Post Contents [hide]

  1. Introduction
  2. Objective power
  3. Aberrations correction
  4. Other features
  5. LOMO objective parameters
    1. A. OBJECTIVES FOR WORKING IN TRANSMITTED LIGHT
      1. I. ACHROMATIC OBJECTIVES
        1. a) for biological microscopes
        2. b) for polarizing microscopes
        3. c) for phase-contrast devices
        4. d) for a phase-darkfield device
        5. e) for fluorescent microscopes
        6. f) for fluorescent microscopes combined with phase-contrast devices
        7. g) for gelatine emulsion research
      2. II. PLANACHROMATIC OBJECTIVES
        1. a) for biological microscopes
        2. b) for polarizing microscopes
      3. III. APOCHROMATIC OBJECTIVES
        1. a) for biological microscopes
        2. b) for phase-contrast devices
        3. c) for a phase-drakfield device
        4. d) for fluorescent microscopes
        5. e) for gelatine emulsion research
      4. IV. PLANAPOCHROMATIC OBJECTIVES
      5. V. SPECIAL OBJECTIVES FOR WORKING IN TRANSMITTED LIGHT
        1. a) mirror  and mirror-lens objectives for ultraviolet and visible part of spectrum
        2. b) ultraviolet (quartz-fluorite) objectives
        3. c) mirror-lens objectives for infrared part of spectrum
        4. d) objectives for macrophotography (microplanars)
    2. B. OBJECTIVES FOR WORKING IN REFLECTED LIGHT
      1. I. ACHROMATS FOR 190MM TUBE
        1. a) for biological microscopes
        2. b) for polarizing microscopes
        3. c) for fluorescent microscopes
        4. d) epiobjectives for biological microscopes
        5. e) epiobjectives for fluorescent microscopes
      2. II. ACHROMATS FOR INFINITY TUBE
        1. a) for metallographic microscopes, bright field
        2. b) epiobjectives for metallographic microscopes, bright and dark field
      3. III. PLANACHROMATS FOR INFINITY TUBE
      4. IV. APOCHROMATS FOR INFINITY TUBE
      5. V. PLANAPOCHROMATS FOR INFINITY TUBE
      6. VI. MIRROR-LENS OBJECTIVES FOR INFINITY TUBE
      7. VII. PLANMONOCHROMATS FOR GELATINE EMULSION RESEARCH
      8. VIII. OTHER OBJECTIVES

Introduction

LOMO microscope objectives offer good quality/price ratio.

We have some old stock LOMO objectives for sale, and here is some info on them compiled together for your convenience. The info comes from a couple of reference books. The theory below is significantly simplified, and its main purpose is to give you general ideas, not to show precise physics of light.

A microscope objective creates a real, inverted and enlarged image of the object. The main parameter of the objective is its power (magnification factor). The most common objectives provide 3x - 90x magnifications.

Another important objective parameter is a numerical aperture that affects the objective resolution. Common numeric apertures are from 0.02 to 1.40.

Definition: Numerical Aperture is a dimensionless number that characterizes the range of angles over which the objective can accept light. It is a measure of the ability of an optical system to gather and resolve fine details of an object.

Formula: NA is calculated using the formula NA = n * sin(α), where n is the refractive index of the medium between the lens and the specimen, and α is the half-angle of the maximum cone of light that can enter the objective.

Importance: Higher NA values generally correspond to better resolution and improved image quality.

As you noticed, NA depends on the refractive index of medium. For example, this index is 1.0 for air, 1.33 for water, 1.515 for cedar oil.

That is why immersion objectives were invented. Adding a drop of a liquid between the objective and specimen may significantly improve the system resolution and image quality.

Numerical aperture

Immersion

Total microscope magnification is the objective power multuplied by the eyepiece power. For example, 40x objective and 15x eyepiece will give you 40x15 = 600x magnification.

