摘要:
An optical system has, in order from an object: a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having negative refractive power; and a sixth lens having positive refractive power, wherein the following conditional expression (1) is satisfied: 1.52
摘要:
A zoom lens consists of, in order from an object, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power. Zooming is performed by changing respective distances between the first and second lens groups, the second and third lens groups, and the third and fourth lens groups. The first lens group consists of, in order from an object, a negative lens, a negative lens and a positive lens, the second lens group consists of five lenses, and the third lens group consists of a bi-concave negative lens.
摘要:
A zoom lens includes, in order from an object, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group. Zooming is performed by changing respective distances between the first and second lens groups, the second and third lens groups, and the third and fourth lens groups. The first lens group includes a negative lens disposed closest to the object, and a negative lens. Specified conditional expressions are satisfied.
摘要:
A zoom lens comprises, in order from an object, a first lens group (G1) having negative refractive power, a second lens group (G2) having positive refractive power, a third lens group (G3) having negative refractive power, and a fourth lens group (G4) having positive refractive power to satisfy the following conditional expression: 1.60
摘要:
A first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power are provided in order from an object. The first to fourth lens groups move on an optical axis so that zooming is performed by changing each distance between adjacent lens groups. The first lens group comprises, in order from the object, a negative lens arranged closest to the object, a negative lens and a positive lens, and when an air interval between the third and fourth lens groups in the wide-angle end state is denoted as D3T and an air interval between the third and fourth lens groups in the telephoto end state is denoted as D3T, the following condition is satisfied: 0.30
摘要:
An optical system (LS) has an aperture stop (S), and a negative lens (L73) disposed closer to the image side than the aperture stop (S) and satisfying the following conditional expressions.
摘要:
Provided is an optical system having, in order from an object, a positive first lens group (G1), an aperture stop (S) and a second lens group (G2), wherein the first lens group (G1) includes, in order from the object, a negative lens component (L1), a positive lens component (L2) and a first lens component (L3, L4), the image side surface of which is a concave surface facing the aperture stop (S), the second lens group (G2) includes, in order from the object, a second lens component (L5, L6), the object side surface of which is a concave surface facing the aperture stop (S), and a positive lens component (L8) disposed closest to the image, the first lens component (L1) and the second lens component (L2) face each other sandwiching the aperture stop (S), and the following conditional expressions (1) and (2) are satisfied: 1.5
摘要:
An optical system has, in order from an object: a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having negative refractive power; and a sixth lens having positive refractive power, wherein the following conditional expression (1) is satisfied: 1.52
摘要:
The present invention has, in order from an object: a first lens (L1) having negative refractive power; a second lens (L2), which is a positive meniscus lens having a convex surface facing the object; an aperture stop (S); and a third lens (L3) having a convex surface facing the object, and satisfies the following conditional expression (1): 6.6
摘要翻译:本发明的目的是从具有负屈光力的第一透镜(L1) 第二透镜(L2),其是具有面向物体的凸表面的正弯月形透镜; 孔径光阑(S); 和具有面向物体的凸面的第三透镜(L3),满足以下条件式(1):6.6 <| f12 / f | (1)其中f12表示第一透镜(L1)和第二透镜(L2)的复合焦距,f表示光学系统(WL)的焦距。
摘要:
Provided is an optical system having, in order from an object, a positive first lens group (G1), an aperture stop (S) and a second lens group (G2), wherein the first lens group (G1) includes, in order from the object, a negative lens component (L1), a positive lens component (L2) and a first lens component (L3, L4), the image side surface of which is a concave surface facing the aperture stop (S), the second lens group (G2) includes, in order from the object, a second lens component (L5, L6), the object side surface of which is a concave surface facing the aperture stop (S), and a positive lens component (L8) disposed closest to the image, the first lens component (L1) and the second lens component (L2) face each other sandwiching the aperture stop (S), and the following conditional expressions (1) and (2) are satisfied: 1.5