4results about How to "Small spot" patented technology

The application provides a full-angle laser combustible gas remote measuring device and a detection method, and relates to the technical field of combustible gas detection. The device comprises a remote measuring instrument body, a laser emitter, a lens group, a detector and an aperture assembly. The lens group reciprocally moves along the light transmission direction to adjust the waist position of the outgoing laser beam. The aperture assembly is arranged in the receiving light path and in front of the light entrance side of the detector, and comprises a plurality of aperture plates arranged in sequence. The aperture plates are provided with light transmission holes. The apertures gradually decrease in size along the direction away from the detector. The aperture plates are located in the waist area of the receiving light beam. When the lens group moves to different positions, the corresponding light transmission holes are driven to cut into the receiving light path. The farther the lens group is away from the laser emitter, the smaller the aperture of the cut-in light transmission hole. In the wide-area scanning, the large aperture is cut in to expand the receiving field of view. In the long-distance precision measurement, the small aperture is cut in to block stray light and improve the detection precision. The lens group moves synchronously to complete the waist adjustment and aperture switching, and adaptive switching of the two modes is realized.

This invention belongs to the field of optical communication technology, specifically providing a multi-film TOSA packaging structure, including a TO-CAN and an optical fiber adapter. The optical fiber adapter is installed at the cap end of the TO-CAN and forms a mirror cavity with the TO-CAN. A first collimating lens, a second collimating lens, and a filter are disposed within the mirror cavity. The first collimating lens, the filter, the second collimating lens, and the optical fiber port of the optical fiber adapter are arranged sequentially along the emission optical path of the TO-CAN. The filter is used to prevent reflected light from entering the TO-CAN or the optical fiber port. This multi-film TOSA packaging structure provided by this invention is highly integrated. The collimating lens converts the laser light output into parallel light, resulting in a small spot size, facilitating optical path transmission, and reducing energy loss. Through the cooperation of the collimating lens and the filter, reflected light in the optical path does not affect signal quality in the TOSA coaxial package, meeting specification requirements and achieving hermetic packaging.

The utility model relates to detection field, concretely is a kind of multi-angle, multi-posture visual inspection device based on special-shaped netted component, including detection bench and the visual inspection module of being used in conjunction with detection bench, the detection bench includes rotating platform fixed on positioning platform, and rotating platform is spaced apart and is provided with the detection seat for receiving and negative pressure adsorption material, and detection seat and visual inspection module plumb position correspond;Detection seat rotates with rotating platform to produce swing action, and rotating platform is also provided with rotating power source that rotates detection seat around its own axis is driven to rotate.This utility model makes the attitude of material be fixed after negative pressure stable adsorption material, improves the stability under repeated action, realizes the multi-angle visual inspection of material by the pitching action of rotating platform and the rotation of detection seat, realizes the multi-view visual inspection of material under multi-angle multi-posture, significantly improves the comprehensiveness and precision of material visual inspection.

The invention discloses a light source device and an optical imaging system. The first laser light source comprises a first laser module and a second laser module, the first laser module is used for generating first laser, and the second laser module is used for generating second laser. The second laser light source comprises a third laser module and a fourth laser module, the third laser module is used for generating third laser, and the fourth laser module is used for generating fourth laser. The first polarization light combination module is arranged on a light path where the first laser and the third laser are located and used for generating first mixed light. The second polarization light combination module is arranged on the light path where the second laser and the fourth laser are located and used for generating second mixed light. The wavelength light combination module is arranged on a light path where the first mixed light and the second mixed light are located. According to the light source device in the embodiment, light combination is conducted on multiple paths of laser in the mode that polarization light combination is conducted firstly and then wavelength light combination is conducted, light spots of finally generated emergent light can be small, and the design difficulty and hardware cost of elements in a follow-up light path are reduced.