Optical coupling assembly for image sensing operator input device
A technology of optical coupling and input devices, which is applied in the direction of measurement devices, optical devices, user/computer interaction input/output, etc., which can solve the problem that the charge-coupled device does not work well, the charge-coupled device is easy to saturate, the performance is reduced, etc. question
Inactive Publication Date: 2007-08-08
MICROSOFT TECH LICENSING LLC
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- Description
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- Application Information
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Problems solved by technology
In other words, a CCD will not work well if the ambient light conditions are variable
In addition, if an external light source, such as a strong bright light, is shone onto the image-generating surface, CCDs tend to saturate and their performance degrades rapidly
Method used
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[0040] The present invention provides a user input device for generating position information and providing the information to a computer system. The position information is generated based on the detected movement of the user input device or a part thereof. This movement is detected by recognizing a pattern or image on a surface that can move relative to a user input device and monitoring the relative movement of the pattern. An optical coupling is provided between the radiation source used to illuminate the surface and the detector that detects the image or pattern. This optical coupling provides one or more advantages, such as improved uniformity of illumination, effective amplification of radiation to increase exposure to the surface, increased electrostatic discharge (ESD) protection, and / or ease of manufacturing .
[0041] Although part of this description is made with reference to a mouse-type pointing device, the present invention can also be implemented in any type of com...
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An emitter lens (107) is provided between a radiation source (104) and a work surface (116) to be illuminated. The emitter lens (107) collects radiation and reshapes the illumination pattern to increase intensity and uniformity. The radiation source and emitter lens have associated housings (154, 152) which act to properly orient and align the emitter lens and radiation source. The emitter lens also acts to space the radiation source from an aperture (106) in a housing (150) of the computer input device to provide protection against damage due to electrostatic discharge (ESD). An imaging lens (155) is provided between the work surface (116) and an image sensor (110) to focus light reflected from the work surface (116) onto the image sensor (110). An imaging lens housing or holder (157) is provided to properly orient and align the imaging lens (155) with the image sensor (110). The imaging lens housing (157) provides an apron (300) which increases ESD discharge path length. The imaging lens housing (157) also provides bias members and a lens / sensor interface which act to accurately locate the imaging lens closely proximate the image sensor.
Description
Technical field [0001] The invention relates to an input device used in a computer system. More specifically, the present invention relates to an optical coupling assembly for an input device, which provides position information to a computer system according to the movement of the input device. Background technique [0002] A traditional computer input device (such as a mouse) includes a housing and a ball installed in the housing. The ball is either arranged in a conventional manner, where in a normal working position the ball contacts a working surface and rotates in response to the user's movement of the mouse on the working surface. The ball can also be set in the form of a tracking ball, which is rotated by the user's digital manipulation. In both cases, a position encoder is used to detect the rotation of the ball in the mouse and provide the computer with positional information indicating this rotation. In many cases, position information is used to control the movement o...
Claims
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IPC IPC(8): G06F3/033G01B11/24G06F3/038G06F3/03G06F3/0354G06F3/042H01L31/12
CPCG06F3/0317
Inventor 马诺里特·E·阿丹马克·W·卡瑟伯尔特埃里克·G·范福西苏勒西·文卡特
Owner MICROSOFT TECH LICENSING LLC