JPS5846311A - Photomicrographic lens - Google Patents
Photomicrographic lensInfo
- Publication number
- JPS5846311A JPS5846311A JP14395681A JP14395681A JPS5846311A JP S5846311 A JPS5846311 A JP S5846311A JP 14395681 A JP14395681 A JP 14395681A JP 14395681 A JP14395681 A JP 14395681A JP S5846311 A JPS5846311 A JP S5846311A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- group
- focal length
- distortion
- group lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
- Lenses (AREA)
Abstract
Description
【発明の詳細な説明】
本発明′は顕微鏡の対物レンズにて形成された物体像を
フィルム面上に再結像させて耳翼撮影を行なう顕微鏡写
真撮影レンズに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention' relates to a microscopic photographic lens for photographing the ear wings by re-imaging an object image formed by an objective lens of a microscope on a film surface.
例えば金相系顕微鏡においてこの種の撮影レンズを、用
いて写真撮影を行な、うと、歪曲収差のために像が歪ん
でしまう。この欠点を補正するのに顕微鏡対物レンズで
は困難である。それははとんどの対物レンズの歪曲収差
がプラスであり、また接眼レンズもほとんどのものがプ
ラスの歪曲収差である。そのために顕微鏡で写真撮影し
たものは糸巻型の歪曲収差が発生している。この欠点を
除去するためには顕微鏡写真撮影レンズとしてほぼOに
近い(正であっても極めて小である)か又は負の歪曲収
差のものを用いる必要がある。For example, when a photographic lens of this kind is used in a gold phase microscope to take a photograph, the image becomes distorted due to distortion aberration. It is difficult to correct this defect with microscope objectives. This is because most objective lenses have positive distortion, and most eyepiece lenses also have positive distortion. For this reason, pictures taken with a microscope have pincushion distortion. In order to eliminate this drawback, it is necessary to use a microphotography lens with distortion that is close to O (even if it is positive, it is extremely small) or has negative distortion.
従来のこの種の顕微鏡写真撮影レンズとして特開昭54
−11754号公報に記載されたものがある。この従来
例は歪曲収差が最周辺で十“3%はどになっている。又
4群構成のレンズ系であるた(2)
めに表面反射が多くコントラストの点でも多少問題があ
った。更に球面収差がやや大きくなっている。As a conventional lens for microscopic photography of this type, JP-A-54
There is one described in Japanese Patent No.-11754. In this conventional example, the distortion aberration is about 10.3% at the extreme periphery.Also, since it is a lens system composed of four groups (2), there is a lot of surface reflection, which causes some problems in terms of contrast. Furthermore, spherical aberration is slightly larger.
本発明は以上のような従来のものの欠点を除くもので、
零に近い値か負の歪曲収差を有するレンズ系で、これに
よって歪曲の少ない良好な像にて撮影し得るようにした
顕微鏡写真撮影レンズを提供するものである。The present invention eliminates the drawbacks of the conventional ones as described above,
To provide a microphotography lens which is a lens system having a distortion aberration close to zero or negative, and which enables photographing with a good image with little distortion.
本発明レンズ系は対物レンズ側に凸面を向けた正のメニ
スカスレンズの第1群レンズと、対物レンズ側に凸面を
向けた接合負のメニスカスレンズの第2群レンズと、両
凸接合レンズの第3群レンズとにて構成されるレンズ系
であ4って、更に次に示す各条件を満足することを特徴
とするものである。The lens system of the present invention includes a first lens group consisting of a positive meniscus lens with a convex surface facing the objective lens, a second lens group consisting of a cemented negative meniscus lens with a convex surface facing the objective lens, and a second lens group consisting of a double-convex cemented lens. This lens system is composed of three lens groups, and is further characterized in that it satisfies the following conditions.
