Miniaturized optical particle detector

A device, comprising:

• a particle detector including:
• a first half-shell including:
• a first half-chamber;
• and
• a first half-cantilever wall;
• a second half-shell coupled to the first half-shell, the second half-shell including:
• a second half-chamber abutting the first half-chamber;
• and
• a second half-cantilever wall abutting the first half-cantilever wall;
• and
• a reflecting body between the first half-shell and the second half-shell, the reflecting body including a reflecting surface having a first reflecting curved region and a second reflecting curved region.

A device, comprising:

• a particle detector including:
• a first half-shell including a first half-cantilever wall;
• a second half-shell abutting the first half-shell, the second half-shell including a second-half cantilever wall abutting the first half-cantilever wall;
• and
• a lid coupled to the first half-shell and the second half-shell, the lid including a reflecting surface including a first reflecting curved region and a second reflecting curved region.