top page >> Products >> Focus tester >> Viewer light box    Focus tester FNo. tester Flare ratio &Vignetting factor Measurement System Camera light metering distribution System Vignetting factor Measurement System Liquid crystal display chart system Viewer light box   Focus tester   -Viewer light box- Viewer (Light Source) VLB-2 Large-format A2 size viewer Long life and stability by Cold Cathode Fluorescent Lamp.No flickering by high frequency lighting(40KHz) Details Viewer (Light Source) VLB-3 Large-format A3 size viewer Long life and stability by Cold Cathode Fluorescent Lamp.No flickering by high frequency lighting(40KHz) The light source(Back light) for A3 size transmission type chart Details Viewer (Light Source) VLB-4 A4 size viewer Long life and stability by Cold Cathode Fluorescent Lamp.No flickering by high frequency lighting(40KHz) The light source(Back light) for A4 size transmission type chart Details Viewer (Light Source) VLB-155 A5 size viewer The power supply unit for five pieces 150x120mm Transparent type Light Source for lighting. Chart for the circumferences easy movement Details Viewer (Light Source) VLB-4W Two color-temperature changes5100K/3100K Long-life of 20,000 hours Flickerless type by stable high frequency lighting Details