1-13. (canceled)
14. A lens module, comprising:
a first lens having positive refractive power and being convex toward an object side;
a second lens having negative refractive power and being convex toward the object side and concave toward an image side;
a third lens having positive refractive power and being concave toward the object side and convex toward the image side;
a fourth lens having negative refractive power and being concave toward the object side and convex toward the image side; and
a fifth lens having a refractive power and comprising:
an object-side surface being convex in the center and concave at the periphery; and
an image-side surface being concave in the center and convex at the periphery,
wherein:
at least one inflection point is formed on the object-side and image-side surfaces of the fifth lens,
the third and fourth lenses have a meniscus shape, and
the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from the object side toward the image side.
15. The lens module of claim 14, wherein the first lens is concave toward the image side.
16. The lens module of claim 14, wherein an Abbe number of the second lens is 20 to 30.
17. The lens module of claim 16, wherein an Abbe number v1 of the first lens and an Abbe number v4 of the fourth lens satisfy the following conditional expression:
20<v1\u2212v4<40.
18. The lens module of claim 14, wherein a focal length f2 of the second lens and a focal length f3 of the third lens satisfy the following conditional expression:
3.0<f3f2<\u22120.3.
19. The lens module of claim 14, wherein a focal length f2 of the second lens and a focal length f3 of the third lens satisfy the following conditional expression:
\u22121.49\u2266f3f2\u2266\u22120.59.
20. The lens module of claim 14, wherein a distance TL from an object-side surface of the first lens to an image sensor and an overall focal distance f of the lens module satisfy the following conditional expression:
0.5<TLf<2.0.
21. The lens module of claim 14, wherein the second lens, the third lens, the fourth lens and the fifth lens are made of plastic.
22. The lens module of claim 21, wherein the first lens is made of plastic.
23. The lens module of claim 14, wherein the first and second lenses comprise at least one aspherical surface.
24. The lens module of claim 14, further comprising an aperture disposed in front of the first lens.
25. The imaging lens of claim 14, wherein a focal length of the second lens is greater than a focal length of the fourth lens, and a focal length of the third lens is greater than the focal length of the second lens.
26. The imaging lens of claim 25, wherein a focal length of the first lens is greater than the focal length of the second lens and shorter than the focal length of the third lens.
27. The imaging lens of claim 14, wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the second lens, a radius of curvature of the object-side surface of the fifth lens is greater than a radius of curvature of the image-side surface of the fifth lens, and a radius of curvature of an object-side surface of the fourth lens is greater than a radius of curvature of an image-side surface of the fourth lens.
28. The imaging lens of claim 27, wherein a radius of curvature of an image-side surface of the first lens is greater than a radius of curvature of an object-side surface of the first lens.
29. The imaging lens of claim 25, wherein the third and fourth lenses are thicker than the second lens, and the first lens is thicker than the fourth lens.
30. The imaging lens of claim 29, wherein the first lens is thicker than the third lens, and the fifth lens is thicker than the first lens.
31. A lens module, comprising:
a first lens having positive refractive power and being convex toward an object side and concave toward an image side;
a second lens having negative refractive power and being convex toward the object side and concave toward the image side;
a third lens having positive refractive power and being concave toward the object side and convex toward the image side;
a fourth lens having negative refractive power and being concave toward the object side and convex toward the image side; and
a fifth lens having refractive power and comprising:
an object-side surface being convex in the center and concave at the periphery; and
an image-side surface being concave in the center and convex at the periphery,
wherein:
at least one inflection point is formed on the object-side and image-side surfaces of the fifth lens,
the third and fourth lenses have a meniscus shape, and
the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from the object side toward the image side.
32. The lens module of claim 31, wherein an Abbe number v2 of the second lens satisfies the following conditional expression:
v2<40.
33. The lens module of claim 31, wherein an Abbe number of the second lens is 20 to 30.
34. The lens module of claim 33, wherein an Abbe number v1 of the first lens and an Abbe number v4 of the fourth lens satisfy the following conditional expression:
20<v1\u2212v4<40.
35. The lens module of claim 31, wherein a focal length f2 of the second lens and a focal length f3 of the third lens satisfy the following conditional expression:
\u22123.0<f3f2<\u22120.3.
36. The lens module of claim 31, wherein the focal length f2 of the second lens and the focal length f3 of the third lens satisfy the following conditional expression:
\u22121.49\u2266f3f2\u2266\u22120.59.
37. The lens module of claim 31, wherein a distance TL from an object-side surface of the first lens to an image sensor and an overall focal distance f of the lens module satisfy the following conditional expression:
0.5<TLf<2.0.
38. The lens module of claim 31, wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are made of plastic.
39. The lens module of claim 31, wherein the first and second lenses comprise at least one aspherical surface.
40. The lens module of claim 31, further comprising an aperture disposed in front of the first lens.
41. The imaging lens of claim 31, wherein a focal length of the second lens is greater than a focal length of the fourth lens, a focal length of the first lens is greater than the focal length of the second lens, and a focal length of the third lens is greater than the focal length of the first lens.
42. The imaging lens of claim 31, wherein a radius of curvature of an image-side surface of the first lens is greater than a radius of curvature of an object-side surface of the first lens, a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the second lens, a radius of curvature of an object-side surface of the fourth lens is greater than a radius of curvature of an image-side surface of the fourth lens, and a radius of curvature of the object-side surface of the fifth lens is greater than a radius of curvature of the image-side surface of the fifth lens.
43. The imaging lens of claim 31, wherein the third and fourth lenses are thicker than the second lens, the first lens is thicker than the third and fourth lenses, and the fifth lens is thicker than the first lens.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A termiticide composition comprising i) bifenthrin and ii) acetamiprid.
2. A composition according to claim 1, wherein the composition contains from 0.0001% by weight to 0.3% by weight of bifenthrin and from 0.0001% by weight to 0.3% by weight of acetamiprid.
3. A composition according to claim 1, wherein the composition contains from 0.001% by weight to 0.06% by weight of bifenthrin and 0.01% by weight to 0.1% by weight of acetamiprid.
4. A composition according to claim 1, wherein the composition contains from 0.03% by weight to 0.06% by weight of bifenthrin and 0.0125% by weight to 0.1 % by weight of acetamiprid.
5. A method for controlling termites, comprising applying a termiticidally effective amount of a composition of claim 1 to a locus where termite control is needed or is expected to be needed.
6. A method according to claim 5, wherein said locus is selected from a termite-infested structure, a structure that is expected to be termite-infested, or a location adjacent to said structures.