| 摘要 |
The disclosed photographic objective includes, from front to rear, a first lens of meniscus form convex toward the front and having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens of meniscus form which is concave toward the front and has a negative refractive power and whose front surface is aspheric, with the refractive power and configuration of each lens appropriately set to achieve compactness while permitting good correction of aberrations.
|
