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工程光学英文题加中文题含答案

工程光学英文题加中文题含答案
工程光学英文题加中文题含答案

English Homework for Chapter 1

ancient times the rectilinear propagation of light was used to measure the height of objects by comparing the length of their shadows with the length of the shadow of an object of known length.

A staff 2m long when held erect casts a shadow long, while a building’s shadow is 170m long. How tall is the building

Solution. According to the law of rectilinear propagation, we get, 4.32170 x x=100 (m)

So the building is 100m tall.

from a water medium with n= is incident upon a water-glass interface at an angle of 45o. The glass index is . What angle does the light make with the normal in the

glass

Solution. According to the law of refraction, We get,

'

'sin sin I n I n = 626968.05.145sin 33.1sin =?='ο

I ο8.38='I So the light make

in the glass.

3. A goldfish swims 10cm from the side of a spherical bowl of water of radius 20cm. Where does the fish appear to be Does it appear larger or smaller

Solution. According to the equation.

r n n l n l n -'=-'' and n ’

=1 , n=, r=-20

we can get A

11416.110

133.15836.8)

(5836.81165.020

33.01033.11>-=??-=''=-='∴-=--+-=-'+='l n l n cm l r n n l n l βΘ

So the fish appears larger.

object is located 2cm to the left of

convex end of a glass rod which has

a radius of curvature of 1cm. The

index of refraction of the glass is

n=. Find the image distance.

Solution. Refer to the figure. According to the equation

r n n l n l n -'=-'' and n=1, n ’=, l 1=-2cm,

r 1=1cm , we get

cm l l d l l l 202

1115.15.121

21

1='∴-∞='-=∞='∴=-+-='

English Homework for Chapter 2

object 1cm high is 30cm in front of a thin lens with a focal length of 10cm. Where is the image Verify your answer by graphical construction of the image.

Solution.

equation,

f l l '=-'11 and l=-30cm f ’=10 cm.

we get

)(15)

30(10)30(10cm l f l f l =-+-?=+''='

Others are omitted.

lens is known to have a focal length of 30cm in air. An object is placed 50cm to the left of the lens. Locate the image and characterize it.

Solution. According

equation, f l l '=-'11 and f′=30cm we get

)(75)50(30)50(30cm l f l f l =-+-?=+''=' 5.15075-=-='=l l β The image is a real, larger one.

object is transparent cube, 4mm across, placed 60cm in front of ′

20cm focal length. Calculate the transverse and axial magnification and describe what the image looks like

Solution. From Gauss’s equation, we find for the rear surface of the cube (the face closer to the lens) that, )(3020

)60()20()60(111cm f l f l l +=+-?-='+'='

For the front surface (the face

farther away from the lens),

)(9.29204.6020)4.60(2cm l +=+-?-=' The transverse magnification for the rear surface is

?-=-+=5.06030t M But the axial magnification is ?

+=----=?'?=25.0)

4.60(609.2930l l M a Since a t M M ≠,the cube doesn’t

look like a cube.

biconvex lens is made out of glass of n=. If one surface has twice the radius of curvature of the other, and if the focal length is 5cm, what

are the two radii

Solution. Supposing r 1= -2r 2 (ρ2=-2ρ1),according to the lens equation

))(1(21ρρ?--=n we get,

52.1(51-=1282.01=∴ρ2564

.02-=ρ

∴r 1=(cm) r 2=(cm)

返回 English Homework for Chapter 4

1. A stop 8mm in diameter is placed halfway between an extended object

and a large-diameter lens of 9cm focal length. The lens projects an image of the object onto a screen 14cm away. What is the diameter of the exit pupil

Solution. Refer to the figure. First, from the known focal length and the image distance,

we find the object distance. f l l '=-'111Θ and l ’=14 f ’

=9

l =(cm)

The stop is one-half that distance is front of the lens, so l s =(cm)

∴l s ’=(cm)

22.255.31-='==s s stop ex l l D D βΘ ∴)(28.05.2cm D ex =?=

2. Two lenses, a lens of focal length and a minus lens of unknown power, are mounted coaxially and 8 cm apart. The system is a focal, that is light entering the system parallel at one side emerges parallel at the other. If a stop 15mm in diameter is placed halfway between the lenses:

1) Where is the entrance pupil

2) Where is the exit pupil

3) What are their diameters

Solution. Refer to the figure. For

the system to be a focal, the

focal points of the two

lenses must coincide. Since

f 1’=, and the two lenses are

8cm apart, so f 2’=. The

entrance pupil is the image

of stop formed by the first

lens. According to Gauss’s equation,

111111f l l '=-'

and l 1’=4cm, f 1’=. We get

())(88.55

.845.1211111cm l f l f l =?='-'''= )(05.224

88.5151mm D D stop entrance =?==β The exit pupil’s location is

)(95.715412.2)(12.25

.818)4()5.4()4()5.4(222222mm D D cm f l l f l stop exit =?=

?=-=-=-+--?-='+'='β

返回

English Homework for Chapter 7

1. A person wants to look at the image of his or her own eyes, without accommodation, using a concave mirror of 60cm radius of curvature.

