JPS63191033A - Light receiving section for illumination meter - Google Patents
Light receiving section for illumination meterInfo
- Publication number
- JPS63191033A JPS63191033A JP2272687A JP2272687A JPS63191033A JP S63191033 A JPS63191033 A JP S63191033A JP 2272687 A JP2272687 A JP 2272687A JP 2272687 A JP2272687 A JP 2272687A JP S63191033 A JPS63191033 A JP S63191033A
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving section
- light receiving
- support plate
- sensitivity
- 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
- 238000005286 illumination Methods 0.000 title description 7
- 230000003595 spectral effect Effects 0.000 claims abstract description 45
- 230000035945 sensitivity Effects 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000010586 diagram Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000005516 engineering process 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
- G01J1/0411—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
-
- 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
- G01J1/06—Restricting the angle of incident light
-
- 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、分光感度が正確に標準化視感度に合致した受
光部をもつ照度計に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a luminometer having a light receiving part whose spectral sensitivity accurately matches the standardized luminous sensitivity.
従来の技術
照度計がもつべき重要な特性は２つあり、１つは分光感
度が標準化視感度に合致していること、もう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である。こ
のうち前者の標準化視感度は第６図のように表わせる。There are two important characteristics that conventional technology illumination meters should have: one is that the spectral sensitivity matches the standardized luminous sensitivity, and the other is that the acceptance angle characteristics of the light receiving part match the cosine law. That's true. Among these, the standardized visibility of the former can be expressed as shown in FIG.
照度計の受光部は、通常第７図に示すように光電変換素
子１１の上方に光電変換素子１１と同面積または前記光
電変換素子１１より大きな面積をもつ視感度補正フィル
タ１０ｔ′配置することにより、受光部の分光感度を標
準化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１１の分光感度や視感度補正フィルタ１０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。また、同一ロット内においてもバ
ラツキがある。したがって、ある特定の光電変換素子と
視感度補正フィルタとを組合せた分光感度が、標準化視
感度に合致しても、別の同種の光電変換素子と視感度補
正フィルタとを組合せた場合に、その分光感度が標準化
視感度に合致しないことがある。The light receiving section of the illumination meter is usually constructed by disposing a visibility correction filter 10t' having the same area as the photoelectric conversion element 11 or a larger area than the photoelectric conversion element 11 above the photoelectric conversion element 11, as shown in FIG. , the spectral sensitivity of the light receiving section is made to match the standardized visual sensitivity. However, the spectral sensitivity of the photoelectric conversion element 11 and the spectral transmission characteristics of the visibility correction filter 10 are not necessarily constant and change depending on the manufacturing lot. Furthermore, there are variations even within the same lot. Therefore, even if the spectral sensitivity of a combination of a certain photoelectric conversion element and a visibility correction filter matches the standardized visibility, the spectral sensitivity of a combination of a photoelectric conversion element of the same type and a visibility correction filter will be different. The spectral sensitivity may not match the standardized visual sensitivity.
そこで、従来は同一ロットの光電変換素子や視感度補正
フィルタを複数準備し、すべての光電変換素子の分光Ｅ
６度や視感度補正フィルタの分光透過率を測定し、その
都度組合せを検討することによって、受光器の分光感度
を標準化視感度に近似させていた。このため部分的な波
長域における分光感度の修正ができず、標準化視感度に
完全に合致させることができなかった。Therefore, in the past, multiple photoelectric conversion elements and visibility correction filters from the same lot were prepared, and the spectral E of all photoelectric conversion elements was
The spectral sensitivity of the light receiver was approximated to the standardized visibility by measuring the 6 degrees and the spectral transmittance of the visibility correction filter and examining the combination each time. For this reason, it was not possible to correct the spectral sensitivity in a partial wavelength range, and it was not possible to completely match the standardized visual sensitivity.
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、光電変換素子や視感度補正フィルタの
製造ロットの違いや、同一ロット内のバラツキのために
、受光部の分光感度が標準化視感度にすべて精度よく合
致しないという問題点が生ずる。Problems to be Solved by the Invention In such a conventional illuminance meter light receiving section, fine adjustment of spectral sensitivity is difficult, so differences in manufacturing lots of photoelectric conversion elements and visibility correction filters, and variations within the same lot. Therefore, a problem arises in that the spectral sensitivities of the light receiving sections do not all precisely match the standardized luminous sensitivity.
