JPS6222030A - Photodetection part of illuminance meter - Google Patents
Photodetection part of illuminance meterInfo
- Publication number
- JPS6222030A JPS6222030A JP16272385A JP16272385A JPS6222030A JP S6222030 A JPS6222030 A JP S6222030A JP 16272385 A JP16272385 A JP 16272385A JP 16272385 A JP16272385 A JP 16272385A JP S6222030 A JPS6222030 A JP S6222030A
- Authority
- JP
- Japan
- Prior art keywords
- light
- filter
- filters
- spectral sensitivity
- optical
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 49
- 230000003595 spectral effect Effects 0.000 claims abstract description 39
- 230000035945 sensitivity Effects 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000007423 decrease Effects 0.000 description 6
- 238000005286 illumination Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
-
- 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
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0437—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective 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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0448—Adjustable, e.g. focussing
-
- 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
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0488—Optical or mechanical part supplementary adjustable parts with spectral filtering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、分光感度特性が標準比視感度に精度よく合致
した照度計の受光部に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a light receiving section of an illuminance meter whose spectral sensitivity characteristics match the standard luminous efficiency with high precision.
従来の技術
照度計がもつべき重要な特性は２つあり、１つは受光部
の受光角特性が余弦則に合致していることと、もう１つ
は、分光感度特性が標準比視感度に合致していることで
ある。このうち後者の標準比視感度は第５図のように表
せる。受光部の分光感度が標準比視感度に合致するとい
うことは、受光部に各波長毎の単色光を与えた時の受光
部からの出力が第５図の曲線に沿って変化することをい
う。There are two important characteristics that conventional technology illumination meters should have: one is that the acceptance angle characteristics of the light receiving part match the cosine law, and the other is that the spectral sensitivity characteristics match the standard luminous efficiency. It is consistent. Of these, the latter standard luminous efficiency can be expressed as shown in FIG. The fact that the spectral sensitivity of the light receiving section matches the standard luminous efficiency means that the output from the light receiving section changes along the curve in Figure 5 when monochromatic light of each wavelength is applied to the light receiving section. .
従来の照度計の受光部は、通常第６図に示すように、光
電変換素子１の上方に光電変換素子１と同面積またはそ
れより大きな面積を持つ視感度補正フィルタ２を配置す
ることにより、受光部の分光感度を標準比視感度に合致
させるようにしている。しかし、光電変換素子１の分光
感度や視感度補正フィルタ２の分光透過特性は、必ずし
も一定ではなく、製造ロットの違いによって変化する。As shown in FIG. 6, the light receiving section of a conventional illumination meter usually has a visibility correction filter 2 arranged above the photoelectric conversion element 1 and having an area equal to or larger than the photoelectric conversion element 1. The spectral sensitivity of the light receiving section is made to match the standard luminous efficiency. However, the spectral sensitivity of the photoelectric conversion element 1 and the spectral transmission characteristics of the visibility correction filter 2 are not necessarily constant and change depending on the manufacturing lot.
また、同一ロット内においてもバラツキがある。Furthermore, there are variations even within the same lot.
したがって、ある特定の光電変換素子１と視感度補正フ
ィルタ２とを組み合わせた分光感度が、標準比視感度に
合致しても、別の同種の光電変換素子１と視感度補正フ
ィルタ２とを組み合わせた場合に、その分光感度が標準
比視感度に合致しないことがある。なお、３は照度計受
光部基板、４は光拡散板である。Therefore, even if the spectral sensitivity of the combination of a certain photoelectric conversion element 1 and the visibility correction filter 2 matches the standard luminous efficiency, the combination of another photoelectric conversion element 1 of the same type and the visibility correction filter 2 In some cases, the spectral sensitivity may not match the standard luminous efficiency. In addition, 3 is an illuminance meter light receiving part board, and 4 is a light diffusing plate.
