JPH0449319U - - Google Patents
Info
- Publication number
- JPH0449319U JPH0449319U JP8892090U JP8892090U JPH0449319U JP H0449319 U JPH0449319 U JP H0449319U JP 8892090 U JP8892090 U JP 8892090U JP 8892090 U JP8892090 U JP 8892090U JP H0449319 U JPH0449319 U JP H0449319U
- Authority
- JP
- Japan
- Prior art keywords
- light
- information reading
- photoelectric converter
- optical
- condensing
- 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
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図乃至第３図は本考案の光情報読取り装置
の各異なる実施例のブロツク図、第４図は従来例
装置のブロツク図である。
１……光デイスク、４……光学ヘツド、５，１
２……半導体レーザ、６……ハーフミラー、７…
…フレネルゾーンプレート、８，９，１６ａ，１
６ｂ，１７ａ，１７ｂ……フオトダイオード、１
０，１８ａ，１８ｂ……除算回路、１１……基板
、１３……光導波路、１４……グレーテイング・
ビームスプリツタ、１５……集光グレーテイング
・カプラ。
1 to 3 are block diagrams of different embodiments of the optical information reading device of the present invention, and FIG. 4 is a block diagram of a conventional device. 1...Optical disk, 4...Optical head, 5,1
2... Semiconductor laser, 6... Half mirror, 7...
...Fresnel zone plate, 8, 9, 16a, 1
6b, 17a, 17b...Photodiode, 1
0, 18a, 18b...Division circuit, 11...Substrate, 13...Optical waveguide, 14...Grating
Beam splitter, 15... Concentrating grating coupler.
補正 平３．９．１０
実用新案登録請求の範囲を次のように補正する
。Amendment 3/9/10 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
１ 予め定められた一定の波長の光を放射できる
情報読取り光の光源と、前記した情報読取り光の
光源から放射された情報読取り光の波長近傍の波
長の光によつて所定の集光特性を示すように構成
されている集光素子を含んで構成されている光情
報読取り装置であつて、前記した集光素子によつ
て光学的情報記録媒体に集光された情報読取り光
のスポツトからの反射光を光電変換する第１の光
電変換器と、前記した情報読取り光の光源から放
射された光の強度の検知結果を出力する第２の光
電変換器と、前記した第１の光電変換器の出力信
号と前記した第２の光電変換器の出力信号とを除
算する除算器とを備えてなる光情報読取り装置。
２ 薄膜光導波路と集光グレーテイングカプラと
光電変換器と除算器とが光集積回路化されている
請求項１に記載の光情報読取り装置。[Claims for Utility Model Registration] 1. A light source for information reading light that can emit light of a predetermined constant wavelength, and light having a wavelength near the wavelength of the information reading light emitted from the above-mentioned light source for information reading light. Therefore, it is an optical information reading device configured to include a condensing element configured to exhibit predetermined light condensing characteristics, and in which light is condensed onto an optical information recording medium by the aforementioned condensing element. a first photoelectric converter that photoelectrically converts reflected light from the spot of the information reading light; a second photoelectric converter that outputs a detection result of the intensity of the light emitted from the light source of the information reading light; An optical information reading device comprising a divider that divides the output signal of the first photoelectric converter described above and the output signal of the second photoelectric converter described above. 2. The optical information reading device according to claim 1, wherein the thin film optical waveguide, the condensing grating coupler, the photoelectric converter, and the divider are integrated into an optical integrated circuit.
Claims (1)
情報読取り光の光源と、前記した情報読取り光の
光源から放射された情報読取り光の波長近傍の波
長の光によつて所定の集光特性を示すように構成
されている集光素子を含んで構成されている光情
報読取り装置であつて、前記した集光素子によつ
て光学的情報記録媒体に集光された情報読取り光
のスポツトからの反射光を光電変換する第１の光
電変換器と、前記した情報読取り光の光源から放
射された情報読取り光を光電変換する第２の光電
変換器と、前記した第１の光電変換器の出力信号
と前記した第２の光電変換器の出力信号とを除算
する除算器とを備えてなる光情報読取り装置。 ２ 薄膜光導波路と集光グレーテイングカプラと
光電変換器と除算器とが光集積回路化されている
請求項１に記載の光情報読取り装置。[Claims for Utility Model Registration] 1. A light source for information reading light that can emit light of a predetermined constant wavelength, and light having a wavelength near the wavelength of the information reading light emitted from the above-mentioned light source for information reading light. Therefore, it is an optical information reading device configured to include a condensing element configured to exhibit predetermined light condensing characteristics, and in which light is condensed onto an optical information recording medium by the aforementioned condensing element. a first photoelectric converter that photoelectrically converts reflected light from the spot of the information reading light; a second photoelectric converter that photoelectrically converts the information reading light emitted from the light source of the information reading light; An optical information reading device comprising a divider that divides the output signal of the first photoelectric converter and the output signal of the second photoelectric converter. 2. The optical information reading device according to claim 1, wherein the thin film optical waveguide, the condensing grating coupler, the photoelectric converter, and the divider are integrated into an optical integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8892090U JPH0449319U (en) | 1990-08-25 | 1990-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8892090U JPH0449319U (en) | 1990-08-25 | 1990-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0449319U true JPH0449319U (en) | 1992-04-27 |
Family
ID=31822540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8892090U Pending JPH0449319U (en) | 1990-08-25 | 1990-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449319U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085447A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Optical reproducing device |
| JPS60202553A (en) * | 1984-03-27 | 1985-10-14 | Nec Corp | Waveguide path type optical head |
| JPS61190723A (en) * | 1985-02-19 | 1986-08-25 | Mitsubishi Electric Corp | Optical head device |
| JPS6297147A (en) * | 1985-10-23 | 1987-05-06 | Hitachi Ltd | Optical pickup |
-
1990
- 1990-08-25 JP JP8892090U patent/JPH0449319U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085447A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Optical reproducing device |
| JPS60202553A (en) * | 1984-03-27 | 1985-10-14 | Nec Corp | Waveguide path type optical head |
| JPS61190723A (en) * | 1985-02-19 | 1986-08-25 | Mitsubishi Electric Corp | Optical head device |
| JPS6297147A (en) * | 1985-10-23 | 1987-05-06 | Hitachi Ltd | Optical pickup |
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