Lysrefleksen er synlig; ikke desto mindre kan blendingen reduseres.

Because Norwegian usually writes compound nouns as a single word.

• lys = light
• refleks = reflection

So lysrefleks is one compound noun, and lysrefleksen is its definite form. English often writes similar ideas as two words, so this is a very common thing for learners to notice.

The -en ending marks the definite singular for many common-gender nouns in Bokmål.

So:

• en lysrefleks = a light reflection
• lysrefleksen = the light reflection

and

• en blending = a glare/dazzling effect
• blendingen = the glare

In Norwegian, definiteness is often added to the end of the noun instead of using a separate word like the.

Synlig is an adjective meaning visible, used here after er as a predicative adjective.

• Lysrefleksen er synlig = The light reflection is visible.

It stays in its basic form here because the subject is singular. In the plural, you would normally get synlige:

• Lysrefleksene er synlige = The light reflections are visible.

Also, adjectives ending in -ig often do not add -t in the neuter singular, so synlig is a fairly stable form.

Ikke desto mindre means nevertheless, nonetheless, or even so.

It is a fixed expression and sounds a bit formal or written. In everyday Norwegian, many speakers would more often say likevel.

Compare:

• Ikke desto mindre kan blendingen reduseres. = Nevertheless, the glare can be reduced.
• Likevel kan blendingen reduseres. = Still / nevertheless, the glare can be reduced.

So the original sentence is perfectly correct, but somewhat formal in style.

No. In this expression, ikke is part of the fixed phrase ikke desto mindre. You should understand the whole phrase together, not word by word.

So here it does not mean that something is being directly negated. The whole expression functions like nevertheless or all the same.

This is similar to how English speakers usually understand nonetheless as one connector, not as a fresh logical negation in the sentence.

Because Norwegian main clauses normally follow the V2 rule: the finite verb comes in the second position.

Here, ikke desto mindre takes the first position in the clause, so the finite verb kan must come next:

• Ikke desto mindre = position 1
• kan = position 2
• blendingen = subject after the verb

So:

• Ikke desto mindre kan blendingen reduseres.

If you put the subject first, you would get:

• Blendingen kan ikke desto mindre reduseres.

That is also grammatical, but it has a slightly different emphasis.

Yes. Reduseres is passive here, so kan reduseres means can be reduced.

That is why the sentence does not say who reduces the glare. The focus is on the fact that reduction is possible, not on the person or method.

Compare:

• kan reduseres = can be reduced
• kan redusere blendingen = can reduce the glare

The first is passive; the second is active.

Both are possible, but they are slightly different ways of expressing the passive.

• kan reduseres = can be reduced
• kan bli redusert = can become / be reduced

The -s passive in reduseres is compact and common in formal, technical, or written language. That fits the style of this sentence.

The bli-passive is also very common, and sometimes feels a bit more explicit or conversational.

They are related, but not the same thing.

• lysrefleks refers to a light reflection or reflected bright spot
• blending refers to glare or dazzling light that makes seeing difficult or uncomfortable

So the sentence is saying something like: the reflection is still visible, but the unpleasant glare can still be reduced.

That contrast is important: visibility of the reflection does not necessarily mean the glare cannot be improved.

The semicolon links two closely related independent clauses:

• Lysrefleksen er synlig
• ikke desto mindre kan blendingen reduseres

A semicolon is stronger than a comma but weaker than a full stop. It gives the sentence a formal, neat written style.

You could also write:

• Lysrefleksen er synlig. Ikke desto mindre kan blendingen reduseres.
• Lysrefleksen er synlig, men blendingen kan likevel reduseres.

The semicolon is just a stylistic choice.

They might, but it sounds more formal and written than casual speech.

A more everyday version might be:

• Lysrefleksen er synlig, men blendingen kan likevel reduseres.
• Lysrefleksen er synlig, men man kan likevel redusere blendingen.

So the original sentence is natural Norwegian, but it has a somewhat polished, technical, or formal tone.