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Optical path modulation device, manufacturing method thereof, optical equipment and electronic device

A manufacturing method and technology of optical equipment, applied in the field of optics, can solve problems such as the inability of the lens to select light waves alone, the inability to eliminate stray light interference, and the increase in lens module technology, so as to achieve a good stray light blocking effect and eliminate stray light The effect of interference and low transmittance

Inactive Publication Date: 2019-07-16
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The application provides an optical path modulation device and its manufacturing method, optical equipment and electronic device, which achieves the purpose of selectively collecting light waves of specific wavelengths and performing optical path modulation, and eliminates the interference of other stray light, thereby solving the problem of existing The lens cannot independently select the light wave, the optical path modulation method is single, the lens module process increases, and other stray light interference cannot be well ruled out

Method used

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  • Optical path modulation device, manufacturing method thereof, optical equipment and electronic device
  • Optical path modulation device, manufacturing method thereof, optical equipment and electronic device
  • Optical path modulation device, manufacturing method thereof, optical equipment and electronic device

Examples

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Embodiment 1

[0082] Figure 1A It is a schematic diagram of the cross-sectional structure of the optical path modulation device provided in Embodiment 1 of the present application, Figure 1B It is a schematic diagram of light wave selection and optical path modulation of the optical path modulation device provided in Embodiment 1 of the present application, Figure 1C A schematic top view of the optical path modulation device provided in Embodiment 1 of the present application.

[0083] see Figures 1A-1C As shown, the optical path modulation device 100 includes: a filter layer 20, a light blocking layer 30 and an optical path modulation element 40, wherein the light blocking layer 30 is provided with a single or a plurality of light through holes 31 arranged at intervals, wherein, in this embodiment , the light blocking layer 30 is used to block the light of a specific wavelength, so that the light of a specific wavelength cannot pass through the light blocking layer 30. In order to mak...

Embodiment 2

[0103] Figure 2A It is a schematic diagram of the cross-sectional structure of the optical path modulation device provided in Embodiment 2 of the present application, Figure 2B It is a schematic diagram of light wave selection and optical path modulation of the optical path modulation device provided in Embodiment 2 of the present application.

[0104] The difference between this embodiment and the above-mentioned embodiments is that in this embodiment, specifically, the light blocking layer 30 is arranged on at least one side of the substrate 10, for example, the light blocking layer 30 can be arranged on the front or back of the substrate, or the light blocking layer 30 can The barrier layer 30 is provided on both sides of the substrate 10, see Figure 2A-2B As shown, the light blocking layer 30 is disposed on the front surface of the substrate 10. Specifically, the light blocking layer 30 at least partially covers one side of the substrate 10. The optical path modulation e...

Embodiment 3

[0110] Figure 3A A schematic diagram of the cross-sectional structure of the optical path modulation device provided in Embodiment 3 of the present application, Figure 3B A schematic diagram of light wave selection and optical path modulation of the optical path modulation device provided in Embodiment 3 of the present application.

[0111] The difference between this embodiment and the foregoing embodiments is: in this embodiment, see Figure 3A-3B As shown, the filter layer 20 is a filter substrate 10a that can transmit light of a specific wavelength (see the following Figure 6A shown), that is, in this embodiment, the filter layer 20 is not a film layer, but a filterable substrate 10 material, so that the filter substrate 10a can be used as the filter layer 20 and can also be used as the above-mentioned embodiment The substrate 10 in the first and second embodiments is used, which avoids additionally setting a filter layer on the substrate 10, wherein, in this embodime...

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Abstract

The invention provides an optical path modulation device, a manufacturing method thereof, optical equipment and an electronic device. The optical path modulation device includes a filter layer (20), alight blocking layer (30), and an optical path modulation element (40). The light blocking layer (30) is provided with one or more light through holes (31) arranged at intervals. The projection of the light path modulation element (40) on the light blocking layer (30) covers the light through hole (31). The light filtering layer (20) is used for selectively transmitting light rays with specific wavelengths at the positions of the light blocking layer (30) and the light path modulation element (40). According to the optical path modulation device, the purposes of selective transmission and optical path modulation of light waves with specific wavelengths by a single optical path modulation device are achieved; meanwhile, due to secondary blocking of the light blocking layer and the light filtering layer, light rays have extremely low transmittance, and interference of other stray light is eliminated.

Description

technical field [0001] The present application relates to optical technology, and in particular to an optical path modulation device with functions of selective transmission of light waves and optical path modulation, its manufacturing method, optical equipment and electronic device. Background technique [0002] With the continuous development of smart terminals, more and more optical devices such as cameras, 3D imaging sensors, and under-display fingerprint recognition sensors are applied to terminals. The light in the range is modulated by the optical path to collect and identify, and at the same time eliminate the interference of other stray light in the unnecessary wavelength range. [0003] At present, it is difficult for a single lens in optical equipment to have good wavelength selection characteristics. In order to select light in a specific wavelength range, optical equipment often places one or several individual filters in the optical path of the lens. In order ...

Claims

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Application Information

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IPC IPC(8): G02B5/20
CPCG02B5/20
Inventor 王文轩沈健王红超姚国峰
Owner SHENZHEN GOODIX TECH CO LTD