問題点を解決するための手段
本発明は上記問題点を解決するために、斜め入射角特性
補正用光拡散板と、光電変換素子と、前記素子の上に配
置し光が通過するための複数の円柱状の開口部をもつ支
持板と、前記支持板の開口部と同じ直径を持ち、分光透
過特性の異なる数種類の棒状の干渉フィルタによって構
成された視感度補正フィルタと、前記干渉フィルタの上
部に位置し、前記支持板の開口部と同じ直径を持つ棒状
の１７４ピッチ長の屈折率分布型レンズと、前記屈折立
分布型レンズへの入射光を制御するための複数のアパー
チャを持つ入射光制御板とから構成することにより、受
光部の分光感度が標準化視感度に精度よく合致するよう
に補正しようとするものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a light diffusing plate for correcting oblique incident angle characteristics, a photoelectric conversion element, and a plurality of light diffusers disposed on the element for light to pass through. a support plate having a cylindrical opening; a visibility correction filter composed of several types of rod-shaped interference filters having the same diameter as the opening of the support plate and having different spectral transmission characteristics; and an upper part of the interference filter. a rod-shaped gradient index lens with a pitch length of 174 and having the same diameter as the opening of the support plate, and a plurality of apertures for controlling the incident light to the gradient gradient lens. By comprising a control board, the spectral sensitivity of the light receiving section is corrected so as to accurately match the standardized luminous sensitivity.
作用
本発明は、照度計受光部を上記のような構成とすること
によって、分光透過特性の異なる数種類の棒状の干渉フ
ィルタの構成割合を任意に変えることができる。Effects In the present invention, by configuring the illumination meter light receiving section as described above, the composition ratio of several types of rod-shaped interference filters having different spectral transmission characteristics can be arbitrarily changed.
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器の分光感度の
バラツキを補正することができる。As a result, the spectral sensitivity of the light receiving section can be finely adjusted, and variations in the spectral sensitivity of the light receiver caused by variations in the spectral sensitivity of the photoelectric conversion element and the spectral transmission characteristics of the visibility correction filter can be corrected.
実施例
第１図は、本発明の実施例における光電変換素子、分光
透過特性の異なる数種類の搾試の干渉フィルタによって
構成された視感度補正フィルタ、干渉フィルタへの入射
光の入射角度を補正する屈折率分布型レンズ、屈折率分
布型レンズへの入射光を制御する複数のアパーチャを持
つ入射光制御板、屈折率分布型レンズおよび干渉フィル
タを固定する支持板の構成の一例を示すものであり、１
は光拡散板、２は、入射光制御板、３は屈折率分布型レ
ンズ、４は視感度補正フィルタ、５は干渉フィルタ、６
は支持板、７は光電変換素子である。Embodiment FIG. 1 shows a photoelectric conversion element according to an embodiment of the present invention, a visibility correction filter composed of several types of interference filters with different spectral transmission characteristics, and a visibility correction filter that corrects the incident angle of light incident on the interference filter. This figure shows an example of the configuration of a gradient index lens, an incident light control plate having multiple apertures for controlling incident light to the gradient index lens, and a support plate for fixing the gradient index lens and interference filter. ,1
1 is a light diffusion plate, 2 is an incident light control plate, 3 is a gradient index lens, 4 is a visibility correction filter, 5 is an interference filter, 6
7 is a support plate, and 7 is a photoelectric conversion element.
第２図は、本実施例に使用した視感度補正フィルタ４を
構成する分光透過特性の異なる数種類の干渉フィルタ５
の各々の分光透過特性！ａ−ｇ（本実施例では７種類と
する）と、この分光透過第３図は、本実施例に使用した
光電変換素子７の分光感度曲線Ｉを示す図である。FIG. 2 shows several types of interference filters 5 with different spectral transmission characteristics constituting the visibility correction filter 4 used in this example.
Spectral transmission characteristics of each! a to g (seven types in this example) and the spectral transmission diagram 3 are diagrams showing the spectral sensitivity curve I of the photoelectric conversion element 7 used in this example.
第４図は、光電変換素子７と視感度補正フィルタ４を組
合せた場合の分光感度Ｓ（＾）が標準化視感度Ｖ（λ）
からはずれる形態を示したものであり、糎準比視感度■
（入）にくらべて短波長域、長波長域とも感度が高い場
合（第４図（ａ））、短波長域、長波長域とも感度がひ
くい場合（第４図（ｂ））、および分光感度が全体的に
短波長側にシフトしている場合（第４図（Ｃ））、全体
的に長波長側にシフトしている場合（第４図（ｄ））、
の４つに分類することができる。FIG. 4 shows that the spectral sensitivity S(^) when the photoelectric conversion element 7 and the visibility correction filter 4 are combined is the standardized visibility V(λ).
