Table 2. Summary of the lens evaluation.

	Silicon kinoform lens						SU-8 prism lens
	Short	Medium	Long	Short	Medium	Long	No. 1	No. 2	No. 3
	(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)
Peak width (FWHM) (µm)	13.0†	14.3†	11.9†	11.6†	11.8†	14.7†	12.0‡	13.1‡	13.9‡
Focal length (mm)	724	724	724	723	724	726	705	729	729
Effective aperture§ (mm)	0.24	0.20	0.15	0.19	0.17	0.25	0.85	0.79	0.74

^†The horizontal gap for slit A was 1.0 mm.

^‡The horizontal gap for slit A was 2.0 mm.

^§See text.