そこで、従来は、同一ロットの充電変換素子１や視感度
補正フィルタ２を複数準備し、すべての光電変換素子１
の分光感度や視感度補正フィルタ２の分光透過率を測定
し、その都度組み合わせを検討することによって、受光
器の分光感度を標準比視ｒ！Ａ度に合致させていた。Therefore, in the past, a plurality of charge conversion elements 1 and visibility correction filters 2 of the same lot were prepared, and all photoelectric conversion elements 1
By measuring the spectral sensitivity of the light receiver and the spectral transmittance of the visibility correction filter 2, and considering the combination each time, the spectral sensitivity of the light receiver can be adjusted to the standard ratio r! It was matched to A degree.
発明が解決しようとする問題点
このような従来の照度計の受光部では、分光感度の微調
整が困難なために、光電変換素子１や視感度補正フィル
タ２の製造ロフトの違いや、同一ロット内のバラツキの
ために、その受光部の分光感度が標準比視感度に合致し
ない場合もあり、その照度値の信頼性に問題が生じてく
る。Problems to be Solved by the Invention In the light receiving section of such a conventional illumination meter, it is difficult to finely adjust the spectral sensitivity. Due to variations in the luminous intensity, the spectral sensitivity of the light receiving section may not match the standard luminous efficiency, which poses a problem in the reliability of the illuminance value.
本発明は上記従来の問題点を解消するもので、分光感度
の微調整が可能で、標準比視感度に精度良く合致させる
ことのできる照度計の受光部を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a light receiving section of an illuminance meter that allows fine adjustment of spectral sensitivity and allows for accurate matching with standard luminous efficiency.
問題点を解決するための手段
上記問題点を解決するため、本発明の照度計の受光部は
、１つの光電変換素子と、この光電変換素子の上方に規
則性を持たせて配置された分光透過特性の異なる３種類
の光学フィルタからなる視感度補正フィルタと、遮光部
および光が通過する開口部の面積が互いに異なりかつ同
心円状に配置された２種類の光制御フィルタとを備え、
前記２種類の光制御フィルタのうち一方の光制御フィル
タを回転させることによって受光部の分光感度の長波長
域の光量と短波長域の光量とのバランスが変化し、他方
の光制御フィルタを回転させることによ・て受光部の分
光感度の長波長域と短波長域 「どの光量が均
等に変化する構成としたものである。Means for Solving the Problems In order to solve the above problems, the light receiving section of the illumination meter of the present invention includes one photoelectric conversion element and a spectrometer arranged regularly above the photoelectric conversion element. Equipped with a visibility correction filter consisting of three types of optical filters with different transmission characteristics, and two types of light control filters in which the areas of the light shielding part and the opening through which light passes are different from each other and are arranged concentrically,
By rotating one of the two types of light control filters, the balance between the amount of light in the long wavelength region and the amount of light in the short wavelength region of the spectral sensitivity of the light receiving section changes, and the other light control filter is rotated. By changing the spectral sensitivity of the light-receiving section, the spectral sensitivity of the long-wavelength region and the short-wavelength region.
作用
上記構成によれば、２種類の光制御フィルタによって視
感度補正フィルタを構成する３種類の光学フィルタの面
積比を任意に変えることができ、この結果、受光部の分
光感度の微調整が可能となり、光電変換素子の分光感度
および視感度補正フィルタの分光透過特性のバラツキに
よって生じる受光部の分光感度のバラツキを微細に補正
することができる。Effect: According to the above configuration, the area ratio of the three types of optical filters that make up the visibility correction filter can be arbitrarily changed using the two types of light control filters, and as a result, the spectral sensitivity of the light receiving section can be finely adjusted. Therefore, variations in the spectral sensitivity of the light receiving section caused by variations in the spectral sensitivity of the photoelectric conversion element and the spectral transmission characteristics of the visibility correction filter can be finely corrected.
実施例
以下、本発明の一実施例を第１図〜第４図に基づいて説
明する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.
