4 results about "Peephole" patented technology

Assemblies, sensors, methods of attachment, communication networks, and operational processes of a door-mounted camera apparatus with two integrated camera modules, for use with a door's peephole viewer. Some embodiments include a door bracket for attaching the camera apparatus to the door using removable adhesive or embedded magnets. Embodiments may include a movable mirror assembly which may be operated by a hand or by electrically powered mechanical actuator. Some embodiments include a peephole viewer apparatus with integrated sensors. Embodiments can include a digital display for viewing the camera's video output. Some embodiments can include a wired or wireless external sensor module which may detect whether a person is present in front of the door.

The utility model relates to smelting equipment technical field, the utility model provides a kind of visual oxygen lance for blast furnace blow-in, it includes: oxygen lance shell, the middle part of oxygen lance shell is equipped with flow channel, the bottom end of oxygen lance shell is fixedly connected with the oxygen transmission pipe and compressed air transmission pipe communicated with flow channel;Feedback board, the middle part of feedback board is embedded with feedback lens, the edge of the side of feedback board close to oxygen lance shell is fixedly connected with multiple lock rods, the end of oxygen lance shell close to feedback board is equipped with quick-mounting assembly, quick-mounting assembly is used for cooperating lock rod positioning feedback board;Protective assembly, protective assembly is assembled in the side of feedback board away from lock rod. Through the above technical scheme, the technical problem that the peephole mirror is lacking in effective protective measures in the unused state in the prior art, when contacting with the peephole mirror outside, the peephole mirror is easily scratched, and is easily attached by dust, affects the clarity of peephole mirror is solved.

This utility model belongs to the field of door lock peephole technology, specifically relating to an overall structure of a door lock peephole, including: a smart lock and a peephole mechanism. A receiving groove for accommodating the peephole mechanism is provided on the top of one side of the smart lock. A rotating component rotatably connected to the bottom of the peephole mechanism is provided in the receiving groove. A driving component is provided between the top of the inner side of the peephole mechanism and the inner wall of the receiving groove. The driving component, based on its actuation, causes the peephole mechanism to be pushed outwards to expose itself or pulled inwards to hide itself on the rotating component. The rotating component includes a rotating seat with a rotating shaft, which is installed on the outer side of the bottom of the receiving groove. This utility model, through the addition of the rotating component, driving component, and peephole mechanism, allows the peephole mechanism to be hidden and stored in the receiving groove when not in use, thereby preventing dust from falling onto the peephole mechanism when it is not in use.

The utility model provides a kind of ultra-wide-angle cat eye door mirror, including first lens, second lens, third lens and fourth lens being sequentially arranged from object side to image side, first lens is the meniscus lens of negative optical power convex to object side, second lens is double-concave lens of negative optical power, third lens is double-concave lens of negative optical power, fourth lens is double-convex lens of positive optical power, the distance between the surface of first lens towards object side and image surface is door mirror length, when the door mirror length is 90mm-160mm, the field of view angle of the ultra-wide-angle cat eye door mirror is greater than 170 degrees.The ultra-wide-angle cat eye door mirror provided by the utility model can meet the clarity requirement of visual optical system when the length of door mirror is 90mm-160mm, so that the door mirror can be applied to door body of different thickness, and the compatibility is strong.