MICRO-ASPHERIC PLASTIC LENS SYSTEM FOR CAMERA PHONE

摘要

PURPOSE: A micro-aspheric plastic lens system for camera phone is provided to reduce the manufacturing cost by reducing the total size of the micro-aspheric plastic lens system. CONSTITUTION: A micro-aspheric plastic lens system for camera phone includes a diaphragm, a first lens, and a second lens. The diaphragm(30), the first lens(32), and the second lens(34) are sequentially arranged from an object to an image surface. A predetermined relational expression such as 0.39 <P1/P0<0.83 and 0.27 <P2/P0<0.75 is satisfied between the first lens and the second lens where P0 is total power of the first and the second lenses, P1 is power of the first lens, and P2 is power of the second lens. An angle of incidence theta p to the image surface of main beam is between a range of 15 to 25 degrees.