JPH0360050B2 - - Google Patents
Info
- Publication number
- JPH0360050B2 JPH0360050B2 JP8204583A JP8204583A JPH0360050B2 JP H0360050 B2 JPH0360050 B2 JP H0360050B2 JP 8204583 A JP8204583 A JP 8204583A JP 8204583 A JP8204583 A JP 8204583A JP H0360050 B2 JPH0360050 B2 JP H0360050B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- wedge
- continuous interference
- filter
- interference filter
- 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.)
- Expired
Links
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 description 17
- 230000035945 sensitivity Effects 0.000 description 15
- 230000003287 optical effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000000007 visual effect Effects 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、照度、輝度等を測定する場合に必要
となる標準比視感度と一致した受光器や、測色に
要するスペクトル三刺激値に一致した分光感度を
持つ色彩計用の受光器等、任意の分光感度を構成
できる受光器に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention provides a light receiver that matches the standard relative luminous efficiency required when measuring illuminance, brightness, etc., and a light receiver that matches the spectral tristimulus values required for colorimetry. The present invention relates to a light receiver that can have any spectral sensitivity, such as a light receiver for a colorimeter that has spectral sensitivity.
従来例の構成とその問題点
従来この種の受光器、たとえば照度計等の分光
感度を比視感度に合わせた受光器を構成する場
合、複数枚の色補正フイルタ等で感度を合わせて
いたが、十分比視感度に近い分光感度を得ること
はきわめてむずかしく、また、この比視感度と受
光器の分光感度とのずれが、複雑な分光分布を持
つ光源の下での照度や輝度の測定値に、大きな誤
差を生じる。Conventional configurations and their problems Conventionally, when configuring this type of photoreceptor, such as an illumination meter, where the spectral sensitivity is matched to the relative luminous efficiency, the sensitivity is matched using multiple color correction filters, etc. It is extremely difficult to obtain a spectral sensitivity that is sufficiently close to the relative luminous efficiency, and the difference between this relative luminous efficiency and the spectral sensitivity of the photoreceiver makes it difficult to obtain measured values of illuminance and brightness under a light source with a complex spectral distribution. This results in a large error.
発明の目的
本発明は、必要とする任意の分光感度を自由に
設定することができる構造の簡単な受光器を提供
することを目的とする。OBJECTS OF THE INVENTION An object of the present invention is to provide a light receiver with a simple structure that allows any desired spectral sensitivity to be freely set.
発明の構成
本発明は、ウエツジ形連続干渉フイルタと、こ
のフイルタ面に垂直に出射する光に対し、その透
過光の波長の位置が一致し、かつ両者のフイルタ
面が平行となるように配置された第２のウエツジ
形連続干渉フイルタと、第１及び第２のウエツジ
形連続干渉フイルタとの間に配置され必要とする
分布が得られる形状の開口を持つ遮光板と、前記
第２のウエツジ形連続干渉フイルタより出射した
光をすべて受光する受光器とを備えた受光器であ
る。Structure of the Invention The present invention includes a wedge-shaped continuous interference filter, and a wedge-shaped continuous interference filter arranged so that the wavelength of the transmitted light coincides with the light emitted perpendicularly to the filter surface, and the filter surfaces of both filters are parallel to each other. a second wedge-shaped continuous interference filter; a light-shielding plate having an aperture shaped to obtain a required distribution and disposed between the first and second wedge-shaped continuous interference filters; and the second wedge-shaped continuous interference filter. The light receiver includes a light receiver that receives all the light emitted from the continuous interference filter.
実施例の説明
本発明の一実施例としてウエツジ形連続干渉フ
イルタ２枚に適当な開口パターンを持つ遮光板を
はさんで密着し、その出射光をすべて受光するよ
うに受光素子と組み合わせ、標準比視感度と同じ
分光感度を持つようにした受光器について説明す
る。DESCRIPTION OF EMBODIMENTS As an embodiment of the present invention, two wedge-type continuous interference filters are closely attached with a light-shielding plate having an appropriate aperture pattern in between, and combined with a light-receiving element to receive all the emitted light. A light receiver having the same spectral sensitivity as the visual sensitivity will be described.
