30results about How to "Avoid direct injection" patented technology

The invention discloses a portable microscopic imaging device, which is detachably connected to portable imaging equipment (3) with a camera (31) and an illuminator (32). The portable microscopic imaging device comprises a lens (1) and a lens body (2), wherein the lens body (2) is made of transparent or semi-transparent solid materials, and the thickness of the lens body in a length direction is even; the outer surface of the front side (20b) of the lens body (2) is locally provided with an independent mirror surface reflection layer or a diffuse reflection layer to cover the illuminator (32);the mirror surface reflection layer or the diffuse reflection layer is made of light-proof materials and forms a sealed annular light transmission ring with the peripheral edge of the front side (20b) of the lens body (2); and the opening size of the mounting hole (21) of the lens body (2) on the front side (20b) of the lens body is greater than the size of the lens (1). Through the re-optimization design of the structure, the imaging device has the advantages of being small, light, convenient, easy in use, high in imaging quality and high in amplification factors.

The invention provides a high-temperature secondary electronic detector collection assembly. The high-temperature secondary electronic detector collection assembly comprises a standard secondary electronic detector collection assembly body and a light insulating sleeve which can block visible light and infrared light, wherein the standard secondary electronic detector collection assembly body is sleeved with the light insulating sleeve, one end of the light insulating sleeve is a port end suitable for being connected with a light guide pipe joint, and the other end of the light insulating sleeve is an electron inlet end. In the high-temperature secondary electronic detector collection assembly, the standard secondary electronic detector collection assembly body is sleeved with the light insulating sleeve which can block the visible light and the infrared light which are emitted by a sample at a high temperature so that the standard secondary electronic detector collection assembly body can be prevented from absorbing the visible light and the infrared light to generate white spots, and it is guaranteed that images generated by the standard secondary electronic detector collection assembly body can normally reflects changes of the surface of the sample at the high temperature. A high-temperature scanning electron microscope with the high-temperature secondary electronic detector collection assembly further comprises a thermal insulating objective lens protective assembly, and thermal radiation generated by the sample at the high temperature is prevented from affecting performance of a pole shoe below an objective lens.

The invention relates to a cooking device, which comprises a box body with a front opening and a door body covering the opening of the box body. The door body is composed of a middle door body and a side door body. The side door body is at least one parallel It is arranged on the left or right side of the middle door body, and the outer end of the side door body can be rotated outward relative to the middle door body to open the side door body. Compared with the prior art, the present invention first opens the side door at the end of cooking, and the hot air inside the cooking device can be discharged from back to front toward the left and / or right side of the door along the side of the door. Part of the hot air can effectively prevent the hot air from spraying directly to the user when the door is opened as a whole.

The application discloses a casing and an electronic device. The casing includes: a body capable of forming an accommodating space; wherein, the body includes: at least two partitions, and any adjacent two partitions have a an opening, so that there is an airflow path between the accommodation space and the outer space of the body; at least one blocking member is provided in the accommodation space corresponding to the opening, and is used to keep the airflow path while blocking light from passing through the The opening projects directly into the receiving space. The above-mentioned casing can block the user's sight while ensuring the normal circulation of gas, so that the user cannot see the accommodation space inside the body and the devices arranged in the accommodation space from the opening on the outside of the body, avoiding the leakage inside the casing. The exposure of space and components improves the appearance of the housing.

The invention discloses a high-stability optical fiber laser comprising a beam combiner arranged in a resonant cavity. The first conical section of the pumped fiber and the coupling region on the signal fiber are fused and coupled to form the beam combiner. The gain fiber in the resonant cavity absorbs the pump light transmitted by the pumped fiber into the resonant cavity through the beam combiner so as to form laser to be outputted. The beam combiner is arranged in the resonant cavity so that the excessively high power pump light can be prevented from being directly injected into the fiber grating, the stability of the laser can be enhanced and the single resonant cavity laser is enabled to output the laser of higher power. Compared with the end surface pump technology, the pump fiber and the side surface of the signal fiber are fused and coupled and the signal insertion loss is almost zero so that the pump efficiency can be greatly enhanced, the heat generated in coupling can be significantly reduced, the optical-to-optical conversion efficiency of the laser can be enhanced, high power output of the optical fiber laser can be guaranteed and the stability of the optical fiber laser can be further enhanced.

The invention provides a ventilator. The ventilator is characterized in that a diffuser (3) is installed on the inner side of a front panel (1), the diffuser (3) and the front panel (1) form a container (5), and a light-emitting part (4) is arranged in the container (5); the edge of a back panel (2) extends out an extending portion (21), an air inlet is formed between the front panel (1) and the edge of the extending portion (21), an air inlet channel is formed between the diffuser (3) and the extending portion (21), light emitted by the light-emitting part (4) reflects on the inner wall of the extending portion (21), and the reflected light is emitted from the air inlet. According to the ventilator, the air inlet channel is also an emitting channel of the reflected light of a light source, the air inlet channel and the emitting channel of the reflected light of the light source are combined to be one, the lighting light source is avoided from shooting in human eyes directly, and the experience of a user is improved.

A multifunctional mobile shed, comprising: the upper and lower bottom surfaces of the shed body are both circular, and ventilation holes are opened on the upper and lower side walls of the shed body, and the ventilation pipe passes through and is fixed at the ventilation hole. There are sheep beds spliced ​​in the shed, and the bed surface is located above the ventilation pipe at the lower part of the shed body. There is a ring door on the shed body, and slope steps are placed on the ground outside the ring door; The big top is in the shape of a round platform, its lower bottom is connected with the top surface of the shed body, the middle part of the upper bottom surface of the big top protrudes upwards from the neck, the upper part of the neck is covered with an umbrella-shaped spire, and the side wall of the neck is provided with ventilation holes; Both the roof and the walls of the shed consist of three layers, from the outside to the inside: a rainproof layer, an insulation layer and a protective layer. The invention avoids strong external light directly entering the shed by setting the ventilation pipe at the ventilation hole, thereby effectively reducing the light in the shed under the premise of ventilation, and providing necessary conditions for scientifically increasing the output of cashmere.