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Alps touts 'smallest' double-action push switch

Posted: 19 Jan 2007     Print Version  Bookmark and Share

Keywords:Alps Electric  action push switch  SPEE Series  mobile devices 

Alps Electric has announced that it will commence mass production of its horizontal-type, double-action push switch SPEE series this month.

The SPEE series has been developed for small mobile devices such as mobile phones with cameras and digital cameras. These devices can accommodate such auto-focus functions by means of its double-action mechanism: the first action, which involves lightly pressing the shutter button (the "first position"), determines the object being photographed; the second action takes the picture when the button is pressed down (to the "second position").

The SPEE series is the industry's smallest double-action push switch, measuring 4(W)-by-5(D)-by-1.22(H)mm. Being a horizontal type, the switch operates horizontally against the circuit board on which it is embedded. On recent mobile phones with high-resolution cameras, shutter buttons have increasingly been positioned on the side of the camera casings. This feature enables more stable picture shooting, allowing users to hold their mobile phones firmly with their both hands, in the same way as a digital camera. Using a vertical-type switch for a mobile phone with the shutter button on the side would require space to accommodate the switch's length and width as well as cause problems in making mobile phones even flatter. The horizontal motion against the circuit board and lower profile of the SPEE Series provide a solution that results in flatter mobile phone casings.

To satisfy user demands for a more realistic feel when operating the shutter, despite the small casing, the SPEE series provides a total travel of 0.9mm and an over travel of 0.19mm.

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