JPS6451867U - - Google Patents
Info
- Publication number
- JPS6451867U JPS6451867U JP14755087U JP14755087U JPS6451867U JP S6451867 U JPS6451867 U JP S6451867U JP 14755087 U JP14755087 U JP 14755087U JP 14755087 U JP14755087 U JP 14755087U JP S6451867 U JPS6451867 U JP S6451867U
- Authority
- JP
- Japan
- Prior art keywords
- scattering plate
- spatial filter
- shows
- measuring device
- imaging lens
- 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
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Blocking Light For Cameras (AREA)
Description
第１図はこの考案の実施例を示し、空間フイル
タ式速度計測装置の光学系を示す構成図である。
第２図は散乱板を設けない場合の特性を示すもの
で、ａは結像された測定対象のパターンを示し、
ｂは受光信号の周波数スペクトルである。第３図
は散乱板を設けた場合の特性を示すもので、ａは
結像された測定対象のパターンを示し、ｂは受光
信号の周波数スペクトルである。
２……結像レンズ、３……結像面（空間フイル
タ面）、４……散乱板。
FIG. 1 shows an embodiment of this invention, and is a configuration diagram showing an optical system of a spatial filter type speed measuring device.
Figure 2 shows the characteristics when no scattering plate is provided, where a indicates the pattern of the imaged measurement target;
b is the frequency spectrum of the received light signal. FIG. 3 shows the characteristics when a scattering plate is provided, in which a shows the imaged pattern of the object to be measured, and b shows the frequency spectrum of the received light signal. 2...imaging lens, 3...imaging surface (spatial filter surface), 4...scattering plate.
Claims (1)
とを特徴とする空間フイルタ式速度計測装置。 A spatial filter type velocity measuring device characterized in that a scattering plate is placed in front of or behind an imaging lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14755087U JPS6451867U (en) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14755087U JPS6451867U (en) | 1987-09-29 | 1987-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451867U true JPS6451867U (en) | 1989-03-30 |
Family
ID=31418054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14755087U Pending JPS6451867U (en) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451867U (en) |
-
1987
- 1987-09-29 JP JP14755087U patent/JPS6451867U/ja active Pending
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