The practical limit of light microscope magnification is generally around 1000x to 2000x. This limit is determined by several factors related to the physics of light and the capabilities of optical systems. Beyond this range, the limitations of optical microscopy become more pronounced, and alternative techniques such as electron microscopy are often employed for higher magnifications. That is why you will not find a LOMO objective with larger than 125x power, or LOMO microscope eyepiece with larger than 17x power (2125x total magnification that is slightly beyond the practical limit). Other manufacturers may have even 500x objectives, but I don't know how well they perform with their relatively low (0.75) numerical aperture.

Objective power

Based on the magnification and numeric aperture, microscope objectives are grouped to low power, medium power and high power.

Low power objectives have 0.02 - 0.25 numeric aperture and 1x - 10x magnification. Such objectives have long work distance and large field of view.

Medium power objectives have 0.30 - 0.65 numeric aperture and 10x - 40x magnification. Their work distances are 0.5 - 8mm, and their field of view is 0.2 - 2mm.

High power objectives have 0.7 - 1.60 numeric aperture and 40x - 125x magnification. They have very short work distances (down to hundredths of a mm).

Aberrations correction

Different objectives have different degrees of aberration correction.

Achromats are most simple optical systems. Their chromatic aberration is corrected for two wavelengths. The image they produce have some color tint.

Achromatic objectives give sharp enogh image in the center , but image is soft at the edge of the field of view due to curvature.

Image quality of achromats is suitable for usual everyday applications like observing or picking an object.

These objectives are divided into a few groups:

1) objectives for transmitted light, 160mm tube length, 0.17mm cover glass;

2) objectives for reflected light, 190mm or infinity tube length, without cover glass;

3) epiobjectives for reflected light, bright or dark field, 190mm or infinity tube length, without cover glass.

Achromats of low and medium power are used with Huygens eyepieces. Objectives of high power are used with compensating eyepieces.

Achromatic objectives are widely used in biology, mineralogy, metallography.

Apochromats have better optical system. Their chromatic aberration is corrected for three wavelengths. The image they produce is colorless. Their chromatic aberrations are about 10 times lower than with achromats.

To achieve this degree of correction, these objectives use more complex optical construction and special glass, including fluorite and quartz.

All apochromat objectives have chromatic magnification aberration, and you should use compensating eyepieces with them therefore.

Also, they have some image field curvature. This can be compensated with homal eyepieces.

Apochromats can be divided into two groups:

1) objectives for transmitted light, 160mm tube, 0.17mm cover glass;

2) objectives for reflected light, 190mm or infinity tube, without cover glass.

You should always use compensating eyepieces with achromatic objectives.

Planachromats and Planapochromats contain 9-12 glass elements. Theu have flat field of view evenly sharp in the center and at the edge. They usually have wider field of view, and can be used with wide-angle eyepieces that is useful for taking photos. Also, they have increased to 45mm parfocal height.

Planobjectives are divided into two groups:

1) planachromats for transmitted light, 160mm tube length, 0.17mm cover glass;

2) planobjectives for reflected light, infinity tube, wuthout cover glass.

These objectives are usually used with compensation eyepieces for microphotohraphy and microprojection.

Special objectives are made for particular microscopes.

1) objectives for gelatine emulsion researches are purposed for MBI-8M, MBI-9 and MIRE-2 microscopes;

2) objectives for ultraviolet light are purposed for MUF-5 and MUF-6 microscopes. They are made of few types - quartz-fluorite, mirror, mirror-lens.

3) objectives for infrared light are purposed for infrared microscopes;

4) microplanaras are purposed for macrophotorgaphy with FMN-2 device.

Other features

Objectives can use different media between their front element and object. This can be air (dry objectives) or liquid (immersion objectives). Immersion objectives have a band of corresponding color - black for oil and glycerine immersion, white for water immersion.

 

Other important parameters are tube length, work distance and parfocal height.

Tube length is a microscope tube distance from the objective flange to the eyepiece flange. Common distances for LOMO objectives are 160mm and 190mm. Infinity tube means that there is an additional achromatic lens is installed in the tube behind the objective.

Work distance is a distance from the top surface of a cover glass to the first objective glass holder.

