Abstract: An off-axis light-emitting device and an image capturing module using the same are provided. The off-axis light-emitting device includes a substrate, a light-emitting chip, and an optical element. The substrate has a mounting surface, and the light-emitting chip for generating a light beam has a light output surface. The light-emitting chip is disposed on the assembly surface. The optical element is disposed on the assembly surface and includes a dome portion. The dome portion is arranged in an optical path of the light beam and extends in a first direction to form an elongated shape. The dome portion has a first reference plane that passes through two opposite side surfaces of the dome portion, and the first reference plane is offset from a geometric center of the light-emitting chip in a second direction, so that the light beam passing through the dome portion forms an off-axis projection light.

Abstract: An off-axis light-emitting device and an image capturing module using the same are provided. The off-axis light-emitting device includes a substrate, a light-emitting chip, and an optical element. The substrate has a mounting surface, and the light-emitting chip for generating a light beam has a light output surface. The light-emitting chip is disposed on the assembly surface. The optical element is disposed on the assembly surface and includes a dome portion. The dome portion is arranged in an optical path of the light beam and extends in a first direction to form an elongated shape. The dome portion has a first reference plane that passes through two opposite side surfaces of the dome portion, and the first reference plane is offset from a geometric center of the light-emitting chip in a second direction, so that the light beam passing through the dome portion forms an off-axis projection light.

Abstract: The present invention provides a light-emitting module, which comprises a light-emitting device, a light-guiding member, and an external light-guiding member. The light-emitting device emits light. The light-guiding member is disposed on the light-emitting path of the light-emitting module; the external light-guiding member is disposed on the light-emitting path of the light-emitting member. The light-guiding member distributes the light over the light-incidence surface of the external light-guiding member uniformly. After the external light-guiding member, the light is modified to axially symmetric light. Besides, the light-emitting device is disposed in a reflection ring, and a diffuser is disposed on the light-emitting path of the light-emitting device. When a minority of the light-emitting device fail, although the overall energy of the light source is reduced, the influence on the light emission of the light-emitting module is not significant.