This shows the form that deviates from the standard luminous efficiency■
When the sensitivity is high in both the short wavelength region and the long wavelength region (Fig. 4 (a)), when the sensitivity is low in both the short wavelength region and the long wavelength region (Fig. 4 (b)), and when the spectral When the sensitivity is entirely shifted to the short wavelength side (Fig. 4 (C)), when the sensitivity is entirely shifted to the long wavelength side (Fig. 4 (d)),
It can be classified into four types.
本実施例において、光電変換素子７と視感度補正フィル
タ４の組合せにより実現した分光感度が第４図（ａ）の
形態である場合は、■（λ）のピーク波長の両側にピー
ク波長をもつ干渉フィルタ５が、全体の面積のなかで占
める割合を減らすが、またはＶ（λ）のピーク波長付近
にピーク波長をもつ干渉フィルタ５の割合を増やせばよ
い。また第４図（ｂ）の形態である場合は、第４図（ａ
）の場合とは逆に、Ｖ（λ）のピーク波長の両側にピー
ク波長をもつ干渉フィルタ５の割合をふやすか、または
Ｖ（λ）のピーク波長付近にピーク波長をもつ干渉フィ
ルタ５の割合を減らせばよい。また、第４図（Ｃ）、（
ｄ）のように、短波長側または長波長側のどちらか一方
にシフトしている場合は、光電変換素子７と視感度補正
フィルタ４の組合せによって実現した分光感度Ｓ（λ）
が標準化視感度Ｖ（λ）より感度の足りない部分にピー
ク波長をもつ干渉フィルタ５の割合を増やすか、または
光電変換素子７と視感度補正フィルタ４の組合せによっ
て実現した分光感度Ｓ（λ）が標準化視感度Ｖ（λ）よ
り感度の多い部分にピーク波長をもつ干渉フィルタ５の
割合を減らすことによって分光感度の微調整が行なえる
ものである。In this example, if the spectral sensitivity realized by the combination of the photoelectric conversion element 7 and the visibility correction filter 4 is in the form shown in FIG. The proportion of the interference filter 5 in the total area may be reduced, or the proportion of the interference filter 5 having a peak wavelength near the peak wavelength of V(λ) may be increased. In addition, in the case of the form shown in Fig. 4(b), Fig. 4(a)
), the proportion of interference filters 5 having peak wavelengths on both sides of the peak wavelength of V(λ) is increased, or the proportion of interference filters 5 having peak wavelengths near the peak wavelength of V(λ) is increased. All you have to do is reduce it. Also, Fig. 4 (C), (
If the spectral sensitivity is shifted to either the short wavelength side or the long wavelength side as in d), the spectral sensitivity S(λ) realized by the combination of the photoelectric conversion element 7 and the visibility correction filter 4
is the spectral sensitivity S(λ) achieved by increasing the proportion of the interference filter 5 that has a peak wavelength in an area where the sensitivity is insufficient than the standardized visibility V(λ), or by combining the photoelectric conversion element 7 and the visibility correction filter 4. The spectral sensitivity can be finely adjusted by reducing the proportion of the interference filters 5 having a peak wavelength in a portion where the sensitivity is higher than the standardized luminous efficiency V(λ).
このとき、干渉フィルタ５に入射する光が干渉５フイル
タの面に直角でない場合は、干渉フィルタ５の分光透過
特性が直角に入射した場合に比べ）変化する。すなわち
、最大透過波長がシフトすには、入射光は入射面に対し
て直角に入射することが必要である。この干渉フィルタ
５への入射光をすべて平行光にするために、１／４ピッ
チ長の屈折率分布型レンズ３を使用する。At this time, if the light incident on the interference filter 5 is not perpendicular to the surface of the interference filter 5, the spectral transmission characteristics of the interference filter 5 change (compared to when the light is incident at right angles). That is, in order for the maximum transmission wavelength to shift, the incident light must be incident at right angles to the plane of incidence. In order to make all of the light incident on the interference filter 5 parallel, a gradient index lens 3 with a quarter pitch length is used.
