Double-sided composite progressive resin lens and manufacturing technology thereof

A resin lens, double-sided technology, applied in the field of double-sided composite progressive resin lens and its manufacturing process, can solve the problems of life obstacles, reduced eye muscle adjustment ability and zoom ability, blurring, etc., and achieves improved adaptability and deformation. The effect of reducing and alleviating visual fatigue

Inactive Publication Date: 2019-12-27
ZENNI OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With age, the lens of the eyeball gradually hardens and thickens, and the adjustment ability of the eye muscles also decreases, resulting in a decrease in zooming ability. Therefore, when looking at close objects, because the image is projected on the retina, it cannot be fully focused when looking at close objects. Even if you pay attention to protect your eyes, the degree of presbyopia will increase with age, generally at a rate of 50 degrees every 5 years, so presbyopia is a normal physiological phenomenon of the human body; and some people even Can develop into presbyopia and nearsightedness, causing serious obstacles to life

Method used

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  • Double-sided composite progressive resin lens and manufacturing technology thereof
  • Double-sided composite progressive resin lens and manufacturing technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1-2 As shown, this embodiment provides a double-sided composite progressive resin lens, including a far vision zone 1, a near vision zone 2 is arranged in front of the far vision zone 1, and a progressive channel 3 is arranged between the far vision zone 1 and the near vision zone 2, The far vision zone 1, the near vision zone 2 and the progressive channel 3 form the rear surface of the resin lens, the front surface of the resin lens includes a photometric zone 4 and a peripheral defocus zone 5, and the peripheral defocus zone 5 is located at the periphery of the photometric zone 4, so A peripheral astigmatism zone 6 is provided on the rear surface of the resin lens.

[0020] Choose a semi-finished resin blank with a refractive index of 1.60, design the luminosity of the front surface through the optical system to be -1.00D, the peripheral luminosity 10 to be -0.50D, and design the free-form surface of the back surface to see the luminosity of the far zo...

Embodiment 2

[0023] This embodiment provides a double-sided compound progressive resin lens, including a far vision zone 1, a near vision zone 2 is arranged in front of the far vision zone 1, a progressive channel 3 is arranged between the far vision zone 1 and the near vision zone 2, and the The far vision zone 1, the near vision zone 2 and the progressive channel 3 form the back surface of the resin lens, the front surface of the resin lens includes a photometric zone 4 and a peripheral defocus zone 5, the peripheral defocus zone 5 is located at the periphery of the photometric zone 4, and the resin lens A peripheral astigmatism zone 6 is provided on the rear surface of the lens.

[0024] Select a semi-finished resin blank with a refractive index of 1.60, design the front surface luminosity to -1.50D, the peripheral luminosity to -0.50D through the optical system design, and design the rear surface free-form surface to see the far zone luminosity -1.00D, progressive middle channel, and ne...

Embodiment 3

[0027] This embodiment provides a double-sided compound progressive resin lens, including a far vision zone 1, a near vision zone 2 is arranged in front of the far vision zone 1, a progressive channel 3 is arranged between the far vision zone 1 and the near vision zone 2, and the The far vision zone 1, the near vision zone 2 and the progressive channel 3 form the back surface of the resin lens, the front surface of the resin lens includes a photometric zone 4 and a peripheral defocus zone 5, the peripheral defocus zone 5 is located at the periphery of the photometric zone 4, and the resin lens A peripheral astigmatism zone 6 is provided on the rear surface of the lens.

[0028] Select a semi-finished resin blank with a refractive index of 1.67, design the front surface luminosity to -1.50D, peripheral luminosity to -0.50D through the optical system design, design the back surface free-form surface to see the far zone luminosity -5.00D, progressive middle channel, near vision T...

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Abstract

The invention provides a double-sided composite progressive resin lens and manufacturing technology thereof. The lens includes a far vision area. A near vision area is disposed in front of the far vision area. A progressive channel is disposed between the far vision area and the near vision area. The far vision area, the near vision area and the progressive channel form a rear surface of the resinlens. A front surface of the resin lens includes a photometric area and a peripheral defocusing area. The peripheral defocusing area is located at a peripheral place the photometric area. Peripheralastigmatism areas are disposed on the rear surface of the resin lens. A function of the peripheral deformation astigmatism areas is changed through a special design of the front surface and double-sided technology, a middle visible region is effectively enlarged, the area of the peripheral useless astigmatism regions is effectively reduced, and a valid region of the progressive channel is enlarged. Deformation of the peripheral astigmatism areas is effectively reduced, visual fatigue can be effectively reduced, and adaptability is improved.

Description

technical field [0001] The invention relates to the field of lens manufacturing, in particular to a double-sided composite progressive resin lens and a manufacturing process thereof. Background technique [0002] With age, the lens of the eyeball gradually hardens and thickens, and the adjustment ability of the eye muscles also decreases, resulting in a decrease in zooming ability. Therefore, when looking at close objects, because the image is projected on the retina, it cannot be fully focused when looking at close objects. Even if you pay attention to protect your eyes, the degree of presbyopia will increase with age, generally at a rate of 50 degrees every 5 years, so presbyopia is a normal physiological phenomenon of the human body; and some people even It can develop into presbyopia and myopia, which seriously hinders life. [0003] Anamorphic astigmatism is a key problem that progressive multifocal ophthalmic lenses are difficult to overcome. Although a properly fitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/06
CPCG02C7/066G02C7/068
Inventor 刘锋
Owner ZENNI OPTICAL
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