JPH01109248A - Lighting method - Google Patents
Lighting methodInfo
- Publication number
- JPH01109248A JPH01109248A JP26598587A JP26598587A JPH01109248A JP H01109248 A JPH01109248 A JP H01109248A JP 26598587 A JP26598587 A JP 26598587A JP 26598587 A JP26598587 A JP 26598587A JP H01109248 A JPH01109248 A JP H01109248A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent lamps
- period
- fluorescent
- voltages
- periods
- 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
- 238000000034 method Methods 0.000 title claims description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【発明の詳細な説明】
痩呈上立■肛衾更
この発明は、蛍光灯で被写体を照らす照明方法に関する
。DETAILED DESCRIPTION OF THE INVENTION This invention relates to an illumination method for illuminating a subject with a fluorescent lamp.
従】１え術−
一般に、製品の品質検査を行なうために、あるいは設備
の異常を検出するために高速度シャッタカメラが広く利
用されている。この場合、製品や設備等（被写体）が一
定の明るさになるようにその製品等を光源で照明する必
要があるが、通常の電源で照明する蛍光灯は５０Ｈｚあ
るいは６０Ｈｚの周波数に対応して点滅を繰り返してお
り、この蛍光灯が消灯している期間に高速度でシャッタ
が切られると、製品や設備等が撮影されないという問題
がある。このため、従来では１点滅回数を多くして上記
問題点を解消した高周波蛍光灯が利用されている。1. Technique - In general, high-speed shutter cameras are widely used to inspect the quality of products or to detect abnormalities in equipment. In this case, it is necessary to illuminate the product, equipment, etc. (subject) with a light source so that it has a constant brightness, but fluorescent lamps that are illuminated with a normal power supply cannot support frequencies of 50Hz or 60Hz. The fluorescent lamps blink repeatedly, and if the shutter is released at high speed while the fluorescent lamps are off, there is a problem that products, equipment, etc. will not be photographed. For this reason, conventionally, high-frequency fluorescent lamps have been used that solve the above problems by increasing the number of times the lamp blinks.
が しよ とする
しかしながら、高周波蛍光灯は、交流電源の周波数（５
０Ｈｚあるいは６０Ｈｚ）を高周波に変換するインバー
タ回路を必要とするため、非常に高価になるという問題
があった。However, high-frequency fluorescent lamps do not operate at the frequency of AC power (5
Since it requires an inverter circuit to convert 0 Hz or 60 Hz) into a high frequency, there is a problem in that it is very expensive.
また、ちらつきのない白熱灯で照明するものもあるが、
広範囲に一様に照明することが難しく。There are also some that are illuminated with flicker-free incandescent lamps,
Difficult to uniformly illuminate a wide area.
さらに１発熱や消費電力に問題があった。Furthermore, there were problems with heat generation and power consumption.
見豆立１敗
そこで、この発明は、上記問題点に鑑みてなされたもの
で、ちらつきが少なくしかも照明装置が安価に構成でき
る照明方法を提供することを目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a lighting method with less flickering and with which a lighting device can be constructed at low cost.
牌 を するための
この発明は、上記問題点を解決するために、複数の蛍光
灯を三相交流電源で点灯させて被写体を照らすものであ
る。In order to solve the above-mentioned problems, this invention for displaying tiles illuminates a subject by lighting a plurality of fluorescent lamps using a three-phase AC power source.
讃−一月一
複数の蛍光灯は三相交流電源によって点灯するので、被
写体はいずれかの蛍光灯で常に照らされることになる。Praise - January 1 Since multiple fluorescent lamps are lit by three-phase AC power, the subject will always be illuminated by one of the fluorescent lamps.
実１０号 以下、この発明の実施例を図面に基づいて説明する。Real No. 10 Embodiments of the present invention will be described below based on the drawings.
