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Optical pointing device, and electronic apparatus provided with same

A technology of optical pointing and light source, applied in the direction of electrical digital data processing, structural components of portable computers, input/output process of data processing, etc., can solve problems such as inconvenience, and achieve the effect of reducing installation performance

Inactive Publication Date: 2012-09-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this way, the mobile information terminal has achieved high performance and has the same display function as a computer. Therefore, the input device of the previous mobile information terminal that used menu selection keys and other function keys as direction keys is no longer suitable for selecting information on the GUI. presents icons, etc., thereby causing inconvenience

Method used

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  • Optical pointing device, and electronic apparatus provided with same
  • Optical pointing device, and electronic apparatus provided with same
  • Optical pointing device, and electronic apparatus provided with same

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0030] according to Figure 1 ~ Figure 3 Embodiment 1 of the present invention will be described. figure 1 It is a cross-sectional view showing a schematic configuration of the optical pointing device 10 according to the first embodiment. Such as figure 1 As shown, the optical pointing device 10 of the present invention includes: a light source 2 for illuminating the subject 1; a light guide 6 that internally transmits scattered light from the subject 1; The imaging unit 7 that captures the image of the subject 1 emitted by the emitting unit 5 of 6. The light guide 6 makes scattered light from the subject 1 enter the incident part 3 , forms an image in the imaging part 4 , and emits the scattered light from the outgoing part 5 .

[0031] figure 1 In FIG. 2 , the subject 1 and the light guide 6 are shown separately for simplicity of description. However, when the optical pointing device 10 is used, the subject 1 is in contact with the upper surface of the light guide 6 . ...

Embodiment approach 2

[0056] according to Figure 4 ~ Figure 6 Embodiment 2 of the present invention will be described. Figure 4 It is a cross-sectional view showing a schematic configuration of the optical pointing device 20 according to the second embodiment. The optical pointing device 20 is different from Embodiment 1 in that light is reflected and imaged in a direction opposite to the light guiding direction (the negative direction of the y-axis) through the imaging unit 4 provided inside the light guide 6 . Hereinafter, descriptions of the same configurations in Embodiment 2 as those in Embodiment 1 will be omitted.

[0057] in addition, Figure 4 Among them, the subject 1 in contact with the upper surface of the light guide body 6 refers to a subject such as a fingertip, and is an object whose motion is to be detected by the optical pointing device 20 . Here, in order to make the state of the subject 10 relative to the optical pointing device 20 easy to understand, the subject 10 is show...

Embodiment approach 3

[0086] according to Figure 7 and Figure 8 (a) to (c) describe Embodiment 3 of the present invention. Figure 7 It is a cross-sectional view showing a schematic configuration of the optical pointing device 30 according to the third embodiment. Hereinafter, descriptions of the same configurations in Embodiment 3 as those in Embodiments 1 and 2 are omitted.

[0087] Such as Figure 7 As shown, in the optical pointing device 30 of this embodiment, the scattered light (light L) of the subject 1 incident from the incident part 3 of the light guide body 6 passes through the diffraction element 9b, and is directed toward the light direction, that is, the positive direction of the y-axis. direction reflection. That is, the optical pointing device 30 of this embodiment is different from Embodiments 1 and 2 in that the diffraction element 9b is used as the optical path conversion unit. Such as Figure 7 As shown, the diffractive element 9 b is located above the light source 2 and...

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Abstract

The invention provides an optical pointing device, and an electronic apparatus provided with same. In order to achieve an optical pointing device that is ultra-thin and has excellent assembly characteristics by means of reducing the number of components, the disclosed optical pointing device (10) is provided with: a light source (2) that radiates light to a subject (1); a light guide (6) that has an image-forming unit (4)-which forms an image from scattered light from the subject (1)-and that propagates the scattered light from the subject (1) therewithin; and an imaging unit (7) that images the scattered light from the subject (1) emitted from the light guide (6). Also, the light guide (6) is such that, in the light path until the light rays (L) from the subject that enter therewithin are emitted to the outside of the light guide (6), the light rays (L) are guided without passing through air.

Description

technical field [0001] The present invention relates to an input device, in particular to an optical pointing device that can be mounted on a mobile information terminal such as a mobile phone, and electronic equipment equipped with the optical pointing device. Background technique [0002] In small electronic devices represented by mobile information terminals such as mobile phones and PDAs (Personal Digital Assistants: Personal Digital Assistants), a small keyboard is generally used as a user interface for inputting information. A keypad is generally composed of a plurality of buttons and direction buttons (cross keys) for inputting numbers and characters. In recent years, as the display unit of a mobile information terminal can present graphics and the like, a GUI (Graphical User Interface) using a display unit two-dimensionally is mainly used as a display method for displaying information to a user. [0003] In this way, the mobile information terminal has achieved high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/033G06F3/0354
CPCG06F3/042G06F1/1616G06F3/03547G06F1/169
Inventor 野吕哲史三宅隆浩三木炼三郎
Owner SHARP KK