Abstract: The present invention relates to an integrated connector and a heat exchanger including the same, in which a connector main body is formed by pressing one pipe, a cap is press-fitted into the connector main body, such that the integrated connector is formed so that an interior of the connector main body is blocked by the cap. Therefore, the number of components used to manufacture a connector, which connects and securely couples a header tank and a gas-liquid separator, may be reduced, the integrated connector may be easily manufactured, and a brazing defect may be reduced at portions where the integrated connector is joined to the header tank and the gas-liquid separator of the heat exchanger.

Abstract: A lens optical system includes a first lens group in which a first lens of an object side is composed of a meniscus lens having a negative refractive power, and having a positive refractive power as a whole, a second lens group arranged at an image side I than the first lens group, the second lens group being a focusing group for correcting a change in image distance depending on a change in object distance, being composed of two or less lenses, and having a positive refractive power as a whole, and a third lens group arranged at the image side I than the second lens group, the third lens group having a negative refractive power as a whole, in which a first lens of the image side I is composed of a concave or meniscus lens.