第１図はこの発明の方法を実施した照明装置のブロック
図を示したものであり、図において、１は三相交流電源
で、この三相交流電源１の出力端子１ａ−ｌｂ間に蛍光
灯２が、出力端子１ａ −ｌｃ間に蛍光灯３が、出力端
子１ｂ−ｌｃ間に蛍光灯４がそれぞれ接続されている（
蛍光灯２，３．４はΔ結線されている）。そして、三相
交流電源１の出力端子ｌａ −ｌｂ間から第２図の実線
で示す電圧ｖ１が、出力端子１ａ−ｌｃ間から第２図の
一点一線で示す電圧Ｖ、が、出力端子１ｂ−ｌｃ間から
第２図の二点鎖線で示す電圧ｖ、ｈがそれぞれ位相が１
２００づつずれて出力されるようになっている。なお、
各電圧Ｖ□。FIG. 1 shows a block diagram of a lighting device that implements the method of the present invention. In the figure, 1 is a three-phase AC power supply, and a fluorescent lamp is connected between the output terminals 1a and lb of this three-phase AC power supply 1. 2, a fluorescent lamp 3 is connected between the output terminals 1a and lc, and a fluorescent lamp 4 is connected between the output terminals 1b and lc (
Fluorescent lamps 2, 3, and 4 are Δ-connected). The voltage v1 shown by the solid line in FIG. 2 from between the output terminals la and lb of the three-phase AC power supply 1 is the voltage V shown by the dot-by-dot line in FIG. The voltages v and h shown by the two-dot chain line in Fig. 2 from between 1b and lc have a phase of 1, respectively.
The output is shifted by 200. In addition,
Each voltage V□.
Ｖ２．Ｖ、の周波数は５０Ｈｚあるいは６０Ｈｚである
。V2. The frequency of V is 50Hz or 60Hz.
したがって、いま、蛍光灯２に第２図の実線で示す電圧
Ｖ工が印加されると、例えば期間Ｔ工で蛍光灯２が点灯
する。同様に、蛍光灯３，４には一点鎖線、二点鎖線で
示す電圧Ｖ ＊ −Ｖ ３が印加するので、期間Ｔ１後
の期間Ｔ ｍ −Ｔ ａでその蛍光灯３゜４が点灯して
いく、ところで、期間Ｔユと期間Ｔ２との間の期間Ｓ１
で電圧Ｖｚ−Ｖｔが低くなるので、蛍光灯２，３は消灯
するが、その期間Ｓ１を含む期間Ｐ１で電圧ｖ３の絶対
値が大きくなるので蛍光灯４が点灯する。同様に、期間
Ｔ、−Ｔ、との間の期間Ｓ ｚ を期間Ｔ、−Ｔ、どの
間の期間Ｓ３で電圧（ｖ ｚ −ｖ ｓ ） （ｖ ｓ
−ｖ ｔ ）が低くなるので、蛍光灯（３゜４）、（
４，２）は消灯するが、その期間Ｓ、、Ｓ、を含む期間
ｐ、、ｐ、で電圧Ｖ、、Ｖ、の絶対値が大きくなるので
蛍光灯２，３が点灯する。したがって、三つの蛍光灯２
，３．４が同時に消灯することがなく、常に、いずれか
の蛍光灯２，３．４が点灯していることになる。Therefore, when the voltage V indicated by the solid line in FIG. 2 is applied to the fluorescent lamp 2, the fluorescent lamp 2 is turned on during a period T, for example. Similarly, since the voltage V*-V3 shown by the one-dot chain line and the two-dot chain line is applied to the fluorescent lamps 3 and 4, the fluorescent lamps 3 and 4 are turned on during the period Tm-Ta after the period T1. By the way, period S1 between period Tyu and period T2
Since the voltage Vz-Vt becomes low, the fluorescent lamps 2 and 3 are turned off, but the absolute value of the voltage v3 becomes large in a period P1 that includes the period S1, so the fluorescent lamp 4 is turned on. Similarly, the voltage (v z -v s ) (v s
-v t ) becomes lower, so fluorescent lights (3°4), (
4, 2) are turned off, but the absolute value of the voltages V, , V, becomes large during the periods p, , p, including the periods S, , S, so that the fluorescent lamps 2, 3 are turned on. Therefore, three fluorescent lamps 2
, 3.4 are not turned off at the same time, and one of the fluorescent lamps 2, 3.4 is always on.
