Electro-optic Module Second Frame Light Leakage Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In projection type display apparatuses, light leaking from the side surfaces of the emission side light transmitting plate in electro-optic modules causes stray light, degrading image quality, and existing configurations complicate the arrangement of optical elements like polarizing and phase difference plates.
Innovation Solution
An electro-optic module design featuring a second frame that covers the emission side light transmitting plate from the opposite side, shielding light leaks and allowing easy positioning of optical elements such as polarizing and phase difference plates, which are integrated within this frame, separate from the frame holding the electro-optic panel's side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an emission side partitioning member is provided to cover the emission side light transmitting plate, then light leakage is prevented, but the arrangement and assembly of optical elements becomes complicated
Solution Approach 1:
The frame is divided into two separate parts: a first frame that holds the electro-optic panel and a second frame that holds the emission side partitioning member and optical elements. This segmentation allows the partitioning member to effectively block light leakage while providing an independent structure for arranging optical elements, thereby resolving the contradiction between preventing light leakage and simplifying optical element arrangement.
2Ease of manufacture
If the emission side partitioning member is integrated with the frame, then component count is reduced, but light leakage shielding effectiveness decreases
Solution Approach 1:
By separating the first frame and second frame into distinct components, the invention ensures that the emission side partitioning member can be optimally positioned and configured for light leakage shielding without being constrained by integration requirements. The second frame specifically holds the partitioning member to create an effective light shield, while maintaining manufacturing simplicity through modular assembly.
3Device complexity
If a single frame structure is used, then assembly is simplified, but optical elements cannot be easily positioned at predetermined locations
Solution Approach 1:
The second frame is designed as a separate structure dedicated to holding optical elements at predetermined positions. This segmentation provides a specialized mounting structure for optical elements while the first frame handles the electro-optic panel, thereby simplifying the overall assembly process while enabling precise positioning of optical components.
Data Source
AI summary
An electro-optic module includes an electro-optic panel to which an emission side light transmitting plate is fixed, a first frame which holds side surfaces of the electro-optic panel, and a second frame which is fixed to at least one of the electro-optic panel, the emission side light transmitting plate and the first frame on the image light emission side of the first frame. The second frame is provided with a frame-like emission side partitioning member that covers the emission side light transmitting plate from the opposite side of the electro-optic panel and holds an optical element such as an emission side polarizing plate or an emission side phase difference plate.