SWITCH AND KEYBOARD PROVIDED THEREWITH
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United States of America Patent
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Issued Date -
Feb 12, 2015
app pub date -
Jul 17, 2014
filing date -
Aug 9, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided a switch having a wide, uniform luminance region. In the switch, light emitted from a light source is output through an outgoing surface located in an upper end surface of a light guide, the light being incident from an incident surface located in a lower end surface of the light guide arranged above the light source. A concave lens is formed in the incident surface of the light guide, and a microlens array is formed in the outgoing surface of the light guide.
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