Optical Systems with Color Filters for Emissive Displays: abstract simplified (18173579)

• This abstract for appeared for patent application number 18173579 Titled 'Optical Systems with Color Filters for Emissive Displays'

Simplified Explanation

This abstract describes an electronic device that uses a light source panel to emit image light. The light is directed towards an eye box using a waveguide. The device also includes an input coupler to couple the image light into the waveguide and an output coupler to couple the image light out of the waveguide. A color filter is placed between the light source panel and the output coupler to filter the image light using a steep cutoff characteristic. This allows the image light to have a desired color while maximizing the efficiency of the light emitters in the light source panel, making the device more power efficient.

Original Abstract Submitted

An electronic device may provide image light to an eye box. The display may include a light source panel that emits the image light. A waveguide may direct the image light towards the eye box. An input coupler may couple the image light into the waveguide and an output coupler may couple the image light out of the waveguide. A color filter may be optically interposed between the light source panel and the output coupler. The color filter may filter the image light using a steep cutoff characteristic. The color filter may allow the image light to exhibit a desired color point while also allowing the light source panel to use light emitters having peak emission wavelengths that maximize the efficiency of the light emitters and thus the power efficiency of the device.