12) 0.345 ≦ −≦ 0.39t41
0.01 ≦ l3−n2、≦ 0.05(3)
ただしfは全系の焦点距離、f】は第1群レンズ(前群
)°の焦点距# fz3は第2群レンズと第3群レン
ズ(後群)の合成焦点距離、rlは第1群レンズの対物
し/ズ側の面の曲率半径、d3+d4は第2群レンズの
両レンズの肉厚s n2+n3は第2群レンズの両レン
ズの屈折率である。12) 0.345 ≦ −≦ 0.39t41
0.01 ≦ l3 - n2, ≦ 0.05 (3) where f is the focal length of the entire system, f] is the focal length # of the first group lens (front group), fz3 is the focal length of the second group lens and the third group The composite focal length of the lens (rear group), rl is the radius of curvature of the objective/z side surface of the first group lens, d3+d4 is the thickness s of both lenses of the second group lens, n2+n3 is the thickness of both lenses of the second group lens is the refractive index of
以下上記の条件について説明する。The above conditions will be explained below.
本発明のようなレンズ系においては、歪曲収差は全系各
群のパワーの配分でほとんど決定されてしまう。条件(
1)は本願の目的である歪曲収差を零に近い値か又はや
や負の値にするためと諸収差をバランス良く補正するた
めに設けた条件である。In a lens system like the present invention, distortion is almost determined by the power distribution of each group in the entire system. conditions(
1) is a condition set in order to make the distortion aberration a value close to zero or a slightly negative value, which is the purpose of the present application, and to correct various aberrations in a well-balanced manner.
この条件(1)の下限をこえると歪曲収差が正の値にな
シしかも零に近い値とすることが出来ない。又条件(1
)の上限をこえると歪曲収差が負の値ではあるが大きく
なりすぎるので好ましくない。If the lower limit of this condition (1) is exceeded, the distortion cannot be a positive value, and moreover, cannot be made to be a value close to zero. Also, the condition (1
) is undesirable because the distortion becomes too large, although it is a negative value.
条件(2)は条件(1)で規定した基本構成の枠内にお
いて更に歪曲収差を良姓に補正するとともに他の収差と
のバランスをとるために設けた条件である。Condition (2) is a condition provided to further correct distortion aberration satisfactorily within the framework of the basic configuration defined in condition (1) and to balance it with other aberrations.
この条件を満足しないと歪曲収差を所望の値にしく4)
たときに他の収差が悪化して補正しきれなくなってしま
う。つまり条件(2)の下限を越えるとコマの下側光線
が補正不足となり且つ画面周辺での非点収差が補正しき
れなくなる。また、条件(2)の上限を越えるとコマの
下側光線が補正過剰となシ且つ画面周辺での非点収差の
補正が困難になる。If this condition is not satisfied, when the distortion aberration is set to a desired value (4), other aberrations will worsen and it will not be possible to correct them completely. In other words, if the lower limit of condition (2) is exceeded, the lower rays of the frame will be insufficiently corrected and astigmatism at the periphery of the screen will not be fully corrected. Furthermore, if the upper limit of condition (2) is exceeded, the lower rays of the frame will be overcorrected and it will be difficult to correct astigmatism around the screen.
条件(3)はペッツバール和を補正して像の平担性を保
つためと、コマ収差のバランスをとるために必要な条件
である。この条件の下限を越えると像面彎曲が補正不足
になり又コマの下側光線が補正過剰になる。また上限を
越えると像面彎曲が補正過剰になシ、コマの上側光線が
補正過剰になる。Condition (3) is necessary for correcting the Petzval sum to maintain flatness of the image and for balancing coma aberration. If the lower limit of this condition is exceeded, the field curvature will be under-corrected and the lower ray of the frame will be over-corrected. If the upper limit is exceeded, the field curvature will be over-corrected, and the upper rays of the frame will be over-corrected.
条件(4)は第2群レンズの両レンズの屈折率規定する
もので、第2群レンズの接合面r4とも関連して非点隔
差を補正し更に第2群レンズの両レンズの厚さと関連し
てコマ収差を補正するものである。Condition (4) defines the refractive index of both lenses of the second group lens, and is related to the cemented surface r4 of the second group lens to correct the astigmatism difference, and is also related to the thickness of both lenses of the second group lens. This is to correct coma aberration.
