解析度後焦距測試圖卡(72 扇區)_深圳市賽麥吉影象技術有限公司

    SineImage測試卡

      解析度後焦距測試圖卡(72 扇區)

      品牌▩₪▩:Sine Image/ESSER愛莎
      型號▩₪▩:YE0121/TE121
      尺寸▩₪▩:可定製
      材料▩₪▩:高畫質相紙/菲林
      比例▩₪▩:4:3
      型別▩₪▩:反射式

     Back focus test card

      Resolution test card Back focus test card YE0121 for camera lens adjustment and check after the focal length. The test card consists of a 72-fan Siemens star on a white background.

      Back focus test chart using method

      Use low-transmit filters and low-level lighting to ensure that the camera does not over-adjust the aperture open position.

      A) Optical focus: adjusts the focal length of the zoom lens to the maximum focal length.

      B) Back focal length (lens): Adjust the focal length to the shortest focal length by adjusting the mechanical adjustment of the lens screw, and then alternately optimize a).

      C) Back focus (camera tube): If the focus is on the maximum and short focal lengths of the different channels, Resolution test car the individual camera tubes must be mechanically adjusted for the optical axis.

      後焦距測試圖卡簡介

      後焦距測試圖卡YE0121用於相機鏡頭的調整和檢查後焦距↟◕◕◕。測試圖卡由一個72扇形的西門子之星在白色背景上組成↟◕◕◕。

      後焦距測試圖卡使用方法

      使用低透射濾光片和低水平照明以確保相機在光圈開啟的位置沒有過度調節↟◕◕◕。

      a)光學聚焦▩₪▩:調整變焦鏡頭的焦距到最大焦距↟◕◕◕。

      b)後焦距(鏡頭)▩₪▩:透過調節機械地調節鏡頭螺絲調整焦距到最短焦距✘✘•,然後交替最佳化a)↟◕◕◕。

      c)後焦距(攝像管)▩₪▩:如果焦點在不同通道的最大和最短焦距變化✘✘•,個別的攝像管必須機械的調整光軸↟◕◕◕。

      1╃◕│•✘、選擇白色通訊道↟◕◕◕。設定光學聚焦在最大焦距↟◕◕◕。調節W-通道拾取管的最短焦距和發射焦點達到最佳聚焦↟◕◕◕。必要時交替最佳化調節光學聚焦↟◕◕◕。

      2╃◕│•✘、調整紅色和藍色拾取管的不變焦距和最短焦距✘✘•,直到最佳聚焦的實現↟◕◕◕。影象對焦(對焦調整)通過後焦距的調整得以在全焦段(放大)和恆定的距離物件↟◕◕◕。

      解析度測試卡後焦距測試圖卡的外直徑是一個解析度測試圖✘✘•,這個扇形星的解析度是50.5線✘✘•,即0.65MHz(625線)或0.64MHz(525線)↟◕◕◕。這個扇形星有一個不確定的部分直接是為直徑的1%↟◕◕◕。

      1, select the white channel. Set the optical focus at the maximum focal length. Adjust the shortest focus and emission focus of the W-channel pick-up tube for optimal focus. Adjust the optical focus alternately when necessary.

      2, adjust the red and blue pick-up tube without changing the focal length and the shortest focal length until the best focus is achieved. The image focus (focus adjustment) is adjusted by the back focal length to be in full focal lengths (magnified) and constant distance objects.

      Back focus test The outer diameter of the card is a resolution test chart, the fan-shaped star resolution is 50.5 lines, that is 0.65MHz (625 lines) or 0.64MHz (525 lines). The fan-shaped star has an indefinite part that is directly for 1% of the diameter.

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