第１図は本発明の一実施例における照度計の受光部の分
解斜視図で、１１．１２は光制御フィルタ、１３は視感
度補正フィルタ、１４は充電変換素子、１５は光制御フ
ィルタ１２を固定する光透過板である。FIG. 1 is an exploded perspective view of the light receiving part of the illumination meter in an embodiment of the present invention, in which 11.12 is a light control filter, 13 is a visibility correction filter, 14 is a charging conversion element, and 15 is a light control filter 12. This is a light transmitting plate that is fixed.
視感度補正フィルタ１３は、第１図に示すように、３種
類の光学フィルタ１３ａ〜１３Ｃおよび１３ｄ〜１３ｆ
を規則性を持たせて設置している。なお、この実施例で
は、説明を容易にするために、各光学フィルタ１３ａ〜
１３ｃおよび１３ｄ〜１３ｆの面積を均等に分割してい
るが、実際には光電変換素子１４と視感度補正フィルタ
１３とを組み合わせた時の分光感度が標準比視感度に近
以できる面積比とする必要がある。また、光制御フィル
タ１１は、第１図に示すように、光制御フィルタ１１を
時計回りおよび反時計回りに回転させることにより、光
学フィルタ１３ａ〜１３Ｃの透過光を均等に変化（光学
フィルタ１３ｂの光量は、光学フィルタ１３ａ、１３ｃ
の光量が増加する時に減少し、光学フィルタ１３ａ、１
３ｃの光量が減少する時に増加する）させるような遮光
部１１ａ及び開口部１１ｂの形状および配列としている
。As shown in FIG. 1, the visibility correction filter 13 includes three types of optical filters 13a to 13C and 13d to 13f.
are set up with regularity. Note that in this embodiment, for ease of explanation, each optical filter 13a to
Although the areas of 13c and 13d to 13f are divided equally, in reality, the area ratio is such that the spectral sensitivity when the photoelectric conversion element 14 and the visibility correction filter 13 are combined is close to the standard luminosity. There is a need. Further, as shown in FIG. 1, the light control filter 11 uniformly changes the transmitted light of the optical filters 13a to 13C (the light of the optical filter 13b) by rotating the light control filter 11 clockwise and counterclockwise. The amount of light is determined by the optical filters 13a and 13c.
decreases when the light amount increases, and the optical filters 13a, 1
The shape and arrangement of the light shielding portion 11a and the opening portion 11b are such that the light amount increases when the light amount of the light source 3c decreases.
光制御フィルタ１２は、光制御フィルタ１２を時計回り
および反時計回りに回転させることにより、光学フィル
タ１３ｅからの光量は変化せずに、光学フィルタ１３ｄ
、 １３ｆからの光量のみ変化するような遮光部１２ａ
−及び開口部１２ｂの形状および配列としている。光制
御フィルタ１２を固定する光透過板１５は、透過率が高
く、波長依存性のないものである。なお、視感度補正フ
ィルタ１３の光学フィルタ１３ａ〜１３ｃを内周側に配
置し、光学フィルタ１３ｄ〜１３ｆを外周側に配置して
もよい。この場合、光学制御フィルタ１１を小径の円形
に、また光学１１ｊｌＪ１１］フイルタ１２を大径の環
状にすることは勿論である。また、光制御フィルタ １
１．１２は、それぞれ独立して回転できる構造としてい
る。The light control filter 12 rotates the light control filter 12 clockwise and counterclockwise, so that the amount of light from the optical filter 13e does not change, and the amount of light from the optical filter 13d remains unchanged.
, a light shielding part 12a in which only the amount of light from 13f changes.
