Using for loop in tikz to draw repeated shapes

Question

I am trying to create a lenticular pattern like the one in the picture. I believe the repeated shape can be drawn using a for loop in tikz, but I wasn't able to get it done properly.

Appreciate any help on looping.

Edit: This is a part of a bigger diagram and below is the code.

\begin{document}
\begin{tikzpicture}[>={Stealth[inset=0pt,length=10pt,angle'=35,round]}]

\pgfmathsetmacro{\lensRadius}{6}
\pgfmathsetmacro{\lensHeight}{3}
\pgfmathsetmacro{\startAngle}{asin(\lensHeight/\lensRadius)}

\draw []  (0,\lensHeight)
arc[start angle=180-\startAngle,delta 
angle=2*\startAngle,radius=\lensRadius]node [below, align=center] {\\ 
[1em]Main\\[-1ex]lens}
arc[start angle=-\startAngle,delta angle=2*\startAngle,radius=\lensRadius]
-- cycle;

\draw [line width=1mm ] (-1.5,3) -- (-1.5,-3) node [below, align=center] {\\ 
[1em]Weak\\[-1ex]diffuser};

\draw []  (6,\lensHeight)
arc[start angle=180-\startAngle,delta 
angle=2*\startAngle,radius=\lensRadius]node [below, align=center] {\\ 
[1em]Field\\[-1ex]lens}
-- cycle;

\draw[] plot[only marks, mark=*,mark size=10pt,mark options={fill=Sepia}] 
coordinates{(-6.5,0)} node[below, align=center]{\\[1em]Object};
\draw[] (-6,0) -- (0,3);
\draw[] (-6,0) -- (0,-3);

\draw[] (6.5,0) -- (0,3);
\draw[] (6.5,0) -- (0,-3);

%lenticular pattern
\pgfmathsetmacro{\lensRadius}{0.2}
\pgfmathsetmacro{\lensHeight}{0.2}
\pgfmathsetmacro{\startAngle}{asin(\lensHeight/\lensRadius)}
\draw []  (8,\lensHeight)
arc[start angle=180-\startAngle,delta 
angle=2*\startAngle,radius=\lensRadius]; 
\draw [line width=0.25mm ] (8,3) -- (8,-3) -- (8.2,-3) -- (8.2,3) -- cycle;

\end{tikzpicture}
\end{document}

Output:

Answer 1

There are many possibilities to draw something like is, here is one of them.

\documentclass[tikz,border=3.14mm]{standalone}
\begin{document}
\begin{tikzpicture}[pics/rr/.style={code={\draw (0.2,-0.2) |- ++(-0.4,0.4)
to[out=180,in=180] ++ (0,-0.4) -- cycle;}}]
 \path foreach \X in {0,1,...,10}
 {(0,0.4*\X) pic{rr}};
 \draw (0.2,-0.2) rectangle (0.4,10*0.4+0.2);
\end{tikzpicture}
\end{document}