Source: https://patents.google.com/patent/US8345003B1/en
Timestamp: 2019-12-08 16:24:11
Document Index: 343942691

Matched Legal Cases: ['application No. 60', 'application No. 60', 'Application No. 10', 'Application No. 10', 'Application No. 05749412', 'Application No. 200580022643', 'Application No. 200580024624', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007']

US8345003B1 - Optical positioning device using telecentric imaging - Google Patents
US8345003B1
US8345003B1 US12/843,864 US84386410A US8345003B1 US 8345003 B1 US8345003 B1 US 8345003B1 US 84386410 A US84386410 A US 84386410A US 8345003 B1 US8345003 B1 US 8345003B1
US12/843,864
2010-07-26 Application filed by Cypress Semiconductor Corp filed Critical Cypress Semiconductor Corp
2010-07-26 Priority to US12/843,864 priority patent/US8345003B1/en
2012-04-03 Assigned to SILICON LIGHT MACHINES CORPORATION reassignment SILICON LIGHT MACHINES CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROXLO, CHARLES B., CARLISLE, CLINTON B., LEHOTY, DAVID A., TRISNADI, JAHJA I.
2013-01-01 Publication of US8345003B1 publication Critical patent/US8345003B1/en
The present application is a continuation of U.S. nonprovisional application Ser. No. 11/125,858, now U.S. Pat. No. 7,773,070, filed May 9, 2005, which claims the benefit of U.S. provisional application No. 60/573,316, filed May 21, 2004, and U.S. provisional application No. 60/573,075, filed May 21, 2004, all of which are hereby incorporated by reference herein in their entirety.
DETAILED DESCRIPTION Speckle “Boiling” Problem
an illuminator configured to illuminate a portion of a surface using a coherent light source;
object-side telecentric imaging optics configured to reduce speckle boiling of optical features of a speckle pattern generated by the coherent light source and emanating from the illuminated portion of the surface; and
an array of photosensitive elements comprising a comb array, wherein the array of photosensitive elements is configured to detect intensity data relating to the optical features imaged by the object-side telecentric imaging optics.
2. The optical displacement sensor according to claim 1, wherein the optical features imaged by the object-side telecentric imaging optics are substantially invariant during translation of the surface with respect to the data input device.
3. The optical displacement sensor according to claim 1, wherein the coherent light source comprises a Vertical Cavity Surface Emitting Laser (VCSEL), and wherein the photosensitive elements comprise photodiodes.
4. The optical displacement sensor according to claim 1, wherein the object-side telecentric imaging optics is configured such that chief rays from points on the surface in a field of view are substantially parallel when the chief rays leave the surface.
5. The optical displacement sensor according to claim 4, wherein the chief rays are normal to the surface when the chief rays leave the surface.
6. The optical displacement sensor according to claim 4, wherein the chief rays leave the surface at an angle which is not normal to the surface.
7. The optical displacement sensor according to claim 1, wherein the object-side telecentric imaging optics comprises:
8. The optical displacement sensor according to claim 7, wherein the first lens has a focal length substantially equal to an optical distance between the first lens and the aperture.
9. The optical displacement sensor according to claim 8, further comprising image-side telecentric imaging optics which comprises:
10. The optical displacement sensor according to claim 7, wherein the aperture comprises an optical element which defines a numerical aperture of light which is detected by the photosensitive elements.
11. The optical displacement sensor according to claim 10, wherein the aperture further comprises an optical element which has both a substantially transparent section and a substantially opaque section.
12. The optical displacement sensor according to claim 11, wherein the aperture has a substantially transparent section which is circular in shape.
13. The optical displacement sensor according to claim 1, wherein the optical features comprise speckle, a complex interference pattern created by light reflected from the surface, and wherein the optical displacement sensor comprises a speckle-based displacement sensor adapted to sense movement of the data input device across the surface based on displacement of the speckle pattern.
illuminating a portion of a surface using coherent light;
reducing speckle boiling of a speckle pattern generated by the coherent light using object-side telecentric imaging optics;
mapping images of the speckle pattern to an array of photosensitive elements comprising a comb array using the telecentric imaging optics; and
determining displacement of optical features of the speckle pattern emanating from the illuminated portion of the surface in a succession of frames to sense movement of the data input device across the surface in at least one dimension.
15. The method according to claim 14, wherein the illuminating is performed by using a laser.
16. The method according to claim 14, further comprising detecting intensity data of the optical features.
17. The method according to claim 14, further comprising sensing movement of an input device relative to a surface based on the displacement of the optical features.
a laser configured to illuminate a portion of the surface;
telecentric imaging optics on an object side configured to reduce speckle boiling of a speckle pattern from the illuminated portion of the surface and to focus the speckle pattern to the array of photosensitive elements, wherein the array of photosensitive elements comprises a comb array; and
a signal processor configured to determine displacement of the speckle pattern in a succession of frames.
