Table 1.

A comparison of the single-aperture, the apposition, and the superposition eye [24,25].

Parameter	Human	Bee	Moth	Shrimp Acetes Sibogae	Bibio Marci
Structure	Single aperture	Apposition compound	Refractive Superposition compound	Reflective Superposition compound	Neural superposition compound
Light habitat	Diurnal	Diurnal	Nocturnal	Nocturnal	Diurnal
Lens diameter (mm)	7	0.025	0.4	0.7	0.021
Focal length (mm)	23	0.06	0.17	0.3	0.07
Receptor diameter (um)	2	1.5	8	-	-
F-number (F/#)	3.3	2.4	0.4	0.4	0.6
Sensitivity (${\mathsf{\mu }\mathrm{m}}^2={10}^{-12}\mathrm{W}/\left(\mathrm{W}/{\mathrm{m}}^2\right)$)	0.23	0.24	218	0.327	0.2742–1.2611
Acceptance angle ($°$)	0.007	1.9	<13	5.6	2.0
Interreceptor angle d/f ($°$)	0.005	-	3	-	2.8
Interommatidial angle ($°$)	-	0.95	-	2.8	1.6
Resolution (LP/$°$)	100	0.52	>0.08	-	-

(-) means unknown.