Photographing lenses and photographing apparatus

An plurality of photographing lenses arranged in a direction from an object side to an image side, the plurality of photographing lenses comprising:

• a first lens having a positive refractive power and a convex object-side surface;
• a second lens having a negative refractive power and a flat surface facing the object side or the image side;
• a third lens having a positive refractive power;
• a fourth lens having a negative refractive power and a meniscus shape concave toward the object side;
• and
• a fifth lens which is concave toward the image side in a region around an optical axis of the photographing lenses,
• wherein the first lens to fifth lens are sequentially arranged in a direction from the object side to the image side, and
• the photographing lenses satisfy the following formulas:
• V1−V2>25
• F5/F<−1.5 <Formula>
• wherein F denotes a focal length of the photographing lenses, F5 denotes a focal length of the fifth lens, V1 denotes an Abbe number of the first lens 1, and V2 denotes an Abbe number of the second lens.

A plurality of photographing lenses arranged in a direction from an object side to an image side, the plurality of photographing lenses comprising:

• a first lens having a positive refractive power;
• a second lens having a negative refractive power and a concave image-side surface;
• a third lens having a positive refractive power and a meniscus shape convex toward an image side;
• a fourth lens having a negative refractive power and a meniscus shape concave toward an object side;
• and
• a fifth lens having a negative refractive power and an inflection point on at least one of an object-side surface and an image-side surface of the fifth lens,
• wherein the first lens to fifth lens are sequentially arranged in a direction from the object side to the image side, and
• the arrangement of photographing lenses satisfies the following formulas:
• −0.5<R1/R2<−0.15
• 0.8<F/R4<1.7 <Formula>
• wherein R1 denotes a radius of curvature of an object-side surface of the first lens, R2 denotes a radius of curvature of an image-side surface of the first lens, F denotes a focal length of the photographing lenses, and R4 denotes a radius of curvature of the image-side surface of the second lens.

A photographing apparatus comprising:

• a plurality of photographing lenses arranged in a direction from an object side to an image side;
• and
• an image sensor configured to receive light through the photographing lenses and convert the light into an electric image signal,
• wherein the plurality of photographing lenses comprise:
• a first lens having a positive refractive power and a convex object-side surface;
• a second lens having a negative refractive power and a flat surface facing an object side or an image side;
• a third lens having a predetermined refractive power;
• a fourth lens having a negative refractive power and a meniscus shape concave toward the object side;
• and
• a fifth lens which is concave toward the image side in a region around an optical axis of the photographing lenses,
• wherein the first lens to fifth lens are sequentially arranged in a direction from the object side to the image side, and
• the photographing lenses satisfy the following formulas:
• V1−V2>25
• F4/F<−2 <Formula>
• wherein V1 denotes an Abbe number of the first lens, V2 denotes an Abbe number of the second lens, F denotes a focal length of the photographing lenses, and F4 denotes a focal length of the fourth lens.