How far must the mirror be from the eye if the person has

1) Normal vision

2) 4diopter myopia, without correction

3) 4diopter hyperopia, without correction

Solution.

1) When the person has normal vision, according to the following scheme 1, we get ∞='l

so, cm r l 302==

2) According to the

2,

1

41-=m l r cm l l r 25-=='

r l l 2

11=+'Θ and )(25cm l l +'= cm r 60=

2

65852

2530485850

25308522±=??-±==?+-l l l Θ ???==∴)(50')(7511

cm l cm l , or ???-==)(15')(1022cm l cm l Scheme 1 Scheme 2

So the mirror must be 75cm or 10cm from the eye.

3) According to the

3,

r

l l 211=+'Θ and )(25'cm l l += cm r 60= 2

65352

2530435350

25303522±=??+±==?--l l l Θ ???==∴)(75')(5011

cm l cm l , or ???=-=)(10')(1522cm l cm l (Since the object is real, so we can give up this answer)

So the mirror must be 50cm from the eye.

Scheme 3

2. Discussion: What differences between the following situations: 1) a microscope is used for projection;

2) the microscope is used for visual observation.

返回

工程光学(上)期末考试试卷

一.问答题:(共12分,每题3分)1.摄影物镜的三个重要参数是什么它

们分别决定系统的什么性质

2.为了保证测量精度,测量仪器一般

采用什么光路为什么

3.显微物镜、望远物镜、照相物镜各

应校正什么像差为什么

4.评价像质的方法主要有哪几种各有

什么优缺点

二.图解法求像或判断成像方向:(共18分,每题3分)

1.求像A'B'

2.求像A'B'

3.求物AB经理想光学系统后所成的像,并注明系统像方的基点位置和焦距

4.判断光学系统的成像方向

5.求入瞳及对无穷远成像时50%渐晕的视场

6.判断棱镜的成像方向

三.填空:(共10分,每题2分)

1.照明系统与成像系统之间的衔接关系为:

_______________________________

_________________

_______________________________

_________________

2.转像系统分____________________和___________________两大类,

其作用是:_______________________________ __________

3.一学生带500度近视镜,则该近视镜的焦距为_________________,

该学生裸眼所能看清的最远距离为_________________。

4.光通过光学系统时能量的损失主要有:________________________,

________________________和_______________________。

5.激光束聚焦要求用焦距较________的透镜,准直要用焦距较________的透镜。

四.计算题:(共60分)

1.一透镜焦距mm f 30'=,如在其前边放置

一个x 6-=Γ

的开普勒望远镜,求组合后系统的像方基点位置和焦距,并画出光路图。(10分)

2.已知mm r 201=,mm r 202

-=的双凸透镜,置于空气中。物A 位于第一球面前mm 50处,第二面镀反射膜。该物镜所成实像B 位于第一球面前mm 5,如图所示。若按

薄透镜处理,求该透镜的折射率n 。(20分)

3.已知物镜焦距为mm 500,相对孔径101,对无穷远物体成像时,由物镜第一面到像平面的距离为mm 400,物镜最后一面到像平面的距离为mm 300。

(1)按薄透镜处理,求物镜的结构参数;(8分)

(2)若用该物镜构成开普勒望远镜,出瞳大小为mm 2,求望远镜的视觉放大率;(4分)

(3)求目镜的焦距、放大率;(4分)

(4)如果物镜的第一面为孔径光阑,求出瞳距;(6分)

(5)望远镜的分辨率;(2分)

(6)如果视度调节为折光度,目镜应能移动的距离。(2分)

(7)画出光路图。(4分)

几何光学试卷

几何光学答案

物理光学试卷

物理光学答案

工程光学(上)期末考试参考答案

一.简答题:(共12分,每题3分)

1.摄影物镜的三个重要参数是什么它们分别决定系统的什么性质

答:摄影物镜的三个重要参数是:焦距、相对孔径和视场角。焦距影响成像的大小,相对孔径影响像面的照度和分辨率,视场角影响成像的范围。

2.为了保证测量精度,测量仪器一般采用什么光路为什么

答:为了保证测量精度,测量仪器一般采用物方远心光路。由于采用物方远心光路时,孔径光阑与物镜的像方焦平面重合,无论物体处于物方什么位置,它们的主光线是重合的,即轴外点成像光束的中心是相同的。这样,虽然调焦不准,也不会产生测量误差。

