JPH0444058U - - Google Patents
Info
- Publication number
- JPH0444058U JPH0444058U JP8350990U JP8350990U JPH0444058U JP H0444058 U JPH0444058 U JP H0444058U JP 8350990 U JP8350990 U JP 8350990U JP 8350990 U JP8350990 U JP 8350990U JP H0444058 U JPH0444058 U JP H0444058U
- Authority
- JP
- Japan
- Prior art keywords
- light
- subject
- intermediary
- light source
- reflected 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
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 1
Landscapes
- Character Input (AREA)
Description
第１図は本考案にかかる光学式読み取り装置の
実施例を示す断面正面図、第２図は同上実施例の
断面平面図、第３図は同上実施例に適用可能な発
光量制御回路の例を示す回路図である。
２……拡散板、４……光源、６……検出部材、
９……被写体、１０……反射板、１１……光電変
換手段。
FIG. 1 is a cross-sectional front view showing an embodiment of the optical reading device according to the present invention, FIG. 2 is a cross-sectional plan view of the same embodiment, and FIG. 3 is an example of a light emission amount control circuit applicable to the above embodiment. FIG. 2...Diffusion plate, 4...Light source, 6...Detection member,
9...Subject, 10...Reflector, 11...Photoelectric conversion means.
Claims (1)
を介して被写体に照射し、その反射光を検出部材
に導いて被写体の画像を読み取る装置において、 上記仲介物からの反射光または上記光源からの
漏光が入射する位置に、被写体がないときの光量
を検出するための光電変換手段を設けたことを特
徴とする光学式読み取り装置。[Scope of Claim for Utility Model Registration] In a device that illuminates a subject with illumination light from a light source via an intermediary such as a diffuser plate or a reflector, and guides the reflected light to a detection member to read an image of the subject, the above-mentioned intermediary An optical reading device characterized in that a photoelectric conversion means for detecting the amount of light when there is no object is provided at a position where reflected light from an object or leaked light from the light source enters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8350990U JPH0444058U (en) | 1990-08-06 | 1990-08-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8350990U JPH0444058U (en) | 1990-08-06 | 1990-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444058U true JPH0444058U (en) | 1992-04-14 |
Family
ID=31814601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8350990U Pending JPH0444058U (en) | 1990-08-06 | 1990-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444058U (en) |
-
1990
- 1990-08-06 JP JP8350990U patent/JPH0444058U/ja active Pending
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