JPH01152224U - - Google Patents
Info
- Publication number
- JPH01152224U JPH01152224U JP5002288U JP5002288U JPH01152224U JP H01152224 U JPH01152224 U JP H01152224U JP 5002288 U JP5002288 U JP 5002288U JP 5002288 U JP5002288 U JP 5002288U JP H01152224 U JPH01152224 U JP H01152224U
- Authority
- JP
- Japan
- Prior art keywords
- light amount
- splitting
- polarization components
- measuring 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
- 230000010287 polarization Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Optical Head (AREA)
Description
第１図は本考案に係る光量測定装置の一実施例
の構成図、第２図は光ピツクアツプのレーザダイ
オードからの光量を測定する場合の第１図の光量
測定装置の動作を説明するための図、第３図は光
ピツクアツプの構成例を示す図、第４図は従来の
光量測定装置を示す図である。
１……偏光手段、２，３……受光素子、４，５
……電流−電圧変換手段、６……減算器、７……
表示器、Ｐ１……ＬＤ発光成分、Ｐ２……ＬＥＤ
発光成分。
FIG. 1 is a block diagram of an embodiment of a light amount measuring device according to the present invention, and FIG. 2 is a diagram for explaining the operation of the light amount measuring device shown in FIG. 1 when measuring the amount of light from a laser diode of an optical pickup. 3 and 3 are diagrams showing an example of the configuration of an optical pickup, and FIG. 4 is a diagram showing a conventional light amount measuring device. 1... Polarization means, 2, 3... Light receiving element, 4, 5
...Current-voltage conversion means, 6...Subtractor, 7...
Display unit, P 1 ... LD light emitting component, P 2 ... LED
Luminescent component.
Claims (1)
分割する偏光分割手段と、分割された異なる偏光
成分の光量の差を検出する検出手段とを備えてい
ることを特徴とする光量測定装置。 A light amount measuring device comprising: polarization splitting means for extracting and splitting different polarization components from incident light; and detection means for detecting a difference in light amount between the different split polarization components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5002288U JPH01152224U (en) | 1988-04-14 | 1988-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5002288U JPH01152224U (en) | 1988-04-14 | 1988-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152224U true JPH01152224U (en) | 1989-10-20 |
Family
ID=31276102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5002288U Pending JPH01152224U (en) | 1988-04-14 | 1988-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152224U (en) |
-
1988
- 1988-04-14 JP JP5002288U patent/JPH01152224U/ja active Pending
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