Abstract: Semiconductor dies of a semiconductor die package are directly bonded, and a top metal region may be formed over the semiconductor dies. A plurality of conductive terminals may be formed over the top metal region. The conductive terminals are formed of copper (Cu) or another material that enables low-temperature deposition process techniques, such as electroplating, to be used to form the conductive terminal. In this way, the conductive terminals of the semiconductor die packages described herein may be formed at a relatively low temperature. This reduces the likelihood of thermal deformation of semiconductor dies in the semiconductor die packages. The reduced thermal deformation reduces the likelihood of warpage, breakage, and/or other types of damage to the semiconductor dies of the semiconductor die packages, which may increase performance and/or increase yield of semiconductor die packages.

Abstract: A fundus camera includes an objective lens, an illumination device, an imaging lens group and an image sensor. The illumination device has a light emitting position and includes a plurality of light emitting modules and a driving element. Each light emitting module generates a corresponding illumination light, and the optical characteristics of the illumination lights are different from each other. The driving element drives one of the light emitting modules to the light emitting position of the illumination device to output an illumination light with required optical characteristics and irradiate it to a fundus through the objective lens. The imaging light reflected by the fundus passes through the objective lens and the imaging lens group to form an image on the image sensor so as to generate a fundus image. The abovementioned fundus camera has a compact structure and can switch the illumination light sources in a short time to obtain fundus images with different optical characteristics.

Abstract: An improved swim fin comprises a foot-packet formation formed with a foot-receiving cavity, and a fin blade attached and extending longitudinally beyond the foot-packet formation to a trailing edge thereof for a substantial length. The fin blade has an imaginary center line splitting down the middle thereof to separate the same into two symmetric portions. The fin blade further comprises: at least a first movable member and at least a second movable member. Both of the movable members are triangular shaped. The first movable member is disposed on one of the two portions of the fin blade and is connected to the fin blade by a first connecting edge such that the first movable member can wiggle using the first connecting edge as pivot within a predefined angle. The second movable member is disposed on another portion of the fin blade and is connected to the fin blade by a second connecting edge such that the second movable member can wiggle using the second connecting edge as pivot within an predefined angle.

Abstract: An improved swim fin comprises a foot-packet formation formed with a foot-receiving cavity, and a fin blade attached and extending longitudinally beyond the foot-packet formation to a trailing edge thereof for a substantial length. The fin blade has an imaginary center line splitting down the middle thereof to separate the same into two symmetric portions. The fin blade further comprises: at least a first movable member and at least a second movable member. Both of the movable members are triangular shaped. The first movable member is disposed on one of the two portions of the fin blade and is connected to the fin blade by a first connecting edge such that the first movable member can wiggle using the first connecting edge as pivot within a predefined angle. The second movable member is disposed on another portion of the fin blade and is connected to the fin blade by a second connecting edge such that the second movable member can wiggle using the second connecting edge as pivot within an predefined angle.