JPS5814101A - Illuminance attenuation device - Google Patents
Illuminance attenuation deviceInfo
- Publication number
- JPS5814101A JPS5814101A JP11215681A JP11215681A JPS5814101A JP S5814101 A JPS5814101 A JP S5814101A JP 11215681 A JP11215681 A JP 11215681A JP 11215681 A JP11215681 A JP 11215681A JP S5814101 A JPS5814101 A JP S5814101A
- Authority
- JP
- Japan
- Prior art keywords
- attenuation
- illuminance
- blocks
- attenuation device
- light
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Filters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、減衰率の制御が容易な照度減衰装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an illumination attenuation device whose attenuation rate can be easily controlled.
光電変換素子の光導電特性の測定等、照度をパラメータ
として特性を測定する場合には、一般に基準の光源に照
度減衰装置を併用して所望の照度を実現している。When measuring characteristics using illuminance as a parameter, such as measuring the photoconductive characteristics of a photoelectric conversion element, a desired illuminance is generally achieved by using an illuminance attenuation device in combination with a reference light source.
従来この種の照度減衰装置としては、一般にぬフィルタ
が用いられ、各種ＮＤフィルタの組合せを変えることに
よｐ１透過率を制御していた。Conventionally, in this type of illuminance attenuation device, an ordinary filter has been used, and the p1 transmittance has been controlled by changing the combination of various ND filters.
しかしながら、このような方法による場合、何種類かの
ＮＤフィルタの組合せによって透過率を決めるため、所
望の透過率を任意に得ることは困難であった。１′ＡＣ
１交換の際、フィルタの主面に指紋や脂肪′ｆ：酊けな
いようにするなど、取扱いが面倒であった。更に、自動
機構にょシフィルタ交換を行なうようにした場合には、
必要なＮＤンイルメの数が多いために機構自体が大きく
なり、逆にＮＤフィルタの数を減らして組換えを行なう
と、機構は小さくはなるが複雑になるという欠点を有し
ていた。However, in such a method, the transmittance is determined by a combination of several types of ND filters, so it is difficult to arbitrarily obtain the desired transmittance. 1'AC
When replacing the filter, it was difficult to handle, as it was necessary to avoid getting fingerprints or fat on the main surface of the filter. Furthermore, if the automatic mechanism is used to replace the filter,
Since the number of ND filters required is large, the mechanism itself becomes large, and conversely, when the number of ND filters is reduced and recombination is performed, the mechanism becomes smaller but becomes more complex.
不発ｆ！Ａは、以上のような状況に鑑みてなされたもの
であシ、その目的は、簡単な機構で任意の減衰量を容易
に得ることが可能な照度減衰装置を得ることにある。Misfire f! A has been developed in view of the above situation, and its purpose is to obtain an illuminance attenuation device that can easily obtain an arbitrary amount of attenuation with a simple mechanism.
このような目的を達成するために、本発明による照度減
衰装置は、対向面に沿って互に逆向きで絶対値の等しい
勾配で変化する光減衰率を備えた２つの減衰ブロックを
設け、少なくとも１方の減衰ブロックが前記傾きの方向
に移動できるようにしたものである。To achieve this objective, the illuminance attenuation device according to the present invention includes two attenuation blocks having light attenuation coefficients that change with gradients of opposite directions and equal absolute values along opposing surfaces, and at least One of the damping blocks is movable in the direction of the inclination.
以下、実施例を用いて本発明による照度減衰装置を詳細
に説明する。Hereinafter, the illuminance attenuation device according to the present invention will be explained in detail using examples.
第１図は、本発明による照度減衰装置の一実施例を示す
原理図である。同図において、照度減衰装置１は、２つ
の減衰ブロック１ａおよび１ｂで構成してあり、光源２
と減衰した光を照射すべき対象物３との間に設置しであ
る。ここで、減衰ブロック１ａ 、 ｌｂの図形は、そ
れらの実形状を宍わすものではなく、透過率の分布を示
している。即ち、各減衰ブロック１ａ、ｌｂは、光源２
からの光４に対して互に向きが逆で大きさの等しい傾き
を有する透過率を備えている。FIG. 1 is a principle diagram showing an embodiment of an illumination attenuation device according to the present invention. In the figure, the illuminance attenuation device 1 is composed of two attenuation blocks 1a and 1b, and a light source 2
and the object 3 to which the attenuated light is to be irradiated. Here, the shapes of the attenuation blocks 1a and lb do not represent their actual shapes, but indicate the transmittance distribution. That is, each attenuation block 1a, lb has a light source 2
The transmittances of the light 4 are opposite in direction and have the same slope.
