RU96122669A - LIGHT LENS FOR THE NEAR IR SPECTRUM AREA - Google Patents

LIGHT LENS FOR THE NEAR IR SPECTRUM AREA

Info

Publication number
RU96122669A
RU96122669A RU96122669/28A RU96122669A RU96122669A RU 96122669 A RU96122669 A RU 96122669A RU 96122669/28 A RU96122669/28 A RU 96122669/28A RU 96122669 A RU96122669 A RU 96122669A RU 96122669 A RU96122669 A RU 96122669A
Authority
RU
Russia
Prior art keywords
component
lens
light lens
spectrum area
curvature
Prior art date
Application number
RU96122669/28A
Other languages
Russian (ru)
Other versions
RU2104570C1 (en
Inventor
С.Н. Бездидько
Л.И. Гришина
Original Assignee
Открытое акционерное общество "Красногорский завод им.С.А.Зверева"
Filing date
Publication date
Application filed by Открытое акционерное общество "Красногорский завод им.С.А.Зверева" filed Critical Открытое акционерное общество "Красногорский завод им.С.А.Зверева"
Priority to RU96122669/28A priority Critical patent/RU2104570C1/en
Priority claimed from RU96122669/28A external-priority patent/RU2104570C1/en
Application granted granted Critical
Publication of RU2104570C1 publication Critical patent/RU2104570C1/en
Publication of RU96122669A publication Critical patent/RU96122669A/en

Links

Claims (1)

Светосильный объектив для ближней ИК области спектра, содержащий два компонента, при этом первый компонент состоит из двояковыпуклой и отрицательной линз, второй компонент выполнен в виде положительного мениска, обращенного выпуклостью к предмету, отличающийся тем, что в первом компоненте отрицательная линза выполнена в виде двояковогнутой и первая поверхность линзы второго компонента выполнена асферической, при этом имеют место следующие соотношения:
Figure 00000001

-2 < f'2/f' < -0,6;
Figure 00000002

0,1 < r5/r6 < 0,3;
0,5 < d4/f1 < 0,75;
1,45 < n3 < 1,53;
где
Figure 00000003
фокусные расстояния первой и второй линз I компонента;
f' - фокусное расстояние всего объектива;
d4 - толщина воздушного промежутка между первым и вторым компонентами;
n3 - показатель преломления линзы II компонента;
r3, r4, r6 - радиусы кривизны сферических поверхностей второй линзы I компонента и второй поверхности линзы II компонента;
r5 - радиус кривизны при вершине асферической поверхности линзы II компонента.A fast lens for the near infrared region of the spectrum containing two components, the first component consisting of a biconvex and negative lenses, the second component is made in the form of a positive meniscus convex to the object, characterized in that in the first component the negative lens is made in the form of biconcave and the first surface of the lens of the second component is aspherical, with the following relationships:
Figure 00000001

-2 <f ' 2 / f'<-0.6;
Figure 00000002

0.1 <r 5 / r 6 <0.3;
0.5 <d 4 / f 1 <0.75;
1.45 <n 3 <1.53;
Where
Figure 00000003
focal lengths of the first and second lenses of the I component;
f 'is the focal length of the entire lens;
d 4 is the thickness of the air gap between the first and second components;
n 3 is the refractive index of the lens of the II component;
r 3 , r 4 , r 6 are the radii of curvature of the spherical surfaces of the second lens of the first component I and the second surface of the lens of the second component;
r 5 is the radius of curvature at the apex of the aspherical surface of the lens of component II.
RU96122669/28A 1996-11-29 1996-11-29 Wide-aperture lens for near infrared light RU2104570C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96122669/28A RU2104570C1 (en) 1996-11-29 1996-11-29 Wide-aperture lens for near infrared light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96122669/28A RU2104570C1 (en) 1996-11-29 1996-11-29 Wide-aperture lens for near infrared light

Publications (2)

Publication Number Publication Date
RU2104570C1 RU2104570C1 (en) 1998-02-10
RU96122669A true RU96122669A (en) 1998-04-20

Family

ID=20187642

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96122669/28A RU2104570C1 (en) 1996-11-29 1996-11-29 Wide-aperture lens for near infrared light

Country Status (1)

Country Link
RU (1) RU2104570C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2711627C1 (en) * 2019-04-02 2020-01-17 Публичное Акционерное общество "Ростовский оптико-механический завод" (ПАО РОМЗ) High-aperture lens for near ir spectral range
CN111853699B (en) * 2020-08-28 2021-02-12 广东烨嘉光电科技股份有限公司 Large-aperture three-piece lens optical lens

Similar Documents

Publication Publication Date Title
JPS6457222A (en) Zoom lens for compact camera
EP1724622A3 (en) Image pick-up lens, image pick-up unit, and mobile terminal provided with this image pick-up unit
EP0332201A3 (en) Optical projection system
EP1310818A3 (en) Projection optical system
EP1653267A3 (en) Compact imaging lens having three single lenses
RU96122669A (en) LIGHT LENS FOR THE NEAR IR SPECTRUM AREA
KR890002689A (en) Optical system to increase the roughness of the periphery of the irradiated surface
RU97121366A (en) LIGHT LIGHT
RU97122300A (en) LIGHT LIGHT
RU97101424A (en) LIGHT LENS FOR THE NEAR IR SPECTRUM AREA
RU2104570C1 (en) Wide-aperture lens for near infrared light
RU2002133082A (en) EYEPIECE
RU96121214A (en) FIVE LENS LIGHT LENS
RU96104133A (en) ONE LENSES
RU97105277A (en) LENS
RU97105558A (en) VARIABLE FOCUS LENS
RU2091831C1 (en) High aperture-ratio lens (variants)
RU97109221A (en) WIDE-angle LENS WITH EXTENDED ENTRANCE
JPS56155915A (en) Reflective telephoto lens
RU96114682A (en) LIGHT LIGHT FOR THE NEAR IR SPECTRUM AREA
RU94019808A (en) LIGHTFLAST LENS
RU92016051A (en) PHOTOGRAPHIC LENS
TW330245B (en) Zoom projection lens with very long rear focal length
KR970049124A (en) Lens unit for copier
RU98105180A (en) UV LENS