Table 1. List of optical lenses for the sample arm.

Item [Fig. 2(a)]	Part Number a	Quantity	Focal length (mm)	Diameter (mm)
L1	AC254-300-B	2	300	25.4
L2	AC254-125-B	2	125	25.4
L3	AC254-100-B	2	100	25.4
L4	AC254-100-B	2	100	25.4
L5	AC508-300-B	2	300	50.8
L6	AC508-300-B	1	300	50.8
	AC508-150-B	1	150	50.8
	AC508-100-B	1	100	50.8

^a All the listed part numbers were off-the-shelf lenses from the Thorlabs Inc., USA