Novel high-luminous flux long-wave infrared athermalization camera lens
The utility model provides a novel high-luminous flux long-wave infrared athermalization camera lens. Three lenses are sequentially arranged on an optical axis from an object space to an image space, wherein the first lens is a falcate lens of which the convex surface faces an object side, the secon...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a novel high-luminous flux long-wave infrared athermalization camera lens. Three lenses are sequentially arranged on an optical axis from an object space to an image space, wherein the first lens is a falcate lens of which the convex surface faces an object side, the second lens is a lens having a negative refractive power, and the third lens is a lens of which the convex surface faces an image side, wherein the first lens has a positive refractive power, and the third lens has a positive refractive power; and the lenses satisfy the equation that 0 |
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