15 the monolithic optical system comprises optical components including reflective prisms 16 17 18 and 19 support prisms 20 21 and 22 a converging lens 23 a ring shaped aperture 24 and a beam splitter 25 and cmos image sensor 15 all the optical components and cmos image sensor are fixed with each other by optical contact bonding or glue cement during measurement the led flash light 14 or additional separated led works as the light source of the optical measurement head the light beam emitted from the led flash light 14 is redirected by the reflective prisms 16 17 and 18 and goes along the optical axis 27 inside the monolithic optical system a converging lens 23 converts the light beam from the light source into the desired beam which is reflected by a beam splitter 25 and is projected onto surface 26 of the lens or mold to be measured the light beam reflected from surface 26 goes through the beam splitter 25 a ring shaped aperture 24 and is then reflected by a reflective prism 19 to be projected onto the cmos sensor 15 to form an image the image is analyzed by the smart mobile phone and the surface power of the local surface where the lens support contacts is calculated and displayed on the display screen of the smart mobile phone in one embodiment of the present invention the lens support includes a polished ruby stainless steel or sapphire ring to contact the lens surface in order not to damage the surface to be measured in a further.