tender for supply of phase contrast microscope with accessories , phase contrast microscope with accessories optical system - infinity corrected optical system with ergonomic design principle; viewing head - compensation free trinocularsidentopf head inclined at 30˚, 360˚ rotatablinterpupilary distance 54-75mm with beam splitter prism r:t, 50:50, 0:100 (eyepiece / desktop view); eyepiece - high eye point plan eyepiece pl10x/22 mm paired with anti-fungal coating and up to +/- 5 diopter adjustment; nosepiece - reversed quadruple nosepiece; objectives - plan infinity objectives 4x ph1, 10x ph1, 40x ph2, 100x ph3; stage - double layer rackless mechanical stage 187 x 167 mm (80 × 55 mm moving range) with low right or left hand drive x&y movement, precision point 0.1 mm.; condenser - universal turret condenser for brightfield and phase contrast with iris diaphragm and filter; focusing - coaxial coarse & fine focusing adjustment system with coarse focusing stop and tension adjustment range 10mm, fine division 0.001mm.; transmitted illumination - 3/5 watt led illumination with brightness adjustable intensity controller; camera adapter - 0.5x c-mount adapter; camera with image analysis software specifications: • sensor size: sony imx 334 (c) 1/1.8 (7.68 x 4.32) • pixel size (μm): 2.0 x 2.0 • resolution/fps :3840*2160/60fps • binning : 1x1 • exposure time: 0.04 ms -100 ms • usb mouse: connect usb mouse for easy operation with embedded xcam view software • usb 3.0: connect usb flash drive to save pictures and videos • hdmi: comply with hdmi 2.0 standard. 4k/1080p format video output and supporting automatic switch between 4k and 1080p format according to the connected monitors image capture and video saving in sd card 1. video format：8m(3840*2160) h264 encoded mp4 file； 2. video saving frame rate：50~60fps(related to speed level or sd card and resolution of the video) 3. image capture 8m (3840*2160) jpeg image features - ü on screen measurement ü zoom ü mirror ü comparison (video-image, image-image) ü freeze ü cross 24 inch hd display