| 摘要 |
PURPOSE:To reduce the costs of production by using at least one piece of combined lenses, forming a multilayered film filter of regulated color sensitivity on the adhered surface of the combined lenses and forming these to one body, thereby forming the multilayered film filter with soft coating. CONSTITUTION:This invention relates to an image-forming lens 4 for copying macines using a selenium photoreceptor 7 or the like. An image-forming lens 4 is obtained by combining two sets of combined lenses 40, 41 and two sets of single lenses 42, 43. The combined lenses 40, 41 consist of two pieces of lenses 40A, 40B and 41A, 41B, and have adhered surfaces A, B. For example, ZnS or the like is soft-coated as a color sensitivity regulated filter F on the surface A. Since the filter is provided on the combined surfaces of the lenses in such a way, the need for hard coating is eliminated and the efficiency of production is improved. |
