Analysis and Design of an Effective Light Interference Methane Sensor Based on Three-Dimensional Optical Path Model

Figure 3

(a) Optical path of the refracting prism in top view, (b) optical path of the triangular reflecting prism in top view, (c) optical path of the refracting prism in profile view, and (d) optical path of the triangular reflecting prism in profile view.

(a)

(b)

(c)

(d)