## 1 Introduction
The advanced processing method with micro-textured diamond grinding wheels offers a highly efficient and competitive solution which converts a micro-texture into a micro-pattern on the ceramic surface [19; 20]. However, it is difficult to machine a precise wheel profile due to their wear-resistant characteristics. Thus, to obtain the desirable curve accuracy, the texturing process becomes very important for these wheels. The micro-abrasive water jet (MAWJ) machining method was aimed at realizing the grinding wheel's thermal nondamaging and efficient dressing. It has been presented in the previous research on dressing grinding wheels that this abrasive waterjet method can dress the grinding wheel efficiently and achieve the thermal nondamaging ablation of grinding wheel materials [21; 22]. Nevertheless, this method is infrequently used in dressing micro-textured grinding wheels. It is critical to use this method to obtain micro-textured on the grinding wheel. The result expresses that the wheel surface characteristics with high protrusion can be acquired when applying this method to dress the grinding wheel [23]. Therefore, MAWJ technology is considered a promising texturing method. The dwell time algorithm \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Technique** & **Advantages** & **Disadvantages** & **References** \\ \hline Glass moulding & Low cost, high repeatability & High-temperature requirements & [5; 6] \\ \hline Reactive ion etching & Good surface properties, high repeatability in the maskless process & High equipment costs and difficulty in processing due to the need for a mask & [7; 8] \\ \hline Photolithography & Produces microlenses over large areas & High cost due to need for master mould & [9; 10] \\ \hline Femtosecond direct & High accuracy and resolution & High cost due to expensive femtosecond laser & [11; 12] \\ \hline \hline \end{tabular}
\end{table} 
Table 1: The comparison of different manufacturing techniques for microlenses. calculation plays an essential role in obtaining the great precision profile of micro-textured wheels. The algorithm is based on the foundation that the intended material removal quantities are a convolution operation of dwell duration and removal function. Numerous algorithms have been designed for the development of sub-aperture optical manufacturing technology. Their removal functions mostly have a circular symmetrical distribution, including traditional pitch lap [24], stressed lap (S.L.) [25], reactive atom plasma [26], and ion beam figuring (IBF). It is based on the fundamental concept of Computer-Controlled Optical Surfacing (CCOS). The material-removal process is a 2D convolution of the spatial domain. Because of the previous surface profile inaccuracy and the influence function, the dwell time can be obtained by deconvolution [27]. The algorithms are primarily based on the discrete convolutional and linear equation models. Different models will inevitably result in different dwell-time algorithms. Therefore, the dwell time solution becomes the most important strategy for ensuring high-accuracy texturing diamond wheels. In this work, a sinusoidal microlens array was used to realize the uniform intensity distribution of optical systems. The parameters of the CMA and the corresponding homogenization performances were first simulated using the ray-tracing software ZEMAX. A novel method based on the combined rough-fine grinding process using MAWJ-textured diamond wheels is proposed to fabricate CMA on RB-SiC moulds. A linear matrix equation is studied to build a stable dwell time algorithm for wheel texturing. An MAWJ texturing experiment is taken to demonstrate the effectiveness of the algorithm. The grinding experiment on RB-SiC is carried out to analyze the profile accuracy and ground surface topography.