Reflector for optical touch device and optical touch device using the same
A touch device, optical technology, applied in optics, optical components, reflective reflectors, etc., can solve the problems of high mold cost, consumption, shape does not meet requirements, etc., to reduce production cost, low cost, save mold cost effect
Inactive Publication Date: 2015-12-02
PIXART IMAGING INC
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
If the manufacturing method of injection molding is adopted, it is necessary to make molds of different sizes of reflectors according to different sizes of optical touch devices, so higher mold costs are required
In addition, if the manufacturing method of extrusion molding is adopted, the shape of the reflective column 143 after molding often does not meet the requirements.
For example, the apex angle θ1 of the reflective column 143 tends to be a circular arc angle rather than a right angle, thereby affecting the reflective effect of the reflective mirror 140
Method used
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[0033] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the reflection mirror for the optical touch device proposed according to the present invention and the use of the reflection mirror The specific implementation, structure, features and functions of the optical touch device are described in detail below.
[0034] Figure 4 It is a schematic top view of an optical touch device according to an embodiment of the present invention. see Figure 4 , the optical touch device 200 of this embodiment has a sensing area 201 and includes a light sensing module 210 , a light source module 220 and at least one mirror 230 . The light sensing module 210 and the light source module 220 are disposed beside the sensing area 201 , and the sensing range of the light sensing module 210 covers the mirror 230 . The light source mod...
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A reflective minor includes a reflective film, a light-transmitting base and a light-transmitting adhesive layer. The reflective film includes a first connection surface and a plurality of reflection structures opposite to the first connection surface. Each reflection structure protrudes away from the first connection surface. The light-transmitting base includes a light penetration surface and a second connection surface opposite to the light penetration surface. The light-transmitting adhesive layer is disposed between the reflective film and the light-transmitting base and connected to the first connection surface and the second connection surface. An optical touch device is also provided in the present invention. Thus, the reflective minor as well as the optical touch device are easy to be manufactured and accordingly have a lower production cost.
Description
technical field [0001] The present invention relates to an optical element and a touch device, and in particular to a mirror for an optical touch device and an optical touch device using the mirror. Background technique [0002] Touch devices have the advantage of being easy to operate, so they have been widely used in various electronic products in recent years, such as mobile phones, digital cameras, music players, tablet computers, satellite navigation devices, touch screens, and the like. Currently common touch devices include resistive touch devices, capacitive touch devices, and optical touch devices. Among them, optical touch devices have become more and more popular due to their advantages of better durability and lower cost. be valued. [0003] figure 1 It is a schematic structural diagram of an existing optical touch device. Please refer to figure 1 , the existing optical touch device 100 includes a light guide group 110 , a light emitting element 120 and a lig...
Claims
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IPC IPC(8): G02B5/126G06F3/042
CPCG06F3/0428G02B5/12
Inventor 陈晖暄赖鸿庆
Owner PIXART IMAGING INC