| 摘要 |
The present invention provides an optical lens device capable of providing an optical pickup with a stable performance by restraining the influence of the birefringence even in the case of using a plurality of resin lenses. In the optical lens device having two lenses, by disposing the two lenses relative to each other such that the birefringence directions of the lenses form a predetermined angle, preferably 180 degrees, the influence of the birefringence can be reduced as a whole and an optical lens device with a good characteristic can be obtained.
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