第５図は、光拡散板１を透過した光が光電変換素子７に
入射するまでの光の流れを示すものである。第５図にお
いて、入射光制御板２は屈折率分布型レンズ３の中心に
アパーチャをもつものである。屈折率分布型レンズ３に
入射した光は蛇行しながら進行する。このとき屈折率分
布型レンズ３は１／４ピッチ長であることから出射面で
はすべて平行光となる。そこで干渉フィルタ５への入射
光はすべて平行光となる。このことによって、干渉フィ
ルタ５は第２図ａ −ｇに示すような特性を示すことが
できる。FIG. 5 shows the flow of light that passes through the light diffusing plate 1 until it enters the photoelectric conversion element 7. In FIG. 5, the incident light control plate 2 has an aperture at the center of a gradient index lens 3. In FIG. The light incident on the gradient index lens 3 travels in a meandering manner. At this time, since the refractive index gradient lens 3 has a 1/4 pitch length, all light becomes parallel at the exit surface. Therefore, all of the light incident on the interference filter 5 becomes parallel light. This allows the interference filter 5 to exhibit characteristics as shown in FIGS. 2a-g.
発明の効果
本発明による照度計受光部は、入射光制御板と屈折率分
布型レンズによって干渉フィルタへの入射光を平行光の
みとし、この分光透過特性の異なる数種類の干渉フィル
タを組合せて視感度補正フィルタを構成し、視感度補正
フィルタの全体の面積のなかで、各々の干渉フィルタが
占める面積の割合を変化させることにより、受光部の分
光感度の微調整を行なうことができ、簡単な構造で、高
精度かつ容易に標準化視感度に合致させることができる
。Effects of the Invention The light receiving section of the illumination meter according to the present invention uses an incident light control plate and a gradient index lens to make the incident light to the interference filter only parallel light, and combines several types of interference filters with different spectral transmission characteristics to improve the visibility. By configuring the correction filter and changing the proportion of the area occupied by each interference filter in the entire area of the visibility correction filter, the spectral sensitivity of the light receiving section can be finely adjusted, and the structure is simple. Therefore, it is possible to easily match the standardized visibility with high accuracy.
ｉｎ１図は本発明の一実施例における照度計受光部の分
解斜視図、第２図は同実施例において使用した視感度補
正フィルタを構成する干渉フィルタを用いたときの分光
透過率曲線および干渉フィルタを組合せた時の分光透過
率を示した特性図、第３図は、同実施例において使用し
た光電変換素子の分光感度を示した特性図、第４図は受
光部の分光感度が標準化視感度からはずれる場合の形態
を表わした特性図、第５図は受光部内での入射光の流れ
を示す図、第６図は標準化視感度を示す特性図、第７図
は従来の照度計受光部の断面図である。
１・・・光拡散板、２・・・入射光制御板、３・・・屈
折率分布型レンズ、４・・・視感度補正フィルタ、５・
・・干渉フィルタ、６・・・支持板、７・・・光電変換
素子、８・・・光拡散板、９・・・照度計受光部基板、
１０・・視感度補正フィルタ、１１・・光電変換素子
代理人の氏名 弁理士 中尾敏男 はか１名窮 １ 図
第２図
ＲＥＬＡＴＴＶＥ ＦｔＥ５ＰＯＷ５工ＶＩＴＹ第
４図
改ン
（ｂ）ｔｃ） （ｄ）第５図
第 ６ 図
第７図Fig. in1 is an exploded perspective view of the illumination meter light receiving section in one embodiment of the present invention, and Fig. 2 is a spectral transmittance curve and interference filter when using the interference filter that constitutes the visibility correction filter used in the same embodiment. Fig. 3 is a characteristic diagram showing the spectral sensitivity of the photoelectric conversion element used in the same example, and Fig. 4 shows the spectral sensitivity of the light receiving section when the spectral sensitivity is normalized. Figure 5 is a diagram showing the flow of incident light within the light receiving section, Figure 6 is a characteristic diagram showing standardized luminous efficiency, and Figure 7 is a diagram showing the shape of the conventional illumination meter light receiving section. FIG. DESCRIPTION OF SYMBOLS 1... Light diffusing plate, 2... Incident light control plate, 3... Refractive index distribution type lens, 4... Visibility correction filter, 5...
