JPS62142723U - - Google Patents
Info
- Publication number
- JPS62142723U JPS62142723U JP2804286U JP2804286U JPS62142723U JP S62142723 U JPS62142723 U JP S62142723U JP 2804286 U JP2804286 U JP 2804286U JP 2804286 U JP2804286 U JP 2804286U JP S62142723 U JPS62142723 U JP S62142723U
- Authority
- JP
- Japan
- Prior art keywords
- half mirror
- reflected
- detection device
- information detection
- diffractive
- 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 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案にかかる光情報検出装置の第１
実施例の光学系構成図である。第２図は従来の光
情報検出装置の光学系構成図である。第３図は本
考案にかかる光情報検出装置の第２実施例の光学
系構成図である。
１……半導体レーザー、２……平板ガラス、２
ａ……回折型発散レンズ、２ｂ……凹球面、４…
…対物レンズ、７……ハーフミラー。
Figure 1 shows the first part of the optical information detection device according to the present invention.
FIG. 2 is a configuration diagram of an optical system according to an embodiment. FIG. 2 is a diagram showing the configuration of an optical system of a conventional optical information detection device. FIG. 3 is a diagram showing the configuration of an optical system of a second embodiment of the optical information detection device according to the present invention. 1... Semiconductor laser, 2... Flat glass, 2
a...Diffractive diverging lens, 2b...Concave spherical surface, 4...
...Objective lens, 7...Half mirror.
Claims (1)
光を検出する光情報検出装置において、一方の面
をハーフミラー平面とし、その裏面を回折型発散
レンズ又は凹球面として、前記光源からの光源を
前記ハーフミラーによつて反射し、対物レンズを
介して物体面上に集束し、該物体面より反射され
た反射光を、前記ハーフミラーと前記回折型発散
レンズ又は凹球面を介して検出する構成の光学系
を有することを特徴とする光情報検出装置。 In an optical information detection device that focuses a light source from a light source onto an object surface and detects the reflected light, one surface is a half mirror plane and the back surface is a diffractive diverging lens or a concave spherical surface. is reflected by the half mirror and focused onto an object surface via an objective lens, and the reflected light reflected from the object surface is detected via the half mirror and the diffractive diverging lens or concave spherical surface. 1. An optical information detection device comprising an optical system configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2804286U JPS62142723U (en) | 1986-02-27 | 1986-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2804286U JPS62142723U (en) | 1986-02-27 | 1986-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62142723U true JPS62142723U (en) | 1987-09-09 |
Family
ID=30830636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2804286U Pending JPS62142723U (en) | 1986-02-27 | 1986-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62142723U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52119907A (en) * | 1976-04-01 | 1977-10-07 | Victor Co Of Japan Ltd | Light beam branching device in video disc reproducers |
| JPS5476177A (en) * | 1977-11-30 | 1979-06-18 | Citizen Watch Co Ltd | Optical reader |
| JPS5979441A (en) * | 1982-10-29 | 1984-05-08 | Omron Tateisi Electronics Co | Pickup for optical digital disk |
-
1986
- 1986-02-27 JP JP2804286U patent/JPS62142723U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52119907A (en) * | 1976-04-01 | 1977-10-07 | Victor Co Of Japan Ltd | Light beam branching device in video disc reproducers |
| JPS5476177A (en) * | 1977-11-30 | 1979-06-18 | Citizen Watch Co Ltd | Optical reader |
| JPS5979441A (en) * | 1982-10-29 | 1984-05-08 | Omron Tateisi Electronics Co | Pickup for optical digital disk |