公开(公告)号：US2743646A

公开(公告)日：1956-05-01

申请号：US28837352

申请日：1952-05-17

Applicant: STRONG JOHN D

Inventor： STRONG JOHN D

IPC: G01J3/12

CPC classification number: G01J3/12

公开(公告)号：US2200646A

公开(公告)日：1940-05-14

申请号：US19305738

申请日：1938-02-28

Applicant: STRONG JOHN D ,  ROGER HAYWARD

Inventor： STRONG JOHN D ,  ROGER HAYWARD

IPC: G03B21/62

CPC classification number: G03B21/625

公开(公告)号：US3531991A

公开(公告)日：1970-10-06

申请号：US3531991D

申请日：1967-07-28

Applicant: STRONG JOHN D ,  JOHN F MCCLELLAN

Inventor： STRONG JOHN D ,  MCCLELLAN JOHN F

IPC: G01J5/00 ,  G01K3/02

CPC classification number: G01J5/08 ,  G01J5/0846 ,  G01J5/0887 ,  G01J2005/0092 ,  G01W1/17

公开(公告)号：US2751816A

公开(公告)日：1956-06-26

申请号：US24627051

申请日：1951-09-12

Applicant: STRONG JOHN D

Inventor： STRONG JOHN D

IPC: G02B5/08

CPC classification number: F21V7/09 ,  G02B5/08

公开(公告)号：US2646650A

公开(公告)日：1953-07-28

申请号：US12579049

申请日：1949-11-05

Applicant: STRONG JOHN D

Inventor： STRONG JOHN D

IPC: B23F19/02

CPC classification number: B23F19/02

公开(公告)号：US3674330A

公开(公告)日：1972-07-04

申请号：US3674330D

申请日：1971-01-22

Applicant: STRONG JOHN D

Inventor： STRONG JOHN D

IPC: G02B13/14 ,  G02B1/02

CPC classification number: G02B13/14 ,  G02B13/146

Abstract: THE ACHROMATIC DOUBLET LENS DISCLOSED HEREIN EMPLOYS A PAIR OF OPTICAL ELEMENTS, EACH OF WHICH IS CONSTRUCTED OF A RESPECTIVE INFRARED TRANSPARENT ALKALI HALIDE. BY APPROPRIATELY SELECTING THE TWO ALKALI HALIDE IN ACCORDANCE WITH THE TEACHING OF THE PRESENT INVENTION, THE RESULTING DOUBLET IS CAUSED TO THE SUBSTANTIALLY ACHROMATIC OVER A USEFUL RANGE OF WAVELENGTHS, RATHER THAN JUST AT A PAIR OF PRESELECTED WAVELENGTHS AS WOULD BE THE CASE IF THE TWO INFRARED TRANSPARENT MATERIALS WERE ARBITRARILY SELECTED.

公开(公告)号：US2575367A

公开(公告)日：1951-11-20

申请号：US16523750

申请日：1950-05-31

Applicant: STRONG JOHN D

Inventor： STRONG JOHN D

IPC: B23G7/00

CPC classification number: B23G7/00 ,  Y10T409/505412