上記構成を有する照度減衰装置において、光源２を発し
た光４は、減衰ブロック１ａおよび１ｋを透過する間に
それぞれの減衰率に応じ九減衰を受けて、対象ｔｉｌｌ
！７３の照射部３ａ に到達する。従って、照射部分３
ａにおける照度は、両減衰ブロック１ａおよび１ｂにお
ける減衰によって決まる０ここで、第２図に示すように
両減衰ブロック１ａ。In the illuminance attenuation device having the above configuration, the light 4 emitted from the light source 2 undergoes nine attenuations according to the attenuation rates of the attenuation blocks 1a and 1k while passing through the attenuation blocks 1a and 1k.
! It reaches the irradiation section 3a of 73. Therefore, the irradiated part 3
The illuminance at a is determined by the attenuation in both attenuation blocks 1a and 1b, where both attenuation blocks 1a as shown in FIG.
１ｂ の相対位ｔ？：透過率の傾きの方向にずらし、光
４に対する重畳部分を変えることによハ減衰量を連続的
に変化させ、任意の照度を得ることができる。また、こ
の場合、両減衰ブロック１１と１ｂ とは、光４に対し
てその減衰率の傾きが逆向きで等しい大きさであるため
、照射部３ａにおける照度は、大きさ自体は変わっても
、その均一性は常に保持される。両減衰ブロックｌａ、
ｌｂの相対位置をずらすには、両者を互に移動してもよ
いし、どちらか一方のみを移動してもよい。Relative position t of 1b? : By shifting in the direction of the slope of the transmittance and changing the superimposed portion on the light 4, the amount of attenuation (C) can be continuously changed, and an arbitrary illuminance can be obtained. In this case, both attenuation blocks 11 and 1b have the same size and the slopes of their attenuation rates are opposite to the light 4, so the illuminance at the irradiation section 3a changes even though the size itself changes. Its uniformity is always maintained. both damping blocks la,
In order to shift the relative position of lb, both may be moved relative to each other, or only one of them may be moved.
第３図は、本発明による照度減衰装置の他の実施例會示
す原理図であ、Ｄ、ｇｔ図と同一もしくは相当部分は同
一記号を用いてその詳細説８Ａｆ：省略する。本実施例
の照度減衰装ｆ１は、第１図と同様の１対の減衰ブロッ
ク１ｍ 、 １ｂに加え、光４に対して傾きｔ持たない
均一な減衰率を有する減衰ブロック１ａを備えている０
このように減衰ブロック１ｃ ’ｃ挿入することにより
、所望の照度の調整範囲が大きい場合に、必要な減衰量
を補うことが可能となる。FIG. 3 is a principle diagram showing another embodiment of the illuminance attenuation device according to the present invention, and the same or corresponding parts as in FIGS. The illuminance attenuation device f1 of this embodiment includes a pair of attenuation blocks 1m and 1b similar to those shown in FIG. By inserting the attenuation block 1c'c in this manner, it becomes possible to compensate for the necessary amount of attenuation when the desired illuminance adjustment range is large.
なお、この場合、挿入する減衰ブロック１ｃは１個に限
定されるものではなく、同様に均一な減衰率の減衰ブロ
ックを２個以上併用してもよいことは勿論である。In this case, the number of attenuation blocks 1c to be inserted is not limited to one, and it goes without saying that two or more attenuation blocks having a uniform attenuation rate may be used together.
同じように、減衰率に傾きを有する減衰ブロックｉａ
、 ｌｂも１対にのみ限定されるものではなく、２対以
上併用することにより、調整幅を大きくすることができ
る。Similarly, an attenuation block ia with a slope in the attenuation rate
, lb is not limited to only one pair, and by using two or more pairs together, the adjustment range can be increased.
また、これら逆向きで大きさの等しい傾きを有する減衰
率を備え之１対の減衰ブロック１ｍ、１ｂの外形は、特
に限定はないが、例えば、第４図に示すようにそれぞれ
の減衰率の分布に即した５面体、あるいは通常の平行６
面体等が、それらの相対位置を変化させる際の移動に関
しても、取扱いが容易である。Further, the outer shape of the pair of damping blocks 1m and 1b having damping factors having opposite directions and equal slopes is not particularly limited, but for example, as shown in FIG. Pentahedron according to the distribution or normal parallel 6
It is also easy to handle the movement of the face pieces and the like when changing their relative positions.