ところで、各蛍光灯２，３．４は５０Ｆｌｚあるいは６
０Ｈｚの周波数に対応して点滅するが、各蛍光灯２゜３
．４の点滅時期が上述のようにそれぞれずれるため、全
体として所定以上の光量で製品や設備等（被写体）を照
らすことになり、ちらつきが減少する。また、製品や設
備等はいずれかの蛍光灯２゜３．４で常に照らされるこ
とになるので、高速度シャッターカメラで製品や設備を
撮影することができる。By the way, each fluorescent lamp 2, 3.4 is 50 Flz or 6
It blinks in response to a frequency of 0Hz, but each fluorescent lamp has a frequency of 2°3
．． Since the blinking timings of 4 are shifted from each other as described above, products, equipment, etc. (subjects) are illuminated with a total amount of light greater than a predetermined amount, and flickering is reduced. Furthermore, since the products and equipment are always illuminated by one of the 2°3.4 fluorescent lamps, it is possible to photograph the products and equipment with a high-speed shutter camera.
また、複数の蛍光灯を三相交流電源で点灯ゝさせただけ
であるから照明装置を安価に構成することができる。Furthermore, since a plurality of fluorescent lamps are simply turned on using a three-phase AC power source, the lighting device can be constructed at low cost.
第３図は他の実施例を示したもので、これは。FIG. 3 shows another embodiment.
蛍光灯２，３．４をＹ結線して三相交流電源１の出力端
子１ａ、 ｌｂ、 ｌｃにそれぞれ接続したものであり
、作用効果は上記と同様である。The fluorescent lamps 2, 3.4 are Y-connected and connected to the output terminals 1a, lb, and lc of the three-phase AC power supply 1, respectively, and the effects are the same as those described above.
ｌ■立羞米
以上のように、この発明は、複数の蛍光灯を三相交流電
源で点灯させて被写体を照らすものであるから、被写体
はいずれかの蛍光灯で常に照らされることになり、した
がって、高速度シャッターカメラで製品や設備を撮影す
ることができ、また、複数の蛍光灯を三相交流電源で点
灯させただけであるから安価に照明装置を構成すること
ができる等の効果を有する。As mentioned above, since this invention illuminates the subject by lighting multiple fluorescent lamps using three-phase AC power, the subject will always be illuminated by one of the fluorescent lamps. Therefore, products and equipment can be photographed using a high-speed shutter camera, and since multiple fluorescent lamps are simply lit using a three-phase AC power supply, lighting devices can be constructed at low cost. have
第１図はこの発明の方法を実施した照明装置のブロック
図、第２図は三相交流電圧の説明図、第３図は他の実施
例の説明図である。
１・・・三相交流電源、
２・・・蛍光灯
３・・・蛍光灯
４・・・蛍光灯FIG. 1 is a block diagram of a lighting device implementing the method of the present invention, FIG. 2 is an explanatory diagram of three-phase AC voltage, and FIG. 3 is an explanatory diagram of another embodiment. 1...Three-phase AC power supply, 2...Fluorescent lamp 3...Fluorescent lamp 4...Fluorescent lamp
Claims (1)
すことを特徴とする照明方法A lighting method characterized by illuminating a subject by lighting multiple fluorescent lamps using a three-phase AC power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26598587A JPH01109248A (en) | 1987-10-21 | 1987-10-21 | Lighting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26598587A JPH01109248A (en) | 1987-10-21 | 1987-10-21 | Lighting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01109248A true JPH01109248A (en) | 1989-04-26 |
Family
ID=17424765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26598587A Pending JPH01109248A (en) | 1987-10-21 | 1987-10-21 | Lighting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01109248A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1752291A1 (en) * | 2005-08-11 | 2007-02-14 | DeCoSystem S.r.l. | Improved method and device for the quality control of printed materials |
| JP2011009214A (en) * | 2009-06-29 | 2011-01-13 | Tai-Her Yang | Lighting system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324150U (en) * | 1976-08-07 | 1978-03-01 |
-
1987
- 1987-10-21 JP JP26598587A patent/JPH01109248A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324150U (en) * | 1976-08-07 | 1978-03-01 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1752291A1 (en) * | 2005-08-11 | 2007-02-14 | DeCoSystem S.r.l. | Improved method and device for the quality control of printed materials |
| JP2011009214A (en) * | 2009-06-29 | 2011-01-13 | Tai-Her Yang | Lighting system |
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