FIELD: optical instrumentation engineering. SUBSTANCE: lens incorporates four components: first component cemented positive lens, second component positive meniscus, third component negative lens and fourth component positive lens. EFFECT: facilitated manufacture, enhanced operational stability. 2 cl, 8 dwg, 1 tbl
Title | Year | Author | Number |
---|---|---|---|
OBJECTIVE LENS WITH DISCRETE CHANGE OF FOCAL DISTANCE FOR NEAREST IR REGION OF SPECTRUM | 1994 |
|
RU2079154C1 |
OBJECTIVE WITH DISCRETE CHANGES IN FOCUS LENGTH FOR WIDE SPECTRAL RANGE | 1992 |
|
RU2063058C1 |
PHOTOGRAPHIC LENS | 1992 |
|
RU2044335C1 |
PORTABLE PHOTOGRAPHIC LENS | 1992 |
|
RU2036489C1 |
OBJECTIVE LENS FOR CLOSER INFRARED SPECTRUM | 2006 |
|
RU2331909C1 |
OBJECTIVE | 1996 |
|
RU2106003C1 |
STEP-VARYING-LENGTH OBJECTIVE LENS | 1996 |
|
RU2112256C1 |
TELEPHOTO LENS | 1994 |
|
RU2079863C1 |
ACHROMATIC HIGH-SPEED OBJECTIVE LENS OF MICROSCOPE | 1993 |
|
RU2084937C1 |
TELE-OBJECTIVE OF COLLIMATOR FOR NEAR INFRARED AREA OF SPECTRUM | 2003 |
|
RU2247416C1 |
Authors
Dates
1995-10-27—Published
1993-03-02—Filed