Telemedicine quickly set off a wave of enthusiasm around the world with its convenience. But now there is a tendency that people treat telemedicine treat as a taxi. The patient and the doctor do not communicate the medical history, do not record the medical history, and the medical treatment becomes a hammer sale. This is very unfavorable for the construction of the medical system, and it has potential hidden dangers for the patients themselves. The following is the text. During this time, more people choose to work at home, shop online at home, and even see a doctor at home. Just last year, more than one million people chose to wait in their own homes to see a doctor instead of waiting in the clinic. Nowadays, telemedicine is considered to be one of the solutions to the problem of medical treatment for residents in rural areas with poor medical conditions. At the same time, telemedicine can reduce the burden on the existing hospitals from the beneficiaries of the 20 million affordable medical bill. It allows the patient to sit at home and enjoy the same medical treatment as a hospital. But the latest research shows that some people treat telemedicine services like Uber, and treat it as a service independent of the medical system. Doctors don't even know the patient's medical history, and the telemedicine process will not. is recorded. Such health care can lead to a rapid increase in overall costs. In April 2012, CalPERS Blue Shield launched a telemedicine project for 300,000 insurance policyholders, but the results were not satisfactory. During the one-and-a-half-year period of the project, 2943 people developed respiratory infections. Two-part people have a more coughing condition, they choose to go directly to the doctor, and the remaining third choose to pick up the phone and call a telemedicine Teladoc to seek medical help. It looks good, because some people use Teladoc, they avoid useless tests and reduce the average cost of medical care, but researchers at the public policy think tank RAND pointed out that during these 18 months, each Patient spending using Teladoc actually increased by $45. Lori Uscher-Pines, one of the authors of the study, said: "If the service is very convenient, then people will use the service and often use it as an add-on service."
We may have ever heard of the Bullet Fixed Focus Camera/ Fixed Focus Bullet Camera HD/ Bullet Fixed Focus Journal Camera/ Fixed Focus Bullet Camera IR/ Fixed Focus Bullet Surveillance Cameras/ Fixed Focus Analog Bullet Cameras, so what is the Bullet Fixed Focus Camera? We know that the Bullet refers to the camera shape, so what about the Fixed Focus? Actually, the Fixed Focus refers to a type of the camera lens. Today let me introduce the camera lens for you.
Fixed Focus Bullet Camera HD, Bullet Fixed Focus Journal Camera, Fixed Focus Bullet Camera IR, Fixed Focus Bullet Surveillance Cameras, Fixed Focus Analog Bullet Cameras SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com
The camera lens is the key equipment of the video system. The lens' quality (index) directly affects the overall index of the camera. The lens is equivalent to the lens of the human eye. As you know, if there is no lens, the human eye cannot see anything. That is to say, if there is no lens, then the output image of the camera will just be white without any clear image output; which is consistent with the principle of our home cameras.
Actually, there are many classifications for the camera lens. Today please let me introduce one classification for you---the classification according to the structure.
1. The fixed focus lens with the fixed aperture
The lens has only one focus adjustment ring that can be manually adjusted. Rotating the ring left and right can make the image on the CCD target surface clearest. There is no aperture adjustment ring, so the aperture cannot be adjusted, and the luminous flux entering the lens cannot be changed by changing the lens factors, but can only be adjusted by changing the illuminance of the shooting site. The structure is simple and the price is cheap.
2. The fixed focus lens with the manual iris
Compared with fixed focus lens with the fixed aperture, the fixed focus lens with the manual iris has an extra aperture adjustment ring. The aperture range is generally from F1.2 or F1.4 to fully closed, which can easily adapt to the illuminance of the shooting site, and the aperture adjustment is done manually. The illuminance is uniform and the price is cheap.
3. The fixed focus lens with the automatic iris
Compared with the fixed focus lens with the manual iris, the fixed focus lens with the automatic iris has an extra gear-driven micro motor on the iris adjustment ring, and a 3 or 4-core shielded wire is drawn from the drive circuit, then connected to the camera's automatic iris interface seat. When the luminous flux entering the lens changes, the charge generated by the CCD target surface of the camera changes accordingly, thenthe video signal level changes, and a control signal will be generated and transmitted to the automatic iris lens, so that the motor in the lens can perform the corresponding rotation to complete the task of resizing.
4.The electric zoom lens with the automatic iris
Compared with the fixed focus lens with the automatic iris, the electric zoom lens with the automatic iris two extra micro motors. One motor is connected with the zoom ring of the lens, and can control the focal length of the lens when it rotates; the other motor is connected with the focus ring of the lens, and it can complete the focus of the lens When it rotates with control from the former motor. However, due to the addition of two motors and an increase in the number of lens groups, the size of the lens has also increased accordingly.
All in all, it would be helpful to know about the camera lens if you want to know more about the Bullet Fixed Focus Camera and the whole video monitoring field.
