JPS6336922U - - Google Patents
Info
- Publication number
- JPS6336922U JPS6336922U JP12844286U JP12844286U JPS6336922U JP S6336922 U JPS6336922 U JP S6336922U JP 12844286 U JP12844286 U JP 12844286U JP 12844286 U JP12844286 U JP 12844286U JP S6336922 U JPS6336922 U JP S6336922U
- Authority
- JP
- Japan
- Prior art keywords
- light
- reflected
- half mirror
- optical
- reading device
- 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 10
- 238000001514 detection method Methods 0.000 claims 2
- 239000006059 cover glass Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案の一実施例の光学式読取り装置
１０の光量検出器１１の断面図、第２図は光学式
読取り装置１０の構成を示す図、第３図は従来技
術の光学式読取り装置の光量検出器１の断面図で
ある。
１０…光学式読取り装置、１１，１８…光量検
出器、１２…半導体レーザダイオード、１４…ハ
ーフミラー、１５，１６，１７…光学レンズ、２
０…情報記録媒体、２０ａ…記録面、２１，２４
…受光素子、２１ａ…受光面、２４ａ，２５ａ…
反射面、２５…カバーガラス。
FIG. 1 is a cross-sectional view of a light amount detector 11 of an optical reading device 10 according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of the optical reading device 10, and FIG. 3 is a conventional optical reading device. FIG. 2 is a cross-sectional view of a light amount detector 1 of the device. 10... Optical reader, 11, 18... Light amount detector, 12... Semiconductor laser diode, 14... Half mirror, 15, 16, 17... Optical lens, 2
0... Information recording medium, 20a... Recording surface, 21, 24
... Light receiving element, 21a... Light receiving surface, 24a, 25a...
Reflective surface, 25...Cover glass.
Claims (1)
その反射した光を第１光学手段によつて、情報が
記録された記録媒体の記録面上に点結像させ、前
記記録面で反射した光が前記第１光学手段とハー
フミラーとを透過して、第２光学手段によつて第
１光量検出手段の受光面上に結像させて前記情報
を読取るようにし、前記ハーフミラーに関して光
源とは反対側に設けられた第２光量検出手段の出
力によつて、前記光源の光出力を制御することが
できるようにした光学式読取り装置において、 前記第２光量検出手段は、前記入射光のうち、
その界面において反射した光が前記入射光の経路
とは異なる経路を進むように設けられていること
を特徴とする光学式読取り装置。[Claims for utility model registration] Light emitted from a light source is reflected by a half mirror,
The reflected light is formed into a point image by the first optical means on the recording surface of the recording medium on which information is recorded, and the light reflected from the recording surface is transmitted through the first optical means and the half mirror. The information is read by forming an image on the light receiving surface of the first light amount detection means by the second optical means, and the output of the second light amount detection means provided on the opposite side of the light source with respect to the half mirror. In the optical reading device capable of controlling the light output of the light source, the second light amount detecting means detects the amount of light of the incident light.
An optical reading device characterized in that the light reflected at the interface travels along a different path from the path of the incident light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12844286U JPS6336922U (en) | 1986-08-22 | 1986-08-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12844286U JPS6336922U (en) | 1986-08-22 | 1986-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6336922U true JPS6336922U (en) | 1988-03-09 |
Family
ID=31024116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12844286U Pending JPS6336922U (en) | 1986-08-22 | 1986-08-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6336922U (en) |
-
1986
- 1986-08-22 JP JP12844286U patent/JPS6336922U/ja active Pending