Figure 2
From: Experimental imaging properties of immersion microscale spherical lenses
Optical images of a semi-immersed microscale lens on a large object at different distance d.
(a) d = 0 μm, two virtual images are formed. (b) d = 3.1 μm, a virtual image (b-1) and a real image (b-2) are observed. Image b-3 is the image of the object. (c) d = 4.1 μm, a virtual image (c-1) and a real image (c-2) are observed. (d) SEM image of a semi-immersed microscale lens. The large object is fabricated with the 960 nm microspheres. The lens is semi-immersed in the SU-8 resist. The scale bar is 2 μm.