- and the shape and arrangement of the openings 12b. The light transmitting plate 15 that fixes the light control filter 12 has high transmittance and is not wavelength dependent. Note that the optical filters 13a to 13c of the visibility correction filter 13 may be arranged on the inner circumferential side, and the optical filters 13d to 13f may be arranged on the outer circumferential side. In this case, it goes without saying that the optical control filter 11 has a circular shape with a small diameter, and the optical control filter 12 has a circular shape with a large diameter. In addition, light control filter 1
1.12 has a structure that allows each to rotate independently.
第２図は、視感度補正フィルタ１３の同種類の光学フィ
ルタ、すなわち光学フィルタ１３ａ、１３ｄ 、光学フ
ィルタ１３ｂ、１３ｅ 、光学フィルタ１３ｃ、１３ｆ
のいずれかのみに同等の光を照射した場合の受光部分光
感度を示しており、曲線（ａ）は光学フィルタ１３ａ、
１３ｄのみに光を照射した場合、曲ａ（ｂ）は光学フィ
ルタ１３ｂ、 １３ｅのみに光を照射した場合、曲線（
Ｃ）は光学フィルタ１３ｃ、１３ｆのみに光を照射した
場合の分光感度特性曲線である。また、曲線（ｄ）は、
前記特性曲線の曲線（ａ）（ｂ）（Ｃ）を加算したもの
であり、受光部の分光ＷＡ度時特性示している。FIG. 2 shows optical filters of the same type as the visibility correction filter 13, namely optical filters 13a, 13d, optical filters 13b, 13e, and optical filters 13c, 13f.
The curve (a) shows the light receiving sensitivity when equivalent light is irradiated only on either of the optical filters 13a and 13a.
When only the optical filters 13b and 13e are irradiated with light, the curve a(b) becomes the curve (
C) is a spectral sensitivity characteristic curve when only the optical filters 13c and 13f are irradiated with light. Also, the curve (d) is
It is the sum of curves (a), (b), and (C) of the above characteristic curves, and shows the spectral WA degree-time characteristics of the light receiving section.
第３図は上記照度計の受光部の動作原理を示すものであ
り、第３図（Ａ）において、光制御フィルタ１１を矢印
六方向に移動させた場合、光学フィルタ１３ａ、 １３
ｃの透過光量が増加するとともに、光学フィルタ１３ｂ
の透過光量が減少し、矢印Ｂ方向に移動させた場合、光
学フィルタ１３ａ、１３ｃの透過光量が減少するととも
に、光学フィルタ１３ｂの透過光量が増加する。また第
３図（Ｂ）において、光制御フィルタ１２を矢印六方向
に移動させた場合、光学フィルタ１３ｄの透過光量が増
加するとともに、光学フィルタ１３ｆの透過光量が減少
し、矢印Ｂ方向に移動させた場合、光学フィルタ１３ｄ
の透過光量が減少するとともに、光学フィルタ１３ｆの
透過光量が増加する。なお、この時の光学フィルタ１３
ｅの透過光量は変化しない。ただし、上記現象は、遮光
部（開孔部でも同様）が第３図（Ａ＞（８）で示したよ
うな隣接する２つの光学フィルタ上にある場合のみであ
り、移動することによって遮光部が次の隣接する光学フ
ィルタ上に位置した場合には、逆の現象を生じることに
なる。FIG. 3 shows the operating principle of the light receiving section of the illumination meter. In FIG. 3(A), when the light control filter 11 is moved in the six directions of the arrows, the optical filters 13a, 13
As the amount of transmitted light of optical filter 13b increases,
When moving in the direction of arrow B, the amount of transmitted light through the optical filters 13a and 13c decreases, and the amount of transmitted light through the optical filter 13b increases. Further, in FIG. 3(B), when the light control filter 12 is moved in the six directions of arrow B, the amount of light transmitted through the optical filter 13d increases, and the amount of light transmitted through the optical filter 13f decreases, and when the light control filter 12 is moved in the direction of arrow B, the amount of light transmitted through the optical filter 13d increases. In this case, the optical filter 13d
The amount of light transmitted through the optical filter 13f decreases, and the amount of light transmitted through the optical filter 13f increases. Note that the optical filter 13 at this time
The amount of transmitted light of e does not change. However, the above phenomenon occurs only when the light shielding part (the same applies to the aperture part) is located on two adjacent optical filters as shown in FIG. 3 (A>(8)); is located on the next adjacent optical filter, the opposite phenomenon will occur.