この条件の下限を越えると面r4の曲率が強くなりコマ
の下側光線が補正過剰になり、6mが補正過剰になって
非点隔差が大きくなる。父上限を越えるとT4がゆるく
なり、コマの上側光線が補正過剰(5)
になシ、6mは逆に補正不足になる。If the lower limit of this condition is exceeded, the curvature of surface r4 becomes strong, the lower ray of the coma becomes over-corrected, 6m becomes over-corrected, and the astigmatism difference becomes large. When the upper limit is exceeded, T4 becomes loose, and the upper ray of the frame becomes over-corrected (5), while 6 m becomes under-corrected.
次に以上説明した本発明顕微鏡撮影レンズの各実施例を
示す。Next, embodiments of the microscope photography lens of the present invention described above will be shown.
実施例 1
rl= 0.3810
d+ = 0.1125 1+ = 1.755 ν
r = 52.33r2 = 0.5114
d2−7= 0.7978
r3= 0.5258
d3 = 0.1065 n2 = 1.5231
92= 50.84r4= −0,1882
d4 = 0.0245 13= 1.54771 1
’3 = 62.83rs = 0.2−762
ds = 0.0679
re = 0.5154
d6= Oo、1085 n4= 1.734 1’
4 = 51.49r7 = −0,1568
d7= 0.0241 n5 = 1.71736
I’s = 29.51rB =−0,5307
f = 1.000
(6)
fa= 1,443 fb= 0.546 fB/
fb= 2.64実施例 2
rl = 0.3797
d+ = 0.1123 nt = 1.755 1
/+ = 52.33r2 = 0.5103
d2= o、 7963
ra = 0.5503
d3 = 0.1063 n2= 1.51118
1/2 = 51.02r4 =−0,1707
d4= 0.0245 n3 = 1.52542
1’3 = 64.55rs = 0.2696
dS= 0.0678
ra =o、 5063
d6 = 0.1083 n4= 1,741 1’
4 = 52.68rフ =−0,1616
dy ” 0.0241 ns = 1.71736
I’s = 29.51rs = −0,5658
f = 1.000
fB = 1.434 fb= 0.545 fB
/fb= 2.63実施例 3
(7)
r+ =’ 0.3619
d+ = 0.1125 nt = 1,75
5 νt = 52.33r2 = 0.4669
d2 = 0.7975
ra = 0.4977
d3= 0.1065 n2 = 1.53172
1’2 = 48.9r4 = −0,,1721
d+ =−0,0245n3 = 1.55232
L’s = 63.75rs = 0.2645
ds = 0.0679
ra = 0.5015
d6= fl、 1085 n4= 1,741 1
’4 = 52.68r7 =−0,1534
d7= 0.024I ns = 1.71736
ν5=29.51rs =−0,5632
f = 1.000
fB = 1,459 fb= 01546 fa
/fb = 2.67実施例 4
rH= 0.3837
d+ = 0.1205 nt = 1.755
ν、 = 52.33(8)
rz = 0.5056
d2 = 0.8015
rs = 0.5290
da = 0.1145 n2= 1.51118
ν2 = 51.02rn =−0,1867
d4 = 0.0305 n3 = 1.53113
1’3 = 62.44rs = 0.2583
ds = 0.0599
ra = 0.4625
da =0.1105 n4 = 1.72916
1’4 = 54.68ry −−0,1613
dt =0.0241 ns = 1.69895
1’s = 30.12r@ =−0,5709
f = 1.000
fB = 1,479 fb= 0.545 fB
/fb= 2.7まただしrl+r2+・・・+r8は
レンズ各面の曲率半径、dl+d2+・・、・+d7は
各レンズの肉厚および空気間隔、n 1 + 12 +
・・・+ n 5は各レンズの屈折率、シ!、シ2.・
・・、ν5は各レンズのアツベ数である。Example 1 rl = 0.3810 d+ = 0.1125 1+ = 1.755 ν
r = 52.33r2 = 0.5114 d2-7 = 0.7978 r3 = 0.5258 d3 = 0.1065 n2 = 1.5231
92 = 50.84r4 = -0,1882 d4 = 0.0245 13 = 1.54771 1
'3 = 62.83rs = 0.2-762 ds = 0.0679 re = 0.5154 d6 = Oo, 1085 n4 = 1.734 1'
