Covers for touch-sensing devices include a shielding layer; and a substrate, in which the substrate covers the shielding layer, and the substrate and the shielding layer are integrated and form a coplanar surface. The coplanar surface is a smooth surface, which has a surface roughness Ra in a range from about 0.05 μm to about 0.5 μm.

Covers for touch-sensing devices include a shielding layer; and a substrate, in which the substrate covers the shielding layer, and the substrate and the shielding layer are integrated and form a coplanar surface. The coplanar surface is a smooth surface, which has a surface roughness Ra in a range from about 0.05 μm to about 0.5 μm.

An optical detection device is applied to an optical finger navigation apparatus and suitable for a variety of appearance demands in order to simplify product qualification procedure. The optical detection device includes a substrate, a housing, an optical sensor and a cover. The housing is disposed on the substrate and comprising a first aperture. The optical sensor is disposed on the substrate and adapted to receive an optical signal through the first aperture. The cover is disposed on the housing to cover the first aperture. The cover has a first surface and a second surface opposite to each other. The first surface with a contour matched with a shape of the housing is attached to the housing, and the second surface with a contour manufactured for a predefined appearance demand does not affect conjunction between the housing and the cover.

An optical detection device is applied to an optical finger navigation apparatus and suitable for a variety of appearance demands in order to simplify product qualification procedure. The optical detection device includes a substrate, a housing, an optical sensor and a cover. The housing is disposed on the substrate and comprising a first aperture. The optical sensor is disposed on the substrate and adapted to receive an optical signal through the first aperture. The cover is disposed on the housing to cover the first aperture. The cover has a first surface and a second surface opposite to each other. The first surface with a contour matched with a shape of the housing is attached to the housing, and the second surface with a contour manufactured for a predefined appearance demand does not affect conjunction between the housing and the cover.

An electronic device may have a touch sensitive display that is insensitive to the presence of moisture. An array of pixels in the display may be used to display images. A display cover layer may overlap the array of pixels. A light source may illuminate an external object such as a finger of a user when the object contacts a surface of the display cover layer. This creates scattered light that may be detected by an array of light sensors. The light source may supply light to an edge of the display cover layer at an angle that ensures total internal reflection within the display cover layer is sustained across the display cover layer even when the display cover layer is immersed in water or otherwise exposed to moisture.

An optical input device includes at least one optically clear plate having at least one light source positioned at a peripheral edge thereof and arranged and configured to transmit frequency modulated light into the optically clear plate along its planar length at an angle such that the modulated light is contained within the plate via total internal reflection thereof. At least one photodetector is configured to receive some or all of the modulated light. A least one input mechanism is embedded within the optically clear plate and is mechanically moveable relative thereto. A processing module receives signals from the photodetector and generates data representative of information to be displayed on a display screen. Both mechanical movement of the input mechanism relative to the optically clear plate and the application of pressure to the clear plate generate respective changes in the modulated light received by the photodetector. A change in the modulated light received by the photodetector causes the processing module to generate data representative of a change in information to be displayed on the display screen.

An input device comprises a plurality of optical vibration sensors mounted in a common housing. Each optical vibration sensor comprises a diffractive optical element; a light source arranged to illuminate the diffractive optical element such that a first portion of light passes through the diffractive optical element and a second portion of light is reflected from the diffractive optical element; and a photo detector arranged to detect an interference pattern generated by said first and second portions of light. The optical vibration sensor is configured so that in use, after the first portion of light passes through the diffractive optical element, the first portion of light is reflected from a reflective surface onto the photo detector. The input device is placed in contact with a surface of a solid body, and an object is brought into physical contact with the surface of the solid body, thereby causing vibrations in the solid body. The vibrations are detected using two or more of the optical vibration sensors. The relative phase(s) of the vibrations are used to determine information regarding the point of contact of the object on the surface of the solid body.

An input device comprises a plurality of optical vibration sensors mounted in a common housing. Each optical vibration sensor comprises a diffractive optical element; a light source arranged to illuminate the diffractive optical element such that a first portion of light passes through the diffractive optical element and a second portion of light is reflected from the diffractive optical element; and a photo detector arranged to detect an interference pattern generated by said first and second portions of light. The optical vibration sensor is configured so that in use, after the first portion of light passes through the diffractive optical element, the first portion of light is reflected from a reflective surface onto the photo detector. The input device is placed in contact with a surface of a solid body, and an object is brought into physical contact with the surface of the solid body, thereby causing vibrations in the solid body. The vibrations are detected using two or more of the optical vibration sensors. The relative phase(s) of the vibrations are used to determine information regarding the point of contact of the object on the surface of the solid body.

A method for determining a transformation between a first coordinate system of an ultrasonic haptic device and a second coordinate system of a visual sensor device. The method includes: triggering generation of an ultrasonic focal point; obtaining images depicting a body part of a user while the ultrasonic focal point is active; determining a position of the ultrasonic focal point in the second coordinate system when the body part of the user is in the ultrasonic focal point; repeating the triggering, obtaining and determining; and calculating a first transformation between the first coordinate system and the second coordinate system based on the positions of the ultrasonic focal points in the first coordinate system and the second coordinate system to thereby calibrate a relationship between the ultrasonic haptic device and the visual sensor device.

Various embodiments for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices are disclosed herein. In one example, an electronic device is provided with an optical detector that measures the distance between the electronic device and the wearer's forearm or hand, and when the distance is smaller than a threshold distance, the turns of the rotary input are false, unintended turns. In another example, a crown of a rotary input includes a plurality of capacitive sensors that detects the presence of a wearer's finger, which when absent, the turns of the rotary input are false turns. In another example, deflections or positions of a shaft of the rotary input are measured and if the deflections/positions indicate an upward force on the rotary input (which are likely caused by the wearer's forearm or hand), the turns of the rotary input are false turns. Other embodiments are described herein.