Light Transmitting Building Block (LTBB) is a building block with transparent rods embedded in it that allows transmission of light. It was recently granted a patent in 2020 in India and so, there is no further information available on its light-transmitting performance. The paper analyzes the data generated from the experiment performed in Patna, India on its light transmitting capacity for daylighting. Many factors are involved that have an impact on the light transmitting capacity of the LTBB (Model 1). Experiment for light transmittance were also carried out for the block without embedded transparent rods (Model 2) and compared with Model 1. It is found that light transmitting performance of Model 1 was significantly better than Model 2. Further, the requirement of the number of blocks of Model 1 was calculated for generating the recommended level of illumination for specific indoor activities through a software simulation using DIALux.

透光积木 (LTBB) 是一种积木，其中嵌入了透明棒，可让光线透过。它最近于 2020 年在印度获得了专利，因此没有关于其透光性能的进一步信息。本文分析了在印度巴特那进行的实验所产生的关于其对采光的透光能力的数据。影响LTBB（模型1）透光能力的因素很多。还对未嵌入透明棒的砌块（模型 2）进行了透光率实验，并与模型 1 进行了比较，发现模型 1 的透光性能明显优于模型 2。此外，