第４図は・光電変換素子１４と視感度補正フィルタ
。Figure 4 shows the photoelectric conversion element 14 and the visibility correction filter.
.
り１３とを組み合わせた場合の分光感度Ｓ（λ）が標準
比視感度Ｖ（λ）からはずれる形態を示したものであり
、第４図（Ａ）のように標準比視感度■（λ）に比べて
短波長域・長波長域とも感度が高い場合と、第４図（Ｂ
）のように短波長域・長波長域とも感度が低い場合と、
第４図（Ｃ）のように分光感度Ｓ（λ）が全体的に短波
長側にシフトしている場合と、第４図（Ｄ）のように全
体的に長波長側にシフトしている場合との４つに分類す
ることができる。This figure shows a form in which the spectral sensitivity S (λ) deviates from the standard luminous efficiency V (λ) when combined with Figure 4 (B
), where the sensitivity is low in both the short and long wavelength ranges, and
There are cases where the spectral sensitivity S(λ) is shifted entirely towards shorter wavelengths as shown in Figure 4(C), and cases where the spectral sensitivity S(λ) is shifted entirely towards longer wavelengths as shown in Figure 4(D). It can be classified into four types: cases.
次に、受光部の分光感度を標準比視感度に合致させる方
法を第４図を用いて説明する。受光部の分光感度が第４
図（Ａ）で示す形態にある場合は、光学フィルタ１３ａ
、１３ｃの透過光量を減少させるか、あるいは、光学フ
ィルタ１３ｂの透過光量を増加させればよいことになり
、第３図（Ａ＞において、光制御フィルタ１１を矢印Ｂ
方向に移動させればよく、また第４図（Ｂ）の形態にあ
る場合は、光学フィルタ１３ａ、１３ｃの透過光量を増
加させるか、あるいは光学フィルタ１３ｂの透過光量を
減少させればよいことになり、第３図（Ａ＞において、
光制御フィルタ１１を矢印六方向に移動させればよい。Next, a method for matching the spectral sensitivity of the light receiving section to the standard luminous efficiency will be explained using FIG. 4. The spectral sensitivity of the light receiving part is 4th
In the case of the form shown in Figure (A), the optical filter 13a
, 13c, or increase the amount of transmitted light through the optical filter 13b. In FIG.
In the case of the configuration shown in FIG. 4(B), the amount of light transmitted through the optical filters 13a and 13c may be increased, or the amount of light transmitted through the optical filter 13b may be decreased. In Fig. 3 (A>),
The light control filter 11 may be moved in the six directions indicated by the arrows.
この時、第３図（Ｂ）の光制御フィルタ１２は固定して
おく。また第４図（Ａ）（Ｂ）の形態において、標準比
視感度からのはずれが短波長域よりも長波長域のほうが
大きい場合は、短波長域と長波長域とのはずれを均等に
したのち、上記の操作を行なう。また受光部の分光感度
が第４図（Ｃ）の形態にある場合は、光学フィルタ１３
ｄを増加させ、光学フィルタ１３ｆを減少させればよい
ことになり、第３図（Ｂ）において、光制御フィルタ１
２を矢印六方向に移動させればよく、第４図（Ｄ）の形
態にある場合は、光学フィルタ１３ｄを減少させ、光学
フィルタ１３ｆを増加させればよいことになり、第３図
（Ｂ）の構成において、光制御フィルタ１２を矢印Ｂ方
向に移動させればよい。なお、この時、第３図（Ａ）の
光制御フィルタ１１は固定しておく。At this time, the light control filter 12 shown in FIG. 3(B) is fixed. In addition, in the configurations shown in Fig. 4 (A) and (B), if the deviation from the standard luminous efficiency is larger in the long wavelength range than in the short wavelength range, the deviation between the short wavelength range and the long wavelength range is equalized. Afterwards, perform the above operations. In addition, when the spectral sensitivity of the light receiving section is in the form shown in FIG. 4(C), the optical filter 13
d and decrease the optical filter 13f. In FIG. 3(B), the light control filter 1
2 in the six directions of the arrows, and in the case of the form shown in FIG. 4(D), it is sufficient to reduce the optical filter 13d and increase the optical filter 13f. ), the light control filter 12 may be moved in the direction of arrow B. Note that at this time, the light control filter 11 shown in FIG. 3(A) is kept fixed.