4 = 51.49r7 = -0,1568 d7 = 0.0241 n5 = 1.71736
I's = 29.51rB = -0,5307 f = 1.000 (6) fa = 1,443 fb = 0.546 fB/
fb = 2.64 Example 2 rl = 0.3797 d+ = 0.1123 nt = 1.755 1
/+ = 52.33r2 = 0.5103 d2= o, 7963 ra = 0.5503 d3 = 0.1063 n2 = 1.51118
1/2 = 51.02r4 = -0,1707 d4 = 0.0245 n3 = 1.52542
1'3 = 64.55rs = 0.2696 dS = 0.0678 ra = o, 5063 d6 = 0.1083 n4 = 1,741 1'
4 = 52.68rf = -0,1616 dy" 0.0241 ns = 1.71736
I's = 29.51rs = -0,5658 f = 1.000 fB = 1.434 fb = 0.545 fB
/fb= 2.63 Example 3 (7) r+ =' 0.3619 d+ = 0.1125 nt = 1,75
5 νt = 52.33r2 = 0.4669 d2 = 0.7975 ra = 0.4977 d3 = 0.1065 n2 = 1.53172
1'2 = 48.9r4 = -0,,1721 d+ = -0,0245n3 = 1.55232
L's = 63.75rs = 0.2645 ds = 0.0679 ra = 0.5015 d6 = fl, 1085 n4 = 1,741 1
'4 = 52.68r7 = -0,1534 d7 = 0.024Ins = 1.71736
ν5=29.51rs=-0,5632 f=1.000 fB=1,459 fb=01546 fa
/fb = 2.67 Example 4 rH = 0.3837 d+ = 0.1205 nt = 1.755
ν, = 52.33(8) rz = 0.5056 d2 = 0.8015 rs = 0.5290 da = 0.1145 n2 = 1.51118
ν2 = 51.02rn = -0,1867 d4 = 0.0305 n3 = 1.53113
1'3 = 62.44rs = 0.2583 ds = 0.0599 ra = 0.4625 da = 0.1105 n4 = 1.72916
1'4 = 54.68ry --0,1613 dt = 0.0241 ns = 1.69895
1's = 30.12r@ = -0,5709 f = 1.000 fB = 1,479 fb = 0.545 fB
/fb=2.7 where rl+r2+...+r8 is the radius of curvature of each lens surface, dl+d2+...,...+d7 is the wall thickness and air gap of each lens, n 1 + 12 +
... + n 5 is the refractive index of each lens, shi! , C2.・
..., ν5 is the Atsube number of each lens.
以上の実施例のうち実施例1,2.4はいずれ(9)
も歪曲収差が正の値である。し75. L 005%以
内であって従来のこの種レンズが一般に3%程度である
のと比べると極めて零に近い(ifであると云える。Among the above embodiments, Examples 1, 2.4 each have a positive value of distortion (9). 75. L 005% or less, which is extremely close to zero (if) compared to the conventional lens of this type, which is generally about 3%.
そしてこの程度の歪曲収差であれば一般の顕微鏡対物レ
ンズと共に用いた場杏でも良好な写真力Iイ得られる・
。With this level of distortion, good photographic performance can be obtained even when used with a general microscope objective lens.
.
第1図は本発明撮影レンズp断面図、第2図乃至第5図
は夫々本発明の実施例1乃至実施fJ 4の収差曲線図
である。
出願人 オリンノくス光学工業株式会社代理人
向 寛 二
(10)
球面収差 非点収差 歪曲収差コマ収差
it而面M 非点収差 歪曲収差コマ収差
球面収差 非Ω] 歪曲収差
ロマ収差
第5図
球面収差 非烈奴差 歪曲収差
コマ収差FIG. 1 is a cross-sectional view of the photographing lens according to the present invention, and FIGS. 2 to 5 are aberration curve diagrams of Examples 1 to 4 of the present invention, respectively. Applicant: Agent of Orinokus Optical Industry Co., Ltd.
