JPH01175357U - - Google Patents
Info
- Publication number
- JPH01175357U JPH01175357U JP7183488U JP7183488U JPH01175357U JP H01175357 U JPH01175357 U JP H01175357U JP 7183488 U JP7183488 U JP 7183488U JP 7183488 U JP7183488 U JP 7183488U JP H01175357 U JPH01175357 U JP H01175357U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- contact surface
- light
- transparent body
- detection 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Description
第１図は本考案の第１実施例を示す凹凸検出装
置の正面図。第２図は本考案の第２実施例を示す
凹凸検出装置の正面図。第３図は従来の実施例の
全反射法の正面図。第４図は従来の実施例の光路
分離法の正面図。
１１……指、１２……台形プリズム、１３……
接触面、１４……照明、１５……接触部、１６…
…散乱光、１７，２６……接触面に平行な面、１
８……検出部、１９……非接触部、２０……全反
射光、２１……透過面、２２……黒い壁、２５…
…平行四辺形プリズム。
FIG. 1 is a front view of an unevenness detection device showing a first embodiment of the present invention. FIG. 2 is a front view of an unevenness detection device showing a second embodiment of the present invention. FIG. 3 is a front view of the conventional total reflection method. FIG. 4 is a front view of a conventional optical path separation method. 11...Finger, 12...Trapezoidal prism, 13...
Contact surface, 14... Lighting, 15... Contact portion, 16...
...scattered light, 17,26...plane parallel to the contact surface, 1
8...Detection part, 19...Non-contact part, 20...Totally reflected light, 21...Transmission surface, 22...Black wall, 25...
...parallelogram prism.
Claims (1)
体に、透明体を通じて入射された光が接触面にて
全反射するように照明を設置し、被検体が接触し
た時、接触している部分での散乱光を検出し、接
触面での全反射光を検出しない接触面の下方の位
置に検出部を設けることを特徴とする凹凸検出装
置。 Lighting is installed on a transparent body that has a surface that is in contact with an uneven object so that the light incident through the transparent body is totally reflected on the contact surface, and when the object comes into contact with it, the light that is in contact with the object is illuminated. What is claimed is: 1. An unevenness detection device characterized by having a detection section located below a contact surface that detects scattered light from the contact surface and does not detect total reflected light at the contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183488U JPH01175357U (en) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183488U JPH01175357U (en) | 1988-05-31 | 1988-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01175357U true JPH01175357U (en) | 1989-12-13 |
Family
ID=31297023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7183488U Pending JPH01175357U (en) | 1988-05-31 | 1988-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03256185A (en) * | 1990-03-07 | 1991-11-14 | Sharp Corp | Finger print input device |
-
1988
- 1988-05-31 JP JP7183488U patent/JPH01175357U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03256185A (en) * | 1990-03-07 | 1991-11-14 | Sharp Corp | Finger print input device |
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