Parfocal height is a distance from the object plane to the objective flange.

Simple microscope diamgram

 

Some general info about objective body marks.

  • А - objectives for research using the phase-dark-field contrast method
  • Л - objectives for research in luminescence light
  • П - objectives for research in polarized light
  • Ф - objectives for phase contrast research
  • АЛ - objectives for dark-field contrast method research in luminescence light
  • ЛК - contact objectives for fluorescent microscopes
  • ФЛ - objectives for phase contrast research in luminescence light
  • ВИ - water immersion
  • ГИ - glycerine immersion
  • МИ - oil immersion
  • АПО - apochromatic objective
  • ПЛАН - planachromatic objective
  • ПЛАН-АПО - planapochromatic objective

LOMO objective parameters

I'll gradually add links to objectives in our catalog for convenience. Please check back later.

Objective codePowerNumeric apertureFocal length, mmImmersionWork distance, mmParfocal height, mmMarks/linksNotes

A. OBJECTIVES FOR WORKING IN TRANSMITTED LIGHT

I. ACHROMATIC OBJECTIVES

(160mm tube length, 0.17mm cover glass)

a) for biological microscopes
151.01 / OM-301x0.0333.43Dry31.0070  
151.02 / OM-123.7x0.1133.10Dry27.2050ЛОМО 3.7 0.11 
151.03 / M-428x0.2018.14Dry8.57338x 0.2 
151.04 / OM-510x0.3015.50Dry7.2433  
151.05 / OM-2720x0.408.40Dry1.703320 0.40 
151.06 / MЩ40x0.654.35Dry0.553340 0.65 
OX-140x0.654.25Dry0.7033ЛОМО 40 0.65Spring loaded tip
151.07 / OM-2340x0.754.32Water1.8032.7ЛОМО ВИ 40 0.75 
O-4040x0.604.4Dry0.7033 Narrow body
151.08 / OM-4550x1.003.60Water0.2532.7  
151.09 / OM-1460x0.852.99Dry0.1433  
151.10 / O2-6060x0.852.99Dry0.1433 Spring loaded tip
?70x1.25?Water??АПОХР ВИ 70x1.25Correction collar. Absent in old books
151.11 / OM-4385x1.02.05Water0.05 .. 0.1632.7ЛОМО ВИ 85x1.0Cover glass correction collar
OM-43-185x1.02.1Water0.0932.7 Spring loaded tip
151.13 / OM-4190x1.251.96Oil0.1032.7

ЛОМО МИ 90 1.25

МИ 90 1.25

Spring loaded tip
151.14 / OM-2490x1.25 .. 0.61.96Oil0.1032.7 Iris diaphragm
151.15 / O6M-9090x1.25 .. 0.61.96Oil0.1032.7ЛОМО МИ 90Spring loaded tip, iris diaphragm
OX-264x0.1231.4Dry6.2045ЛОМО 4 0.12 
OX-276.3x0.1724.1Dry-45  
OX-2810x0.2516.7Dry5.0745ЛОМО 10 0.25 
OX-2916x0.4012.0Dry1.7645  
OX-3040x0.654.66Dry0.5845ЛОМО 40 0.65 160/0.17 
OX-3160x0.853.01Dry0.1945  
OX-32100x1.251.89Oil0.1145100/1.25 160/0.17 
ОХ-10-110x0.30 Dry6.845ЛОМО 10 0.30 160/0.17 
ОХ-25-125x0.507.07Dry1.445ЛОМО 25 0.50 160/0.17 
ОХ-5050x1.0 .. 0.7 Oil0.1545ЛОМО МИ 50x1.0 160/0 
b) for polarizing microscopes
151.31 / OM-27П20x0.408.40Dry1.7033ЛОМО П 20 0.40Letter П on the body
151.32 / МЩ-П40x0.654.35Dry0.5533П 40 0.65Letter П on the body
151.33 / O2-60П60x0.852.99Dry0.1433ЛОМО П 60 0.85Spring loaded tip, letter П on the body
151.34 / OM-41П90x1.251.96Oil0.1032.7 Spring loaded tip, letter П on the body
151.35 / OM-14П60x0.852.99Dry0.1433 Letter П on the body
151.36 / ОСФ-11П11x0.4014.75Dry13.0051П ЛОМО 11 0.40Iris diaphragm. Magnification with a segment is 16.4x.
151.37 / ОСФ-14П14x0.2211.60Dry13.7350 Iris diaphragm. Magnification with a segment is 22.4x.
151.38 / ОСФ-22П22x0.126.67Dry16.3948  
151.39 / ОСФ-26П26x0.195.99Dry15.9050  
151.40 / ОМП-3.73.7x0.1133.10Dry27.250  
151.41 / ОМП-5.55.5x0.1624.45Dry16.037  
151.42 / ОСФ-53.8x0.1133.00Dry27.0049 Iris diaphragm. Magnification with a segment is 5.2x.
ОСФ-6П6.40.1721.6Dry14.250 Iris diaphragm. Magnification with a segment is 10.0x.
         
