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関連する概念動画

Anatomy of the Eyeball01:20

Anatomy of the Eyeball

7.5K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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The Retina01:32

The Retina

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The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
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Perceptual Constancy01:12

Perceptual Constancy

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Color Vision01:24

Color Vision

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Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
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関連する実験動画

Updated: Sep 8, 2025

Automated Charting of the Visual Space of Housefly Compound Eyes
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Automated Charting of the Visual Space of Housefly Compound Eyes

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異なる光のレベルでの知覚のためのアダプティブスーパーポジション複合眼

Heng Jiang1,2, Chi Chung Tsoi1,2, Yao Chai1,2

  • 1Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, China.

Science advances
|September 5, 2025
PubMed
まとめ

研究者たちは 昆虫に触発された 適応性のある人工複合眼を開発しました これらの光学重置人工複合眼 (OSACE) は自然構造を模倣し,さまざまな照明条件でうまく機能し,高度なイメージング機能を提供します.

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Visualizing Visual Adaptation
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Visualizing Visual Adaptation

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Determination of Photoreceptor Cell Spectral Sensitivity in an Insect Model from In Vivo Intracellular Recordings
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Determination of Photoreceptor Cell Spectral Sensitivity in an Insect Model from In Vivo Intracellular Recordings

Published on: February 26, 2016

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関連する実験動画

Last Updated: Sep 8, 2025

Automated Charting of the Visual Space of Housefly Compound Eyes
08:34

Automated Charting of the Visual Space of Housefly Compound Eyes

Published on: March 31, 2022

2.0K
Visualizing Visual Adaptation
04:43

Visualizing Visual Adaptation

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Determination of Photoreceptor Cell Spectral Sensitivity in an Insect Model from In Vivo Intracellular Recordings
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科学分野:

  • バイオミメティック工学
  • 光学とフォトニクス
  • 材料科学

背景:

  • 自然複合眼,特に光学重置自然複合眼 (OSNCE) は,異なる光の強さに著しい適応性を示す.
  • 既存の人工複合眼 (ACE) は主にアポシションデザインに焦点を当て,その機能を明るい光条件に制限しています.
  • 幅広い照明に適応できる光学重置人工複合眼 (OSACE) に関する研究は限られている.

研究 の 目的:

  • 人工システムでOSNCEの解剖学的および機能的特性を複製する.
  • 明るさの大きな変化に適応できるOSACEを開発する.
  • 広い視野と速い動き検出を含む高品質のイメージングパフォーマンスを達成します.

主な方法:

  • OSNCEの解剖学的な特徴を 人工オマチディアとしてレンズ付きのプラスチック光ファイバーを使って模倣した.
  • 光の適応のためのハードウェアとアルゴリズムを統合した空間と時間のアプローチを実装した.
  • OSACEの性能を 1000倍もの照明の範囲でテストしました

主要な成果:

  • OSNCEの重要な解剖学的特徴と ガンジリアの調整を成功裏に複製した.
  • 照明の強度が1000倍に変わっても 堅実なパフォーマンスを発揮します
  • 180°の視野,最小の歪み,そしてほぼ無限深さの映像を保持した.

結論:

  • 開発されたOSACEは,さまざまな照明条件に効果的なバイオミメティックな適応を示しています.
  • 空間と時間を組み合わせたアプローチにより,高性能な可変光での画像処理が可能になります.
  • これらの適応型OSACEは監視,バーチャルリアリティ,UAVの応用に大きな可能性を秘めています.