれの色分解受光素子に配
する光ファイバー束の量を任意に変えることによって受
光量の調整をし、これら色分解受光素子群の出力比を任
意に決定するよ５Ｋｌて（・るので、アンプの増幅率に
起のするところの出力比の変動を抑制し、特別な補正を
加えることなく出力値の単純な処理のみで色彩検出を行
うことができる効果がある。"Effects" As described above, this invention adjusts the amount of light received by arbitrarily changing the amount of optical fiber bundles arranged in each color-separating light-receiving element, and arbitrarily determines the output ratio of these color-separating light-receiving element groups. This has the effect of suppressing fluctuations in the output ratio caused by the amplification factor of the amplifier and allowing color detection to be performed by simple processing of the output value without adding any special correction. be.

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

第１図はこの発明における色彩検出装置の一実施例を示
す構成図、第２図は従来の色彩検出装置の構成図である
。 １　（Ｆｎ’、　Ｆｏ’、　ＦＢ／　）　　・・・光フ
ァイバー束２　（ＣＲ’、　ＣＧ’、　Ｃ１１’　）　
・・・受光素子３　（ＡＲ’、　ＡＣ’、　Ａｌｌ’　
）　　・・・アンプＲ／、　Ｇ／、　Ｂ／　・・・検出
系 ４・・・検出体 特許　出　願人　　山武ハネウェル株式会社第２図 ＣｃＩ 手続補正書（自発）FIG. 1 is a block diagram showing an embodiment of a color detection device according to the present invention, and FIG. 2 is a block diagram of a conventional color detection device. 1 (Fn', Fo', FB/)...Optical fiber bundle 2 (CR', CG', C11')
... Light receiving element 3 (AR', AC', All'
)...Amplifier R/, G/, B/...Detection system 4...Detection object patent Applicant: Yamatake Honeywell Co., Ltd. Figure 2 CcI Procedural amendment (voluntary)

Claims (1)

【特許請求の範囲】[Claims] 分光感度特性の異なる複数の受光素子によって構成され
る色分解受光素子群を有し、光ファイバー束によって検
出光を色分解受光素子群の受光面に導き、色彩検出する
色彩検出装置において、それぞれの色分解受光素子に配
する光ファイバー束の量を任意に変えることによって、
受光量の調整をし、これら色分解受光素子群の出力比を
任意に決定することを特徴とする色彩検出装置。In a color detection device that has a color separation light receiving element group composed of a plurality of light receiving elements with different spectral sensitivity characteristics, the detection light is guided to the light receiving surface of the color separation light receiving element group by an optical fiber bundle, and the color is detected. By arbitrarily changing the amount of optical fiber bundles arranged in the decomposed photodetector,
A color detection device characterized by adjusting the amount of received light and arbitrarily determining the output ratio of these color separation light receiving element groups.
JP59203857A 1984-09-28 1984-09-28 Color detecting device Pending JPS6182122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59203857A JPS6182122A (en) 1984-09-28 1984-09-28 Color detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59203857A JPS6182122A (en) 1984-09-28 1984-09-28 Color detecting device

Publications (1)

Publication Number Publication Date
JPS6182122A true JPS6182122A (en) 1986-04-25

Family

ID=16480842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59203857A Pending JPS6182122A (en) 1984-09-28 1984-09-28 Color detecting device

Country Status (1)

Country Link
JP (1) JPS6182122A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106830A (en) * 1980-12-24 1982-07-02 Fuji Electric Co Ltd Color detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106830A (en) * 1980-12-24 1982-07-02 Fuji Electric Co Ltd Color detector

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