Invention Grant
- Patent Title: Projector with field lens
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Application No.: US17187823Application Date: 2021-02-28
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Publication No.: US11792371B2Publication Date: 2023-10-17
- Inventor: Robert Matthew Bates , David G. Fliszar
- Applicant: Robert Matthew Bates , David G. Fliszar
- Applicant Address: US CO Erie
- Assignee: Snap Inc.
- Current Assignee: Snap Inc.
- Current Assignee Address: US CA Santa Monica
- Agency: Culhane Meadows PLLC
- Agent Stephen J. Weed
- Main IPC: H04N9/31
- IPC: H04N9/31 ; G02B27/01 ; G02C11/00

Abstract:
A projector having a curved field lens and a displaced light modulating display. The system includes at least one light source configured to generate colored light beams, and a prism routing the light beams to the display. The curved field lens is coupled to a face of the prism, and the prism and curved field lens together decenter the light beam from the prism face and uniformly illuminate the display. A center of the display is displaced from the projection lens optical axis. The decentered light beam and the displaced display together generate a favorable shifted boresight of the created image. Dimensions of components of the projector are a function of a curvature of the curved field lens. The greater the curvature of the curved field lens, the smaller the dimensions of the components and the overall projector. The projector may be used in eyewear.
Public/Granted literature
- US20220279151A1 PROJECTOR WITH FIELD LENS Public/Granted day:2022-09-01
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