TW360774B - Rotation linear grating angle encoder - Google Patents
Rotation linear grating angle encoderInfo
- Publication number
- TW360774B TW360774B TW087115253A TW87115253A TW360774B TW 360774 B TW360774 B TW 360774B TW 087115253 A TW087115253 A TW 087115253A TW 87115253 A TW87115253 A TW 87115253A TW 360774 B TW360774 B TW 360774B
- Authority
- TW
- Taiwan
- Prior art keywords
- rotation
- grating
- laser
- light
- rotation axis
- Prior art date
Links
Landscapes
- Optical Transform (AREA)
Abstract
This invention relates to a rotation linear grating angle encoder, which comprises a laser source, a rotation body, a laser guidance device, and one or two sets of photo detection device; in which the rotation body comprises a linear grating and a rotation axis. Furthermore, a specific included angle exists between the grating normal line and the rotation axis. The engraving direction of the grating is orthogonal to the plane formed by the rotation axis and the grating normal line. When the laser guidance device guides the laser light to the grating in a direction parallel to the rotation axis, a non-zero-step diffraction light will diffract back in a direction opposite to the incident direction. The direction of the diffracted laser light will not change due to the rotation of the rotation body. However, the travel distance of light thereof alters along with a change in the rotation angle. Furthermore, the diffraction light is guided into the photo detection device by the laser guidance device to measure the travel distance of the diffraction light which can be used to estimate the rotation angle of the rotation body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW087115253A TW360774B (en) | 1998-09-14 | 1998-09-14 | Rotation linear grating angle encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW087115253A TW360774B (en) | 1998-09-14 | 1998-09-14 | Rotation linear grating angle encoder |
Publications (1)
Publication Number | Publication Date |
---|---|
TW360774B true TW360774B (en) | 1999-06-11 |
Family
ID=57940686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW087115253A TW360774B (en) | 1998-09-14 | 1998-09-14 | Rotation linear grating angle encoder |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW360774B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9146645B2 (en) * | 2013-04-03 | 2015-09-29 | Au Optronics (Suzhou) Corp., Ltd. | Touch panel including touch sensor array |
-
1998
- 1998-09-14 TW TW087115253A patent/TW360774B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9146645B2 (en) * | 2013-04-03 | 2015-09-29 | Au Optronics (Suzhou) Corp., Ltd. | Touch panel including touch sensor array |
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