Car 360 degree panoramic camera Some high-end cars are equipped with cameras on the right rear-view mirror and front, which are displayed on the navigation screen. Both xinxiaoke and Dongfeng nazhijie are highlighting this panoramic camera. I heard that Lifan 720 is original, and my corolla has been hung in front several times. I want to install one, but the 4S shop doesn't have one, and the decoration shop doesn't have one. Please help me with the refitting expert. Thank you very much!

Car 360 degree panoramic camera Some high-end cars are equipped with cameras on the right rear-view mirror and front, which are displayed on the navigation screen. Both xinxiaoke and Dongfeng nazhijie are highlighting this panoramic camera. I heard that Lifan 720 is original, and my corolla has been hung in front several times. I want to install one, but the 4S shop doesn't have one, and the decoration shop doesn't have one. Please help me with the refitting expert. Thank you very much!

The reason is very simple. The lens refracts into a real image. The real image needs to be projected onto a plane to be sensitized and recorded. The image and object are on both sides of the lens. Where does the 360 lens make the image?
Fish eye lens with 180 degree angle of view can achieve the vision equivalent to "hemisphere", which can be used by monitors on the roof of office buildings and elevators

A school is going to organize 290 students to carry out field investigation activities, with a total of 100 pieces of luggage. The school plans to rent 8 cars of type A and type B. It is understood that each car of type a can carry up to 40 people and 10 pieces of luggage, and each car of type B can carry up to 30 people and 20 pieces of luggage. (1) set up x cars of type A, please help the school design all possible car rental schemes; (2) If the rental fee of car a and car B is 2000 yuan and 1800 yuan respectively, please choose the most economical one

(1) By renting x cars of type A, then renting (8-x) cars of type B. from the question meaning: 40x + 30 (8 − x) ≥ 29010x + 20 (8 − x) ≥ 100, the solution is: 5 ≤ x ≤ 6. That is, there are two kinds of car rental schemes: scheme 1: renting 5 cars of type A and 3 cars of type B; scheme 2: renting 6 cars of type A and 2 cars of type B. (2) solution 1: the cost of the first car rental scheme is 5 × 200 0 + 3 × 1800 = 15400 (yuan); the cost of the second scheme is 6 × 2000 + 2 × 1800 = 15600 (yuan). The scheme of renting 5 type a cars and 3 type B cars is more cost-effective. Solution 2: let the total rental cost be y yuan, y = 2000x + 1800 (8-x) = 14400 + 200X, 5 ≤ x ≤ 6. ∵ 200 > 0, ∵ y increases with the increase of X, ∵ when x = 5, the minimum value is obtained, y = 5 × 2000 + 3 × 1800 = 15400（ The scheme of renting 5 type a cars and 3 type B cars is more cost saving