... Interference filter, 6 ... Support plate, 7 ... Photoelectric conversion element, 8 ... Light diffusion plate, 9 ... Illuminometer light receiving part board,
10... Visibility correction filter, 11... Name of photoelectric conversion element agent Patent attorney Toshio Nakao 1 Figure 2 RELATTVE FtE5POW5 Engineering VITY Figure 4 Revised
(b) tc) (d) Figure 5 Figure 6 Figure 7
Claims (1)
記素子の上に配置し光が通過するための複数の円柱状の
開口部をもつ支持板と、前記支持板の開口部と同じ直径
を持ち、分光透過特性の異なる数種類の棒状の干渉フィ
ルタによって構成された視感度補正フィルタと、前記干
渉フィルタの上部に位置し、前記支持板の開口部と同じ
直径を持つ棒状の１／４ピッチ長の屈折率分布型レンズ
と、前記屈折立分布型レンズへの入射光を制御するため
のアパーチャを持つ入射光制御板とから構成することに
より、受光部の分光感度が標準化視感度に精度よく合致
するように補正した照度計受光部。a light diffusing plate for correcting oblique incident angle characteristics, a photoelectric conversion element, a support plate disposed above the element and having a plurality of cylindrical openings for light to pass through, and a support plate having the same openings as the support plate. a visibility correction filter composed of several types of rod-shaped interference filters having different diameters and different spectral transmission characteristics; and a rod-shaped 1/4 located above the interference filter and having the same diameter as the opening of the support plate. By comprising a gradient index lens with a pitch length and an incident light control plate with an aperture for controlling the incident light to the gradient gradient lens, the spectral sensitivity of the light receiving section can be adjusted to the standard luminous sensitivity. Illuminance meter light receiving section corrected to match well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2272687A JPH0684908B2 (en) | 1987-02-03 | 1987-02-03 | Illuminometer receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2272687A JPH0684908B2 (en) | 1987-02-03 | 1987-02-03 | Illuminometer receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63191033A true JPS63191033A (en) | 1988-08-08 |
| JPH0684908B2 JPH0684908B2 (en) | 1994-10-26 |
Family
ID=12090764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2272687A Expired - Lifetime JPH0684908B2 (en) | 1987-02-03 | 1987-02-03 | Illuminometer receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684908B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113235A (en) * | 1990-09-04 | 1992-04-14 | Minolta Camera Co Ltd | Photosensor |
| US5739915A (en) * | 1996-05-08 | 1998-04-14 | United Microelectronics Corp. | Electro-optical system for scanning color documents |
| JP2020197483A (en) * | 2019-06-04 | 2020-12-10 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ | Mobile body and sensor unit |
-
1987
- 1987-02-03 JP JP2272687A patent/JPH0684908B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04113235A (en) * | 1990-09-04 | 1992-04-14 | Minolta Camera Co Ltd | Photosensor |
| US5739915A (en) * | 1996-05-08 | 1998-04-14 | United Microelectronics Corp. | Electro-optical system for scanning color documents |
| JP2020197483A (en) * | 2019-06-04 | 2020-12-10 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ | Mobile body and sensor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0684908B2 (en) | 1994-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04113235A (en) | Photosensor | |
| CN102859339B (en) | Optical system for measurements, and luminance colorimeter and colorimeter using same | |
| JPS63191033A (en) | Light receiving section for illumination meter | |
| JP2000258246A (en) | Total luminous flux measuring method and device | |
| JPH0421257A (en) | Picture reader | |
| JPS639610B2 (en) | ||
| JPS63154920A (en) | Light receiving part of illuminometer | |
| JPH06273232A (en) | Light intercepting optical system for colorimeter | |
| JP4542648B2 (en) | Photometric device | |
| JPS6222030A (en) | Photodetection part of illuminance meter | |
| CN215986755U (en) | Rainbow generator | |
| JP2584773B2 (en) | Image reading device | |
| JPS6222031A (en) | Photodetection part of illuminance meter | |
| JPS6183921A (en) | Illuminometer | |
| JPS61130828A (en) | Light receiving section of illuminometer | |
| JPS61130829A (en) | Light receiving section for illuminometer | |
| JPH04140619A (en) | Spectroscope | |
| JPH0360050B2 (en) | ||
| JPS63154919A (en) | Light receiving part of illuminometer | |
| JPS58190731A (en) | Paschen-runge type spectroscope | |
| JPH0455725A (en) | Irradiance meter obeying cosine rule | |
| JPS60182856A (en) | Optical information reader | |
| JPH0855506A (en) | Line lighting system | |
| JPS6222032A (en) | Photodetection part of illuminance meter | |
| WO2016208462A1 (en) | Measureing device and method of manufacturing measureing device |