Hiroshi Mukai (10) Spherical aberration Astigmatism Distortion aberration Coma aberration It surface M Astigmatism Distortion aberration Coma aberration Spherical aberration Non-Ω] Distortion aberration Romani aberration Figure 5 Spherical aberration Non-reflective aberration Distortion aberration Comatic aberration
Claims (1)
1群レンズと、対物レンズ側に凸面を向けた接合レンズ
負のメニスカスレンズの第2群レンズと、両凸接合レン
ズの第3群レンズとからなり、次の各条件を満足する顕
微鏡写真撮影レンズ。 1 (2) 0.345 ≦ −≦ 0.39(4)
0.01 ≦ n3−n2 ≦ 0.05ただしf
は全系の焦点距離、f、は第1群レンズ(前群)の焦点
距離、f23は第2群レンズと第3群レンズ(後群)の
合成焦点距離、rtは第1群レンズの対物レンズ側の面
の曲率半径* d3+d4は第2群レンズの夫々のレン
ズの肉厚、n2+n3は第2(1) 群レンズの夫々のレンズの屈折率である6[Claims] A first group lens of a positive meniscus lens with a convex surface facing the objective lens side, a cemented lens second group lens of a negative meniscus lens with a convex surface facing the objective lens side, and a biconvex cemented lens. A microscopic photography lens that satisfies each of the following conditions. 1 (2) 0.345 ≦ −≦ 0.39 (4)
0.01 ≦ n3-n2 ≦ 0.05 but f
is the focal length of the entire system, f is the focal length of the first group lens (front group), f23 is the combined focal length of the second group lens and third group lens (rear group), and rt is the objective of the first group lens Radius of curvature of the surface on the lens side* d3+d4 is the thickness of each lens in the second group lens, n2+n3 is the refractive index of each lens in the second (1) group lens6
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14395681A JPS5846311A (en) | 1981-09-14 | 1981-09-14 | Photomicrographic lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14395681A JPS5846311A (en) | 1981-09-14 | 1981-09-14 | Photomicrographic lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5846311A true JPS5846311A (en) | 1983-03-17 |
JPS6132646B2 JPS6132646B2 (en) | 1986-07-28 |
Family
ID=15350957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14395681A Granted JPS5846311A (en) | 1981-09-14 | 1981-09-14 | Photomicrographic lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846311A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63273451A (en) * | 1987-05-01 | 1988-11-10 | Osamu Yamamoto | Production of processed chicken food |
JPH01165360A (en) * | 1987-12-21 | 1989-06-29 | Osamu Yamamoto | Production and production equipment for bar processed food |
JP2001221955A (en) * | 2000-02-10 | 2001-08-17 | Nikon Corp | Objective lens for parallel stereomicroscope |
KR20190104077A (en) | 2017-10-03 | 2019-09-05 | 닛폰세이테츠 가부시키가이샤 | Steel plate and manufacturing method of steel plate |
-
1981
- 1981-09-14 JP JP14395681A patent/JPS5846311A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63273451A (en) * | 1987-05-01 | 1988-11-10 | Osamu Yamamoto | Production of processed chicken food |
JPH0570418B2 (en) * | 1987-05-01 | 1993-10-05 | Osamu Yamamoto | |
JPH01165360A (en) * | 1987-12-21 | 1989-06-29 | Osamu Yamamoto | Production and production equipment for bar processed food |
JPH0418821B2 (en) * | 1987-12-21 | 1992-03-27 | Osamu Yamamoto | |
JP2001221955A (en) * | 2000-02-10 | 2001-08-17 | Nikon Corp | Objective lens for parallel stereomicroscope |
JP4660873B2 (en) * | 2000-02-10 | 2011-03-30 | 株式会社ニコン | Parallel system stereo microscope objective lens |
KR20190104077A (en) | 2017-10-03 | 2019-09-05 | 닛폰세이테츠 가부시키가이샤 | Steel plate and manufacturing method of steel plate |
Also Published As
Publication number | Publication date |
---|---|
JPS6132646B2 (en) | 1986-07-28 |
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