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方法设计的焦度计主要由照明系统、准直系统、投影光学系统组成。
Methods The designed lensometer primarily consists of light system, collimating system and projective system.
目的描述一种投影式数字焦度计。
提出一种数字投影式顶焦度测量的技术方案。
A technical scheme for the digital projection type vertometer is proposed.
详细分析了该技术利用镜像测试标记检测投影物镜最佳焦面热漂移与放大倍率热漂移的基本原理。
The principle for measuring the thermal drifts of focus and magnification (TDFM) based on mirror-symmetry marks is described in this paper.
球面上共焦点之椭圆、双曲线，在球心投影中仍投影成共焦椭圆、双曲线。
The cofocal ellipse and hyperbola of spherical surface will also be projected into the cofocal ellipse and hyperbola in gnomonic projection.
逆投影法颠倒镜头成像系统物和像的位置，克服了手机镜头后焦、像素等的限制。
The adverse projection measuring method reverse the position of object and image in the imaging system of lens, it overcome back focus length and resolution power limitation.
逆投影法颠倒镜头成像系统物和像的位置，克服了手机镜头后焦、像素等的限制。
The obverse projection method is limited because of protective glass and pixel of CMOS/CCD.
逆投影法颠倒镜头成像系统物和像的位置，克服了手机镜头后焦、像素等的限制。
The obverse projection method is limited because of protective glass and pixel of CMOS/CCD.
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