42results about How to "Expand the divergence angle" patented technology

The utility model relates to a three-fold light supplement bookmark based on grating diffraction, which comprises two main boards and a conductive copper foil belt, the two main boards are designed in a folding mode, the end portions of the main boards are provided with supporting boards in a folding mode, one main board is provided with a button cell, the other main board is provided with a magnetic sheet, one end of the conductive copper foil belt is connected with the button cell, and the other end of the conductive copper foil belt is connected with the magnetic sheet. One end of the main board is connected with a conductive copper foil belt, the other end of the main board is arranged on a magnetic sheet, the conductive copper foil belt is connected with a patch LED lamp, the patch LED lamp is arranged on one of the main boards and is provided with a grating plate in a matched mode, the magnetic sheet is attracted to a button cell after the two main boards are folded, and the positive electrode and the negative electrode of the button cell are conducted through the conductive copper foil belt to supply power to the patch LED lamp. The three-folding design concept is innovatively adopted, grating diffraction illumination and three-folding are designed in an integrated mode, and the three-folding grating diffraction illumination device has the advantages that the illumination range is enlarged, illumination is uniform and not dazzling, and use is flexible and convenient.

The utility model relates to the technical field of medical instruments, and discloses a drainage liquid real-time monitoring and early warning device based on a near infrared spectrum technology, which comprises a shell used for being fixed on a drainage tube and adopting a telescopic structure; the light source emitting module is arranged on the shell and used for emitting near-infrared light to the drainage liquid in the drainage tube; the photoelectric detection module is arranged on the shell, is opposite to the light source emitting module and is used for detecting an optical signal of the near-infrared light after passing through the drainage liquid; the relative distance between the light source emitting module and the photoelectric detection module is adjusted through a telescopic structure; and the control module is electrically connected with the light source emission module and the photoelectric detection module, and is used for receiving the light signal and triggering an early warning signal when the light signal is abnormal. The device can monitor the concentration and quality of liquid components in drainage liquid in real time, automatically monitor the state of the drainage liquid and automatically give an early warning when the drainage liquid is abnormal, so that the problem of careless omission caused by manual monitoring is avoided.