Projector Transmissive Member Replacement Mechanism
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Solution Overview
Problem
The existing projector technologies require large color filters and cover glasses on the light-emitting side of the projection lens, leading to increased costs due to their size.
Innovation Solution
A projector design that includes a replacement mechanism for a transmissive member on the optical path between the lightbulb and the projection section, allowing for easy replacement of the transmissive member, which can be made compact, reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the color filter and cover glass are arranged on the light-emitting side of the projection lens, then color reproducibility and luminance are improved, but the size and cost of the transmissive member increase
Solution Approach 1:
The patent relocates the transmissive member from the light-emitting side of the projection lens to the light-incident side of the liquid crystal light bulb. This spatial repositioning in the optical path allows the transmissive member to be smaller in size while still achieving the desired color reproduction and luminance effects, thereby resolving the contradiction between performance and size.
2Illumination intensity
If the color filter and cover glass are arranged on the light-emitting side of the projection lens, then projection quality is improved, but manufacturing cost increases
Solution Approach 1:
By repositioning the transmissive member to the light-incident side of the liquid crystal light bulb, the patent enables the use of a smaller, less expensive component while maintaining projection quality. This spatial rearrangement reduces manufacturing costs without sacrificing performance.
3Ease of manufacture
If the transmissive member is made compact, then cost is reduced, but dust may enter the optical path more easily
Solution Approach 1:
The patent introduces a dust-proof cover as an intermediary component that protects the optical path from dust contamination. This cover is positioned to prevent dust from entering the optical path while allowing the transmissive member to remain compact and close to the liquid crystal light bulb, thus resolving the contradiction between compactness and dust protection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enables the transmissive member to be replaced as needed, maintaining compactness and reducing costs, while preventing dust entry into the optical path.
Implementation Method 1
The lightbulb is a liquid crystal lightbulb
Implementation Method 2
modulates light modulated by the lightbulb
Implementation Method 3
a cross dichroic prism that is arranged on an optical path between the liquid crystal lightbulb and the projection section
Implementation Method 4
a transmissive member arranged on an optical path between the lightbulb and the projection section
Data Source
AI summary
[Solving Means] A projector according to the present technology includes a lightbulb, a projection section, and a replacement mechanism. The lightbulb modulates light. The projection section projects light modulated by the lightbulb. The replacement mechanism holds a transmissive member arranged on an optical path between the lightbulb and the projection section and is capable of replacing the transmissive member.