Patent ID: 7986601

Claim:
An optical storage medium comprising: a first half disc including a first injection molded substrate having a thickness of approximately 0.6 mm and having a first data pit pattern embossed in a side of the first injection molded substrate, a first reflective layer formed over the first data pit pattern, and a first cover layer formed over the first reflective layer; a second half disc including a second injection molded substrate having a thickness of approximately 0.6 mm and having a second data pit pattern embossed in a side of the second injection molded, a second reflective layer formed over the second data pit pattern, an intermediate layer disposed over the second reflective layer, a third reflective layer disposed over the intermediate layer and having a third data pit pattern embossed therein; and an adhesive layer bonding the first half disc to the second half disc such that a side of the first substrate not including the first data pit pattern faces a side of the second half disc including the third reflective layer, wherein the optical recording medium has a thickness in a range of 0.9 mm to 1.4 mm, the first data pit pattern is configured to be read by a laser having a wavelength in a range of 400 nm to 420 nm and the second data pit pattern and third data pit pattern are configured to be read by a laser having a wavelength in a range of 635 nm to 660 nm.