19. The optical positioning device of claim 18, wherein the object-side telecentric imaging optics comprises:
20. The optical positioning device of claim 18, wherein the illumination has a substantially uniform wave front before impinging upon the surface.
US12/843,864 2004-05-21 2010-07-26 Optical positioning device using telecentric imaging Active US8345003B1 (en)
US11/124,858 Continuation US7773070B2 (en) 2004-05-21 2005-05-09 Optical positioning device using telecentric imaging
US8345003B1 true US8345003B1 (en) 2013-01-01
WO2016051323A1 (en) * 2014-09-29 2016-04-07 Basf Se Detector for optically determining a position of at least one object
US20170061226A1 (en) * 2014-03-13 2017-03-02 Pixart Imaging Inc. Optical encoder capable of identifying absolute positions and operating method thereof
US5345257A (en) 1991-03-08 1994-09-06 Mita Industrial Co., Ltd. Box body construction of a digital image forming apparatus
US20050117137A1 (en) 2003-09-25 2005-06-02 Tomoharu Hase Illumination system and exposure apparatus
"The Examiner's Grounds for Rejection," from Korean Patent Office for Patent Application No. 10-2006-7026956; Dec. 31, 2007; 4 pages.
1st Office Action for Korean Patent Application No. 10-2006-7026821 dated Apr. 28, 2008; 2 pages.
Foreign Office Action for Application No. 05749412.2 dated Jan. 24, 2011; entire document.
Foreign Office Action for Application No. 200580022643.5 dated Jan. 4, 2008; entire document.
Foreign Office Action for Application No. 200580024624.6 dated Feb. 15, 2008; entire document.
Foreign Office Action for Application No. 2007-527424 dated Nov. 25, 2008; entire document.
Foreign Office Action for Application No. 2007-527528 dated Nov. 30, 2010; entire document.
Foreign Office Action for Application No. 2007-527528 dated Sep. 29, 2009; entire document.
International Search Report and Written Opinion of the International Searching Authority for International Application No. PCT/US05/17982 mailed Feb. 15, 2006; 6 pages.
International Search Report and Written Opinion of the International Searching Authority for International Application No. PCT/US05/17983 mailed Jan. 26, 2007; 8 pages.
R E. Kalman, "A New Approach to Linear Filtering and Prediction Problems", Transactions of the ASME-Journal of Basic Engineering, 82 (Series D); Copyright 1960, ASME, pp. 35-45, Research Institute for Advanced Study, Baltimore, MD.
U.S. Appl. No. 11/123,326: Optical Position Sensing Device including Interlaced Groups of Photosensitive Elements, Lehoty et al.; 51 pages, Jun. 8, 2005.
U.S. Appl. No. 11/123,500: "Optical positioning device using different combinations of interlaced photosensitive elements," Lehoty et al.; 49 pages, Jun. 8, 2005.
U.S. Appl. No. 11/123,525: "Optical positioning device with multi-row detector array," Roxlo et al.; 51 pages, Jun. 10, 2005.
U.S. Appl. No. 11/123,527: "Optical positioning device resistant to speckle fading," LeHoty et al.; 52 pages, May 5, 2005.
U.S. Appl. No. 11/124,858: "Optical positioning device using telecentric imaging ," Trisnadi et al.; 31 pages.
U.S. Appl. No. 11/128,988: "Speckle sizing and sensor dimensions in optical positioning device;" Carlisle et al.; 27 pages, May 13, 2005.
U.S. Appl. No. 11/129,967: "Optical positioning device having shaped illumination," Carlisle et al.; 27 pages, May 16, 2005.
U.S. Appl. No. 11/261,316: "Two-Dimensional Motion Sensor," Trisnadi et al.; 55 pages, Oct. 28, 2005.
U.S. Appl. No. 11/582,776: "Two-Dimensional Motion Sensor," Trisnadi et al.; 54 pages, Oct. 18, 2006.
U.S. Appl. No. 60/573,062: "Speckle-based optical position sensing device having speckle size matched to a sensor dimension," Carlisle, filed on May 21, 2004; 51 pages.
U.S. Appl. No. 60/573,394: "Optical position sensing device having shaped illumination," Clinton B. Carlisle, filed on May 21, 2004; 53 pages.
USPTO Notice of Allowance for U.S. Appl. No. 11/124,858 dated Apr. 2, 2010; 7 pages.
USTPO Non-Final Rejection for U.S. Appl. No. 11/129,967 dated Dec. 6, 2006; 8 pages.
US7773070B2 (en) 2010-08-10
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TRISNADI, JAHJA I.;CARLISLE, CLINTON B.;ROXLO, CHARLES B.;AND OTHERS;SIGNING DATES FROM 20050429 TO 20050501;REEL/FRAME:027981/0957