OPTICAL MEMBER AND OPTICAL PICKUP USING THE SAME

摘要

PURPOSE: To obtain a beam splitter capable of ensuring flatness with a high degree of accuracy at a low cost. CONSTITUTION: A slit 3 is formed in a resin member 2 and a glass sheet 5 is inserted into the slit 3. A half reflective film 6 has been formed on one face of the glass sheet 5 and both sides of the glass sheet 5 are held by holding projections 4a, 4a, 4b and 4b formed in the slit 3. An air layer 7 formed between the resin member 2 and the glass sheet 5 is filled with an adhesive 8.