x
uploads/object lens.jpg

object lens object lens =object-glass.

object lesson

The rear expounds the working principle of pick - up and the methods that are able to implement compatibility and fit high density disc . moreover a devise idea is put forward that hologram incorporates object lens that can adapt to the panasonic ' s double focus and give credible technologic guarantee and carry out product ' s simplification 后半部分對dvd的核心部分? ?激光頭的工作原理及其滿足高密度和兼容性要求的實現方法進行了詳細闡述,并提出了適應松下兩焦點光頭的全息板與物鏡一體化設計思想,為產品簡單化的追求提供了可靠的技術保證。

In the retrofocus project , a retrofocus structure with two elements is used in the object lens to enlarge fov and back working distance , in the head of which the negative meniscus have the effect of balancing aberration and deviating rays like a prism . and a standard hyperhemisphere immersion lens with high refractive index is put behind the object lens to satisfy the receiving of a detector with smaller photosensitive 反遠距設計方案中物鏡采用二片式反遠距結構,增大了視場和后工作距離,彎月型負透鏡在前,具有平衡像差和棱鏡的偏向作用;物鏡后放置高折射率標準超半球型浸沒透鏡,滿足小光敏面探測器接收。

This paper analyses emphatically the position error and manufacture error of critical - angle prism the position error and aberration of object lens the position error and manufacture error of the polarization beam splitter the position error of the detector , and come out their relations 著重分析了臨界角棱鏡位置誤差與制造誤差;物鏡的位置誤差與像差;偏振分束棱鏡的位置誤差與制造誤差;探測器的位置誤差等對離焦誤差信號的影響,并給出了理論曲線。

This paper analyses the critical angle method that often use in focus detected . we receive two relations , the first relation between refractive index of the critical - angle prism and focus - error signal ; the second relation between numerical aperture of object lens and out - of - focus error signal 本文針對伺服系統中常用的調焦方法-臨界角方法進行了分析,理論上得到臨界角棱鏡的折射率、物鏡的數值孔徑與離焦誤差信號的關系。

Long focus object lens of three color achromatic aberration is one of two posers of optical design , using this method can get a perfect result . compared with pw method , the first results received from the wave - deviation method are more accurate and more rapid 使用此數學模型編的光學自動設計程序,也可以說是光學鏡頭設計的一種新方法,即實現自動選玻璃,求解初始結構(曲率半徑r ,厚度d等)和自動校正像差和優化系統等。

She hardly observed that a tear descended slowly upon his cheek , a tear so large that it magnified the pores of the skin over which it rolled , like the object lens of a microscope 她也沒有看見一滴淚水慢慢地從他的臉上流下來,那是一滴很大的淚水,好像是一架放大鏡的目鏡,把它流過去的皮膚上的毛孔都放大了。

If the objective lens is further away from the compact disk than the focal length of the object lens , then the cylindrical lens again creates an elliptical image on the photodetector array 如果物鏡與光盤之間的距離長于物鏡的焦距,柱面透鏡也會使在光電探測器陣列上的成像變成橢圓影像。

If the objective lens is closer to the compact disk than the focal length of the object lens , then the cylindrical lens creates an elliptical image on the photodetector array 如果物鏡與光盤之間的距離短于物鏡的焦距,柱面透鏡就會使在光電探測器陣列上的成像變成橢圓影像。

Secondly , using compound on - axial holographic lens to design a diffractive / refractive hybrid object lens 隨后,利用復合同軸全息透鏡設計了一個衍折混合照相物鏡。

An image of the object is projected by the object lens on to the photocathode of an image converting tube . 物象通過物鏡投影在變像管的光陰極上。