c) for phase-contrast devices
151.51 / ФОМ-510x0.3015.5Dry7.2433ЛОМО Ф 10 0.30Letter Ф on the body
ФОМ-5Л ?10x0.3015.5Dry7.2733ЛОМО ФЛ 10 0.30Marked ФЛ on the body
151.52 / ФОМ-2720x0.408.4Dry1.7033ЛОМО Ф 20 0.40Letter Ф on the body
151.53 / ФОМ-27-220x0.408.4Dry1.7033 2 phase rings. Mark Ф-2 on the body.
151.54 / Ф-МЩ40x0.654.35Dry0.5533ЛОМО Ф 40 0.65Letter Ф on the body
151.55 / ФМЩ-240x0.654.35Dry0.5533Ф-2 ЛОМО 40 0.652 phase rings. Mark Ф-2 on the body.
151.56 / ФОМ-2340x0.754.32Water1.8032.7 Letter Ф on the body
151.57 / ФОМ-4190x1.251.96Oil0.1032.7

ФМИ 90 1.25

 

Letter Ф on the body
?90x1.25 Oil  

ЛОМО Ф МИ 90 1.25

Spring loaded tip
151.58 / ФОМ-41-290x1.251.96Oil0.1032.7 Mark Ф-2 on the body
         
d) for a phase-darkfield device
151.66 / A-OM-2720x0.408.40Dry1.7033ЛОМО ФА 20 0.40Mark ФА on the body
151.67 / А-МЩ40x0.654.35Dry0.5533ЛОМО ФА 40 0.65Mark ФА on the body
151.68 / A-OM-4190x1.251.96Oil0.1033ЛОМО ФА МИ 90 1.25Mark ФА on the body
         
e) for fluorescent microscopes
151.76 / OM-33Л10x0.4015.98Dry3.0833ЛОМО Л 10 0.40Letter Л on the body
151.77 / OM-33ЛO10x0.4015.98Dry3.0833 Letter Л on the body
151.78 / OM-27Л20x0.408.4Dry1.7033ЛОМО Л 20 0.40Letter Л on the body
151.79 / O5B-30Л30x0.905.49Water1.1632.7ЛОМО Л ВИ 30x0.90Letter Л on the body
151.80 / МЩ-Л40x0.654.35Dry0.5533 Letter Л on the body
151.81 / МЩ-ЛО40x0.654.35Dry0.5533 Letter Л on the body
151.82 / OM-23Л40x0.754.32Water1.8032.7ЛОМО Л ВИ 40 0.75Letter Л on the body
151.83 / OM-41Л90x1.251.93Oil0.1032.7Л МИ 90 1.25Letter Л on the body
         
f) for fluorescent microscopes combined with phase-contrast devices
151.91 / Ф-ОМ-5Л10x0.3015.50Dry7.2433 Mark ФЛ on the body
151.92 / Ф-МЩ-Л40x0.654.35Dry0.5533ЛОМО ФЛ 40 0.65Mark ФЛ on the body
151.93 / Ф-ОМ-41Л90x1.251.96Oil0.1032.7ФЛ ЛОМО МИ 90 1.25Mark ФЛ on the body
         
g) for gelatine emulsion research
151.96 / OM-3290x1.252.02 .. 1.95Oil0.30 .. 0.1232.7МИ-ЖЕЛ 90x1.25Correction collar. Gelatine layes thicknes is 0-0.25mm
         

