一、引言某些物质受到紫外线的照射以后,会产生荧光辐射,为了进一步研究与分析,就需要把荧光像记录下来。一般采用照相方法记录荧光像。由于荧光寿命短促,而且荧光的辐射强度又很低,所以采用照相法记录荧光像一定要在荧光寿命期的荧光峰值时刻拍照,并且要重复拍照多次才能在底片上取到满意的荧光像。因此,照相设备必须控制以下三个时间参数:第一,紫外线照射时间即光源对物的曝 I. INTRODUCTION After some substances are exposed to ultraviolet rays, they will produce fluorescent radiation. For further research and analysis, the fluorescent images need to be recorded. Photographic methods are generally used to record fluorescent images. Due to the short fluorescence lifetime and the low fluorescence intensity of the fluorescence, recording a fluorescence image with a photographic method must take a photograph at the fluorescence peak of the fluorescence lifetime and repeat the photographing several times to obtain a satisfactory fluorescence image on the film. Therefore, the photographic equipment must control the following three time parameters: First, the exposure time of the light source