3.显微物镜、望远物镜、照相物镜各应校正什么像差为什么

答:显微物镜和望远物镜应校正与孔径有关的像差,如:球差、正弦差等。照相物镜则应校正与孔径和视场有关的所有像差。因为显微和望远系统是大孔径、

日常常见中文英文对照表

handbag手提包 hatbox帽盒 cosmetics case 化妆箱 gloves手套 wrist watch手表 belt腰带 pendant项饰 necklace项链 neck scarf围巾 earrings耳环 sun glasses太阳镜 ring戒指 bracelet手链, 手镯 tie领带 cuff links袖扣 ascot宽领带 hair net发网 brush毛刷 nail polish指甲油 cream rinse营养发水 hair spray发胶 powder puff粉扑

face powder粉 compact带镜粉盒 astringent化妆水 perfume香水 skin milk乳液 cold cream油底霜 atomizer喷雾式香水 hand mirror手镜 bobby pin发夹 false eyelashes 假睫毛 lipstick口红 wig假发 tissue面纸 purse手包 brooch胸针 shawl披肩 neckerchief领巾 台湾是中国神圣领土不可分割的一部分Taiwan is an inalienable part of the inviolable territory of China. 〃台湾同胞Taiwan compatriots 〃台湾、香港、澳门保持原有的资本主义制度和生活方式长期

不变Taiwan, Hong Kong and Macao will retain the current capitalist system and way of life for a long time to come. 〃炭疽anthrax 〃踢皮球pass the buck 〃逃废银行债务evasion of repayment of bank loans 〃韬光养晦hide one’s capacities and bide one’s time 〃讨价还价wheel and deal 〃统筹兼顾make overall plans adn take all factors into consideration; overall planning and all-round consideration 〃同乡会an association of fellow provincials or townsmen 〃筒子楼tube-shaped apartment 〃团队精神team spirit; esprit de corps 〃团结就是力量Unity is strength. 〃退耕还林还草grain for green 〃退耕还林还牧convert the land for forestry and pasture 〃鸵鸟政策ostrich policy; ostrichism 〃脱贫致富?cast (shake, throw) off poverty and set out on a road to prosperity? 〃拖欠工资arrears of wage W 〃挖墙脚undermine the foundation of sth.; cut the ground

最新中文地址如何翻译成英文(精)

5栋 Building No.5 ----------- 请看相关资料 翻译原则:先小后大。 中国人喜欢先说小的后说大的,如 **区 **路 **号 而外国人喜欢先说大的后说小的,如 **号 **路 **区,因此您在翻译时就应该先写小的后写大的 . 中文地址的排列顺序是由大到小, 如:X 国 X 省 X 市 X 区 X 路 X 号, 而英文地址则刚好相反, 是由小到大。如上例写成英文就是:X 号, X 路, X 区, X 市, X 省, X 国。掌握了这个原则,翻译起来就容易多了! X 室 Room X X 号 No. X X 单元 Unit X X 号楼 Building No. X X 街 X Street X 路 X Road X 区 X District X 县 X County X 镇 X Town

X 市 X City X 省 X Province 请注意:翻译人名、路名、街道名等,最好用拼音。 中文地址翻译范例: 宝山区示范新村 37号 403室 Room 403, No. 37, SiFang Residential Quarter, BaoShan District 虹口区西康南路 125弄 34号 201室 Room 201, No. 34, Lane 125, XiKang Road(South, HongKou District 473004河南省南阳市中州路 42号李有财 Li Youcai Room 42 Zhongzhou Road, Nanyang City Henan Prov. China 473004 434000湖北省荆州市红苑大酒店李有财 Li Youcai Hongyuan Hotel Jingzhou city Hubei Prov. China 434000 473000河南南阳市八一路 272号特钢公司李有财

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唯美的中文翻译成英文

唯美的中文翻译成英文 Abandon 放弃 Disguise 伪装 Abiding 持久的,不变的~friendship Indifferent 无所谓 Forever 最爱 I know what you want 我知道你想要什么 See you forget the breathe 看见你忘了呼吸 Destiny takes a hand.命中注定 anyway 不管怎样 sunflower high-profile向日葵,高姿态。 look like love 看起来像爱 Holding my hand, eyes closed you would not get lost 牵着我的手,闭着眼睛走你也不会迷路 If one day the world betrayed you, at least I betray the world for you! 假如有一天世界背叛了你,至少还有我为你背叛这个世界! This was spoiled child, do not know the heart hurts, naive cruel. 这样被宠惯了的小孩子,不知道人心是会伤的,天真的残忍。

How I want to see you, have a look you changed recently, no longer said once, just greetings, said one to you, just say the word, long time no see. 我多么想和你见一面,看看你最近的改变,不再去说从前,只是寒暄,对你说一句,只说这一句,好久不见。 In fact, not wine, but when the thought of drinking the unbearable past. 其实酒不醉人,只是在喝的时候想起了那不堪的过去。 The wind does not know clouds drift, day not know rain down, eyes do not understand the tears of weakness, so you don't know me 风不懂云的漂泊,天不懂雨的落魄,眼不懂泪的懦弱,所以你不懂我 Some people a lifetime to deceive people, but some people a lifetime to cheat a person 有些人一辈子都在骗人,而有些人用一辈子去骗一个人 Alone and lonely, is always better than sad together 独自寂寞,总好过一起悲伤 You are my one city, one day, you go, my city, also fell 你是我的一座城,有一天,你离开了,我的城,也就倒了。

英语翻译题20套(带答案)

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英语翻译成汉语

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