3results about How to "Large divergence angle" patented technology

The utility model discloses a kind of laser module of emission irregular starry sky effect, belong to semiconductor laser application technical field, including laser window mirror, light-reflecting concave mirror, light-reflecting bowl, multi-mirror, light source driving board, laser light source module, power module, 512 public seat female seat, 512 subboard module, waterproof rubber pad, pressboard, waterproof joint, load lifting eye, mounting bottom plate, heat dissipation module, rear panel, front panel, product nameplate slot, boom connecting block, boom, shock pad foot and starry sky lamp cylinder, the light-reflecting concave mirror has light-reflecting concave, the light-reflecting bowl is spherical crown, and several plane mirrors are equipped in its light-reflecting concave, the light-reflecting bowl is parallel with multi-mirror and is obliquely arranged in the front of laser light source module, the utility model has the technical effect that irregular and dynamic change starry sky light spot can be generated, light utilization is high, structure is stable, installation is flexible and has good waterproof heat dissipation performance.

This application discloses a transmission-type high-power laser emitting system, relating to the technical field of high-power laser systems. The system's laser incident end is connected to a high-power fiber laser for receiving the laser beam, and its laser emitting end is used to focus the laser beam to a target location. The system includes a laser emitting mirror group, an emitting mirror tube, a focusing motor, and a control circuit board. The laser emitting mirror group is disposed inside the emitting mirror tube and includes a laser emitting eyepiece group and a laser emitting objective lens group. The laser emitting eyepiece group is located at the incident end, and the laser emitting objective lens group is located at the laser emitting end. The focusing motor is used to move the laser emitting eyepiece group through a mechanical connector to achieve system focusing. The control circuit board is used to control the focusing motor to rotate and focus according to a focusing signal. The technical solution of this application has a simple system structure, relatively high temperature stability, and can achieve directional focusing of a high-power laser beam over a long distance.

The application provides an optical path and a target red light photophthalmometer, and relates to the technical field of photophthalmometers.The optical path comprises an LED light source, a first light shielding element and a second light shielding element arranged in sequence along an optical path.The first light shielding element is provided with a first light transmission hole for narrowing light emitted by the LED light source into an object light spot.The distance between the second light shielding element and the first light shielding element is greater than the distance between the second light shielding element and an eye.The second light shielding element is provided with an imaging hole coaxial with the first light shielding element, the imaging hole is used for changing the object light spot into an image light spot in the form of pinhole imaging, and the divergence angle of the image light spot is smaller than the divergence angle of the object light spot.