Endomicroscopy - Biomedical Optical Imaging Technologies: Design and Applications - page 278

Transmission through 10mm [%]

100

80

60

40

PMMA
PS
E48R

20

200

400 600 800

Wavelength [nm]

1000 1200 1400 1600

Fig. 8.15 Transmission for three common optical plastic materials: PMMA, PS, and Zeonex [ 60 ]

1.2

1

0.8

0.6

0.4

0.2

0

0 100 200 300

Lateral Field fof View [ m m]

400 500

Fig. 8.16 A graphical summary of the data listed in Tables 8.5 and 8.6 . field-of-view (FOV) size,
NA, and the outer lens diameter are presented. The size of the circle represents each objective's OD.
GRIN and hemispherical lens-GRIN assemblies are denoted with red , while compound miniature
lenses are plotted in blue

Note that lenses 5 and 7 (Table 8.6 ,Fig. 8.13 ) were not discussed in detail due to
limited design data.
A graphical summary of the data listed in Tables 8.5 and 8.6 is presented
in Fig. 8.16 . The graph shows a map of field-of-view size, NA, and the outer
objectives diameter after assembly (the size of the circle represents each objective's
OD). GRIN and hemispherical lens-GRIN assemblies are denoted with red, while
compound miniature lenses are plotted in blue. An obvious trend can be noticed;
GRIN lenses are significantly more compact; however, they usually provide smaller
FOV for equivalent NA. In addition for higher NA they often work with shorter
working distance. Multi-lens systems have larger diameters but also offer a more