The vehicle lens patent of YTOT optics reduces the processing cost and improves the performance of the lens by adopting the optical structure of one glass lens and four aspheric plastic lenses.

The lens market has soared, and the demand for vehicle lens is large. YTOT optics revealed that the company's vehicle lens products are currently used in the afterloading market, but have not yet entered the front loading market. The potential market capacity of intelligent automobile optical sensor is huge. YTOT will focus on vehicle lens in the later stage.

With the rapid development of social economy and science and technology, vehicle video system has become more and more popular and high-end. With the upgrading of the chip, all aspects of the performance of the vehicle lens, including field angle, optical aperture, pixel and image plane size, are also optimized. Among them, the ultra wide angle fixed focus lens is one of the lenses that account for a large proportion of the demand. Its characteristics are short focal length, large field angle and wide monitoring range. However, the ultra wide angle fixed focus lens in the prior art has long focal length, high cost, small field angle and large volume, and the cost performance can not meet the market demand.

The picture is the schematic diagram of the optical structure of the utility model proposed by the invention, which is an ultra wide angle small fixed focus lens for vehicles. It includes the first lens 1, the second lens 2, the third lens 3, the fourth lens 4 and the fifth lens 5 arranged in order from the object side to the image side. Among them, 1 is convex concave negative power glass spherical lens, 2 is concave convex positive power plastic aspheric lens, 3 and 5 are biconvex positive power plastic aspheric lens, and 4 is biconvex negative power plastic aspheric lens.

The first lens 1 is directly supported by the second lens 2, the second lens 2 is tightly matched with the third lens 3 through the spacer, and the third lens 3, the fourth lens 4 and the fifth lens 5 are tightly matched through soma. The focal length of the fixed focus lens is f = 1.8mm, the aperture fno = 2.4, the field angle FOV = 170 °, and the total optical length TTL = 13.5mm; Supports pixel spacing of 2.2 μ M chip, the edge relative illuminance is 50%.

In addition to the first lens, all lenses are made of plastic lens and aspherical lens, which achieves low cost and high performance. The cost of plastic lens is much lower than that of glass spherical lens, so the cost is reduced. Aspherical lens also improves the performance compared with traditional spherical lens. Due to the structure of one glass spherical lens and four plastic aspherical lenses, it gives full play to the advantages of easy processing of glass lenses and low cost of plastic lenses. It has an ultra short focal length of 1.8mm, the maximum field angle of 160 degrees, small volume, total length less than 14mm, high cost performance and good market prospect.

The lens has 2 million pixels in visible light. Through the rational use of glass plastic combination, it realizes large aperture and good imaging quality. It can also monitor clear and bright pictures under low illumination at night. At the same time, through reasonable optimization, it has the function of temperature compensation, which can be used in the environment of - 30 ~ + 80 degrees without defocus. It is suitable for driving recording, sports photography, home security and other equipment.

In short, the patent of YTOT optics for vehicle lens reduces the processing cost and improves the performance of the lens by adopting the optical structure of one glass lens and four aspheric plastic lenses.

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