ウエツジ形連続干渉フイルタは、フイルタ面の
場所によつて透過できる光の波長が決定される
が、入射光がフイルタ面の垂直に対してある角度
で入射した場合、垂直に入射した場合に比べて、
干渉層の有効長さが長くなり、透過光の波長のず
れが生ずる。また、第１図に示すように入射光ａ
がある角度を持つた場合、ガラス１と空間、ガラ
ス１と干渉層２との２面での反射光が一次出射光
ｂと重なり、出射光ｂの波長純度が悪くなる。こ
のため、上記ウエツジ形連続干渉フイルタを分光
分散光学系として使用する場合、平行光をフイル
タ面に垂直に入射させなければならない。そこで
第２図に示すように、上記ウエツジ形連続干渉フ
イルタ３及び４の２枚を、その透過光の波長位置
がすべて一致するように、ある距離をおいて配置
するか、あるいは重ね合わせた場合、入射光ａが
平行光でなくともその光の中で前記ウエツジ形連
続干渉フイルタ３の表面に垂直に入射する光成分
のみ、前記第２のウエツジ形連続干渉フイルタ４
の出射光ｂとして他の入射光成分から分離され
る。さらに第３図に示すような適当な開口パター
ン５を持つ遮光板６を、第４図に示すように、前
記２枚のウエツジ形連続干渉フイルタ３及び４の
間に設けることにより、それぞれの光波長に対す
る放射パワーを規正し、前記干渉フイルタ４から
の出射光を、すべて受光素子７に入射させること
により、分光感度を比視感度合わせた受光器が得
られる。また、前記遮光板６の開口パターン５の
形状を変えることにより、受光器の分光感度を任
意に変えることが可能となる。 In a wedge-type continuous interference filter, the wavelength of light that can be transmitted is determined by the location on the filter surface, but if the incident light is incident at a certain angle to the perpendicular to the filter surface, the wavelength will be lower than if the incident light is incident perpendicularly to the filter surface. ,
The effective length of the interference layer increases, causing a shift in the wavelength of transmitted light. Also, as shown in Fig. 1, the incident light a
In the case of a certain angle, the reflected light from the two surfaces of the glass 1 and the space and the glass 1 and the interference layer 2 overlap with the primary emitted light b, and the wavelength purity of the emitted light b deteriorates. Therefore, when the wedge-shaped continuous interference filter is used as a spectral dispersion optical system, parallel light must be made perpendicular to the filter surface. Therefore, as shown in Fig. 2, the two wedge-type continuous interference filters 3 and 4 are placed at a certain distance or placed one on top of the other so that the wavelength positions of their transmitted lights all match. , even if the incident light a is not parallel light, only the light component of that light that is perpendicularly incident on the surface of the wedge-shaped continuous interference filter 3 is transmitted to the second wedge-shaped continuous interference filter 4.
is separated from other incident light components as output light b. Furthermore, by providing a light shielding plate 6 having an appropriate aperture pattern 5 as shown in FIG. 3 between the two wedge-shaped continuous interference filters 3 and 4 as shown in FIG. By regulating the radiation power with respect to the wavelength and allowing all of the light emitted from the interference filter 4 to enter the light receiving element 7, a light receiver whose spectral sensitivity is matched with the relative luminous efficiency can be obtained. Further, by changing the shape of the aperture pattern 5 of the light shielding plate 6, it is possible to arbitrarily change the spectral sensitivity of the light receiver.
