PURPOSE: A magnification variable form pan-focus lens is provided to miniaturize the size of the lens by improve resolving power amount a subject. CONSTITUTION: A first lens(110) has the negative refractive power. A second lens(120) is arranged from the first lens has the negative refractive power. A third lens(130) is arranged from the second lens and the negative refractive power. An aperture(180) blocks the incident light from the third lens. A plastic resin of the aspheric shape is welded in the upper surface direction while a fourth lens(140) has the positive refractive power. A fifth lens(150) is arranged from the fourth lens and the positive refractive power.
