Optical touch device and light source assembly

A light source assembly of an optical touch device, comprising:

• a linear light source disposed next to a side of a sensing area of the optical touch device;
• and
• a light penetration and reflection component disposed between the first linear light source and the side, the light penetration and reflection component comprising a substrate and a light penetration and reflection structure disposed on the substrate, the light penetration and reflection structure comprising a plurality of prime pillars protruding from a surface, opposite to the first linear light source, of the substrate and thereby forming a plurality of reflection regions and a plurality of light penetration regions, the prism pillars each being configured to have a length direction parallel to the side, each prime pillar comprising at least a reflection surface, the reflection surfaces being included in the reflection regions.

A light source assembly of an optical touch device, comprising:

• a linear light source disposed next to a side of a sensing area of the optical touch device;
• and
• a light penetration and reflection component disposed between the linear light source and the side, the light penetration and reflection component comprising a plurality of optical micro-structures, each optical micro-structure comprising a top portion, a bottom portion and at least a reflection surface, the top portion being configured to be opposite to the linear light source, the reflection surface(s) being configured to be connected between the top portion and the bottom portion, at least one of the top portion and the bottom portion comprising a flat region, each reflection surface being configured to be titled relative to the flat region(s).