卤化银感光材料的现状和未来以及学会的作用

接着以前的几篇文章，作者从光吸收、潜影形成效率、最小潜影中心的尺寸以及材料储存期的稳定性角度，分析了卤化银感光材料已达到的性能现状．潜影形成的效率取决于由吸收的光子产生的量子产率、敏化中心对电子的俘获和光电子与正空穴间的复合．可以肯定，感光材料的性能提高尚有很大的余地．依据上述的考察及其与静态数字照相的比较，可预测未来世界的卤化银感光材料生产的发展会趋缓．有一点应清楚，感光科学与技术彼此间已互动促进了许多年，生产出了高精细、高复杂的感光材料，此类科学与技术不是一些后来者能轻而易举超越的，而且它们所取得的各项进展无不依赖于感光科学和技术学会的种种活动．

THE PRESENT STATE AND FUTURE OF SILVER HALIDE PHOTOGRAPHIC MATERIALS AND ROLE OF SCIENTIFIC SOCIETIES

Following the formar papers,the author analyzed the present state of the capability of silver halide photographic materials from the viewpoints of light absorbace,the efficiency of latent image formation,the size of the smallest latent image center,and the stability during storage.The efficiency of latent image formation depends on the quantum yield of free electron generation by an absorbed photon,electron-trapping by sensitization centers,and recombination between a photoelectron and a positive hole.It was confirmed that there would be still considerable room for the improvement in the capability.On the basis of the above-stated examination and their comparison with digital still cameras,it has been predicted that the production of silver halide photographic materials will be slowly expanded in the world in future. It has been indicated that photographic science and technology have ever been interacted with each other for many years to form very fine and highly composite photographic materials,which have been hardly caught up by newcomers,and that their progresses have depended on the activities of societies of photographic science and technology.