an optical lens

Abstract

The invention relates to an optical lens which serves as an optical system for virtual reality head-mounted display equipment. The optical lens sequentially comprises a first lens L1 with positive focal power, a second lens L2 with positive focal power, a third lens L3 with positive focal power, and a fourth lens L4 with negative focal power from the eye side to the screen side, wherein focal power combination of the third lens L3 and the fourth lens L4 is that the front is positive and the back is negative. The fourth lens L4 adopts a double retroflection structure.

Description

technical field [0001] The invention relates to an optical system for a virtual reality head-mounted display device. Background technique [0002] Virtual reality head-mounted display equipment, also has many titles such as VR head display, VR glasses, glasses VR, etc. The resulting product is also a brand-new means of human-computer interaction created with the help of computers and the latest sensor technology. [0003] The virtual reality head-mounted display uses the left and right eyes of a person to obtain information differences, and guides the user to have a feeling of being in a virtual environment. The display principle is that the left and right eye screens display the images of the left and right eyes respectively, and the human eyes will generate a three-dimensional feeling in the brain after obtaining this information with differences. As a virtual reality display device, the virtual reality head-mounted display has the characteristics of small size and stron...

AI Technical Summary

Problems solved by technology

At this time, according to the torque formula, it can be seen that the torque generated by wearing it on the head is very large, so the wearing comfort will be greatly reduced, and the user cannot wear it for a long time.

[0007] 2. Low image quality

With the popularity of large-screen mobile phones, the requirements for the field of view of virtual reality head-mounted displays are gradually increasing. However, the actual field of view of virtual reality head-mounted displays on the market is generally around 90°, even if it is marked as 100° , because the imaging quality of the surrounding field of view is too poor to see the display content clearly, and more seriously, because the surrounding area is blurred, the user is prone to vertigo, which leads to a significant decline in the experience of the virtual reality head-mounted display device.

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