an optical lens
An optical lens and lens technology, which is applied in optics, optical components, instruments, etc., can solve the problems of decreased experience of virtual reality head-mounted display equipment, the inability of users to wear it for a long time, and poor imaging quality of the surrounding field of view, so as to ensure clear Accuracy and image quality, improved user experience, large field of view
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Embodiment 1
[0042] Refer to attached figure 1 , 3 , 4:
[0043] The technical scheme adopted in the present invention is:
[0044] An optical system for a virtual reality head-mounted display device, which sequentially includes a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and a third lens L3 with positive refractive power from the eye side to the screen side . A fourth lens L4 with negative optical power.
[0045] Both the first lens L1 and the second lens L2 have positive refractive power, and are matched with reasonable low-dispersion material lenses, which can effectively reduce various aberrations of the optical system, especially positional chromatic aberration.
[0046] The focal power combination of the third lens L3 and the fourth lens L4 is front positive and rear negative. Such a structure can effectively reduce various aberrations, including spherical aberration and chromatic aberration. In addition, both the third lens L3 a...
Embodiment 2
[0059] Refer to attached figure 1 , 5 , 6:
[0060] Embodiment 2 satisfies the following conditions:
[0061] EFL=20.0
[0062] FNO=4.0
[0063] Table 3 shows the structural parameters of the lens of Example 2; Table 4 shows the aspheric coefficient of the lens of Example 2.
[0064] Table 3 Example 2 Lens Structure Parameters
[0065] Surface serial number
[0066] Table 4 Example 2 Lens Aspherical Coefficients
[0067] Surface serial number
[0068] The rest of embodiment 2 is the same as embodiment 1.
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