また、上記操作で標準比視感度に合致しない場合には、
まず上記操作で短波長域と長波長域との標準比視感度か
らのはずれが均等になるような光制御フィルタ１２の位
置を設定し、第４図（Ａ＞（Ｂ）の形態の場合の操作を
行なえば良いことになり、受光部の分光感度の標準比視
感度からのはずれを補正することができる。In addition, if the above operation does not match the standard luminous efficiency,
First, by the above operation, set the position of the light control filter 12 such that the deviation from the standard luminous efficiency in the short wavelength region and the long wavelength region is equal, and then This means that the deviation of the spectral sensitivity of the light receiving section from the standard luminous efficiency can be corrected by simply performing the operation.
発明の効果
以上述べたごとく本発明によれば、視感度補正フィルタ
を３種類の光学フィルタで構成し、この視感度補正フィ
ルタからの透過光量を個別に制御できる２種類の光制御
フィルタと組み合わせているため、受光部の分光感度を
微細に調整することができ、したがって容易に標準比視
感度に合致させることができる。Effects of the Invention As described above, according to the present invention, the visibility correction filter is composed of three types of optical filters, and is combined with two types of light control filters that can individually control the amount of transmitted light from the visibility correction filter. Therefore, the spectral sensitivity of the light receiving section can be finely adjusted, and therefore it can be easily made to match the standard luminous efficiency.
第１図は本発明の一実施例における照度計の受光部の分
解斜視図、第２図は同受光部において各光学フィルタの
みに光を照射した時の受光部の分光感度特性の説明図、
第３図は同受光部の動作原理の説明図、第４図は受光部
の分光感度が標準比視感度からはずれる場合の形態の説
明図、第５図は標準比視感度特性の説明図、第６図は従
来の照度計の受光部の断面図である。
１１、１２・・・光制御フィルタ、Ｉｌａ、１２ａ・・
・遮光部、１１ｂ、１２ｂ・・・開口部、１３・・・視
感度補正フィルタ、１３ａ〜１３ｆ・・・光学フィルタ
、１４川光電変換素子代理人 森 本 義
弘
第１図
第２図
第３図
６４ン
Ａ□ β
／Ｊ＃ １３４ ／ｊ
Ｃむ司ノ
４□
□β第４図FIG. 1 is an exploded perspective view of a light receiving section of an illuminometer according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the spectral sensitivity characteristics of the light receiving section when only each optical filter is irradiated with light in the same light receiving section.
Fig. 3 is an explanatory diagram of the operating principle of the light receiving section, Fig. 4 is an explanatory diagram of the form when the spectral sensitivity of the light receiving section deviates from the standard luminous efficiency, and Fig. 5 is an explanatory diagram of the standard luminous efficiency characteristics. FIG. 6 is a sectional view of a light receiving section of a conventional illuminance meter. 11, 12...light control filter, Ila, 12a...
