Title:
テレセントリック撮像を用いた光学位置決めデバイス
Document Type and Number:
Japanese Patent JP4565243
Kind Code:
B2
Abstract:
An optical displacement sensor for sensing movement of a data input device across a surface by determining displacement of optical features in a succession of frames (see figure 3). The sensor includes at least an illuminator (306), telecentric imaging optics for example, (see figure 5, 502 or 504) on the object (scattering surface) side, and an array of photosensitive elements (302). The illuminator (306) is configured to illuminate a portion of the surface (402). The telecentric imaging optics (see figure 5, 502 or 504) is configured to image the optical features emanating from the illuminated portion of the surface (see figure 4, 402), and the array of photosensitive elements (302) is configured to detect intensity data relating to the optical features imaged by the telecentric imaging optics (see figure 5, 502 or 504).
Inventors:
Trisnadi, jersey, eye
Carlisle, Clinton, Bee
Roxiro, charles, bee
Rehoti, David, A
Carlisle, Clinton, Bee
Roxiro, charles, bee
Rehoti, David, A
Application Number:
JP2007527424A
Publication Date:
October 20, 2010
Filing Date:
May 18, 2005
Export Citation:
Assignee:
Cypress Semiconductor Coporation
International Classes:
G06F3/0354; G06F3/03; G09G5/08
Domestic Patent References:
| JP7318325A | ||||
| JP2001521651A |
Foreign References:
| WO2003102664A1 |
Attorney, Agent or Firm:
Kazuo Asahi
Tatsuya Masuda
Takeshi Ebe
Tatsuya Masuda
Takeshi Ebe