発明の効果
以上説明したように、本発明は、ウエツジ形連
続干渉フイルタと適当な開口を持つスクリーンと
を組み合わせて、任意の分光感度を持つ受光器を
実現するものであり、従来行なわれている色フイ
ルタによる受光器の分光感度補正に比べて、スク
リーンの開口の形状を変えるだけで比較的簡単
に、より精度よく、また複雑な分光感度を持つ受
光器を得られるものである。Effects of the Invention As explained above, the present invention combines a wedge-shaped continuous interference filter and a screen with an appropriate aperture to realize a light receiver with arbitrary spectral sensitivity. Compared to correcting the spectral sensitivity of the light receiver using color filters, it is relatively easy to obtain a light receiver with more precise and complex spectral sensitivity just by changing the shape of the screen aperture.
第１図は、ウエツジ形連続干渉フイルタの入出
射光路を示す光路図、第２図は、ウエツジ形連続
干渉フイルタ３及び４を重ねた場合の光路図、第
３図は、前記ウエツジ形連続干渉フイルタ３より
出射した光の分光放射分布を規制するための開口
５を持つ遮光板の斜視図、第４図は、本発明の一
実施例における任意の分光感度を持つ受光器の斜
視図である。
１……ガラス、２……干渉層、３……第１のウ
エツジ形連続干渉フイルタ、４……第２のウエツ
ジ形連続干渉フイルタ、５……開口パターン、６
……遮光板、７……受光素子。
FIG. 1 is an optical path diagram showing the input and output optical paths of the wedge-type continuous interference filter, FIG. 2 is an optical path diagram when wedge-type continuous interference filters 3 and 4 are stacked, and FIG. 3 is an optical path diagram showing the optical path of the wedge-type continuous interference filter. FIG. 4 is a perspective view of a light shielding plate having an aperture 5 for regulating the spectral radiation distribution of light emitted from the filter 3, and FIG. 4 is a perspective view of a light receiver having arbitrary spectral sensitivity in one embodiment of the present invention. . DESCRIPTION OF SYMBOLS 1...Glass, 2...Interference layer, 3...First wedge-shaped continuous interference filter, 4...Second wedge-shaped continuous interference filter, 5...Aperture pattern, 6
... Light shielding plate, 7 ... Light receiving element.
Claims (1)
タ面に垂直に入射した光に対して、その透過光の
波長位置が一致し、かつ両者のフイルタ面が平行
となるように配された第２のウエツジ形連続干渉
フイルタと、第１及び第２のウエツジ形連続干渉
フイルタの間に配置された透過光を空間的に規正
する窓を持つ遮光板と、前記第２のウエツジ形連
続干渉フイルタからの出射光をすべて受光する受
光素子とから成る受光器。1. A wedge-shaped continuous interference filter, and a second wedge-shaped filter arranged so that the wavelength position of the transmitted light coincides with that of the light incident perpendicularly to the filter surface, and both filter surfaces are parallel to each other. a continuous interference filter; a light shielding plate having a window for spatially regulating transmitted light disposed between the first and second wedge-shaped continuous interference filters; and light emitted from the second wedge-shaped continuous interference filter. A light receiver consisting of a light receiving element that receives all of the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204583A JPS59206725A (en) | 1983-05-10 | 1983-05-10 | Photodetector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204583A JPS59206725A (en) | 1983-05-10 | 1983-05-10 | Photodetector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59206725A JPS59206725A (en) | 1984-11-22 |
| JPH0360050B2 true JPH0360050B2 (en) | 1991-09-12 |
Family
ID=13763538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8204583A Granted JPS59206725A (en) | 1983-05-10 | 1983-05-10 | Photodetector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59206725A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03115937A (en) * | 1989-09-29 | 1991-05-16 | Photo Composing Mach Mfg Co Ltd | Photometric method for object to be measured |
| JP2004223437A (en) * | 2003-01-24 | 2004-08-12 | Toppan Printing Co Ltd | Color resist coating unevenness inspection apparatus |
-
1983
- 1983-05-10 JP JP8204583A patent/JPS59206725A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59206725A (en) | 1984-11-22 |
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