- Light shielding part, 11b, 12b... opening, 13... visibility correction filter, 13a to 13f... optical filter, 14kawa photoelectric conversion element agent Yoshi Morimoto
Figure 1 Figure 2 Figure 3 64 A□ β /J# 134 /j
C Mujino 4□
□βFigure 4
Claims (1)
規則性を持たせて配置された分光透過特性の異なる３種
類の光学フィルタからなる視感度補正フィルタと、遮光
部および光が通過する開口部の面積が互いに異なりかつ
同心円状に配置された２種類の光制御フィルタとを備え
、前記２種類の光制御フィルタのうち一方の光制御フィ
ルタを回転させることによって受光部の分光感度の長波
長域の光量と短波長域の光量とのバランスが変化し、他
方の光制御フィルタを回転させることによって受光部の
分光感度の長波長域と短波長域との光量が均等に変化す
る構成とした照度計の受光部。1. One photoelectric conversion element, a visibility correction filter consisting of three types of optical filters with different spectral transmission characteristics arranged regularly above the photoelectric conversion element, a light shielding part, and a part through which light passes. It is equipped with two types of light control filters having different opening areas and arranged concentrically, and by rotating one of the two types of light control filters, the spectral sensitivity of the light receiving section can be adjusted. The balance between the amount of light in the wavelength region and the amount of light in the short wavelength region changes, and by rotating the other light control filter, the amount of light in the long wavelength region and the short wavelength region of the spectral sensitivity of the light receiving section changes equally. The light receiving part of the illuminance meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16272385A JPS6222030A (en) | 1985-07-22 | 1985-07-22 | Photodetection part of illuminance meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16272385A JPS6222030A (en) | 1985-07-22 | 1985-07-22 | Photodetection part of illuminance meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6222030A true JPS6222030A (en) | 1987-01-30 |
| JPH052174B2 JPH052174B2 (en) | 1993-01-11 |
Family
ID=15760049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16272385A Granted JPS6222030A (en) | 1985-07-22 | 1985-07-22 | Photodetection part of illuminance meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6222030A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07121094A (en) * | 1993-10-26 | 1995-05-12 | Honda Motor Co Ltd | Vehicle kind changeover simulator |
-
1985
- 1985-07-22 JP JP16272385A patent/JPS6222030A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052174B2 (en) | 1993-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04113235A (en) | Photosensor | |
| CN102435311A (en) | Optical fiber bundle spectrometer | |
| CN104729708B (en) | Anastigmatic broadband spectrum detection grating spectrometer | |
| CN202255624U (en) | Optical fiber bundle spectrometer | |
| JPS6021782Y2 (en) | Colorimeter with filter mirror | |
| JP2000258246A (en) | Total luminous flux measuring method and device | |
| JPS6222030A (en) | Photodetection part of illuminance meter | |
| Gray | Measurement of line profiles | |
| Harnly | The effect of spectral bandpass on signal-to-noise ratios for continuum source atomic absorption spectrometry with a linear photodiode array detector | |
| JPH1078353A (en) | Spectroscope and manufacture of dichroic mirror array of spectroscope | |
| JPS6222032A (en) | Photodetection part of illuminance meter | |
| JPH0684908B2 (en) | Illuminometer receiver | |
| Normand et al. | Notes on the design, adjustment and calibration of spectrophotometers | |
| JPS6222031A (en) | Photodetection part of illuminance meter | |
| JPS61266925A (en) | Double luminous flux measurement system using photoelectric converting element array | |
| JP4542648B2 (en) | Photometric device | |
| JPS63154920A (en) | Light receiving part of illuminometer | |
| JPH0360050B2 (en) | ||
| Hodge | Surface photometry of bright members of the Fornax Cluster of galaxies | |
| JPH04252924A (en) | Spectrometry | |
| JPH07146174A (en) | Photometer | |
| JPH1062247A (en) | Spectroscope | |
| JPH07294328A (en) | Photometry device | |
| JPS5670431A (en) | Photometer | |
| JPH0455725A (en) | Irradiance meter obeying cosine rule |