An optical module has a lens holder into which a lens array with three lenses and a diaphragm, for example, is inserted. The invention also relates to novel compositions that contain a nucleic acid complexed or conjugated with a nucleic acid binding molecule. The authenticity of the gaming software applications temporarily stored in RAM may be verified by using methods to compare it with certified gaming software stored on one or more local or remote file storage devices accessible to the master gaming controller on the gaming machine. Memory array units are grouped together in pairs on the die to form memory array groups. Image lag is prevented by placing a p\u2212 type doped region under the p+ type doped photodiode pinning layer and aligned with the opening.