更に、減衰ブロック１ａおよび１ｂとして干渉フィルタ
を用いることによシ、特定の波長の元のみ全透過させ、
かつその減衰量を任意に調整することができる。減衰ブ
ロック１ｃ ｋ干渉フィルタとした場合にも、同様の効
果を得ることができる。Furthermore, by using interference filters as the attenuation blocks 1a and 1b, only the source of a specific wavelength is completely transmitted.
Moreover, the amount of attenuation can be adjusted arbitrarily. A similar effect can be obtained when the attenuation block 1c k interference filter is used.
以上説明したように、本発明による照度減衰装置によれ
ば、対向面に沿って向きが逆で大きさの等しい傾きで変
化する光減衰率を備えた２つの減衰ブロックを設け、両
者の相対位置を前記傾きの方向にずらすことによシ、減
衰量全連続的に調整し、任意の、かつ一定の照射部内で
均一な照度を得ることができる。また、照度の調整は両
減衰ブロックを相対的にスライドさせることのみによっ
て行なえるため、操作が簡単であＱ５かつ自動化も容易
である等、種々優れた効果を有する。As explained above, according to the illuminance attenuation device according to the present invention, two attenuation blocks are provided along opposing surfaces with light attenuation factors that change with opposite directions and equal inclinations, and the relative position of the two blocks is By shifting in the direction of the inclination, the amount of attenuation can be adjusted completely continuously, and uniform illuminance can be obtained within an arbitrary and constant irradiation area. Further, since the illumination intensity can be adjusted only by sliding both attenuation blocks relatively, it has various excellent effects such as easy operation, Q5, and easy automation.
第１図および第２図は本発明による照度減衰装置の一実
施例を示す原理図、第３図は本発明による照度減衰装置
の他の実施例を示す原理図、第４図は本発明による照度
減衰装置の一実施例における減衰ブロックを示す斜視図
である。
１・・−・照度減衰装置、１番、１ｂ、１ｅｅｓｏ寺減
衰ブロツク、２・・・・光源、３−・争・対象物、 ３
ａ ・・・・照射部、４・・争・光。
代理人 弁理士 薄 １）オＩＩ 幸／χ１゛−゛・
。
ド：、Ｉ１．１
ｔ″；、ｌ；
”１ 、、ｌ；−・1 and 2 are principle diagrams showing one embodiment of the illumination attenuation device according to the present invention, FIG. 3 is a principle diagram showing another embodiment of the illumination attenuation device according to the present invention, and FIG. 4 is a principle diagram showing an embodiment of the illumination attenuation device according to the present invention. FIG. 3 is a perspective view showing a damping block in an embodiment of the illuminance damping device. 1...Illuminance attenuation device, No. 1, 1b, 1eeso temple attenuation block, 2...Light source, 3--Dispute/object, 3
a...irradiation part, 4...war/light. Agent Patent Attorney Susuki 1) OII Sachi/χ1゛-゛・
. Do:, I1.1 t″;, l; “1,, l;-・
Claims (1)
クを備え、該減衰ブロックは、それぞれその光減衰率が
前記変化の方向に沿って互に逆向きにかつ等しい絶対値
の勾配をもって変化していることを特徴とする照度減衰
装置。A pair of attenuation blocks are provided on opposing surfaces and whose relative positions can be changed, and each of the attenuation blocks has a light attenuation rate that changes along the direction of change in opposite directions and with gradients of equal absolute value. An illumination attenuation device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11215681A JPS5814101A (en) | 1981-07-20 | 1981-07-20 | Illuminance attenuation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11215681A JPS5814101A (en) | 1981-07-20 | 1981-07-20 | Illuminance attenuation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5814101A true JPS5814101A (en) | 1983-01-26 |
Family
ID=14579629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11215681A Pending JPS5814101A (en) | 1981-07-20 | 1981-07-20 | Illuminance attenuation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6239814A (en) * | 1985-08-14 | 1987-02-20 | Sony Corp | Transmission light quantity control device |
-
1981
- 1981-07-20 JP JP11215681A patent/JPS5814101A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6239814A (en) * | 1985-08-14 | 1987-02-20 | Sony Corp | Transmission light quantity control device |
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