JPH0438533U - - Google Patents
Info
- Publication number
- JPH0438533U JPH0438533U JP7980190U JP7980190U JPH0438533U JP H0438533 U JPH0438533 U JP H0438533U JP 7980190 U JP7980190 U JP 7980190U JP 7980190 U JP7980190 U JP 7980190U JP H0438533 U JPH0438533 U JP H0438533U
- Authority
- JP
- Japan
- Prior art keywords
- cds
- photodetector
- series
- resistor
- analog
- 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
- 238000005375 photometry Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の測光装置の一実施例の構成図
、第２図は本実施例の光量とビツト値との関係を
示す説明図、第３図は本実施例の光量とビツト差
との関係を示す説明図、第４図は本実施例の測光
動作のフローチヤート、第５図は従来の測光装置
を示す構成図、第６図は従来のＡ／Ｄ・Ｃの端子
電圧と光量との関係を示す説明図、第７図は従来
のビツト値と光量との関係を示す説明図である。
１１……電源電池、１２……ＣＰＵ、１３……
ＣｄＳ受光素子、１４ａ，１４ｂ，１４ｃ……抵
抗、１５……アナログ／デジタル・コンバータ、
１６ａ，１６ｂ，１６ｃ……切換手段。
Fig. 1 is a block diagram of an embodiment of the photometric device of the present invention, Fig. 2 is an explanatory diagram showing the relationship between the light quantity and bit value of this embodiment, and Fig. 3 is a diagram showing the relationship between the light quantity and bit value of this embodiment. 4 is a flowchart of the photometry operation of this embodiment, FIG. 5 is a configuration diagram showing a conventional photometry device, and FIG. 6 is a diagram showing the terminal voltage and light intensity of a conventional A/D/C. FIG. 7 is an explanatory diagram showing the relationship between the conventional bit value and the amount of light. 11...Power battery, 12...CPU, 13...
CdS light receiving element, 14a, 14b, 14c...Resistor, 15...Analog/digital converter,
16a, 16b, 16c...Switching means.
Claims (1)
続された抵抗との分圧電圧をアナログ・デジタル
変換することにより測光を行う測定装置において
、前記ＣｄＳ受光素子に抵抗値が異なる複数の抵
抗を直列に接続し、受光量によつてＣｄＳ受光素
子と抵抗との接続を切換える切換手段を備えたこ
とを特徴とする測光装置。 In a measurement device that performs photometry by analog-to-digital conversion of a divided voltage between a CdS photodetector and a resistor connected in series to the CdS photodetector, a plurality of resistors having different resistance values are connected in series to the CdS photodetector. 1. A photometric device comprising a switching means for connecting the CdS light receiving element and the resistor according to the amount of received light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980190U JPH0438533U (en) | 1990-07-30 | 1990-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980190U JPH0438533U (en) | 1990-07-30 | 1990-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438533U true JPH0438533U (en) | 1992-03-31 |
Family
ID=31624291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7980190U Pending JPH0438533U (en) | 1990-07-30 | 1990-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438533U (en) |
-
1990
- 1990-07-30 JP JP7980190U patent/JPH0438533U/ja active Pending