Stereoscopic Camera Lens Convergence for Glasses-Free 3D
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Solution Overview
Problem
Conventional 3D movie technologies require viewers to wear glasses to perceive depth, which can lead to double images and poor clarity without them, due to parallel projectors and lenses that do not mimic human eye focus mechanisms.
Innovation Solution
The Focal Point Stereoscopic Video and Camera system uses two lenses that converge to focus on the same spot, with each lens having two image sensors, allowing the center to be clear and in focus while the periphery is out of focus and doubled, mimicking human depth perception without the need for glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parallel projectors and lenses are used in conventional 3D systems, then 3D depth perception can be achieved through glasses, but viewers experience double images and poor clarity when removing the glasses
Solution Approach 1:
Instead of keeping lenses parallel as in conventional 3D systems, this invention inverts the approach by making the lenses converge to focus on the same spot, mimicking human eye behavior. This inversion allows the optical system to naturally produce a single clear image at the focal point without requiring glasses, while still maintaining stereoscopic depth perception through the convergence geometry
Solution Approach 2:
The patent changes the angular parameter of the lenses from parallel (0 degrees between optical axes) to convergent (non-zero angle pointing to common focal point). This parameter change transforms the optical behavior to match human vision, where both eyes converge on objects of interest, thereby eliminating the double image problem when glasses are removed while preserving 3D depth perception
2Measurement precision
If two lenses swerve together to focus on the same spot, then a clear central focal point is achieved, but the periphery becomes out of focus and doubled
Solution Approach 1:
The patent applies local quality by making different regions of the screen serve different functions: the central focal point area provides sharp, clear stereoscopic imagery for depth perception, while the peripheral areas intentionally remain out of focus and doubled. This mirrors human vision where we have a sharp foveal center and blurred peripheral vision, creating a more natural viewing experience that prioritizes depth perception at the point of interest
Solution Approach 2:
The system intentionally applies excessive convergence to the lenses, causing them to focus so precisely on the central point that the periphery becomes overly converged and thus out of focus. This partial action approach accepts that not all areas of the screen can be equally sharp, but the critical focal point where depth perception occurs is rendered with maximum clarity
3Reliability
If conventional 3D projectors use parallel lenses with filtering, then stereoscopic separation is achieved, but the image appears separated left to right without natural focus
Solution Approach 1:
The patent replaces the mechanical filtering system (red/blue or polarized filters in conventional 3D) with a geometric optical system based on lens convergence. Instead of using filters to separate left and right eye images, the system uses the natural convergence of both lenses on the same focal point to create stereoscopic separation, eliminating the need for glasses and producing more natural depth perception that matches human binocular vision
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
This system provides a clear and immersive 3D experience by focusing on a central point while maintaining a wide field of view, allowing viewers to see through the eyes of the subject, enhancing depth perception and clarity without the need for glasses.
Implementation Method 1
the lenses of the two Videos/Cameras swerving together as they focus on the same spot
Implementation Method 2
only the small dot in the center of the screen is clear, and 3-D, and everything else that is seen around the wide screen is out of focus
Implementation Method 3
The first Sensor from each lens is too close by length from the lens in order to focus light clearly. The second Sensor from each lens is at the correct length from the lens in order to receiver light clearly.
Data Source
AI summary
This Video/Camera works in the same way as do our human eyes, with the two Lenses placed six and a half centimeters apart from the center of the left Lens to the center of the right Lens, and also, the two Lenses always focusing on the same spot. Our human eyes, when wishing to see something that is closer in distance, the eyes swerve more to the center; left eye turning right, and right eye turning left. In order to target at a point from two angles, the eyes must give less attention to the wider area. All around the area, the two human eyes see a misty, vague shadow, and also double, since the two eyes look from different locations. Each Lens has two Image Sensors—a Sensor is the receiver of the light from a Lens—quite close together in parallel, the first Sensor of the two is too close in length from the Lens in order to be clear. The first Sensor of the left Lens, and the first Sensor of the right Lens, has a small hole in its center, and that is the only light entering onto the center of the second Sensor on the left, and the second Sensor on the right.The Lenses of Focal Point Stereoscopic Video and Camera can continue focusing on a spot of the photographer's choosing as the cylinders of the video move away.