Lens and implementation method for internal gas heat balance

Abstract

The invention provides a lens used for optical imaging. The lens includes a lens barrel. An accommodation chamber is formed in the lens barrel and a front lens and a rear lens unit are disposed in theaccommodation chamber of the lens barrel. Imaging light is allowed to pass through the front lens and the rear lens unit so as to be sensed by an optical sensor arranged on the rear side of the rearlens unit. A first interval space between the front lens and the rear lens unit is defined by the front lens and the rear lens unit. One inner side wall of the lens forms at least one communication channel communicating with the first interval space, so that a heat balance channel is formed by the first interval space and the communication channel. Therefore, air convection in the first interval space is achieved through the heat balance channel.

Description

technical field [0001] The invention relates to a lens, in particular to a lens capable of rapidly realizing heat balance in each space inside the lens when the temperature of the external environment or the temperature inside the lens changes. In other words, the lens of the present invention can quickly make the temperature of various spaces inside the lens tend to be consistent in a short time when the ambient temperature and the internal temperature of the lens change. Background technique [0002] A lens for optical imaging, such as a lens for a motor vehicle, generally includes a base, a lens barrel, and a plurality of lenses arranged in the lens barrel. There is generally an appropriate space between the lenses of the lens. When the temperature of the external environment where the lens is located changes, especially when it changes drastically, due to the heat transfer effect, the temperature of each lens of the lens will change sequentially along the direction from...

AI Technical Summary

Problems solved by technology

The temperature change of each lens of the lens will cause thermal expansion and contraction of the lens, which may cause the lens to be out of focus and image blur; and the sudden temperature change of the different spaces formed by these lenses may easily cause physical changes in the space gas and affect the lens. Imaging effect

In addition, uneven heating of different parts of the lens may also make the lens more susceptible to damage

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