II. PLANACHROMATIC OBJECTIVES

(160mm tube length, 0.17mm cover glass)

a) for biological microscopes
152.01 / OM-33.5x0.1029.92Dry23.4036.5ЛОМО ПЛАН 3.5x0.10Mark ПЛАН on the body
152.02 / OM-29x0.2015.50Dry13.5033ЛОМО ПЛАН 9x0.20Mark ПЛАН on the body
152.03 / OM-3120x0.408.49Dry0.1633ЛОМО ПЛАН 20 0.40Mark ПЛАН on the body
152.04 / OM-2940x0.654.22Dry0.8533 Mark ПЛАН on the body
ОПХ-1010x0.2016.5Dry8.245П ПЛАН 20 0.40 
ОПХ10Л10x0.2216.5?Dry14.045ЛОМО Л ПЛАН 10x0.22 
b) for polarizing microscopes
152.21 / OM-3П3.5x0.1029.92Dry23.436.5 Mark П on the body
152.22 / OM-2П9x0.2015.50Dry12.938.0ЛОМО П ПЛАН 9x0.20Mark П on the body
ОПХ-2.5П2.5x0.0562.5Dry9.045ЛОМО П ПЛАН 2.5 0.05 
ОПХ-25П25x0.506.5Dry0.5545 Iris diaphragm
ОПХ-40П40x0.654.0Dry0.4445ЛОМО П ПЛАН 40 0.65Spring loaded tip
ОПХ-60П60x0.852.7Dry0.2245 Spring loaded tip
         

III. APOCHROMATIC OBJECTIVES

(160mm tube, 0.17mm cover glass)

a) for biological microscopes
153.01 / OC-66x0.1525.59Dry7.0045.8  
153.02 / OM-810x0.3015.10Dry4.8033ЛОМО АПО 10 0.30 
OM-1810x0.3015.1Dry4.8033 Spring loaded tip
153.03 / OM-2120x0.658.43Dry0.6733ЛОМО АПО 20 0.65Spring loaded tip
153.04 / OM-1640x0.954.40Dry0.12 .. 0.2233ЛОМО АПО 40x0.95Correction collar
153.05 / OM-1560x1.0 .. 0.73.01Oil0.2232.7

АПОХР 60 МИ ЖЕЛ

АПОХР 60

АПО 60

Iris diaphragm
153.06 / O6AM-6060x1.0 .. 0.73.01Oil0.2232.7ЛОМО АПО 60Iris diaphragm, spring loaded tip
153.07 / OHA-6060x1.302.99Oil0.2832.7 Spring loaded tip
153.08 / OM-2570x1.232.52Water0.14 .. 0.0432.7ЛОМО АПО-ВИ 70x1.23Correction collar
O2AM-9090x1.302.0Oil0.1032.7 Spring loaded tip
OAB-6060.9x1.02.9Water0.7632.7  
OAB-6565x1.12.7Water0.1932.7  
153.09 / OM-2090x1.302.00Oil0.1032.7АПО-МИ 90 1.30 
153.10 / OHA-9090x1.302.00Oil0.1032.7ЛОМО АПО-МИ 90 1.30Spring loaded tip
         
b) for phase-contrast devices
153.41 / Ф-ОМ-2570x1.252.52Water-32.7АПОХР ВИ 70x1.23ФCorrection collar, letter Ф on the body.
153.42 / Ф-ОМ-25-270x1.232.52Water0.14 .. 0.0432.7 Correction collar, marked Ф-2 on the body (2 phase rings).
         
