## 1 Introduction  
The popularity and use of fibre-reinforced composite materials have been growing year by year. The demand for composite materials tripled between 2010 and 2020 [1]. Aerospace, aviation, and energy applications have been the sectors with the largest share of both the volume produced and usage of composite materials. Currently, the COVID-19 pandemic has negatively affected certain sectors including aerospace [2] and the ground transportation industry. On the other hand, the energy sector has experienced significant growth. This growth is influenced by various factors, with one of the most significant factors being the widespread adoption of wind power in China, aligning with China's planned path towards carbon neutrality by 2060 [2, 3]. In the long term, the use of composites has grown within consumer goods and for the production of leisure equipment, with cycling, golf and fishing being the most prominent [3]. One of the reasons for using CFRP in many industries is to achieve high stiffness while maintaining low component weight [4]. Another important property of composite materials is good vibration damping, which in some applications leads to increased user comfort and reduced equipment noise. Researchers have been also dealt with hybrid composites reinforced by different types of fibres. [PERSON] et al. [5] found that the application of flax fibre-reinforced hybrid composites increases damping properties compared to pure carbon-reinforced composites. Despite the aforementioned benefits, the application of CFRPs in the production of sports optics or other optical instruments remains relatively rare. One of the primary obstacles hindering the adoption of composite materials in optical devices is the limited manufacturing precision of composite parts [6]. In some cases, limited impact resistance and the absence of plastic deformation are the main limitations [7]. In other cases, it may be necessary to consider outgassing parameters, which is currently a complex topic with limited knowledge in the context of composites [8]. However, some papers suggest that CFRP could find applications in space and cleanroom environments [9]. If these issues can be resolved, composite materials could offer numerous advantages for optical devices, namely, weight savings, better vibration damping, and improved dimensional stability. In some cases, they can also save on costs or enable the manufacturing of complex parts. Finally, composites possess a certain appeal to consumers, which, especially in the case of consumer goods, plays a crucial role in determining the product's commercial success. In particular, carbon fibre composite materials (CFRP) are considered premium and high-tech materials widely employed in aerospace and Formula 1. Under certain conditions, usage of CFRP as a construction material can result in cost savings compared to technologies like die-casting. Manufacturing precision and deformation elimination are key requirements for CFRP applications in optics. [PERSON] et al. [6] address the evaluation of deformation during the production of a composite tubular part made by curing prepregs in an autoclave with a prototype mold. There are several strategies to eliminate deformation during composite manufacturing [10]. Changing the mold shape for compensation does not require modification of the curing process or the lay-up, but entails the production of a new mold, as it is a trial-and-error approach. Another option is to utilize a numerical model introduced by [PERSON] et al. [11]. Optimization of curing is another strategy to eliminate deformations. Several authors [12; 13; 14] have studied the relationship between spring-back during curing and dwell time at the target temperature in the autoclave, with mixed results. However, there is consensus within the scientific community that lower deformation occurs in the laminate with slower heating and cooling rates [14; 15] as well as lower curing temperatures and longer curing times [12; 16], albeit with increased manufacturing costs.