This paper describes a new type of the slit of the optical spectrometer designed with the principle of Archimedes spiral,and presences some forms of structure and the calculation method,the result is satisfactory in the practical application

• 本文描述了光谱仪器的新型铗缝；采用阿基米德螺线原理设计；提出了多种结构形式和计算方法；在实际应用方面取得了满意的结果.