c) for a phase-drakfield device
153.51 / A-OM-2570x1.232.52Water0.0732.7 Marked ФА on the body
 153.52 / O2-AB-70A70x1.232.52Water0.0732.7ФА ЛОМО АПО-ВИ 70 1.23Spring loaded tip
         
d) for fluorescent microscopes
OM-21Л20x0.658.43Dry0.6733Л АПО 20 0.65 
?60x1.0?Water??ЛОМО Л ФПО-ВИ 60x1.0 D=0Absent in old reference books
153.61 / OM-25Л70x1.232.52Water0.0732.7Л ЛООМП АПО-ВИ 70x1.23Letter Л on the body
ОАВ-65Л65x1.12.7Water0.1932.7ЛОМО Л АПО-ВИ 65 1.1Letter Л on the body
153.62 / O2-AB-70Л70x1.232.52Water0.0732.7ЛОМО Л АПО-ВИ 70 1.23Letter Л on the body, spring loaded tip
OM-43Л85x1.02.05Water0.05 .. 0.1632.7ЛОМО ВИ 85x1.0 ЛCorrecttion collar
e) for gelatine emulsion research
153.81 / OC-2020x0.808.40Oil1.1032.7АПО-МИ 20 0.80 ЖЕЛ.0-09Gelatine layer thickness 0-0.90mm
153.82 / OC-2260x1.253.03 .. 2.95Oil0.4032.7 Correction collar. Gelatine layer thickness 0-0.25mm
         

IV. PLANAPOCHROMATIC OBJECTIVES

(for biological, bacteriological and other researches)

ОПА-110x0.3015.8Dry5.245ПЛАН-АПО 10 0.30 
ОПА-216x0.409.6Dry0.6445ПЛАН-АПО 16 0.40 
ОПА-340x0.653.9Dry0.3145ПЛАН-АПО 40 0.65Spring loaded tip
ОПА-460x0.852.6Dry0.2345ПЛАН-АПО 60 0.85 0.17±0.01Spring loaded tip
ОПА-5100x1.251.5Oil0.1545ПЛАН-АПО-МИ 100x1.25 
ОПА-625x0.506.5Dry0.6145 Spring loaded tip
ОПА-4040x0.654.0Dry0.7245  
ОПА-6060x0.902.7Dry0.2245 Spring loaded tip

V. SPECIAL OBJECTIVES FOR WORKING IN TRANSMITTED LIGHT

a) mirror  and mirror-lens objectives for ultraviolet and visible part of spectrum
154.01 / OK-4040x0.504.3Dry2.033 УФ 40 0.50211-800nm
154.02 / OHЗ-75A75x0.652.32Dry0.2333 243-589nm
154.03 / OK-7575x1.02.20Glycerine0.2532.7 250-589nm
154.04 / OK-9190x1.02.07Glycerine0.2732.7 250-600nm
154.05 / OHЗ-115115x0.701.50Dry0.1936 243-589nm
154.06 / OHЗ-125125x1.101.45Glycerine0.2532.7ГИ 125 1.1250-589nm
         
b) ultraviolet (quartz-fluorite) objectives
154.21 / OK-55x0.0824.89Dry17.0033 230-589nm
154.22 / OK-10-310x0.2015.29Dry6.6133.2 250-330nm
OK-12020x0.408.3Dry0.2233ЛОМО УФ 20 0.40260-280nm; 300-380nm; 350-380nm; 380-434nm
154.23 / OK-5048x0.653.61Dry0.1032.4 250-313nm
154.24 / OK-5858x0.803.09Water0.1130ВИ 58 0.80 УФ248-280nm
         
c) mirror-lens objectives for infrared part of spectrum
154.41 / ОЗ-10ИК10x0.3018.44Dry3.86 .. 2.4937.2 Correction collar. 1050-2200nm
ОНЗ-1040x0.504.2Dry5.033 1000-7000nm
ОР-75ИК75x0.652.4Dry0.2033.5 700-4500nm
ОР-40ИК40x0.704.6Dry1.667 700-5000nm
154.42 / OPM-75ИК74x1.002.10Oil0.2832.7ЛОМО МИ 75 1.0800-1600nm
         
