Abstract: An InGaN/GaN multiple quantum well blue light detector- includes: a Si substrate, an AlN/AlGaN/GaN buffer layer, a u-GaN/AlN/u-GaN/SiNx/u-GaN buffer layer, an n-GaN buffer layer, an InGaN/GaN superlattice layer and an InGaN/GaN multiple quantum well layer in sequence from bottom to top. The multiple quantum well layer has a groove and a mesa, the mesa and the groove of the multiple quantum well layer are provided with a Si3N4 passivation layer. The passivation layer in the groove is provided with a first metal layer electrode with a semicircular cross section, and the passivation layer on the mesa is provided with second metal layer electrode.

Abstract: A stereoscopic endoscope system for concurrently imaging at both visible and NIR wavelengths includes an endoscope operable to transmit both visible and NIR wavelengths and a light source operable to generate visible light and NIR excitation light. An intensity of the visible light is independent of an intensity of the NIR excitation light. The stereoscopic endoscope system also includes a stereoscopic camera having a single image sensor operable to detect a left eye image or a right eye image at both visible and NIR wavelengths, a controller coupled to the light source and the stereoscopic camera, and a display device operable to be viewed using stereoscopic spectacles.

Abstract: A method of operating an endoscopy system includes concurrently illuminating a tissue with NIR excitation light and visible light, imaging the tissue using a single detector, and independently adjusting an intensity of the NIR excitation light and an intensity of the visible light.

Abstract: A method of operating an endoscopy system includes concurrently illuminating a tissue with NIR excitation light and visible light, imaging the tissue using a single detector, and independently adjusting an intensity of the NIR excitation light and an intensity of the visible light.