SINGAPORE - A businessman who used his mobile phone to film 55 indecent videos of a female employee was sentenced to 18 weeks' jail on Friday (Nov 22).

Lin Li Hao, 46, the managing director of a manufacturing firm, was also fined $600 for having uncensored videos that he had filmed of the woman during work trips.

The Singaporean man had also filmed an indecent video each of two other women.

He had previously pleaded guilty to 15 charges of insulting the modesty of a woman, with 26 other charges of a similar nature taken into consideration during sentencing.

The court heard that the offences began when the employee, now 33, went on a business trip with Lin, during which he filmed a video of her. He committed the offence again a few years later, when he filmed her using a toilet during another business trip.

From then until May 2016, Lin continued to take videos of the woman using the toilet in the office in Jurong Industrial Estate, and filmed up her skirt on multiple occasions while she was talking to another colleague.

He also took upskirt videos of her on other occasions - while they were shopping at Great World City and while having a meal and drinks at locations not disclosed in court documents.

Lin and the woman were not in a romantic relationship at any point in time, the court heard.

In all, Lin took 55 videos of her. The woman left the company some time in 2016.

After her departure, Lin took a video of an unknown woman while she was using the toilet in his office in March 2017. He could not remember the identity of the victim, said the prosecution.

In the same month, a 28-year-old woman from an auditing firm was engaged by his company to audit the accounts and Lin filmed her while she was in the office toilet.

However, on his second attempt to do so on April 4 that year, the woman noticed a mobile phone under the door of the cubicle and dashed out of the toilet. She saw Lin along the corridor and called the police.

Lin admitted to the police that he had filmed the woman using his mobile phone, but had deleted the video.

The woman told the police that she felt harassed by Lin's actions and that his act had intruded into her privacy, said Deputy Public Prosecutor Gail Wong.

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During a psychiatric examination by Dr Giles Tan from the Institute of Mental Health, Lin said he derived pleasure from watching the upskirt videos.

He also said that he had amassed a collection of the brand of ladies' underwear worn by the employee, and would sometimes wear them and watch the videos he had recorded of her.

During sentencing, District Judge John Ng said that while court proceedings showed that Lin has Asperger's syndrome, a form of autism, he was still able to make conscious choices and decisions, and knew that the acts were wrong when he committed them.

However, the judge added that Lin's diagnosed condition has allowed the court to adjust the sentence downwards.

"(Lin) can now seek professional help, which he has started to do, to avoid repeating such acts in the future," he said.

The sentence would show Lin that his actions were not acceptable, and also serve to remind him of the harm he caused to the victims, the judge added.