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1X RMS Infinity Objective


 
eBay item number:   234602507955
Condition:   New
Mounting:   RMS 20.2mm thread
Connection distance:   195mm
Appropriate microscope:   biological microscope
Material:   Aluminum Alloy + Optical Glass

DESCRIPTION

1x2 195 Infinity Achromatic Objective Lens Low Magnification RMS Thread Biological Microscope Accessory

Function:
Lens for 195 Low Magnification RMS Threaded Biological Microscope

Features:
international standard RMS thread, universal thread diameter 20.2mm.
For medium and high grade microscope, meet the needs of low times.

Product specifications
Magnification: 1X or 2X
Connection distance: 195mm
Mounting: RMS 20.2mm thread
Appropriate microscope: biological microscope
Material: Aluminum Alloy + Optical Glass


Ordered 29 June 2022;  received 13 July
Shipped in a proper objective jar, packaged in a bubble-lined envelope.
The objective appears to be in a single solid metal casting
and appears undamaged, but cannot focus in my AO 120 infinity microscope.
FWIW, also cannot focus in (finite) Optiphot; return requested.
Front optic is recessed about 1mm into the casting.

vendor offered $15 refund Jul 14
I tested further by holding it backward for far distant view (nearly infinite).
Good infinity objectives can focus a far image on ground glass
at nearly their working distance, but this cannot focus at any distance.
It nearly focuses when touching ground glass, so negative working distance?
Optical elements may be shifted inside, but I sense no looseness.

15 Jul video demonstrating its inability to focus in comparison with another objective:

Nikon PL 60 /0.85 160/0

eBay item number:   185537948659
Condition:   Used
received 3 Sep 2022
Optics are corrupted:

.. should show LCD monitor subpixel matrix.
Provoked completion of Afocal clamp for CT phase telescope.

Nikon E Plan 4x / 0.10 160/-

eBay item number:   234666828369
Condition:   Used
Lightly used in excellent optical condition,
a little wear to the lettering is the only cosmetic imperfection to note.

NIKON 10x E 10/0.25 160/-

eBay item number:   265157044889
Condition:   Used
Shipped with USPS First Class.
In good shape with small blemishes.

Nikon E Plan 10/0.25 LWD 160/

eBay item number:   175253478879
Condition:   Used

26 Aug
received E Plan 10/0.25 LWD from Don Dawson

Nikon E Plan 20 / 0.4 160 / 0.7

eBay item number:   194054938657
Condition:   Used
Please note that most of the lettering has been rubbed off this objective
 
 
received 28 Aug 2022

Nikon 40x 0.65 160/0.17, Good Condition

eBay item number:   115380036288
Condition:   Used
Shipped with USPS First Class.
- WORKS FINE, COMES AS SHOWN
- COSMETIC CONDITION IS GOOD, VERY CLEAN, NO SCRATCHES, NO HAZE, NO FUNGUS
- WHAT YOU SEE IN THE PHOTOS IS THE ITEM FOR SELL, NO OTHER ACCESSORIES etc ARE INCLUDED

CFI BE Plan Achromat 4x

Nikon BD Plan 60x 0.80 210mm

eBay item number:   325081366516
Condition:   Used
Excellent condition
The Microscope Shop
received 4 Sep 2022
Nice, working distance too short to focus on calibration target from backside.
BD 40x; click for full resolution:
BD 60x; click for full resolution:

Nikon Microscope Objective BD Plan 60x0.70 ELWD 210/0 M26 Thread

eBay item number:   304609136243
Condition:   Used
The edge of the front lens was cracked, but testing did not affect imaging.
received 23 Sep 2022

Damage appears no worse than in eBay images; it easily passes monitor subpixel viewing test.
In the Optiphot, it is neither fully parfocal and parcentric with the BD Plan 60/0.80,
and contrast is noticeably lower, but an acceptable trade-off for sustantially increased working distance.

Nikon M Plan 40 0.5 ELWD 210/0

eBay item number:   363942029735
Condition:   Used

COMES AS SHOWN! Acquired from a reliable source. No means to test.