d) objectives for macrophotography (microplanars)
154.61 / ОП-1515x1:4.540.00   МИКРОПЛАНАР 1:4.5 F-40Iris diaphragm
154.62 / ОП-1610x1:4.565.00   МИКРОПЛАНАР 1:4.5 F-65Iris diaphragm
154.63 / ОП-175x1:4.5100.00   МИКРОПЛАНАР 1:4.5 F=100Iris diaphragm
154.64 / ОП-1110.5x-1.0x1:6.3150.00   КОРРЕКТАР 1:6.3 F=150Iris diaphragm
         

B. OBJECTIVES FOR WORKING IN REFLECTED LIGHT

I. ACHROMATS FOR 190MM TUBE

a) for biological microscopes
155.01 / OM-821x0.408.40Dry1.8014.4  
155.02 / OM-940x0.654.59Dry0.5012.3  
155.03 / OM-1095x1.251.96Oil0.0612.2ЛОМО МИ 95x1.25 190 
         
b) for polarizing microscopes
155.11 / OM-12П4.7x0.1133.10Dry25.4048.0П ЛОМО 4.7x0.11 190Letter П on the body
155.12 / OM-13П9x0.2018.14Dry8.1425.0 Letter П on the body
155.13 / OM-38П11x0.2516.00Oil0.5027.6 Letter П on the body
155.14 / OM-8П21x0.408.40Dry1.8014.4ЛОМО 21x0.40 190-ПLetter П on the body
155.15 / OM-44П30x0.656.16Oil0.4020.75ЛОМО МИ 30x0.65 190-ПLetter П on the body
155.16 / OM-9П40x0.654.59Dry0.5012.3ЛОМО 40x0.65 190-ПLetter П on the body
155.17 / OM-10П95x1.251.96Oil0.0612.2 Letter П on the body
         
c) for fluorescent microscopes
155.21 / OM-10Л95x1.251.96Oil0.0512.2 Letter Л on the body
155.22 / ОД-10ЛК10x0.4020.59Dry 43.5ЛОМО ЛК 10x0.40 190Marked ЛК on the body (contact, d=0.1mm)
155.22 / ОД-25ЛК24.25x0.7511.24Dry 39.0ЛОМО ЛК 25x0.75 190Marked ЛК on the body (contact, d=0.036mm)
ОД-40ЛК40x1.004.84Gelatine0.1138.7 Correction collar
ОЭ-10ЛК10x0.3010.7Gelatine0.1041.1  
ОЭ-20ЛК20x0.6011.2Gelatine0.0230.7  
155.22 / О-60ЛК60x1.253.18Oil 31.0 Marked ЛК on the body (contact, d=0-0.024mm)
 43x1.0    ЛОМО ЛК 190 43x1.0 
 60x1.15    ЛОМО ЛК 60x1.15 190 
d) epiobjectives for biological microscopes
155.31 / ОЭ-99x0.2018.4Dry5.4025.0ЛОМО 9x0.20 190 
155.32 / ОЭ-2121x0.408.4Dry1.8014.4  
155.33 / ОЭ-4040x0.654.59Dry0.6112.4ЛОМО 40x0.65 190 
155.34 / ОЭ-9595x1.02.0Oil0.4112.5  
         
e) epiobjectives for fluorescent microscopes
155.41 / ОЭ-9Л9x0.2018.40Dry5.4025.0 Letter Л on the body
155.42 / ОЭ-21Л21x0.408.40Dry1.8014.4ЛОМО Л 21x0.40 190Letter Л on the body
155.43 / ОЭ-40Л40x0.654.59Dry0.6112.4 Letter Л on the body
         

II. ACHROMATS FOR INFINITY TUBE

a) for metallographic microscopes, bright field
155.51 / OX-23-0.1723.2Dry6.2033  
155.52 / OX-14-0.3013.9Dry5.7133  
155.53 / OX-6-0.656.2Dry0.8233  
155.54 / OX-3-1.252.8Oil0.4025МИ F-2.8x1.25 
OC-39-0.1225.0Dry10.0029  
OC-40-0.3013.9Dry5.7129  
OC-41-0.378.2Dry2.6829F-8.2 0.37 
OC-42-0.504.3Dry0.7429ЛОМО F-4.3 0.50 
b) epiobjectives for metallographic microscopes, bright and dark field
155.61 / ОЭ-23-0.1723.2Dry5.431.5F=23.2 0.17 
155.62 / ОЭ-14-0.3013.9Dry5.431.5  
155.63 / ОЭ-8-0.378.2Dry2.631.5  
155.64 / ОЭ-6-0.656.2Dry0.631.5  
ОЭ-4-0,1725Dry5.4033  
ОЭ-2-0.4010Dry2.6033  
ОЭ-1-0.656.3Dry0.6333  
155.65 / ОЭ-3T-1.002.8Oil0.631.5  
         

III. PLANACHROMATS FOR INFINITY TUBE

for bright field

ОБП-40-0.1040.6Dry23.045  
?-0.2525Dry??Д=0 ПЛАН F=25 A=0.25Absent in old reference books
ОПХ-3-0.656.3Dry0.645ПЛАН F=6.3 0.65 
for bright and dark field
ОЭ-5-0.656.3Dry0.6945ПЛАН F=6.3 0.65 

IV. APOCHROMATS FOR INFINITY TUBE

(for metallographic microscopes)

155.71 / OC-16-0.3015.7Dry4.9033АПОХР F-15.7 A-0.30 ТУБУС ∞ 
155.72 / OC-8-0.658.4Dry0.8233АПОХР F-8.37 A-0.65 ∞ 
155.73 / OC-4-0.954.3Dry0.1833АПОХР F-4.3 A-0.95 ∞ 
155.74 / OC-3-1.302.8Dry0.1825  
155.75 / OC-3T-1.002.8Dry0.5325ЛОМО АПО-МИ F-2.8x1.0 

V. PLANAPOCHROMATS FOR INFINITY TUBE

ОПА-11-0.854.0Dry0.2945ПЛАН-АПО F=4 0.85Spring loaded tip
ОПА-12-1.252.5Oil0.2545 Spring loaded tip
ОПА-9-0.510.0Dry0.8045ПЛАН-АПО F=10 0.50 
for bright and dark field (epiobjectives)
МИМ-9-0.2525.4Dry4.445  
МИМ-9-0.3016.0Dry4.445  
МИМ-9-0.656.3Dry4.445  

VI. MIRROR-LENS OBJECTIVES FOR INFINITY TUBE

155.81 / ОБР-11-0.3811.46Dry15.658 253.6-766.6nm
         

VII. PLANMONOCHROMATS FOR GELATINE EMULSION RESEARCH

155.91 / ОБМЖ-1.6-1.31.6Special immersionup to 0.55   

VIII. OTHER OBJECTIVES

(I was unuable to find reliable info on them)

 20x0.45 Dry  ЛОМО CX 20x/0.45 Л ∞/0.17Stigmachromat, infinity tube, 0.17mm cover slip
  40x0.65 Dry  ЛОМО СХ 40x/0.65 Л ∞/0.17Stigmachromat, infinity tube, 0.17mm cover slip
ОШ-100Л-0-1100x1.25 Oil  ЛОМО Л ПЛАН-МИ 100 1.25 
 -0.1050Dry  Д=0 ПЛАН F=5- A=0.10 
 -0.2525Dry  ЛОМО ПЛАН F=25 0.25 
 -0.3016Dry  ЛОМО ПЛАН F=16 0.30 
 -0.3516Dry  ЛОМО Д=0 ПЛАН F=16 A=0.35 
 18x0.30 Dry  18x0.30 ТУБУС ∞ 
  40x0.65 Dry  QPA Achro 40 PH 0.65 160/0.17